TWI711352B - Conductive board for a display device - Google Patents

Abstract

A conductive board for a display device has an electrically insulated substrate, a plurality of light source electrode connecting areas, and at least one patterned layer of conductive lines. The light source electrode connecting areas are formed above the electrically insulated substrate, arranged into an array, and electrically isolated from each other. Each light source electrode connecting area has one common electrode connecting subarea and a plurality of single electrode connecting subareas. The patterned layer of conductive lines is formed above the electrically insulated substrate and includes at least a plurality of conductive lines each being electrically connected to the common electrode connecting subarea of each of the light source electrode connecting areas on the same row and the patterned layer of conductive lines includes conductive powder particles with particle size of less than 200 micrometers.

Description

Conductive plate for display device

This application relates to a display device, in particular to a conductive plate for the display device.

Light emitting diode (LED) is an electronic component that uses semiconductor materials as luminescent materials. Compared with incandescent lamps and cold cathode fluorescent lamps (CCFL), it has the advantages of energy saving and environmental protection. , Long life, small size and fast response. As the display technology that uses LEDs as the self-luminous source is becoming more and more mature, small and medium-sized LCD displays, which are mainstream products in the display market, are gradually being replaced by flat, thin and lightweight LED displays. On the other hand, LED display panels are also evolving toward larger sizes, attempting to become the new favorite of multimedia information display media.

In the production of large-size LED display panels, usually a small or medium-sized display panel with an LED lamp bead array is produced first, and then multiple small or medium-sized display panels are combined into a large-sized LED Display panel. In order for each LED lamp bead in the LED lamp bead array to be lit, the conductivity between the substrate carrying the LED lamp bead array and the LED lamp bead array must be good. In addition, in order to allow each LED lamp bead in the LED lamp bead array to operate for a long time, the substrate carrying the LED lamp bead array must also have high thermal conductivity. On the other hand, in order for each LED lamp bead in the LED lamp bead array to be lit, it can present the display effect required by various applications, the production of the conductive circuit on the substrate carrying the LED lamp bead array must be able to cope with various differences The wiring design requirements can be completed quickly. Therefore, how to make the substrate carrying the LED lamp beads have both high electrical conductivity and high thermal conductivity, and can meet the requirements of various applications is the technical problem to be solved by the present invention.

In view of the above problems, the inventor of the present application proposes a conductive plate for a display device.

An embodiment of the present application proposes a conductive plate for a display device. In one embodiment, the proposed conductive plate for a display device includes an electrically insulating substrate, a plurality of light-emitting source electrode connection regions, and a first patterned conductive circuit layer. The light-emitting source electrode connection area is formed above the electrically insulating substrate, electrically isolated from each other and arranged in an array. Each light-emitting source electrode connection area is used for electrical connection of an external control device and provides a common electrode and a plurality of single electrodes of a light-emitting source For electrical connection, each light-emitting source electrode connection area has a common electrode connection area for electrical connection of the common electrode of the light-emitting source and a plurality of single electrode connection areas for electrical connection of the single electrode of the light-emitting source. The first patterned conductive circuit layer is formed on the electrically insulating substrate and has at least a plurality of first conductive circuits, and each first conductive circuit is electrically connected to the common electrode connection section in the light emitting source electrode connection area on the same column. The first patterned conductive circuit layer includes conductive powder particles selected from the group consisting of copper, silver, nickel, silver-coated copper, and carbon with a particle size of less than 200 microns.

In an embodiment, the first patterned conductive circuit layer of the conductive plate for the proposed display device further has a plurality of electrode pads electrically isolated from each other, and the electrode pads are respectively formed in the common electrode connection area and the single electrode connection area of the light emitting source electrode connection area. In the electrode connection area, and the proposed conductive plate for the display device further forms a metal conductive layer containing copper on each electrode pad.

In one embodiment, the proposed conductive plate for a display device further includes a protective layer formed on the aforementioned metal conductive layer and made of nickel-gold, nickel-palladium-gold, tin, silver, or organic solder mask (OSP).

In an embodiment, the first patterned conductive circuit layer of the conductive plate for the proposed display device further has a plurality of electrode pads electrically isolated from each other, and the electrode pads are respectively formed in the common electrode connection area and the single electrode connection area of the light emitting source electrode connection area. In the electrode connection zone, and the conductive plate for the proposed display device further forms a solder layer made of nanosilver or nanocopper on each electrode pad.

