LED support plate and display device thereof

Abstract

The LED support plate comprises a support plate front surface and a support plate back surface, and a plurality of through holes penetrate through the support plate front surface and the support plate back surface; moreover, the plurality of through holes at least comprise two rows of through holes, and at least every three through holes surround one island-shaped support plate area on the front surface of the support plate; at least two electrode pins are arranged in the island-shaped carrier plate area and used for being connected with an LED light-emitting body arranged on the front face of the carrier plate. In addition, the invention further discloses an LED display device adopting the LED carrier plate. The carrier plate and the LED display device can give consideration to both light transmission and LED display / illumination effects.

Description

An LED carrier board and a display device thereof Technical Field

[0001] The present invention relates to the field of LEDs, and in particular, to an LED carrier board and a display device thereof. Background Art

[0002] Currently, there are a wide variety of LED carrier boards in the prior art. However, when used for lighting or display, there is a demand for transparent or semi-transparent lighting or display on the market demand side.

[0003] Taking display as an example, the semi-transparent display demand poses new requirements for the structure of the LED carrier board. Generally speaking, there is an urgent need in this field to develop an LED carrier board technology and a display device thereof that take into account both light transmission and display visual effects. Technical Problem

[0004] The present invention solves the technical problem of LED transparent or semi-transparent display. Technical Solution

[0005] The present invention provides an LED carrier board, including:

[0006] A front side of the carrier board and a back side of the carrier board, and a plurality of through holes penetrate through the front side and the back side of the carrier board.

[0007] And, the plurality of through holes at least include two rows of through holes, wherein,

[0008] At least every three through holes enclose one island-shaped carrier board area on the front side of the carrier board.

[0009] At least two electrode pins are provided in the island-shaped carrier board area, and the electrode pins are used to connect LED light-emitting bodies arranged on the front side of the carrier board.

[0010] Preferably,

[0011] No IC and / or components for connecting LED light-emitting bodies are provided on the back side of the carrier board.

[0012] The LED light-emitting bodies are located in the island-shaped carrier board area and do not block any through holes.

[0013] Preferably,

[0014] For each row of through holes on the carrier board, within the row, adjacent through holes are arranged at equal intervals. And / or, for each row of LED light-emitting bodies on the carrier board, within the row, adjacent LED light-emitting bodies are arranged at equal intervals.

[0015] Preferably,

[0016] No row-shaped or column-shaped gratings are provided on the carrier board.

[0017] Preferably, ​

[0018] At least every four through-holes enclose one island-shaped carrier region.

[0019] Preferably,

[0020] The carrier is rectangular or other polygonal, or circular, or of other shapes.

[0021] Preferably,

[0022] When at least every four through-holes enclose one island-shaped carrier region, among which,

[0023] The connecting lines of the geometric centers of the four through-holes form a rectangle, and one side of the rectangle is parallel or perpendicular to one side of the carrier.

[0024] Preferably,

[0025] When at least every four through-holes enclose one island-shaped carrier region, among which,

[0026] The connecting lines of the geometric centers of the four through-holes form a rectangle, and at least one side of the rectangle is not parallel to any side of the carrier.

[0027] Preferably,

[0028] The electrode pins include: a first pin and a second pin, and the first pin and the second pin have the following characteristics:

[0029] (1) The first pin is used for electrically connecting the positive electrode of the LED chip in the LED light-emitting body;

[0030] The second pin is used for electrically connecting the negative electrode of the LED chip in the LED light-emitting body.

[0031] (2) The first pin is used for electrically connecting the first input pin of the driving IC of the LED chip in the LED light-emitting body.

[0032] The second pin is used for electrically connecting the second input pin of the driving IC of the LED chip in the LED light-emitting body.

[0033] Preferably,

[0034] The electrode pins include: a first pin, a second pin and a third pin, and the first pin, the second pin and the third pin have the following characteristics:

[0035] The first pin is used for electrically connecting the positive power supply / VCC terminal of the LED light-emitting body;

[0036] The second pin is used for electrically connecting the negative power supply / GND terminal of the LED light-emitting body;

[0037] The third pin is used for electrically connecting to the data signal input pin DIN of the LED light-emitting body.

[0038] Preferably,

[0039] Between the first row of vias and the second row of vias, along the first direction on the carrier board, on the front side of the carrier board, a data input signal wiring of the LED light-emitting body is provided.

[0040] Preferably,

[0041] The carrier board further includes a third row of vias, wherein,

[0042] Between the first row of vias and the second row of vias, and between the second row of vias and the third row of vias, along the first direction on the carrier board, on the back side of the carrier board, a ground wiring of the LED light-emitting body is provided;

[0043] And a first back region of the carrier board between the first row of vias and the second row of vias, and a second back region of the carrier board between the second row of vias and the third row of vias are common-grounded.

