LED display device

Abstract

The application discloses an LED display device. The LED display device comprises a plurality of display units, each display unit comprising a plurality of sub-pixel points, N anode connection points and M cathode connection points, the anodes of the plurality of sub-pixel points being connected to the anode of an external power supply through the N anode connection points, and the cathodes of the plurality of sub-pixel points being connected to the cathode of the power supply through the M cathode connection points, wherein N and M are positive integers greater than or equal to 1; at least one anode connection point of the N anode connection points is connected to the anode of the power supply and the anodes of at least two sub-pixel points of the plurality of sub-pixel points; and / or at least one cathode connection point of the M cathode connection points is connected to the cathode of the power supply and the cathodes of at least two sub-pixel points of the plurality of sub-pixel points. The application solves the technical problem of insufficient resolution of the LED display device in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of display control, in particular to an LED display device. BACKGROUND

[0002] With the development of LED display technology, at present, LED display screens are applied to various fields due to low cost, small power consumption, high visibility, free assembly and other advantages. Meanwhile, with the popularization of LED display screen applications, people's requirements for display quality are also getting higher and higher, therefore, how to improve the display quality of LED display screens has become a research hotspot in the field.

[0003] However, due to the limitation of materials and technology development of LED, a small number of pixel points can only be set under a fixed size, thereby leading to low resolution of the LED display device, which cannot meet the user's demand.

[0004] At present, no effective solution has been proposed for the above problems. SUMMARY

[0005] Embodiments of the present application provide an LED display device to at least solve the technical problem of low resolution of the LED display device in the related art.

[0006] According to an aspect of embodiments of the present application, an LED display device is provided, comprising: a plurality of display units, the display unit comprising a plurality of sub-pixel points, N anode connection points and M cathode connection points, the anodes of the plurality of sub-pixel points being connected to the anode of an external power supply through the N anode connection points, the cathodes of the plurality of sub-pixel points being connected to the cathode of the power supply through the M cathode connection points, wherein N and M are both positive integers greater than or equal to 1; wherein at least one anode connection point of the N anode connection points is connected to the anode of the power supply and the anodes of at least two sub-pixel points of the plurality of sub-pixel points; and / or at least one cathode connection point of the M cathode connection points is connected to the cathode of the power supply and the cathodes of at least two sub-pixel points of the plurality of sub-pixel points.

[0007] Optionally, each of the display units comprises four sub-pixel points; the four sub-pixel points are arranged in two rows and two columns to form a pixel point, the four sub-pixel points of the pixel point comprising three sub-pixel points of red, blue and green respectively, and a fourth sub-pixel point having the same color as the diagonal sub-pixel point.

[0008] Optionally, the plurality of display units comprises a plurality of first display units and a plurality of second display units, the plurality of first display units and the plurality of second display units are spaced apart in a row direction, and the color of a pair of sub-pixel points located on a diagonal line in the first display unit is opposite to the color of a pair of sub-pixel points located on a diagonal line in the same direction in the second display unit.

[0009] Optionally, the four sub-pixel points are connected to the cathode or anode of the power supply through a first connection point, the four sub-pixel points are respectively provided with four second connection points corresponding thereto, and are respectively connected to the anode or cathode of the power supply through the four second connection points; when the first connection point is an anode connection point, the second connection point is a cathode connection point; when the first connection point is a cathode connection point, the second connection point is an anode connection point.

[0010] Optionally, two sub-pixel points adjacent in a row or adjacent in a column among the four sub-pixel points are connected to the anode or cathode of the power supply through a third connection point, and two sub-pixel points adjacent in a column or adjacent in a row among the four sub-pixel points are connected to the cathode or anode of the power supply through a fourth connection point; when the third connection point is an anode connection point, the fourth connection point is a cathode connection point; when the third connection point is a cathode connection point, the fourth connection point is an anode connection point.

[0011] Optionally, two sub-pixel points adjacent in a row or adjacent in a column among the four sub-pixel points are connected to the anode or cathode of the power supply through a fifth connection point, the four sub-pixel points are respectively provided with four sixth connection points corresponding thereto, and are respectively connected to the anode or cathode of the power supply through the four sixth connection points; when the fifth connection point is an anode connection point, the sixth connection point is a cathode connection point; when the fifth connection point is a cathode connection point, the sixth connection point is an anode connection point.

[0012] Optionally, the sub-pixel points between two adjacent rows in each of the first display units and the second display units are staggered; or, the four sub-pixel points in each of the first display units and the second display units are arranged in a matrix of two rows and two columns.

[0013] Optionally, the two sub-pixel points in the same row in each of the first display units and the second display units are closely adjacent.

[0014] Optionally, the first display units and the second display units are provided with a first preset distance between adjacent sub-pixel points, and the first preset distance is greater than the distance between two adjacent sub-pixel points in each of the first display units and the second display units.

[0015] Optionally, the colors of two adjacent sub-pixel points in the same row in each of the first display units are opposite to the colors of two adjacent sub-pixel points in another row in each of the second display units.

[0016] Optionally, each row of sub-pixel points includes two sub-pixel points in the same diagonal direction in the first display unit and the second display unit, and the colors of the two sub-pixel points are opposite.

[0017] According to an aspect of an embodiment of the present application, another LED display device is also provided, which includes a plurality of display units, each of the display units including four sub-pixel points, the four sub-pixel points including three sub-pixel points of red, blue and green respectively, and a fourth sub-pixel point having the same color as a diagonal sub-pixel point; the plurality of display units include a plurality of third display units and a plurality of fourth display units, the third display units and the fourth display units being distributed in a row direction, and the colors of a pair of sub-pixel points in a diagonal line in the third display units being opposite to the colors of a pair of sub-pixel points in the same diagonal line in the fourth display units.