In an embodiment, the conductive plate for the proposed display device is further formed with a plurality of first single-electrode connection lines, and these first single-electrode connection lines respectively extend from the single-electrode connection zone in a part of the light-emitting source electrode connection area, And the conductive plate used for the display device further includes a transparent insulating layer and a second patterned conductive circuit layer. The transparent insulating layer is located above the electrically insulating substrate. The second patterned conductive circuit layer is formed on the electrically insulating substrate and has a plurality of second single-electrode connection lines, and these second single-electrode connection lines respectively extend from the single-electrode connection zone in the other part of the light-emitting source electrode connection area A part of the second single-electrode connection line and a part of the first single-electrode connection line are separated by a transparent insulating layer and electrically insulated from each other.

In one embodiment, the first patterned conductive circuit layer of the proposed conductive plate for the display device further has a plurality of first electrical connection pads connected to the first single electrode connection lines, and the second patterned conductive circuit The layer also has a plurality of second power distribution connection external electrical connection pads respectively connected to the second single electrode connection lines, and the second power distribution connection external electrical connection pads and the first power distribution connection external electrical connection pads are arranged on the electrically insulating substrate at a distance from each other. Above the adjacent surface close to one side, the arrangement direction of the second power distribution connection external electrical connection pads is parallel to the arrangement direction of the first power distribution connection external electrical connection pads.

In one embodiment, a part of the second single-electrode connection line and a part of the first single-electrode connection line of the conductive plate for the proposed display device separated by the transparent insulating layer are located in two adjacent rows of light-emitting source electrodes Between the connection areas.

In one embodiment, the material of the second single-electrode connection line of the proposed conductive plate for the display device includes silver nanowire, carbon nanotube, conductive polymer, indium tin oxide (ITO), and fluorine-doped tin oxide. (FTO), zinc oxide (ZnO) or aluminum zinc oxide (AZO).

In one embodiment, the material of the first patterned conductive circuit layer of the proposed conductive plate for the display device further includes a material selected from the group consisting of formaldehyde, urea, melamine, benzoic melamine and alcohol compounds. The substance or a substance selected from the group consisting of thermoplastic polyurethane (TPU), epoxy resin, polymethyl methacrylate (PMMA) and ethyl cellulose.

In an embodiment, the electrically insulating substrate of the conductive plate for the proposed display device is a transparent substrate.

In one embodiment, the proposed conductive plate for a display device includes an electrically insulating substrate, a transparent conductive layer, a plurality of light-emitting source electrode connection regions, and a patterned conductive circuit layer. The transparent conductive layer is formed on the electrically insulating substrate and in contact with the electrically insulating substrate. The light-emitting source electrode connection area is located above the transparent conductive layer, electrically isolated from each other and arranged in an array. Each light-emitting source electrode connection area is used for electrical connection of an external control device and for electrical connection of a common electrode and a plurality of single electrodes of a light-emitting source Each light-emitting source electrode connection area has a common electrode connection section for electrical connection of the common electrode of the light-emitting source and a plurality of single electrode connection sections for electrical connection of the single electrode of the light-emitting source. The patterned conductive circuit layer is formed on the transparent conductive layer and is in contact with the transparent conductive layer, and has at least a plurality of conductive circuits, and each conductive circuit is electrically connected to the common electrode connection section of the light emitting source electrode connection area on the same column. The patterned conductive circuit layer contains conductive powder particles with a particle size of less than 200 microns.

Compared with the traditional LED conductive plate, the conductive plate for the display device proposed according to the various embodiments of the present invention has the characteristics of high density, high electrical conductivity, and high thermal conductivity, which improves the LED display. Efficiency, while having the advantages of short process time, suitable for mass production and can reduce manufacturing costs.

The present invention discloses a conductive plate for a display device. The following descriptions of the contrasting diagrams are intended to express the features related to the present invention to facilitate understanding of its meaning. It is not drawn completely based on the actual size and does not limit the present invention. First statement. In addition, if the meaning of the technical terms described in the following text is different from the meaning of the common terms in the technical field, the description of the technical terms described in the text shall prevail.