[0044] In addition, the present invention also discloses an LED display device, which uses the above-mentioned LED carrier board. Beneficial effects

[0045] The above-mentioned carrier board of the present invention can take into account light transmission and LED display / lighting effects, and even achieve an equally spaced display effect. Further, it can even achieve a visual effect of equally spaced and increased light transmittance. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0047] FIG. 1 is a schematic front view of an LED carrier board provided by an embodiment of the present invention.

[0048] FIG. 2 is a schematic back view of an LED carrier board provided by an embodiment of the present invention.

[0049] FIG. 3 is a schematic front view of an LED carrier board provided by an embodiment of the present invention.

[0050] FIG. 4 is a schematic front view of an LED carrier board provided by an embodiment of the present invention. The best mode of the present invention

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with Figures 1 to 4 of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0052] In one embodiment, the present invention discloses an LED carrier, comprising:

[0053] The carrier board has a front side and a back side, and a plurality of through holes pass through the front side and the back side of the carrier board.

[0054] Furthermore, the plurality of through holes include at least two rows of through holes, wherein:

[0055] At least every three through holes surround an island-shaped carrier area on the front side of the carrier.

[0056] The island-shaped carrier region is provided with at least two electrode pins, and the electrode pins are used to connect to the LED light emitters provided on the front side of the carrier.

[0057] For the above-mentioned embodiment: the multiple through holes in the island-shaped carrier area play the role of light transmission and even ventilation, while the LED light-emitting body plays the role of display / illumination. A conventional situation is that for each island-shaped carrier area, the corresponding LED light-emitting body is exactly set in the island-shaped carrier area, and all the through holes play the role of light transmission and even ventilation. However, the present invention does not exclude the following atypical scheme: an LED light-emitting body is set in mid-air above one or more through holes, and bridges two different island-shaped carrier areas on both sides (or around) of the one or more through holes, and still connects the two electrode pins of these island-shaped carrier areas. It is for this reason that the above-mentioned embodiment defines: the electrode pin is used to connect the LED light-emitting body set on the front side of the carrier, rather than the limitation that: the electrode pin is used to connect the LED light-emitting body set in the island-shaped carrier area.

[0058] When multiple through holes are distributed according to a certain pattern, the LED light source will present an excellent display effect with uniform vision, and the intuitive feeling of the human eye will be improved due to the regular distribution of the through holes, which is more conducive to improving the visual effect when viewed from a distance.

[0059] For example, referring to FIG. 1 to FIG. 2 , the through hole is a circular hole. It can be understood that the through hole can be other uniform or non-uniform shapes, and the shape depends more on the need of visual effect. A circular or other symmetrical shape is a preferred embodiment of the through hole shape, especially a circular shape. Preferably, each circular through hole is a circle of the same diameter, but the present invention is not limited to circular through holes of uniform shape and size.

[0060] It can be understood that, for the embodiments shown in FIGS. 1 and 2, for the LED carrier board, the island-shaped carrier board area is precisely: a part of the carrier board area that is not penetrated except for the through holes. From the overall perspective of the LED carrier board, except for all the through holes, the remaining carrier board area is equivalent to an archipelago. Moreover, for this archipelago, at least every 3 through holes enclose 1 island-shaped carrier board area on the front side of the carrier board, and the entire archipelago is formed by connecting n island-shaped carrier board areas together.

[0061] As shown in FIGS. 1 and 2, when the diameter of the circular through hole is larger than the size of the island-shaped carrier board area and the through hole is used for light transmission, this makes: the light transmittance of the carrier board is relatively high; when the LED is not working, natural light can pass through the multiple through holes, thereby forming a solution with a certain light transmittance.

[0062] In one embodiment, the LED light-emitting body includes a surface-mounted LED.

[0063] In another embodiment,

[0064] No IC and / or components for connecting the LED light-emitting body are provided on the back side of the carrier board.

[0065] For this embodiment, it shows another major innovation of the present invention compared with the prior art. When the LED light-emitting body itself includes a driving IC (not limited to a current-limiting IC or a constant-current IC) in addition to the LED chip, then, the carrier board only needs to supply power to the LED light-emitting body through the corresponding electrodes on the front side of the carrier board, and there is no need to provide any IC and / or components for connecting the LED light-emitting body on the back side of the carrier board.

[0066] In another embodiment, at least every 4 through holes enclose 1 island-shaped carrier board area.

