LED carrier board and display device thereof

Abstract

The application discloses an LED carrier plate, which comprises a front carrier plate surface and a back carrier plate surface, and a plurality of through holes penetrating through the front carrier plate surface and the back carrier plate surface; and the plurality of through holes at least comprises two rows of through holes, wherein at least every three through holes enclose one island-shaped carrier plate area on the front carrier plate surface; and the island-shaped carrier plate area is provided with at least two electrode pins for connecting LED luminophores arranged on the front carrier plate surface. In addition, the application also discloses an LED display device adopting the above LED carrier plate. The above carrier plate and LED display device of the application can take into account the light transmission and LED display / illumination effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of LED, in particular, to an LED carrier plate and a display device thereof. BACKGROUND

[0002] At present, there are various kinds of LED carrier plates in the prior art, but when used for lighting or display, the market demand starts to appear the demand for transparent, semi-transparent lighting or display.

[0003] Taking display as an example, the demand for semi-transparent display puts forward new requirements for the structure of the LED carrier plate. Overall, there is an urgent need in the art to develop LED carrier plate technology and display device thereof which take into account the light transmission and display visual effect. SUMMARY

[0004] Therefore, the present application provides an LED carrier plate, comprising:

[0005] a front surface and a back surface of the carrier plate, and a plurality of through holes passing through the front surface and the back surface of the carrier plate;

[0006] and the plurality of through holes comprises at least two rows of through holes, wherein,

[0007] at least every three through holes enclose one island-shaped carrier plate region on the front surface of the carrier plate;

[0008] the island-shaped carrier plate region is provided with at least two electrode pins for connecting the LED light emitter provided on the front surface of the carrier plate.

[0009] Preferably,

[0010] the back surface of the carrier plate is free of any IC and / or components for connecting the LED light emitter;

[0011] the LED light emitter is located in the island-shaped carrier plate region and does not block any through hole.

[0012] Preferably,

[0013] the through holes in each row on the carrier plate are arranged at equal intervals within the row; and / or,

[0014] the LED light emitters in each row on the carrier plate are arranged at equal intervals within the row.

[0015] Preferably,

[0016] the carrier plate is free of row or column-shaped grids.

[0017] Preferably,

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

[0019] Preferably,

[0020] The carrier plate is rectangular or other polygonal, or circular, or other shape.

[0021] Preferably,

[0022] When at least every 4 through holes surround an island-shaped carrier plate region, wherein,

[0023] The connecting line of the geometric centers of the 4 through holes forms a rectangle, and at least one side of the rectangle is parallel or perpendicular to one side of the carrier plate.

[0024] Preferably,

[0025] When at least every 4 through holes surround an island-shaped carrier plate region, wherein,

[0026] The connecting line of the geometric centers of the 4 through holes forms a rectangle, and at least one side of the rectangle is not parallel to any side of the carrier plate.

[0027] Preferably,

[0028] The electrode pin includes: 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 emitter.

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

[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 emitter.

[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 emitter.

[0033] Preferably,

[0034] The electrode pin includes: 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 power supply positive electrode / VCC end of the LED light emitter.

[0036] The second pin is used for electrically connecting the power supply negative electrode / GND end of the LED light emitter.

[0037] The third pin is used for electrically connecting the data signal input pin DIN end of the LED light emitter.

[0038] Preferably,

[0039] Between the first row of through holes and the second row of through holes, along the first direction on the carrier plate, on the front surface of the carrier plate, a data input signal wiring of the LED light emitter is arranged.

[0040] Preferably,

[0041] The carrier plate further comprises a third row of through holes, wherein,

[0042] 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, along the first direction on the carrier plate, on the back surface of the carrier plate, a ground wiring of the LED light emitter is arranged.

[0043] And the first carrier plate back surface area between the first row of through holes and the second row of through holes, and the second carrier plate back surface area between the second row of through holes and the third row of through holes, are common.

[0044] In addition, the present application also discloses an LED display device which uses the above LED carrier plate.