FIG. 1 is a schematic plan view of a partial area of a conductive plate for a display device according to an embodiment of the invention. 2 is a plan cross-sectional view of a conductive plate for a display device according to an embodiment of the present invention along the A-A direction of FIG. 1. In one embodiment, as shown in FIGS. 1 and 2, the conductive plate 10 for the display device has an electrically insulating substrate 101, a plurality of light-emitting source electrode connection regions 11, a first patterned conductive circuit layer 103, and a transparent conductive Layer 102. In this embodiment, the transparent conductive layer 102 is formed on the electrically insulating substrate 101 and is in contact with the electrically insulating substrate 101. A plurality of grooves 1021 are formed in the transparent conductive layer 102, and each groove 1021 extends the surface of the electrically insulating substrate 101. Expose and simultaneously form a plurality of electrically isolated transparent conductive regions. A plurality of light-emitting source electrode connection regions 11 are formed on the electrically insulating substrate 101, and these transparent conductive regions defined on the transparent conductive layer 102 are thus electrically isolated from each other through a part of the trenches 1021 and arranged in an array. Each light-emitting source electrode connection area 11 is used for electrical connection of an external control device 12 and for electrical connection of multiple electrodes of a light-emitting source. The multiple electrodes of the light-emitting source include a common electrode and multiple single electrodes. The so-called light-emitting source is, for example, capable of emitting light. Red, blue, and green LED lamp beads, and the so-called common electrode of the light-emitting source can be a common anode or a common cathode, such as the ground electrode of the LED lamp bead, and the so-called single electrode of the light-emitting source is, for example, an LED lamp The voltage of the bead is input to the electrode. Each light-emitting source electrode connection area 11 has a plurality of partitions corresponding to the electrodes of the light-emitting source, and these partitions are electrically isolated from each other through a part of the trench 1021, and these partitions of each light-emitting source electrode connection area 11 include a light-emitting source. The common electrode connection section electrically connected to the common electrode of the source and a plurality of single electrode connection sections electrically connected to the single electrodes of the light-emitting source.

In another embodiment, the conductive plate 10 for a display device has an electrically insulating substrate 101, a plurality of light-emitting source electrode connection regions 11, and a first patterned conductive circuit layer 103, but does not have a transparent conductive layer 102. At this time, most of the light-emitting source electrode connection areas 11 are directly defined on the electrically insulating substrate 101, separated from each other and electrically isolated from each other, and are arranged in an array, and most of the light-emitting source electrode connection areas 11 correspond to light-emitting The partitions of the source electrodes are separated from each other and electrically isolated from each other. The use of the light-emitting source electrode connection region 11 and the rest of the structure are the same as the foregoing, and will not be repeated.

In an embodiment, the first patterned conductive circuit layer 103 is formed on the electrically insulating substrate 101 and has at least a plurality of first conductive circuits 1031 and a plurality of common electrical connection pads 1032. The paths of all the first conductive lines 1031 and the paths of the trenches 1021 that isolate the light-emitting source electrode connection regions 11 from each other are staggered, and the paths of all the first conductive lines 1031 are parallel to each other. Each first conductive circuit 1031 is electrically connected to the light-emitting source electrode connection regions 11 located on the same column, in particular to the common electrode connection area corresponding to the common electrode of the light-emitting source in each light-emitting source electrode connection region 11 located on the same column Electric connection. Each common electrical connection pad 1032 is connected to a first conductive circuit 1031, and each common electrical connection pad 1032 is formed on the adjacent surface of the electrically insulating substrate 101 close to one side 1011 and is spaced apart from each other. . The common electrical connection external electrical connection pad 1032 is used to electrically connect to the external control device 12. When the conductive plate 10 for a display device is used in a building, the thickness of the conductive plate 10 for the entire display device is at least 6 mm, and the material of the electrically insulating substrate 101 is glass, which can provide sufficient structural strength.

Please continue to refer to FIG. 1, each light-emitting source electrode connection area 11 is used for electrical connection of multiple electrodes of a light-emitting source. In an embodiment, as shown in FIG. 1, each light-emitting source electrode connection area 11 can be used for electrical connection of a common electrode and three single electrodes of a light-emitting source, and the transparent conductive layer 102 is also formed with self-emission The electrode connection lines 111, 112, 113, and 114 respectively extend from the plurality of regions (for example, one common electrode connection region and three single electrode connection regions) of the plurality of electrodes of the light emitting source in the source electrode connection region 11, In addition, the first conductive circuit 1031 is electrically connected to the common electrode connection section through the electrode connection line 111 extending from the common electrode connection section in the light-emitting source electrode connection area 11.

In another embodiment, the conductive plate for the display device may not have the transparent conductive layer 102, and the electrode connecting lines 111, 112, 113, and 114 are directly formed on the electrically insulating substrate 101 and contacting the electrically insulating substrate 101. The usage and other structures of the electrode connecting wires 111, 112, 113, and 114 are the same as the foregoing, and will not be repeated.