[0018] Optionally, the four sub-pixel points in each of the third display units and the fourth display units are distributed in a matrix of two rows and two columns; or, the sub-pixel points between two adjacent rows in each of the third display units and the fourth display units are distributed in a staggered manner.

[0019] Optionally, two sub-pixel points in the same row in each of the third display units and the fourth display units are closely adjacent.

[0020] Optionally, a third preset distance is provided between adjacent sub-pixel points between the third display units and the fourth display units, and the third preset distance is greater than a distance between two adjacent sub-pixel points in each of the third display units and the fourth display units.

[0021] Optionally, the colors of two adjacent sub-pixel points in the same row in each of the third display units are opposite to the colors of two adjacent sub-pixel points in another row in each of the fourth display units.

[0022] Optionally, each row of sub-pixel points includes two sub-pixel points in the same diagonal direction in the third display unit and the fourth display unit, and the colors of the two sub-pixel points are opposite.

[0023] In the embodiment of the present application, the display unit comprises a plurality of sub-pixel points, N anode connection points and M cathode connection points. At least one of the N anode connection points is connected to the anode of the power supply and the anodes of at least two of the sub-pixel points. At least one of the M cathode connection points is connected to the cathode of the power supply and the cathodes of at least two of the sub-pixel points. In this way, the adjacent sub-pixel points in the display unit share one driving pin, which can make the adjacent sub-pixel points more closely arranged, save more space, increase the density of the sub-pixel points, and achieve the purpose of increasing the arrangement density of the sub-pixel points, thereby improving the display quality of the LED display device and improving the resolution of the LED display device, and further solving the technical problem of low resolution of the LED display device in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0025] Figure 1 is a schematic diagram of an LED display device according to an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of another LED display device according to an embodiment of the present application;

[0027] Figure 3-1 is a schematic diagram of a three-lamp arrangement according to an embodiment of the present application;

[0028] Figure 3-2 is a schematic diagram of a Delta three-lamp arrangement according to an embodiment of the present application;

[0029] Figure 4-1 is a schematic diagram of a four-lamp arrangement according to an embodiment of the present application;

[0030] Figure 4-2 is a schematic diagram of a four-lamp driving arrangement according to an embodiment of the present application;

[0031] Figure 4-3 is a schematic diagram of a four-lamp two-in-one driving arrangement according to an embodiment of the present application;

[0032] Figure 4-4 is a schematic diagram of a four-lamp four-in-one driving arrangement according to an embodiment of the present application;

[0033] Figure 4-5 is a schematic diagram of another four-lamp four-in-one driving arrangement according to an embodiment of the present application;

[0034] Figure 5 is a schematic diagram of a four-lamp arrangement according to an embodiment of the application. DETAILED DESCRIPTION

[0035] In order to make persons skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0036] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to the process, method, product, or device.

[0037] Figure 1 is a schematic diagram of an LED display device according to an embodiment of the present application, as Figure 1 According to an aspect of an embodiment of the present application, there is provided an LED display device, comprising: a plurality of display units,

[0038] The display unit comprises a plurality of sub-pixel points, N anode connection points, and M cathode connection points. Anodes of the plurality of sub-pixel points are connected to an anode of an external power supply through the N anode connection points, and cathodes of the plurality of sub-pixel points are connected to a cathode of the power supply through the M cathode connection points, wherein N and M are positive integers greater than or equal to 1; wherein at least one of the N anode connection points is connected to the anode of the power supply and anodes of at least two of the plurality of sub-pixel points; and / or at least one of the M cathode connection points is connected to the cathode of the power supply and cathodes of at least two of the plurality of sub-pixel points.

[0039] The display unit includes a plurality of sub-pixel points, N anode connection points and M cathode connection points, the anodes of the plurality of sub-pixel points are connected to the anode of an external power supply through the N anode connection points, and the cathodes of the plurality of sub-pixel points are connected to the cathode of the power supply through the M cathode connection points, wherein N and M are positive integers greater than or equal to 1; at least one anode connection point of the N anode connection points is connected to the anode of the power supply and the anode of at least two sub-pixel points of the plurality of sub-pixel points; and / or at least one cathode connection point of the M cathode connection points is connected to the cathode of the power supply and the cathode of at least two sub-pixel points of the plurality of sub-pixel points, so that the adjacent plurality of sub-pixel points in the display unit share one driving pin, the adjacent sub-pixel points can be arranged more closely, space is saved, the density of the sub-pixel points is improved, the arrangement density of the sub-pixel points is improved, the display quality of the LED display device is improved, the resolution of the LED display device is improved, and the technical problem of low resolution of the LED display device in the related art is solved.

[0040] The display screen includes a plurality of sub-pixel points arranged in a preset manner, several adjacent sub-pixel points form one pixel point of the display screen, and the plurality of pixel points are arranged to form the display screen. The display unit is obtained by dividing the plurality of sub-pixel points, and actually means that the plurality of sub-pixel points are arranged adjacent to each other.

[0041] Each sub-pixel point has two driving pins, which are an anode connection point and a cathode connection point of the sub-pixel point, the anode connection point is connected to the positive electrode of the power supply, and the cathode connection point is connected to the negative electrode of the power supply, so as to provide power supply for the sub-pixel point and make the sub-pixel point emit light. The sub-pixel point can be a red sub-pixel point R, a green sub-pixel point G or a blue sub-pixel point B. By controlling the opening and closing of the red, green and blue sub-pixel points of one pixel point, the color change of one pixel point is realized.