[0045] In summary, the above carrier plate of the present application can take into account the light transmission and LED display / illumination effect, even realize the equal-interval display effect, and further, even realize the equal-interval and improved light transmission rate visual effect. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0047] Figure 1 The front surface structure schematic diagram of the LED carrier plate provided by an embodiment of the present application;

[0048] Figure 2 The back surface structure schematic diagram of the LED carrier plate provided by an embodiment of the present application;

[0049] Figure 3 The front surface structure schematic diagram of the LED carrier plate provided by an embodiment of the present application;

[0050] Figure 4 The front surface structure schematic diagram of the LED carrier plate provided by an embodiment of the present application;

[0051] Figure 5 The back surface structure schematic diagram of the LED carrier plate provided by an embodiment of the present application. DETAILED DESCRIPTION

[0052] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will Figures 1 to 5 To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will

[0053] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0054] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0055] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", "row", "column", "parallel", "vertical" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0056] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0057] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0058] In one embodiment, the present application discloses an LED carrier plate, comprising:

[0059] The carrier plate front surface and the carrier plate back surface, and the plurality of through holes pass through the carrier plate front surface and the carrier plate back surface;

[0060] And the plurality of through holes at least includes 2 rows of through holes, wherein,

[0061] At least every 3 through holes enclose 1 island-shaped carrier plate area on the carrier plate front surface;

[0062] The island-like carrier plate region is provided with at least two electrode pins, which are used to connect the LED light-emitting body arranged on the front surface of the carrier plate.

[0063] For the above-mentioned embodiments: the plurality of through holes of the island-like carrier plate region bear the function of light transmission or even ventilation, and the LED light-emitting body bears the function of display / illumination. A common case is that, for each island-like carrier plate region, the corresponding LED light-emitting body is arranged just above the island-like carrier plate region, and all the through holes bear the function of light transmission or even ventilation. However, the present application does not exclude the following atypical scheme: one LED light-emitting body is arranged above one or more through holes and spans two different island-like carrier plate regions on both sides (or around) of the one or more through holes, and still connects the two electrode pins of the island-like carrier plate regions. Therefore, the above-mentioned embodiments limit that the electrode pins are used to connect the LED light-emitting body arranged on the front surface of the carrier plate, rather than limiting that the electrode pins are used to connect the LED light-emitting body arranged on the island-like carrier plate region.

[0064] When the plurality of through holes are regularly distributed, the LED light-emitting body will present excellent display effect with visual uniformity, and the intuitive feeling of the human eye will be improved due to the regular distribution of the through holes, especially when viewed from a distance.

[0065] For example, refer to Figures 1 to 2 , which shows the case that the through holes are circular holes. It can be understood that the through holes can be other uniform or non-uniform shapes, and the shape is more dependent on the need for visual effect. Circular or other shapes with symmetry are preferred embodiments of the shape of the through hole, especially circular. Preferably, each circular through hole is a circle with the same diameter, but the present application is not limited to circular and uniform shape and size of the through hole.

[0066] It can be understood that, for the embodiments shown in Figure 1 , Figure 2 , for the LED carrier plate, the island-like carrier plate region is just a part of the carrier plate region that is not penetrated except for the through holes. From the overall perspective of the LED carrier plate, the remaining carrier plate region is equivalent to an archipelago except for all the through holes, and for this archipelago, at least every three through holes enclose one island-like carrier plate region on the front surface of the carrier plate, and the entire archipelago is formed by n island-like carrier plate regions.

[0067] As shown in Figure 1 , Figure 2 , when the diameter of the circular through hole is larger than the size of the island-like carrier plate region and the through hole is used for light transmission, it makes the light transmission rate of the carrier plate higher; when the LED is not working, natural light can pass through the plurality of through holes, thereby forming a solution with a certain light transmission rate.

[0068] In one embodiment, the LED light emitter comprises a patch-type LED.

[0069] In another embodiment,

[0070] The back surface of the carrier plate is free of any IC and / or components for connecting the LED light emitter.

[0071] For this embodiment, it embodies another great innovation of the present application compared with the prior art. When the LED light emitter itself comprises a driving IC (not limited to a current-limiting IC, a constant-current IC) in addition to the LED chip, then the carrier plate only needs to supply power to the LED light emitter through the corresponding electrodes on the front surface of the carrier plate, and does not need to be provided with any IC and / or components for connecting the LED light emitter on the back surface of the carrier plate.

[0072] In another embodiment,

[0073] At least every 4 through holes enclose 1 island-shaped carrier plate region.

[0074] For example, see Figure 1 , Figure 3 which all illustrate that 4 through holes enclose 1 island-shaped carrier plate region. However, it must be pointed out that since 3 through holes can enclose a relatively closed region, the present application is not limited to 4 through holes.