Please refer to FIG. 2, the material of the electrically insulating substrate 101 is, for example, glass, ceramic, aluminum nitride ceramic, polycarbonate, polyethylene terephthalate, polyimide, BT resin, glass fiber or cyclic olefin copolymer In an embodiment, the electrically insulating substrate 101 may be a transparent substrate to form a transparent display device. The transparent conductive layer 102 in contact with and located on the electrically insulating substrate 101 is, for example, a layer of indium tin oxide (ITO) film, fluorine-doped tin oxide (FTO) film, zinc oxide (ZnO) formed by sputtering or evaporation. ) Film or aluminum oxide zinc (AZO) film. The formation method of the first patterned conductive circuit layer 103 is, for example, screen printing or spray printing. The first patterned conductive circuit layer 103 is in contact with and is located on the electrically insulating substrate 101, or is in contact with and located on the transparent conductive layer 102 to penetrate The transparent conductive layer 102 improves the heat dissipation effect. The material of the first patterned conductive circuit layer 103 (including the first conductive circuit 1031) can be cured silver paste, copper paste or silver-coated copper paste, or a cured conductive powder Paste. The conductive powder paste contains conductive powder particles of copper, silver, nickel, silver-coated copper or carbon with a particle size of less than 200 microns. The conductive powder paste can be used to directly chemically process the first patterned conductive circuit layer 103. Plating without any pre-treatment such as reduction or catalysis. The conductive powder slurry is prepared by mixing 10-95% of the conductive powder with a particle size of less than 200 microns, 1-40% of the binder and 5 to 70% of the solvent, and then applying mechanical grinding. The formed conductive powder slurry has good adhesion on glass, ceramic, polyethylene terephthalate, polyimide, BT resin or glass fiber substrate. The so-called conductive powder is a powder with conductivity, such as silver powder, copper powder, silver-coated copper powder, nickel powder or carbon powder. The particle shape of the conductive powder can be flake, spherical, microcrystalline or not. Regular shape. The so-called binder is, for example, a substance formed by the condensation polymerization of formaldehyde, urea, melamine, benzo-melamine and alcohol compounds, and then with thermoplastic polyurethane (TPU), epoxy resin, polymethyl methacrylate (PMMA) or ethyl acetate. Base cellulose is mixed. The so-called solvent is, for example, one of ester compounds, alcohol compounds, ether compounds and ketone compounds, and terpineol, ethanol, ethyl acetate, dibasic acid ester mixture (DBE), glycol ether Acetate (CAC), isophorone or ethylene glycol butyl ether acetate are mixed. In addition, in order to improve the electrical conductivity and thermal conductivity of each first conductive circuit 1031, a metal conductive layer 104 containing copper may be plated on each first conductive circuit 1031.

3A is a cross-sectional plan view of a conductive plate for a display device according to another embodiment of the present invention along the B-B direction of FIG. 1. Please continue to refer to FIGS. 1 and 3A. In another embodiment of the present application, the first patterned conductive circuit layer 103 further has a plurality of electrode pads 1033, and these electrode pads 1033 are electrically isolated from each other and are respectively formed in the light emitting source electrode connection region 11. The common electrode connection zone and the single electrode connection zone are used to connect with the electrode of the light-emitting source, and the electrode pad 1033 can be in contact with the transparent conductive layer 102 to improve the heat dissipation effect through the transparent conductive layer 102. The material of each electrode pad 1033 includes The foregoing cured silver paste, copper paste, or silver-coated copper paste, or the foregoing cured conductive powder paste. In addition, in order to improve the electrical conductivity and thermal conductivity of each electrode pad 1033, a metal conductive layer 104 containing copper can be plated on each electrode pad 1033, and a protective layer 105 can be further formed on the metal conductive layer 104. The material can be nickel gold, nickel palladium gold, tin, silver or organic solder mask (OSP) to improve the oxidation resistance and surface adhesion (SMT) solderability of the metal conductive layer 104.

3B is a plan cross-sectional view of a conductive plate for a display device according to another embodiment of the present invention along the B-B direction of FIG. 1. As shown in FIGS. 1 and 3B, in another embodiment of the present application, which is different from the embodiment in FIG. 3A, each electrode pad 1033 is not plated with a metal conductive layer 104 containing copper. Instead, a solder layer 106 made of nanosilver or nanocopper is formed on each electrode pad 1033 to facilitate the fixed connection of each electrode of the light source on the electrode pad 1033. In this way, the soldering layer 106 can be directly soldered to the LED lamp bead instead of traditional solder paste.

In another embodiment, the conductive plate for the display device may not have the transparent conductive layer 102, and the electrode pad 1033 is directly formed on the electrically insulating substrate 101 and contacting the electrically insulating substrate 101. Regarding the use of the electrode pad 1033 and the rest The structure is the same as the foregoing, and will not be repeated.