[0067] For example, referring to FIGS. 1 and 3, both of them illustrate that 4 through holes enclose 1 island-shaped carrier board area. However, it must be pointed out that since 3 through holes can enclose a relatively closed area, the present invention is not limited to 4 through holes.

[0068] In another embodiment, for the through holes in each row on the carrier board, within that row, adjacent through holes are arranged at equal intervals.

[0069] In another embodiment, for the LED light-emitting bodies in each row on the carrier board, within that row, adjacent LED light-emitting bodies are arranged at equal intervals.

[0070] It can be understood that both of the above two embodiments are conducive to achieving an equal-spacing visual effect.

[0071] In another embodiment, no row-shaped or column-shaped gratings are provided on the carrier board.

[0072] For this embodiment, compared with traditional LED carrier boards or LED transparent display devices (such as LED transparent display screens) with one or more gratings in the horizontal or vertical direction:

[0073] The present invention can avoid setting any row-shaped or column-shaped gratings. The reason is that the present invention can meet the basic requirements of the mechanical properties of the carrier board through the archipelago formed by multiple island-shaped carrier board areas, without the mandatory setting of one or more row-shaped or column-shaped gratings. In other words, this embodiment has a built-in enhanced structure in terms of mechanics. In addition, the gratings themselves affect the visual effect because they are prone to visual illusions, which is also a consideration for not setting gratings in this embodiment.

[0074] In another embodiment, the carrier board is rectangular, or other polygons, or circular, or other shapes.

[0075] Taking FIGS. 1 and 2 as examples, it can be found that the carrier board is rectangular. This conforms to the general situation of LED lighting or display. It should be noted that rectangles include rectangles and squares. However, for special decorative effects or special visual effects, such as tree shapes, etc., the carrier board of the present invention obviously does not exclude other polygons, or circular, or other shapes other than rectangles. Even, carrier boards of other irregular shapes are also possible.

[0076] In another embodiment, when at least every 4 through holes enclose one island-shaped carrier board area, where

[0077] The connecting lines of the geometric centers of the 4 through holes form a rectangle, and one side of the rectangle is parallel or perpendicular to one side of the carrier board.

[0078] For this embodiment, the carrier board shown in FIGS. 1 and 2 belongs to this situation. It can be understood that this design is more regular because the straight line where the connecting lines of the geometric centers of the through holes are located is parallel or perpendicular to one side of the carrier board. Especially when the carrier board is rectangular, each side of the rectangle formed by the connecting lines of the geometric centers of the 4 through holes will be parallel to one of the sides of the carrier board.

[0079] In another embodiment, when at least every 4 through holes enclose one island-shaped carrier board area, where the connecting lines of the geometric centers of the 4 through holes form a rectangle, and at least one side of the rectangle is not parallel to any side of the carrier board.

[0080] It should be noted that for this embodiment and the previous embodiment, they involve the arrangement of the through holes. In comparison, the arrangement of the through holes in the previous embodiment is relatively traditional, and the connecting line of the geometric centers of the corresponding through holes is parallel or perpendicular to one side of the carrier plate. While the arrangement of the through holes in this embodiment is more flexible than that in the previous embodiment.

[0081] In particular, taking Figure 3 and Figure 1 as a comparison, when the carrier plates are of the same size and the through holes have the same diameter, the arrangement of the through holes in Figure 3 is equivalent to an oblique through hole arrangement and each row of oblique through holes is parallel to each other. In the two cases of Figure 1 and Figure 3, the light transmittance is not difficult to calculate. It should be known that the light transmittance of Figure 3 can be further improved, and the number of LED light-emitting bodies and energy consumption can be significantly reduced. After measurement, Figure 3 has about half the number of LED light-emitting bodies compared to Figure 1. This is very meaningful. Just like in the scenarios of LED lighting or display, people are often at a relatively far distance from the LED device. At this time, on the premise of significantly reducing the number of LED light-emitting bodies, the visual effect will not deteriorate significantly when viewed from a distance, especially for large-size LED lighting or display, and it can still meet the requirements of the visual effect.

[0082] In another embodiment, the electrode pins include: a first pin and a second pin, and the first pin and the second pin have the following characteristics:

[0083] (1) The first pin is used for electrically connecting the positive electrode of the LED chip in the LED light-emitting body;

[0084] The second pin is used for electrically connecting the negative electrode of the LED chip in the LED light-emitting body.

[0085] (2) The first pin is used for electrically connecting the first input pin of the driving IC of the LED chip in the LED light-emitting body;

[0086] The second pin is used for electrically connecting the second input pin of the driving IC of the LED chip in the LED light-emitting body.