[0042] The display unit includes a plurality of sub-pixel points, N anode connection points and M cathode connection points, the anodes of the plurality of sub-pixel points are connected to the anode of an external power supply through the N anode connection points, and the cathodes of the plurality of sub-pixel points are connected to the cathode of the power supply through the M cathode connection points, wherein N and M are positive integers greater than or equal to 1; at least one anode connection point of the N anode connection points is connected to the anode of the power supply and the anode of at least two sub-pixel points of the plurality of sub-pixel points; and / or at least one cathode connection point of the M cathode connection points is connected to the cathode of the power supply and the cathode of at least two sub-pixel points of the plurality of sub-pixel points, so that the adjacent plurality of sub-pixel points in the display unit share one driving pin, the adjacent sub-pixel points can be arranged more closely, space is saved, the density of the sub-pixel points is improved, the arrangement density of the sub-pixel points is improved, the display quality of the LED display device is improved, the resolution of the LED display device is improved, and the technical problem of low resolution of the LED display device in the related art is solved. Figure 1Since the number of sub-pixels is too large, to avoid confusion, the anode connection point and the cathode connection point of the sub-pixel are not directly connected to the anode and the cathode of the power supply. In fact, the anode connection point or the cathode connection point of the sub-pixel is not directly connected to the power supply, but is connected to the sub-pixel after the power supply is adjusted by a transformer, a resistor or various circuits, to supply power to the sub-pixel. In addition, it should be noted that in the embodiment, the anode connection point and the cathode connection point of the sub-pixel can be connected to the anode and the cathode of the power supply, and the embodiment is not limited to the specific connection mode.

[0043] In the embodiment, the driving pins of adjacent sub-pixels are combined, that is, at least two sub-pixels share an anode connection point and / or a cathode connection point. The driving pin is a general term for the anode connection point and the cathode connection point. The driving pin is connected to the positive electrode of the power supply of the sub-pixel, and the driving pin is the anode connection point. Conversely, the driving pin is connected to the negative electrode of the power supply of the sub-pixel, and the driving pin is the cathode connection point. Since the display unit has no actual structure, in other embodiments, sub-pixels belonging to adjacent different display units can also share a driving pin.

[0044] In the embodiment, the driving pins of adjacent sub-pixels are combined, that is, at least two sub-pixels share an anode connection point and / or a cathode connection point. The driving pin is a general term for the anode connection point and the cathode connection point. The driving pin is connected to the positive electrode of the power supply of the sub-pixel, and the driving pin is the anode connection point. Conversely, the driving pin is connected to the negative electrode of the power supply of the sub-pixel, and the driving pin is the cathode connection point. Since the display unit has no actual structure, in other embodiments, sub-pixels belonging to adjacent different display units can also share a driving pin.

[0045] As shown in Figure 1 Two sub-pixels A and B can share an anode connection point, so that two sub-pixels A and B are provided with three driving pins in total, which can not only make the two sub-pixels A and B more closely arranged, but also reduce the number of driving pins and obtain a more compact structure. In this way, many sub-pixels in the display screen can be arranged in this way, so that more sub-pixels can be arranged in the display screen without changing the size, thereby improving the resolution of the display screen. Similarly, two sub-pixels share an anode connection point, and the anode connection point is changed to a cathode connection point, and the cathode connection points of the two sub-pixels are changed to anode connection points.

[0046] InFigure 1 In the fourth sub-pixel structure, four sub-pixel points CDEF can share one anode connection point, and each of the four sub-pixel points CDEF independently sets its own cathode connection point. Therefore, the four sub-pixel points CDEF set five driving pins in total as the anode connection point and the cathode connection point. Before the driving pins are combined, each sub-pixel point needs two driving pins. After the driving pins are combined, the sub-pixel point structure can be more compact, and the resolution of the display screen can be improved. Similarly, the structure in which four sub-pixel points share one cathode connection point is just the opposite.

[0047] It should be noted that, Figure 1 In the fourth sub-pixel structure, only one sub-pixel independently uses one anode connection point and one cathode connection point, two sub-pixels share one anode connection point, and four sub-pixels share one anode connection point. In addition to the structure shown in the fourth sub-pixel structure, Figure 1 In the fourth sub-pixel structure, four sub-pixel points CDEF can share one anode connection point, and each of the four sub-pixel points CDEF independently sets its own cathode connection point. Therefore, the four sub-pixel points CDEF set five driving pins in total as the anode connection point and the cathode connection point. Before the driving pins are combined, each sub-pixel point needs two driving pins. After the driving pins are combined, the sub-pixel point structure can be more compact, and the resolution of the display screen can be improved. Similarly, the structure in which four sub-pixel points share one cathode connection point is just the opposite. Figure 4-5 As shown in the fourth sub-pixel structure, two sub-pixel points share one anode connection point or one cathode connection point, and the four sub-pixel points are powered by fewer driving pins. In addition, three sub-pixel points can share one anode connection point or one cathode connection point. Specifically, when the sub-pixel points are staggered, as shown in the fourth sub-pixel structure, three sub-pixel points in two adjacent rows can share one anode connection point or one cathode connection point. Figure 3-2

[0048] Figure 1 As shown in the fourth sub-pixel structure, two sub-pixel points share one anode connection point or one cathode connection point, and the four sub-pixel points are powered by fewer driving pins. In addition, three sub-pixel points can share one anode connection point or one cathode connection point. Specifically, when the sub-pixel points are staggered, as shown in the fourth sub-pixel structure, three sub-pixel points in two adjacent rows can share one anode connection point or one cathode connection point.