4 is a schematic plan view of a conductive plate for a display device according to another embodiment of the invention. As shown in FIG. 4, in this embodiment, a transparent conductive layer 202, a plurality of light-emitting source electrode connection regions 21a, 21b, and 21c, and a first patterned conductive layer are formed on the electrically insulating substrate 201 of the conductive plate 20 for the display device. The circuit layer, the transparent conductive layer 202 is in contact with the electrically insulating substrate 201, the first patterned conductive circuit layer has a plurality of first conductive circuits 2031, a plurality of common electrical connection external electrical connection pads 2032, and a plurality of first electrical connection external electrical connections The pad 2034 and the transparent conductive layer 202 are in contact with the electrically insulating substrate 201. In addition, a plurality of light-emitting source electrode connection regions 21a, 21b, and 21c electrically isolated from each other and arranged in an array are defined on the transparent conductive layer 202. In this embodiment, the conductive plate for the display device further has a plurality of common electrode connecting wires 211 and a plurality of first single electrode connecting wires 212, 213, and 214. The common electrode connection lines 211 respectively extend from the common electrode connection regions in the light emitting source electrode connection areas 21a, 21b, and 21c, and the first single electrode connection lines 212, 213, 214 extend from a part of the light emitting source electrode connection area 21a. And 21b (that is, the light-emitting source electrode connection area closer to the side 2011 of the electrically insulating substrate 201), the single-electrode connection area extends out. The common electrode connecting wires 211 are respectively connected to the first conductive lines 2031, the common electrical connection external electrical connection pads 2032 are respectively connected to the first conductive circuits 2031, and the first electrical branch electrical connection pads 2034 are respectively connected to the first single electrode connections. Lines 212, 213, and 214. Different from FIG. 1, the conductive plate 20 for the display device of this embodiment further has a transparent insulating layer 22 and a second patterned conductive circuit layer 23. The transparent insulating layer 22 is located above the electrically insulating substrate 201, for example, is formed on a part of the transparent conductive layer 202. The second patterned conductive circuit layer 23 is formed on the electrically insulating substrate 201, and has a plurality of second single-electrode connecting lines 232, 233, and 234. These second single-electrode connecting lines 232, 233, and 234 respectively originate from another part of the light-emitting source The single electrode connection area in the electrode connection area 21c (that is, the light emitting source electrode connection area on the side 2011 farther from the electrically insulating substrate 201) extends, and a part of these second single electrode connection lines 232, 233 and 234 and A part of these first single electrode connecting lines 212, 213, and 214 are separated by the transparent insulating layer 22 and electrically insulated from each other. In addition, the second patterned conductive circuit layer 23 also includes a plurality of second electrical connection pads 235 of the second power distribution connection, which are connected to the second single electrode connection lines 232, 233, and 234, respectively. The second electrical connection pads 235 and the first electrical connection pads 2034 are arranged on the adjacent surface of the electrically insulating substrate 201 close to the side 2011 at a distance from each other. These second electrical connections are The arrangement direction of the pads 235 is parallel to the arrangement direction of the first connection pads 2034. In this way, the single-electrode connection wires and the external electrical connection pads on the conductive plate 20 for the display device can be double-layered, thereby increasing the configuration density of the light-emitting source electrode connection area 11 and increasing the usable pixels of the display panel.

In an embodiment, the transparent insulating layer 22 may be formed on a part of the first single electrode connecting lines 212, 213, and 214 and a part of the second single electrode connecting lines 232 by means of screen printing, spraying or filming. , 233 and 234 below. In addition, a part of the second single-electrode connecting lines 232, 233, and 234 separated by the transparent insulating layer 22 and a part of the first single-electrode connecting lines 212, 213, and 214 are connected to the light-emitting source electrodes in two adjacent columns. Between districts. In other words, between any two adjacent light-emitting source electrode connection region columns, since there is no light-emitting source electrode connection region, it can be used as a single-layer or double-layer configuration space for the first single electrode connection line and the second single electrode connection line. In an embodiment, the first single-electrode connection lines 212, 213, and 214 may be transparent conductive lines electrically isolated by a plurality of grooves formed by cutting the transparent conductive layer 202, and the plurality of grooves may be formed by laser etching, and These second single-electrode connection lines 232, 233, and 234 may be cured silver paste, copper paste, or silver-coated copper paste formed on transparent conductive lines separated by a plurality of trenches, or the foregoing conductive powder paste after curing The second patterned conductive circuit layer 23 is formed by screen printing or spraying. The material of the second single electrode connecting lines 232, 233 and 234 of the second patterned conductive circuit layer 23 formed in this way is, for example, It is silver nanowire, carbon nanotube or conductive polymer (PEDOT).

In another embodiment, the transparent insulating layer 22 can be formed on the first single-electrode connecting wires 212, 213, and 214 that are transparent conductive wires by sputtering or evaporation instead, and the sputtering or evaporation film and lightning A part of the second patterned conductive circuit layer 23 is formed on the transparent insulating layer 22 by shooting etching, and the second single electrode connecting lines 232, 233, and 234 of this part of the second patterned conductive circuit layer 23 are formed in this way The material of is, for example, transparent conductive materials such as indium tin oxide (ITO) film, fluorine-doped tin oxide (FTO) film, zinc oxide (ZnO) film, or aluminum oxide zinc (AZO) film.