[0075] In another embodiment,

[0076] The through holes in each row on the carrier plate are arranged at equal intervals in the row.

[0077] In another embodiment,

[0078] The LED light emitters in each row on the carrier plate are arranged at equal intervals in the row.

[0079] It can be understood that the above two embodiments are both conducive to achieving the equal-interval visual effect.

[0080] In another embodiment,

[0081] The carrier plate is free of row-shaped or column-shaped grids.

[0082] For this embodiment, compared with the conventional LED carrier plate or LED transparent display device (for example, LED transparent display screen) with one or more grids in the horizontal direction or vertical direction:

[0083] The present application can be free of any row or column grid. The reason is that the present application can meet the basic requirements of the mechanical properties of the carrier plate through the archipelago formed by the plurality of island-shaped carrier plate regions, without having to be forced to set one or more row or column grids. In other words, the present embodiment has a self-contained mechanically reinforced structure. In addition, the grid itself affects the visual effect, because the grid is prone to visual illusion, which is also a consideration for the present embodiment to be free of grid.

[0084] In another embodiment,

[0085] The carrier plate is rectangular or other polygonal, or circular, or other shape.

[0086] For example, Figure 1 , Figure 2 It can be found that the carrier plate is rectangular. This conforms to the general case of LED lighting or display. It should be noted that the rectangle includes the oblong and the square. However, if a special decorative effect or a special visual effect, such as a tree shape, etc., is performed, the carrier plate of the present application obviously does not exclude other polygons, or circles, or other shapes, other than rectangles. Even, other irregularly shaped carrier plates are also possible.

[0087] In another embodiment,

[0088] When at least every 4 through holes enclose an island-shaped carrier plate region, wherein,

[0089] The line connecting the geometric centers of the 4 through holes forms a rectangle, and at least one side of the rectangle is parallel or perpendicular to one side of the carrier plate.

[0090] For this embodiment, Figure 1 , Figure 2 The carrier plate shown belongs to this case. It can be understood that such a design appears more regular, because the line where the geometric centers of the through holes are connected is parallel or perpendicular to one side of the carrier plate. Especially when the carrier plate is rectangular, the rectangle formed by the line connecting the geometric centers of the 4 through holes will have each side parallel to one side of the carrier plate.

[0091] In another embodiment,

[0092] When at least every 4 through holes enclose an island-shaped carrier plate region, wherein,

[0093] The line connecting the geometric centers of the 4 through holes forms a rectangle, and at least one side of the rectangle is not parallel to any side of the carrier plate.

[0094] It is to be noted that, as to the present embodiment and the previous one, it relates to the arrangement of the through holes. In comparison, the arrangement of the through holes of the previous embodiment is more traditional, and the line connecting the geometric centers of the corresponding through holes is parallel or perpendicular to one side of the carrier plate. In comparison, the arrangement of the through holes of the present embodiment is more flexible than that of the previous embodiment.

[0095] In particular, with Figure 3 and Figure 1 the arrangement of the through holes of the carrier plate of the present embodiment is equivalent to the arrangement of the through holes in a diagonal direction and each row of the through holes in the diagonal direction is parallel to each other. Figure 3 and Figure 1 and Figure 3 In both cases, the light transmittance is not difficult to calculate. It is to be noted that, Figure 3 the light transmittance can be further improved, and the number of LED light emitters and energy consumption can be significantly reduced. After calculation, Figure 3 compared with Figure 1 about half of the LED light emitters. This is very meaningful. As in the scene of LED lighting or display, people are often far away from the LED device. At this time, under the premise of significantly reducing the number of LED light emitters, far observation will not cause significant degradation of visual effect, especially for large-size LED lighting or display, the requirements of visual effect can still be met.

[0096] In another embodiment,

[0097] The electrode pin comprises: a first pin and a second pin, and the first pin and the second pin have the following characteristics:

[0098] (1) The first pin is used for electrically connecting the positive electrode of the LED chip in the LED light emitter.

[0099] The second pin is used for electrically connecting the negative electrode of the LED chip in the LED light emitter.

[0100] (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 emitter.

[0101] The second pin is used for electrically connecting the second input pin of the driving IC of the LED chip in the LED light emitter.