[0087] It can be understood that this embodiment means that the LED carrier plate of the present invention is not necessarily limited to three or more pins. Obviously, for the light emission of the LED, whether it is AC or DC drive, the minimum requirement for the LED itself is two-wire power supply. Due to the development of LED chip technology, even without a driving IC, a certain number of LED chips with a smaller occupied area can be used to form an LED light-emitting body and be directly driven by AC or DC. Therefore, the above embodiments are for the specific settings of the first pin and the second pin when there is or without a driving IC.

[0088] In another embodiment, the electrode pins include: a first pin, a second pin and a third pin, and the first pin, the second pin and the third pin have the following characteristics:

[0089] The first pin is used for electrically connecting to the positive power supply / VCC terminal of the LED light-emitting body;

[0090] The second pin is used for electrically connecting to the negative power supply / GND terminal of the LED light-emitting body;

[0091] The third pin is used for electrically connecting to the data signal input pin DIN terminal of the LED light-emitting body.

[0092] For this embodiment, it is specifically targeted at: LED products involving data signal input. Therefore, it selects the conventional three-wire and three-pin method.

[0093] However, considering this embodiment and the previous embodiment, it should be particularly noted that: in the field of LED driving, there has already emerged a technology that uses power supply lines such as zero-fire wires / positive-negative wires to transmit data signals while supplying power. This is equivalent to a kind of carrier technology.

[0094] This means that even for the previous embodiment, even if there are only the first and second pins, it can still transmit data signals:

[0095] Regardless of whether the data signal is a specific coding signal for different LED light-emitting bodies or for different LED chips in a single LED light-emitting body.

[0096] Regardless of whether the data signal is an address coding signal of a specific LED light-emitting body / LED chip or a color signal of the color of illumination or display.

[0097] The corresponding data signal transmission can be achieved by using this kind of carrier technology.

[0098] In another embodiment, the electrode pin further includes a fourth pin, wherein the fourth pin is used for electrically connecting to the data signal output pin DOUT terminal of the LED light-emitting body.

[0099] In another embodiment, between the first row through holes and the second row through holes, along the first direction on the carrier board, on the front side of the carrier board, a data input signal wiring of the LED light-emitting body is provided.

[0100] Referring to FIG. 4, it schematically shows multiple data input signal wirings on the left side of FIG. 4: 1 DI (label 1 in FIG. 4), 2 DI (label 2 in FIG. 4), 3 DI (label 3 in FIG. 4), etc.

[0101] In another embodiment, the carrier board further includes a third row through hole, wherein,

[0102] Between the first row of through-holes and the second row of through-holes, and between the second row of through-holes and the third row of through-holes, on the back side of the carrier board along the first direction on the carrier board, there is a grounding wiring for the LED light-emitting body.

[0103] And the first back area of the carrier board between the first row of through-holes and the second row of through-holes, and the second back area of the carrier board between the second row of through-holes and the third row of through-holes are common-grounded.

[0104] For this embodiment, as shown in Figure 2, it is to ensure the common-grounding of all ground wires and prevent the potential difference caused by non-common-grounding.

[0105] In another embodiment, the carrier board further includes a plurality of first-type vias, and the carrier board is used to electrically connect the power supply negative electrode / GND terminal of the LED light-emitting body through the first-type vias.

[0106] In another embodiment, the carrier board further includes a plurality of second-type vias, and the carrier board is used to electrically connect the power supply positive electrode / VCC terminal of the LED light-emitting body through the second-type vias.

[0107] Further referring to Figure 2, in another embodiment,

[0108] Define the extending direction of both the first row of through-holes and the second row of through-holes as the first direction parallel to one side (such as the upper edge) of the carrier board, and the third row of through-holes also extends along the first direction. In this case,

[0109] Along the second direction substantially perpendicular to the first direction, on the back side of the carrier board, there is provided: a conductive wiring for connecting two first-type vias.

[0110] Furthermore, referring to Figure 4, in another embodiment,

[0111] On the front side of the carrier board, two second-type vias are provided in the island-shaped carrier board area, and the two second-type vias are connected by a conductive wiring.

[0112] In another embodiment, at both ends of the front side of the carrier board, there are provided:

[0113] A first-type terminal for electrically connecting the power supply positive electrode / VCC terminal of the LED light-emitting body; and,

[0114] At both ends of the back side of the carrier board, there are provided:

[0115] A second-type terminal for electrically connecting the power supply negative electrode / GND terminal of the LED light-emitting body.