In another embodiment, the conductive plate 20 for the display device may not have the transparent conductive layer 202, and the material of the first single electrode connecting wires 212, 213, and 214 may be cured silver paste, copper paste or silver-coated copper paste , Or the aforementioned conductive powder paste after curing, the first single-electrode connecting wires 212, 213, and 214 are directly formed on the electrically insulating substrate 201 and contact the electrically insulating substrate 201. The transparent insulating layer 22 is located in a part of these first Between the single-electrode connection lines 212, 213, and 214 and a part of these second single-electrode connection lines 232, 233, and 234. The usage and other structures of the first single-electrode connecting wires 212, 213, and 214 in this embodiment are the same as those in the previous embodiment, and will not be repeated.

FIG. 5 is a schematic plan view of the external electrical connection soft board of the conductive plate for the display device according to an embodiment of the present invention. Referring to FIG. 5, two rows of spaced apart electrical connection pads 131 and 132 are provided on the adjacent surface of the external electrical connection soft board (FPC) or cable 13 near one side 130a, and the same row of electrical connection pads 131 or 132 are aligned with each other, and the electrical connection pads 131 and 132 in different rows are not aligned with each other to form a staggered configuration. According to this configuration, the wires 1311 drawn from the electrical connection pad 131 to the other side 130b and the wires 1321 drawn from the electrical connection pad 132 to the other side 130b will not intersect, which can prevent the wire 1311 and the wire 1321 from intersecting. Short circuit. In one embodiment, when the first electrical connection pad 2034 and the second electrical connection pad 235 of the double-layer bridge in FIG. 4 are aligned with each other in the same row as the electrical connection pads 131 and 132 of FIG. 5 And when the different rows are staggered to each other, the single-layer non-bridging external electrical connection soft board 13 shown in FIG. 5 can be used to connect the first double-layer bridging on the conductive plate 20 of the display device shown in FIG. The external electrical connection pad 2034 of the distribution connection and the second external electrical connection pad 235 of the distribution connection.

FIG. 6 is a schematic plan view of a flexible board for external electrical connection of a conductive plate for a display device according to another embodiment of the present invention. Referring to FIG. 6, two rows of spaced apart electrical connection pads 141 and 142 are provided on the external electrical connection soft board (FPC) or the surface of the cable 14 near one side 140a, and the same row of electrical connection pads 141 or 142 Aligned with each other, the electrical connection pads 141 and 142 in different rows are also aligned with each other. According to this arrangement, in order to prevent the wire 1411 from the electrical connection pad 141 leading to the other side 140b and the wire 1421 from the electrical connection pad 142 leading to the other side 140b from contacting each other and forming a short circuit, the wires 1421 can be formed after the wires 1421 are formed. First, an electrical insulation layer 300 is formed on a partial area including a partial path of all the wires 1421, and then the wires 1411 drawn from the electrical connection pad 141 pass through the partial area covered by the electrical insulation layer 300 and reach the other side 140b . Therefore, in another embodiment, when the positions of the first crossover external electrical connection pad 2034 and the second crossover external electrical connection pad 235 in FIG. 4 are the same as the electrical connection pads 141 and 142 of FIG. 6 When the same row and different rows are aligned with each other, the double-layer jumper external electrical connection soft board 14 shown in FIG. 6 can be used to connect the second layer of the double-layer jumper on the conductive plate 20 for the display device shown in FIG. One sub-connection external electrical connection pad 2034 and a second sub-connection external electrical connection pad 235.

FIG. 7 is a schematic plan view of a flexible board for external electrical connection of a conductive plate for a display device according to another embodiment of the present invention. Referring to FIG. 7, two rows of spaced electrical connection pads 151 and 152 are provided on the external electrical connection soft board (FPC) or the surface of the cable 15 near one side 150a, and the same row of electrical connection pads 151 or 152 Aligned with each other, the electrical connection pads 151 and 152 in different rows are also aligned with each other. According to this configuration, in order to prevent the wires 1511 from the electrical connection pad 151 leading to the other side 150b and the wires 1521 from the electrical connection pad 152 leading to the other side 150b from touching each other and forming a short circuit, the wires 1511 can be formed after the wires 1511 are formed. First, an electrical insulation layer 400 is formed on a partial area including a partial path of all the wires 1511, and then the wires 1521 drawn from the electrical connection pads 152 travel through the partial area covered by the electrical insulation layer 400 and reach the other side 150b . Therefore, in another embodiment, when the positions of the first electrical connection pad 2034 and the second electrical connection pad 235 of the double-layer jumper in FIG. 4 are the same as the electrical connection pads 151 and 152 of FIG. When the same row and different rows are aligned with each other, the double-layer jumper external electrical connection soft board 15 shown in FIG. 7 can be used to connect the second layer of the double-layer jumper on the conductive plate 20 for the display device shown in FIG. One sub-connection external electrical connection pad 2034 and a second sub-connection external electrical connection pad 235.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. The patterned conductive circuit layer mentioned in the text refers to a layered structure with a specific conductive circuit pattern formed on a substrate. The methods for forming the patterned conductive circuit layer include but are not limited to screen printing, spray printing, filming, Laser etching after spraying, sputtering or evaporation. As long as the formed conductive circuit layer has a specific conductive circuit pattern, it can be called a patterned conductive circuit layer, and the present invention does not limit its formation method here. Compared with the traditional LED conductive plate, the conductive plate for the display device proposed according to the embodiments of the present invention has the characteristics of high density, high electrical conductivity, and high thermal conductivity, which improves the LED display. Efficiency, while having the advantages of short process time, suitable for mass production and can reduce manufacturing costs. In addition, the above description should be clear to those with ordinary knowledge in the technical field to which the present invention pertains and implemented accordingly. As long as it does not deviate from the spirit of the present invention and the scope of the attached patent application, any equivalent changes and adjustments made according to the above-mentioned embodiments are deemed to be included in the scope of the present invention.