[0049] It should be noted that, Figure 1 The sub-pixel in the fourth sub-pixel structure is square, and all the sub-pixels are arranged in one plane. However, the technical solution based on the present application is not limited to this. For the arrangement of sub-pixels, the prior art is arranged in one plane. In another embodiment, a new type of display device can arrange sub-pixels in multiple different planes, so that the arrangement of sub-pixels can form a three-dimensional array. In the three-dimensional array, the number of adjacent sub-pixels can be more, so that more sub-pixels can share one anode connection point or one cathode connection point.

[0050] ​In other embodiments, the shape of the sub-pixel points can be other close-packed patterns, such as regular hexagons, regular triangles, etc. The number of adjacent sub-pixel points can also increase or decrease due to changes in the shape of the sub-pixel points. The number of sub-pixel points sharing one anode connection point or one cathode connection point can also change. In summary, in the display unit of the display device, at least one anode connection point and / or one cathode connection point is shared by multiple sub-pixel points. That is, at least one of the N anode connection points connects the anode of the power supply and the anode of at least two of the multiple sub-pixel points; and / or at least one of the M cathode connection points connects the cathode of the power supply and the cathode of at least two of the multiple sub-pixel points.

[0051] In the above manner, the adjacent sub-pixel points are arranged more closely, more sub-pixel points are arranged on the same area of the display screen, space is saved, the density of the sub-pixel points is improved, and the purpose of improving the arrangement density of the sub-pixel points is achieved, thereby realizing the technical effects of improving the display quality of the LED display device and improving the resolution of the LED display device, and further solving the technical problem of insufficient resolution of the LED display device in the related art.

[0052] Optionally, each display unit includes four sub-pixel points; the four sub-pixel points are arranged in two rows and two columns to form one pixel point, the four sub-pixel points of the pixel point include three sub-pixel points of red, blue, and green respectively, and a fourth sub-pixel point having the same color as the diagonal sub-pixel point.

[0053] In an embodiment, since the shape of the sub-pixel point is a square, every four sub-pixel points are taken as one display unit, that is, one pixel point, the four sub-pixel points are arranged in a matrix of two rows and two columns, the four sub-pixel points include three sub-pixel points of red, blue, and green respectively, and a fourth sub-pixel point having the same color as the diagonal sub-pixel point. As shown in one display unit, Figure 4-2 considering that the resolutions of red and blue are lower and the brightness of green is the highest, and the resolution of the human eye to red and blue is not high, by setting the display unit to one red sub-pixel point, one blue sub-pixel point, and two green sub-pixel points, the two green sub-pixel points arranged diagonally adjacent to each other can improve the resolution of the LED display screen to a higher level. Combining the above Figure 4-2 display units, the arrangement structure of the sub-pixel points of the display screen as shown in Figure 4-1 is obtained.

[0054] In another embodiment, the display unit can also be arranged as one red sub-pixel, one green sub-pixel and two blue sub-pixels, and the two blue sub-pixels are arranged diagonally adjacent to each other. In this way, the proportion of blue in the display unit can be increased. In another embodiment, the display unit can also be arranged as one blue sub-pixel, one green sub-pixel and two red sub-pixels, and the two red sub-pixels are arranged diagonally adjacent to each other. In this way, the proportion of red in the display unit can be increased.

[0055] Optionally, the plurality of display units include a plurality of first display units and a plurality of second display units, and the plurality of first display units and the plurality of second display units are arranged in the row direction with a spacing therebetween. The color of the pair of sub-pixels on the diagonal line in the first display unit is opposite to the color of the pair of sub-pixels on the diagonal line in the same direction in the second display unit.

[0056] In the embodiment, the display unit is divided into two types, one is a first display unit arranged with four sub-pixels in a certain arrangement, and the other is a second display unit formed by transposing the two sub-pixels of different colors on the diagonal line in the first display unit. That is, the color of the pair of sub-pixels on the diagonal line in the first display unit is opposite to the color of the pair of sub-pixels on the diagonal line in the same direction in the second display unit. In this way, the two sub-pixels of different colors on the diagonal line are distributed in each row of sub-pixels, and the three sub-pixels of different colors are further uniformly distributed in each row of sub-pixels, thereby further improving the display quality and optimizing the display effect of the display device.

[0057] As shown in FIG. 1, Figure 5 As shown in FIG. 1, Figure 5 The four sub-pixels in the upper left corner are a first display unit, and the structure is The four sub-pixels adjacent to the right of the first display unit are a second display unit, and the structure is On the diagonal line in the direction of R and B, the colors of the two sub-pixels of the first display unit and the second display unit are opposite, so that each row of sub-pixels has both R and B, that is, both red sub-pixels and blue sub-pixels, so that the color is more uniform. On the diagonal line in the other direction of the first display unit and the second display unit, the two sub-pixels arranged are both G. Considering that the resolution of red and blue is low, the brightness of green is the highest, and the resolution of the human eye to red and blue is not high, the resolution of the display screen is improved.

[0058] The first display unit and the second display unit are arranged in the row direction with a spacing therebetween. In other embodiments, the first display unit can also be arranged in the column direction with a spacing therebetween, or arranged in the row direction and the column direction with a spacing therebetween, so that the three sub-pixels of different colors are further uniformly distributed in the display device, thereby improving the display quality and optimizing the display effect of the display device.

[0059] Optionally, the four sub-pixels are connected to the cathode or anode of the power supply through a first connection point, and each of the four sub-pixels is provided with its own four corresponding second connection points, and is connected to the anode or cathode of the power supply through the four second connection points respectively; wherein, when the first connection point is the anode connection point, the second connection point is the cathode connection point; when the first connection point is the cathode connection point, the second connection point is the anode connection point.

[0060] The first connection point mentioned above can be either an anode or a cathode connection point, and the second connection point mentioned above can also be either an anode or a cathode connection point. It should be noted that the first connection point and the second connection point must be one anode and one cathode to ensure effective power supply to the sub-pixel. Specifically, when the first connection point is an anode connection point, the second connection point is a cathode connection point; conversely, when the first connection point is a cathode connection point, the second connection point is an anode connection point.