[0102] It can be understood that this embodiment means that the LED carrier board of the present application is not necessarily limited to three pins and above. Obviously, in terms of LED light emission, whether AC or DC drive, the minimum requirement for the LED itself is two-line power supply. Due to the development of LED chip technology, a certain number of LED chips with smaller footprint can form an LED light emitter and be directly driven by AC or DC even without a driving IC. Therefore, the above embodiment is for the specific arrangement of the first pin, the second pin with or without a driving IC.

[0103] In another embodiment,

[0104] The electrode pin comprises: 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:

[0105] The first pin is used for electrically connecting the power supply positive pole / VCC end of the LED light emitter;

[0106] The second pin is used for electrically connecting the power supply negative pole / GND end of the LED light emitter;

[0107] The third pin is used for electrically connecting the data signal input pin DIN end of the LED light emitter.

[0108] In this embodiment, it is particularly directed to LED products involving data signal input. Therefore, it selects the conventional three-wire, three-pin mode.

[0109] However, in combination with the previous embodiment and the present embodiment, it needs to be particularly pointed out that in the field of LED driving, there has appeared a technology of transmitting data signals while supplying power by using power supply lines such as zero fire line / positive and negative pole line. This is equivalent to a kind of carrier technology.

[0110] This means that even for the previous embodiment, even if there are only the first pin and the second pin, they can also transmit data signals:

[0111] Whether the data signal is a specific encoding signal for different LED light emitters or for different LED chips in a single LED light emitter;

[0112] Whether the data signal is an address encoding signal of the specific LED light emitter / LED chip or a color signal of the color of illumination or display;

[0113] The transmission of the corresponding data signal can be realized by using such carrier technology.

[0114] In another embodiment,

[0115] The electrode pin further comprises a fourth pin, wherein the fourth pin is used to electrically connect a data signal output pin DOUT end of the LED light emitter.

[0116] In another embodiment,

[0117] Between the first row of through holes and the second row of through holes, along the first direction on the carrier board, on the front surface of the carrier board, a data input signal wiring of the LED light emitter is arranged.

[0118] Referring to Figure 4 , on the left side of Figure 4 , a plurality of data input signal wirings are schematically shown: 1DI, 2DI, 3DI, etc.

[0119] In another embodiment,

[0120] The carrier board further comprises a third row of through holes, wherein,

[0121] 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, along the first direction on the carrier board, on the back surface of the carrier board, a ground wiring of the LED light emitter is arranged;

[0122] And the first carrier board back surface area between the first row of through holes and the second row of through holes, and the second carrier board back surface area between the second row of through holes and the third row of through holes, are common.

[0123] For this embodiment, as Figure 2 shown, it is to ensure the common ground of all ground wires, to prevent the potential difference caused by the non-common ground.

[0124] In another embodiment,

[0125] The carrier board further comprises a plurality of first type vias, and the carrier board is used to electrically connect a power supply negative pole / GND end of the LED light emitter through the first type vias.

[0126] In another embodiment,

[0127] The carrier board further comprises a plurality of second type vias, and the carrier board is used to electrically connect a power supply positive pole / VCC end of the LED light emitter through the second type vias.

[0128] Further referring to Figure 2 , in another embodiment,

[0129] The direction in which the first row of through holes and the second row of through holes are extended is defined as a first direction parallel to one edge (for example, the upper edge) of the carrier board, and the third row of through holes is also along the first direction, in which case,

[0130] Along a second direction which is substantially perpendicular to the first direction, on the back surface of the carrier plate, there are conductive wires for connecting two first type vias.

[0131] Further, referring to Figure 4 In another embodiment,

[0132] On the front surface of the carrier plate, the island-shaped carrier plate region is provided with two second type vias, and the two second type vias are connected by conductive wires.

[0133] In another embodiment,

[0134] On both ends of the front surface of the carrier plate, there are:

[0135] first type wiring ends for electrically connecting the positive power supply / VCC end of the LED light emitter; and

[0136] On both ends of the back surface of the carrier plate, there are:

[0137] second type wiring ends for electrically connecting the negative power supply / GND end of the LED light emitter.

[0138] Thus, on both ends of the carrier plate, the carrier plate can be used to cascade the carrier plates of the same structure in front and back, and only the first type and second type wiring ends of the front and back carrier plates need to be connected to each other. It can be understood that the first type and second type wiring ends can be uniformly distributed on both ends of the front surface of the carrier plate, and there are multiple of them.