10: Conductive plate for display device 101: Electrically insulating substrate 1011: side 102: Transparent conductive layer 1021: Groove 103: The first patterned conductive circuit layer 1031: The first conductive circuit 1032: Common electrical connection external electrical connection pad 1033: Electrode pad 104: Metal conductive layer 105: Protective layer 106: Welding layer 11: Luminous source electrode connection area 111: Electrode connection line 112: Electrode connection line 113: Electrode connection line 114: Electrode connection line 12: External control device 13: External electrical connection soft board 130a: side 130b: side 131: Electrical connection pad 1311: Wire 132: Electrical connection pad 1321: Wire 14: External electrical connection soft board 140a: side 140b: side 141: Electrical connection pad 1411: Wire 142: Electrical connection pad 1421: Wire 15: External electrical connection soft board 150a: side 150b: side 151: Electrical connection pad 1511: Wire 152: Electrical connection pad 1521: Wire 20: Conductive plate for display device 201: Electrically insulating substrate 2011: side 202: Transparent conductive layer 2031: The first conductive circuit 2032: Common electrical connection external electrical connection pad 2034: External electrical connection pad of the first sub-connection 21a: Light-emitting source electrode connection area 21b: Light-emitting source electrode connection area 21c: Light-emitting source electrode connection area 211: Common electrode connection line 212: The first single electrode connection line 213: The first single electrode connection line 214: The first single electrode connection line 22: Transparent insulating layer 23: The second patterned conductive circuit layer 232: The second single electrode connection line 233: The second single electrode connection line 234: The second single electrode connection line 235: External electrical connection pad of the second sub-connection 300: Electrical insulation layer 400: Electrical insulation layer

FIG. 1 is a schematic plan view of a partial area of a conductive plate for a display device according to an embodiment of the invention. 2 is a plan cross-sectional view of a conductive plate for a display device according to an embodiment of the present invention taken along the A-A direction of FIG. 1. 3A is a cross-sectional plan view of a conductive plate for a display device according to another embodiment of the present invention along the B-B direction of FIG. 1. 3B is a plan cross-sectional view of a conductive plate for a display device according to still another embodiment of the present invention along the B-B direction of FIG. 1. 4 is a schematic plan view of a conductive plate for a display device according to another embodiment of the invention. FIG. 5 is a schematic plan view of the external electrical connection soft board of the conductive plate for the display device according to an embodiment of the present invention. 6 is a schematic plan view of a flexible board for external electrical connection of a conductive plate for a display device according to another embodiment of the present invention. FIG. 7 is a schematic plan view of a flexible board for external electrical connection of a conductive plate for a display device according to another embodiment of the present invention.

10: Conductive plate for display device

101: Electrically insulating substrate

102: Transparent conductive layer

1021: groove

1031: The first conductive circuit

104: Metal conductive layer

Claims (11)