[0061] like Figure 4-4 As shown, the four sub-pixels RGGB share a first connection point, which is the cathode connection point in the figure. Each of the four sub-pixels has its own corresponding second connection point, which is the anode connection point in the figure. The cathode and anode connection points can be interchanged to achieve the same function, thereby powering the four sub-pixels through five drive pins, making the arrangement of the four sub-pixels more compact and improving the resolution of the LED display device.

[0062] Optionally, two row-adjacent or column-adjacent sub-pixels among the four sub-pixels are connected to the anode or cathode of the power supply through a third connection point, and two column-adjacent or row-adjacent sub-pixels among the four sub-pixels are connected to the cathode or anode of the power supply through a fourth connection point. When the third connection point is an anode connection point, the fourth connection point is a cathode connection point; when the third connection point is a cathode connection point, the fourth connection point is an anode connection point.

[0063] The third connection point mentioned above can be either an anode or a cathode connection point, and the fourth connection point can also be either an anode or a cathode connection point. It should be noted that the third and fourth connection points must be one anode and one cathode to ensure effective power supply to the sub-pixel. Specifically, when the third connection point is an anode connection point, the fourth connection point is a cathode connection point; conversely, when the third connection point is a cathode connection point, the fourth connection point is an anode connection point.

[0064] like Figure 4-5As shown, the two adjacent sub-pixel points in the same row share one third connection point, which is an anode connection point in the figure, and the two adjacent sub-pixel points in the same column share one fourth connection point, which is a cathode connection point in the figure. The cathode connection point and the anode connection point have the same structure and can achieve the same function, so that the four sub-pixel points are powered through the four connection points, and the arrangement of the four sub-pixel points is more compact, thereby improving the resolution of the LED display device.

[0065] Optionally, the two adjacent sub-pixel points in the same row or the same column are connected to the anode or the cathode of the power supply through a fifth connection point, and the four sub-pixel points are respectively provided with four sixth connection points corresponding thereto and are connected to the anode or the cathode of the power supply through the four sixth connection points; when the fifth connection point is an anode connection point, the sixth connection point is a cathode connection point; when the fifth connection point is a cathode connection point, the sixth connection point is an anode connection point.

[0066] The fifth connection point can be an anode connection point or a cathode connection point, and the sixth connection point can be an anode connection point or a cathode connection point. It should be noted that the fifth connection point and the sixth connection point need to be one cathode and one anode to ensure effective power supply to the sub-pixel points. Specifically, when the fifth connection point is an anode connection point, the sixth connection point is a cathode connection point; when the fifth connection point is a cathode connection point, the sixth connection point is an anode connection point.

[0067] As shown in Figure 4-3 , the two adjacent sub-pixel points in the same row share one fifth connection point, which is a cathode connection point in the figure, and the two sub-pixel points are respectively provided with corresponding sixth connection points, which are anode connection points in the figure. The cathode connection point and the anode connection point have the same structure and can achieve the same function, so that the two sub-pixel points are powered through the three driving pins, and the arrangement of the two sub-pixel points is more compact, thereby improving the resolution of the LED display device.

[0068] Optionally, the sub-pixel points between the adjacent two rows in each first display unit and each second display unit are distributed in a staggered manner; or, the four sub-pixel points in each first display unit and each second display unit are distributed in a matrix of two rows and two columns.

[0069] The first display unit and the second display unit both have four sub-pixel points, which are arranged in two rows and two columns, and the sub-pixel points between the adjacent two rows are staggered, as shown in Figure 3-2 and Figure 5 , more sub-pixel points can be arranged in the same area, thereby achieving a 2-fold resolution improvement, greatly improving the resolution of the display device.

[0070] Of course, the four sub-pixel points in the first display unit and the second display unit can also be arranged in a matrix of two rows and two columns, such as Figure 4-1 to 4-5 The structure of the sub-pixel points is arranged in a standard matrix of two rows and two columns, and the anode connection point or the cathode connection point can be conveniently set.

[0071] Optionally, the two sub-pixel points in the same row in each first display unit and each second display unit are closely adjacent.

[0072] As shown in FIG. 1, Figure 5 In the first display unit and the second display unit, the two sub-pixel points in the same row are closely adjacent, such as Figure 5 In the first display unit and the second display unit, the two sub-pixel points in the same row are closely adjacent, such as

[0073] In other embodiments, the two sub-pixel points in the same column in the first display unit and the second display unit can also be closely adjacent. By closely arranging the two sub-pixel points in the same row or the same column, a common anode connection point or cathode connection point can be conveniently set, the sub-pixel points are arranged more closely, and thus the resolution of the display device is improved and the display quality is improved.

[0074] Optionally, the first preset distance is greater than the distance between the two adjacent sub-pixel points in each first display unit and each second display unit.

[0075] The first display unit and the second display unit are arranged in units of sub-pixel points in actual arrangement, and the sub-pixel points belonging to different first display units or second display units are adjacent to the sub-pixel points of other first display units or second display units, and the first preset distance is set, which can reserve a certain distance for the setting of the connection point, so as to avoid the problem that the sub-pixel points are arranged too closely and the connection point is difficult to set.