[0116] Thus, at both ends of the carrier board, the carrier board can be used for cascading carrier boards with the same structure front and back. It only needs to connect the first-type and second-type terminals of the front and back carrier boards to each other. It can be understood that the first-type and second-type terminals can be evenly distributed at both ends of the front side of the carrier board and are multiple.

[0117] In another embodiment, at both ends of the front side of the carrier board, there are also provided:

[0118] Data signal input pin DIN terminals for electrically connecting the LED light-emitting bodies.

[0119] In this way, even when it comes to data signal input, the carrier board can still be cascaded front and back with carrier boards of the same structure.

[0120] In another embodiment, the LED carrier board is made of a material that can be freely bent or deformed.

[0121] It can be understood that this is beneficial to achieving a visual effect with greater freedom.

[0122] In another embodiment, the LED carrier board is made of a transparent material.

[0123] In addition, the present invention also discloses an LED display device, which uses the LED carrier board described in any of the foregoing embodiments.

[0124] In another embodiment, the LED display device further includes LED light-emitting bodies.

[0125] In another embodiment, the LED display device does not need to be provided with a support structure.

[0126] For this embodiment, typically, compared with traditional display devices with grids (such as grid screens), the mechanical strength of the device itself is insufficient, and it requires an additional support structure to support, including but not limited to grids, other additional structural frames outside the grids, etc.

[0127] In another embodiment, since no ICs and / or components need to be provided on the back of the LED carrier board, the LED display device can be installed on any surface or installed in any interlayer.

[0128] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

An LED carrier board, characterized in that: The front and back of the carrier board, and a plurality of through holes penetrate the front and back of the carrier board; and, the plurality of through holes at least include two rows of through holes, wherein at least every three through holes enclose an island-shaped carrier board area on the front of the carrier board; at least two electrode pins are arranged in the island-shaped carrier board area, and the electrode pins are used to connect the LED light-emitting bodies arranged on the front of the carrier board. The LED carrier board according to claim 1, characterized in that No IC and / or components for connecting LED light-emitting bodies are provided on the back of the carrier board; the LED light-emitting bodies are located in the island-shaped carrier board area and do not block any through holes. The LED carrier board according to claim 1, characterized in that For each row of through holes on the carrier board, within that row, adjacent through holes are arranged at equal intervals; and / or, for each row of LED light-emitting bodies on the carrier board, within that row, adjacent LED light-emitting bodies are arranged at equal intervals. The LED carrier board according to claim 1, characterized in that No row-shaped or column-shaped gratings are provided on the carrier board. The LED carrier board according to claim 1, characterized in that At least every four through holes enclose an island-shaped carrier board area. The LED carrier board according to claim 1, characterized in that The carrier board is polygonal or circular. The LED carrier board according to claim 1, characterized in that When at least every four through holes enclose an island-shaped carrier board area, wherein the geometric center connection lines of the four through holes form a rectangle, and one side of the rectangle is parallel or perpendicular to one side of the carrier board; or, the geometric center connection lines of the four through holes form a rectangle, and at least one side of the rectangle is not parallel to any side of the carrier board. The LED carrier board according to claim 1, characterized in that The electrode pins have any one of the following characteristics: (1) The electrode pins include: a first pin and a second pin, wherein the first pin is used to electrically connect the positive electrode of the LED chip in the LED light-emitting body; the second pin is used to electrically connect the negative electrode of the LED chip in the LED light-emitting body; (2) The electrode pins include: a first pin and a second pin, wherein the first pin is used to electrically connect the first input pin of the driving IC of the LED chip in the LED light-emitting body; the second pin is used to electrically connect the second input pin of the driving IC of the LED chip in the LED light-emitting body; (3) The electrode pins include: a first pin, a second pin and a third pin, wherein the first pin is used to electrically connect the positive power supply / VCC terminal of the LED light-emitting body; the second pin is used to electrically connect the negative power supply / GND terminal of the LED light-emitting body; the third pin is used to electrically connect the data signal input pin DIN terminal of the LED light-emitting body. The LED carrier board according to claim 1, characterized in that The carrier board further has any of the following features: (1) Between the first row of vias and the second row of vias, along the first direction on the carrier board, data input signal wirings of the LED light-emitting bodies are provided on the front surface of the carrier board; (2) The carrier board further includes a third row of vias. Among them, between the first row of vias and the second row of vias, and between the second row of vias and the third row of vias, ground wirings of the LED light-emitting bodies are provided along the first direction on the back surface of the carrier board; and a first carrier board back surface area between the first row of vias and the second row of vias and a second carrier board back surface area between the second row of vias and the third row of vias are grounded together. An LED display device, characterized in that it adopts the LED carrier board according to any one of claims 1 to 9.

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