A conductive plate for a display device, including: An electrically insulating substrate; A plurality of light-emitting source electrode connection areas are formed above the electrically insulating substrate, electrically isolated from each other and arranged in an array, each of the light-emitting source electrode connection areas is used for electrical connection of an external control device and a common light source Electrodes and a plurality of single electrodes are used for electrical connection, each of the light-emitting source electrode connection areas has a common electrode connection area for the common electrode of the light-emitting source to be electrically connected, and a plurality of light-emitting source corresponding to the single electrodes. Connected single electrode connection zone; and A first patterned conductive circuit layer is formed on the electrically insulating substrate and has at least a plurality of first conductive circuits, each of the first conductive circuit and the common electrode in the light-emitting source electrode connection regions in the same column The connection partitions are electrically connected, and the first patterned conductive circuit layer includes a conductive powder particle selected from the group consisting of copper, silver, nickel, silver-coated copper and carbon with a particle size of less than 200 microns. The conductive plate for a display device according to the first item of the scope of patent application, wherein the first patterned conductive circuit layer further has a plurality of electrode pads electrically isolated from each other, and the electrode pads are respectively formed on the light-emitting source electrodes In the common electrode connection area and the single electrode connection area of the connection area, and the conductive plate for the display device further includes: A conductive metal layer is formed on each of the electrode pads, and the material of the conductive metal layer includes copper. According to the second item of the scope of patent application, the conductive plate for the display device further includes: A protective layer is formed on the metal conductive layer. The material of the protective layer includes one of nickel-gold, nickel-palladium-gold, tin, silver, and organic solder mask (OSP). The conductive plate for a display device according to the first item of the scope of patent application, wherein the first patterned conductive circuit layer further has a plurality of electrode pads electrically isolated from each other, and the electrode pads are respectively formed on the light emitting source electrode connection The common electrode connection zone and the single electrode connection zones of the region, and the conductive plate for the display device further includes: A soldering layer is formed on each of the electrode pads, and the material of the soldering layer includes one of nano-silver and nano-copper. According to the first item of the scope of patent application, the conductive plate for the display device further includes: A plurality of first single-electrode connection lines, the first single-electrode connection lines respectively extend from the single-electrode connection zones in a part of the light-emitting source electrode connection areas; A transparent insulating layer located above the electrically insulating substrate; and A second patterned conductive circuit layer is formed on the electrically insulating substrate, and has a plurality of second single electrode connecting lines, and the second single electrode connecting lines are from another part of the light emitting source electrode connecting regions. The single-electrode connection partitions extend, and a part of the second single-electrode connecting lines and a part of the first single-electrode connecting lines are separated by the transparent insulating layer and electrically insulated from each other. The conductive plate for a display device according to item 5 of the scope of patent application, wherein the first patterned conductive circuit layer further has a plurality of first electrical connection pads connected to the first single-electrode connection lines, and The second patterned conductive circuit layer also has a plurality of second power distribution connection external electrical connection pads respectively connected to the second single-electrode connection lines, the second power distribution connection external electrical connection pads and the first power distribution connection external electrical connection pads. The connection pads are arranged above the adjacent surface of the electrically insulating substrate close to one side at a distance from each other, and the arrangement direction of the second power distribution connection external electrical connection pads is parallel to the arrangement of the first power distribution connection external electrical connection pads direction. The conductive plate for a display device according to item 5 of the scope of patent application, wherein the part of the second single-electrode connecting lines separated by the transparent insulating layer and the part of the first single-electrode connecting lines Located between the light-emitting source electrode connection areas in two adjacent rows. According to item 5 of the scope of patent application, the conductive plate for the display device, wherein the material of the second single electrode connecting wires includes silver nanowire, carbon nanotube, conductive polymer, indium tin oxide (ITO), One of fluorine-doped tin oxide (FTO), zinc oxide (ZnO) and aluminum zinc oxide (AZO). The conductive plate for a display device according to item 1 of the scope of patent application, wherein the material of the first patterned conductive circuit layer further includes a material selected from the group consisting of formaldehyde, urea, melamine, benzo-melamine and alcohol compounds A substance in the group of and a substance selected from the group consisting of thermoplastic polyurethane (TPU), epoxy resin, polymethyl methacrylate (PMMA) and ethyl cellulose. According to the first item of the scope of patent application, the conductive plate for a display device, wherein the electrically insulating substrate is a transparent substrate. A conductive plate for a display device, including: An electrically insulating substrate; A transparent conductive layer formed on the electrically insulating substrate and in contact with the electrically insulating substrate; A plurality of light-emitting source electrode connection areas are located above the transparent conductive layer, electrically isolated from each other and arranged in an array. Each of the light-emitting source electrode connection areas is used for electrical connection of an external control device and provides a common electrode and a plurality of light-emitting sources. For electrical connection of a single electrode, each of the light-emitting source electrode connection areas has a common electrode connection area for electrical connection of the common electrode of the light-emitting source and a plurality of single electrodes for electrical connection of the single electrode of the light-emitting source. Electrode connection zone; and A patterned conductive circuit layer is formed above the transparent conductive layer and is in contact with the transparent conductive layer, the patterned conductive circuit layer has at least a plurality of conductive circuits, each of the conductive circuits and the light-emitting source electrodes in the same column The common electrode connection partitions in each connection area are electrically connected, and the patterned conductive circuit layer contains conductive powder particles with a particle size of less than 200 microns.

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