[0076] As shown in FIG. 1, Figure 5 The adjacent sub-pixel points of the first display unit RGGB and the second display unit BGGR include the G of the first display unit in the first row and the B of the second display unit, and the B of the first display unit in the second row and the G of the second display unit, and the distance therebetween is the first preset distance L. The first preset distance L is greater than the distance between the two adjacent sub-pixel points in each first display unit and the distance between the two adjacent sub-pixel points in each second display unit, including the distance between the two adjacent sub-pixel points in the same row or the distance S between the two adjacent sub-pixel points in the same column in Figure 5In some embodiments, the distance between two adjacent sub-pixels in the same row of the first display unit or the second display unit is zero, for example, as shown in FIG. 1A. Figure 5 In some embodiments, the two sub-pixels R and G in the first row of the first display unit are closely adjacent, and the distance between them is zero. It should be noted that in the present embodiment, the distance between two adjacent sub-pixels in the same row of the first display unit or the second display unit is zero, which is a preferred embodiment. In the embodiment, the distance between two adjacent sub-pixels in the same row of the first display unit or the second display unit can also be not zero and less than the first preset distance L. In this case, the first preset distance L can be greater than the distance between two adjacent sub-pixels in the same row of the first display unit and the second display unit, i.e., greater than zero. Alternatively, the first preset distance L can be greater than the distance between two adjacent sub-pixels in different rows of the first display unit and the second display unit, i.e., greater than S.

[0077] Optionally, the color of two adjacent sub-pixels in the same row of each first display unit is opposite to the color of two adjacent sub-pixels in another row of each second display unit.

[0078] Due to the opposite arrangement of two sub-pixels of different colors on the diagonal line in one direction of the first display unit and the second display unit, a sub-pixel of one color in the first row of the first display unit will appear in the second row of the second display unit, and the positions of the four sub-pixels are opposite.

[0079] As shown in FIG. 1A, the four sub-pixels in the first display unit RGGB are RG in the first row and GB in the second row, and the four sub-pixels in the second display unit BGGR are BG in the first row and GR in the second row. Figure 5 The RG in the first row of the first display unit RGGB is arranged opposite to the GR in the second row (the other row) of the second display unit BGGR. The GB in the second row of the first display unit RGGB is arranged opposite to the BG in the first row (the other row) of the second display unit BGGR.

[0080] In other embodiments, if the colors of the four sub-pixels in the first display unit and the second display unit are changed, for example, the first display unit is GRRB, and the structure is as shown in FIG. 1B. The corresponding second display unit is BRRG, and the structure is as shown in FIG. 1C. Alternatively, the first display unit is RBBG, and the structure is as shown in FIG. 1D. The corresponding second display unit is GBBR, and the structure is as shown in FIG. 1E. For the first display unit and the second display unit, the color of two sub-pixel points in the same row in each first display unit can also be opposite to the color of two sub-pixel points in another row in each second display unit. It should be noted that, in the above technical feature, the color of the two sub-pixel points is opposite, so that the color of the sub-pixel points in the first display unit and the second display unit is more uniform, so as to improve the display effect of the display screen. Therefore, the above technical feature can also be applied to some other structures of display units, for example, the first display unit is RGRB, and the structure is The corresponding second display unit is GRBR, and the structure is The effect of making the distribution of the sub-pixel points more uniform and improving the display quality of the display screen can also be achieved.

[0081] Optionally, each row of sub-pixel points includes two sub-pixel points in the same direction and diagonal color opposite in the first display unit and the second display unit.

[0082] In the first display unit and the second display unit, the two sub-pixel points of different colors on the diagonal line are opposite, so that in the same row of sub-pixel points, the two sub-pixel points of different colors in the first row of sub-pixel points in the first display unit also have the two sub-pixel points of different colors in the second row of sub-pixel points in the second display unit, that is, each row of sub-pixel points includes the two sub-pixel points of different colors in the first display unit and the second display unit, and the two sub-pixel points of different colors are arranged with another sub-pixel point of the same color on the diagonal line.

[0083] As shown in Figure 5 The four sub-pixel points in the first display unit RGGB are RG in the first row and GB in the second row, and the four sub-pixel points in the second display unit BGGR are BG in the first row and GR in the second row. Therefore, each row of sub-pixel points includes the interval distribution of R and B, and the interval sub-pixel points between R and B are G.

[0084] Figure 2 is a schematic view of another LED display device according to an embodiment of the present application, as Figure 2As shown, according to one aspect of the embodiment of the present application, another LED display device is also provided, comprising: a plurality of display units, each of the plurality of display units comprising four sub-pixel points, each of the plurality of display units comprising four sub-pixel points, the four sub-pixel points comprising three sub-pixel points respectively in red, blue and green, and a fourth sub-pixel point having the same color as a diagonal sub-pixel point, the plurality of display units comprising a plurality of third display units and a plurality of fourth display units, the plurality of third display units and the plurality of fourth display units being distributed in the row direction with intervals, the color of a pair of sub-pixel points located on one diagonal line in the third display unit being opposite to the color of a pair of sub-pixel points located on the same diagonal line in the fourth display unit.

[0085] Through the above device, a plurality of display units are adopted, each of the plurality of display units comprising four sub-pixel points, the plurality of display units comprising a plurality of third display units and a plurality of fourth display units, the plurality of third display units and the plurality of fourth display units being distributed in the row direction with intervals, the color of a pair of sub-pixel points located on one diagonal line in the third display unit being opposite to the color of a pair of sub-pixel points located on the same diagonal line in the fourth display unit, and the color of a pair of sub-pixel points located on another diagonal line in the third display unit and the fourth display unit being the same, the different color sub-pixel points in the display unit are distributed more uniformly in this way, thereby achieving the technical effect of improving the display quality of the LED display device, and further solving the technical problem of insufficient resolution of the LED display device in the related art.