[0139] In another embodiment,

[0140] On both ends of the front surface of the carrier plate, there are also:

[0141] data signal input pins DIN ends for electrically connecting the LED light emitter.

[0142] In this way, even if it involves data signal input, the carrier plate can also be cascaded with the carrier plates of the same structure in front and back.

[0143] In another embodiment,

[0144] The LED carrier plate is selected to be a material that can be freely bent or deformed.

[0145] It can be understood that this is conducive to achieving a visual effect with greater freedom.

[0146] In another embodiment,

[0147] The LED carrier plate is selected to be a transparent material.

[0148] In addition, the present application also discloses an LED display device which adopts the LED carrier plate according to any one of the preceding embodiments.

[0149] In another embodiment, the LED display device further comprises LED light-emitting bodies.

[0150] In another embodiment, the LED display device is free of support structure.

[0151] For this embodiment, typically, compared with conventional display devices with grating (e.g. grating screen), the device itself is not mechanically strong enough, and it needs additional support structure to support, including but not limited to grating, other additional structure frame outside the grating, etc.

[0152] In another embodiment,

[0153] Since the back of the LED carrier plate can be free of any IC and / or components, the LED display device can be installed on any surface or in any interlayer.

[0154] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all such changes or replacements shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An LED carrier board, comprising: a plurality of through-holes passing through the front surface and the back surface of the carrier board; at least 1 island-like carrier board region surrounded by 3 through-holes on the front surface of the carrier board; LED light emitters located on the island-like carrier board region and not covering any of the through-holes; or, LED light emitters located above one or more through-holes and spanning 2 island-like carrier board regions around the one or more through-holes; wherein, at least 3 adjacent through-holes on the carrier board, which do not all lie on the same straight line, surround 1 island-like carrier board region; the through-holes include through-holes located at edge positions in addition to through-holes located at intermediate positions; the through-holes located at edge positions include through-holes arranged in half shapes; each row of through-holes on the carrier board has adjacent through-holes arranged at equal intervals within the row.

2. The LED carrier board of claim 1, wherein, the back surface of the island-like carrier board region of the carrier board is free of any ICs and / or components for connecting the LED light emitters.

3. The LED carrier board of claim 1, wherein, each row of LED light emitters on the carrier board has adjacent LED light emitters arranged at equal intervals within the row.

4. The LED carrier board of claim 1, wherein, the carrier board is free of row-like or column-like grids.

5. The LED carrier board of claim 1, wherein, the island-like carrier board region is provided with electrode pins for connecting LED light emitters provided on the front surface of the carrier board.

6. The LED carrier board of claim 1, wherein, the carrier board is rectangular or other polygonal, or circular, or other shaped; the carrier board is made of transparent material.

7. The LED carrier board of claim 1, wherein, when at least 1 island-like carrier board region is surrounded by 4 through-holes, wherein, the line connecting the geometric centers of the 4 through-holes forms a rectangle, and 1 side of the rectangle is parallel or perpendicular to 1 side of the carrier board; or; the line connecting the geometric centers of the 4 through-holes forms a rectangle, and at least 1 side of the rectangle is not parallel to any side of the carrier board.

8. The LED carrier board of claim 5, wherein, the electrode pins have any 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 an LED chip in an LED light emitter; the second pin is used to electrically connect the negative electrode of an LED chip in an LED light emitter; (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 a driving IC of an LED chip in an LED light emitter; the second pin is used to electrically connect the second input pin of a driving IC of an LED chip in an LED light emitter; (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 power supply positive electrode / VCC terminal of an LED light emitter; the second pin is used to electrically connect the power supply negative electrode / GND terminal of an LED light emitter; the third pin is used to electrically connect the data signal input pin DIN terminal of an LED light emitter.

9. The LED carrier board of claim 1, wherein, the carrier board also has any of the following characteristics: (1) Between the first row of through holes and the second row of through holes, along the first direction on the carrier plate, on the front surface of the carrier plate, a data input signal wiring of the LED light emitter is arranged; (2) The carrier plate further comprises a third row of through holes, wherein, 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, along the first direction on the carrier plate, on the back surface of the carrier plate, a ground wiring of the LED light emitter is arranged; And the first carrier plate back surface area between the first row of through holes and the second row of through holes, and the second carrier plate back surface area between the second row of through holes and the third row of through holes, are common.

10. An LED display device employing the LED carrier plate according to any one of claims 1 to 9.

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