[0086] As shown in the first display unit RGGB and the second display unit GBRG, the color of the pair of sub-pixel points on the diagonal line opposite to each other in the first display unit and the second display unit is different, which can be R and B, and the color of the pair of sub-pixel points on the other diagonal line in the first display unit and the second display unit is the same, which can be G. Figure 5 As shown in the third display unit RGGB and the fourth display unit BGGR, the color of the pair of sub-pixel points on the diagonal line opposite to each other in the third display unit and the fourth display unit is different, which can be R and B, and the color of the pair of sub-pixel points on the other diagonal line in the third display unit and the fourth display unit is the same, which can be G.

[0087] The third display unit and the fourth display unit are the same as the first display unit and the second display unit in structure, arrangement and effect.

[0088] Specifically, the four sub-pixel points in each third display unit and each fourth display unit are uniformly distributed in a two-row and two-column matrix.

[0089] Optionally, the four sub-pixel points in each third display unit and each fourth display unit are distributed in a two-row and two-column matrix, or the sub-pixel points between the adjacent two rows in each third display unit and each fourth display unit are distributed in a staggered manner.

[0090] Optionally, two sub-pixel points in the same row in each third display unit and each fourth display unit are closely adjacent.

[0091] Optionally, a third preset distance is provided between the adjacent sub-pixel points between the third display unit and the fourth display unit, wherein the third preset distance is greater than the distance between the two adjacent sub-pixel points in each third display unit and each fourth display unit.

[0092] Optionally, the color of the two adjacent sub-pixel points in the same row in each third display unit is opposite to the color of the two adjacent sub-pixel points in another row in each fourth display unit.

[0093] Optionally, each row of sub-pixel points includes two sub-pixel points in the same direction diagonal line in the third display unit and the fourth display unit, and the colors of the two sub-pixel points are opposite.

[0094] In use, the LED device can be powered on all sub-pixel points of the LED display device through the driving pin connected to the power supply, wherein the LED display device includes a plurality of display units, the display unit includes a plurality of sub-pixel points, and the adjacent sub-pixel points in the plurality of sub-pixel points share one driving pin, and the shared driving pin is connected to the positive or negative pole of the power supply. The driving pin is the connection point, the driving pin connected to the positive pole of the power supply is the anode connection point, and the driving pin connected to the negative pole of the power supply is the cathode connection point.

[0095] It should be noted that the present application also provides an optional embodiment, which will be described in detail below.

[0096] The three-lamp RGB scheme and the four-lamp scheme (RGGB / RGRB / RBGB) of the present embodiment are as follows:

[0097] Figure 3-1 is a schematic diagram of the three-lamp scheme according to the present embodiment, and as shown in Figure 3-1 , it is the sub-pixel point arrangement of the three-lamp RGB scheme.

[0098] Figure 3-2 is a schematic diagram of the Delta three-lamp scheme according to the present embodiment, and as shown in Figure 3-2 , it is the sub-pixel point arrangement of the Delta three-lamp RGB scheme. The Delta three-lamp arrangement can achieve a 2-fold resolution improvement compared to the traditional arrangement.

[0099] Figure 4-1 is a schematic diagram of the four-lamp scheme according to the present embodiment, and as shown in Figure 4-1As shown, this illustrates the subpixel arrangement of the four-lamp RGGB scheme. The green color achieves a 3x resolution improvement compared to the three-lamp scheme. While the red and blue colors have lower resolution, considering that green has the highest brightness and the human eye's ability to distinguish between red and blue is relatively low, the four-lamp scheme offers a significant resolution improvement. The RGRB and RBGB arrangements in the four-lamp scheme are similar.

[0100] This implementation addresses the issue of uneven red and blue LED distribution and further increases LED dot density. It reduces solder joints and connecting wires through two-in-one or four-in-one technology.

[0101] Traditional RGB subpixels, also known as subpixel points, require two solder points: a cathode connection point and an anode connection point for each subpixel.

[0102] By using the two-in-one technology, two sub-pixels share a single cathode or anode connection point, thereby reducing one solder joint.

[0103] Figure 4-2 This is a schematic diagram of a four-lamp driving scheme according to an embodiment of the present invention, as shown below. Figure 4-2 As shown, the traditional solder joint for a single subpixel consists of two drive pins soldered to the bottom of each subpixel point, which are connected to the positive and negative terminals of the power supply, respectively.

[0104] Figure 4-3 This is a schematic diagram of a four-lamp two-in-one driving scheme according to an embodiment of the present invention, as shown below. Figure 4-3 As shown, after the two are combined, the common cathode can allow two adjacent sub-pixels to share a single cathode connection point drive pin, and power four sub-pixels through six drive pins.

[0105] Figure 4-4 This is a schematic diagram of a four-lamp four-in-one driving scheme according to an embodiment of the present invention, as shown below. Figure 4-4 As shown, after combining four sub-pixels into one, the common cathode allows four sub-pixels to share a single drive pin, with each sub-pixel having its own corresponding anode connection point with four drive pins. This allows power to be supplied to the four sub-pixels through five drive pins, resulting in a denser arrangement of the four sub-pixels and improved resolution of the LED display device.

[0106] Figure 4-5 This is a schematic diagram of another four-lamp four-in-one driving scheme according to an embodiment of the present invention, as shown below. Figure 4-5 As shown, after combining four sub-pixels into one, the common cathode design allows two adjacent sub-pixels (either row-adjacent or column-adjacent) to share a single driving pin as a common cathode connection point, and two adjacent sub-pixels (either row-adjacent or column-adjacent) to share a single driving pin as a common anode connection point. This allows power to be supplied to the four sub-pixels through four driving pins, resulting in a denser arrangement of the four sub-pixels and improving the resolution of the LED display device.

[0107] The co-anode scheme, in Figure 4-3 to Figure 4-5 The same can be used in a way that the cathode and anode are reversed.

[0108] In the four-lamp scheme of COB, each LED lamp needs two pins. If the resolution is further improved, in addition to reducing the size of the LED chip itself, reducing the number of driving pins is also an effective method. And the present embodiment further reduces the pin number of the LED lamp through the 2-in-1 or 4-in-1 method. For example, the original RGBG needs 8 pins, the 2-in-1 scheme only needs 6 pins, the 4-in-1 scheme only needs 5 pins, and even 4 pins, so that each sub-pixel can be arranged more closely together.

[0109] The present embodiment also provides a method of arranging RB as evenly as possible, which is as follows:

[0110] Figure 5 is a schematic diagram of the four-lamp arrangement according to the embodiment of the present application, as Figure 5 shown, through the 2-in-1 or 4-in-1 technology, R and G or B and G can be combined more closely, so that R and B have the opportunity to be distributed on different rows.

[0111] In the new 4-lamp arrangement scheme, the first feature is that red sub-pixels and blue sub-pixels are distributed in each row. The second feature is that one red is closely adjacent to one green, and one blue is closely adjacent to one green.

[0112] The third feature is that the relative positions of red and green change, such as the red in the first row being on the left of the green, and the red in the second row being on the right of the green.

[0113] The fourth feature is that the relative positions of blue and green also change, as with the positions of red and green.

[0114] The fifth feature is that red-green and blue-green sub-pixels are closely attached to each other. For example, the first red and the first green in the first row are closely attached to each other, and the distance is at least less than the distance between the first green and the first blue in the first row.

[0115] The present embodiment reduces the number of pins for driving the LED lamp through the multi-in-1 method, reduces the number of driving lines, and makes R and B more evenly distributed in space, thereby improving the visual effect of R and B. The two-lamp or four-lamp-in-one method is used for driving. Red and blue are closely connected with green, and the distribution of RB is more uniform.

[0116] The above-mentioned embodiment numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0117] In the above-mentioned embodiments of the present application, the description of each embodiment is focused on, and the part not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0118] In several embodiments provided in the present application, it should be understood that the disclosed technical contents can be implemented by other ways. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and in actual implementation, there can be another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or modules shown or discussed can be indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0119] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on a plurality of units. According to the actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0120] The above-mentioned is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. An LED display device, characterized in that, include: Multiple display units, Each of the display units includes four sub-pixels; The four sub-pixels are arranged in two rows and two columns to form a pixel. The four sub-pixels of the pixel include three sub-pixels that are red, blue and green respectively, and a fourth sub-pixel that has the same color as the diagonal sub-pixel. The display unit further includes N anode connection points and M cathode connection points. The anodes of multiple sub-pixels are connected to the anodes of an external power supply through the N anode connection points, and the cathodes of the multiple sub-pixels are connected to the cathodes of the power supply through the M cathode connection points. Here, N and M are both positive integers greater than or equal to 1. Wherein, at least one of the N anode connection points is connected to the anode of the power supply and the anodes of at least two of the plurality of sub-pixel points; and / or At least one of the M cathode connection points is connected to the cathode of the power supply and the cathodes of at least two of the plurality of sub-pixel points. The four sub-pixels are connected to the cathode or anode of the power supply via a first connection point. Each of the four sub-pixels has four corresponding second connection points, and each of the four second connection points is connected to the anode or cathode of the power supply. Wherein, when the first connection point is an anode connection point, the second connection point is a cathode connection point; when the first connection point is a cathode connection point, the second connection point is an anode connection point; or... Of the four sub-pixels, two adjacent sub-pixels (either row-oriented or column-oriented) are connected to the anode or cathode of the power supply via a third connection point. Two adjacent sub-pixels (either column-oriented or row-oriented) are connected to the cathode or anode of the power supply via a fourth connection point. Wherein, if the third connection point is an anode connection point, the fourth connection point is a cathode connection point; if the third connection point is a cathode connection point, the fourth connection point is an anode connection point. Alternatively... Two adjacent sub-pixels in a row or column among the four sub-pixels are connected to the anode or cathode of the power supply through a fifth connection point. Each of the four sub-pixels is provided with its own four corresponding sixth connection points, and is connected to the anode or cathode of the power supply through the four sixth connection points respectively. Wherein, when the fifth connection point is the anode connection point, the sixth connection point is the cathode connection point; when the fifth connection point is the cathode connection point, the sixth connection point is the anode connection point.

2. The LED display device according to claim 1, characterized in that, The plurality of display units include a plurality of first display units and a plurality of second display units, which are spaced apart in the row direction. The color of a pair of sub-pixels located on the diagonal in the first display unit is opposite to the color of a pair of sub-pixels located on the same diagonal in the second display unit.

3. The LED display device according to claim 2, characterized in that, Subpixel misalignment between adjacent rows in each of the first display unit and each of the second display units; Alternatively, the four sub-pixels in each of the first display units and each of the second display units are distributed in a two-row, two-column matrix.

4. The LED display device according to claim 2 or 3, characterized in that, Two sub-pixels in the same row within each of the first display unit and each of the second display units are closely adjacent to each other.

5. The LED display device according to claim 2 or 3, characterized in that, A first preset distance is set between adjacent sub-pixels between the first display unit and the second display unit, wherein the first preset distance is greater than the distance between two adjacent sub-pixels within each of the first display unit and each of the second display units.

6. The LED display device according to claim 2 or 3, characterized in that, The colors of two adjacent subpixels in the same row within each of the first display units are swapped with the colors of two adjacent subpixels in another row within each of the second display units.

7. The LED display device according to claim 2 or 3, characterized in that, Each row of subpixels includes two subpixels with opposite colors on the diagonal in the same direction in the first and second display units.

Images