LED display device and LED display panel

Abstract

The utility model discloses an LED display device and an LED display panel, wherein the LED display device comprises a substrate, and two groups of LED light-emitting chips are arranged on the front of the substrate, and any group of LED light-emitting chips comprises a first LED light-emitting chip, a second LED light-emitting chip, and a third LED light-emitting chip, and the first LED light-emitting chip, the second LED light-emitting chip, and the third LED light-emitting chip of the same group of LED light-emitting chips are arranged in a triangle; the light-emitting colors of the first LED light-emitting chip, the second LED light-emitting chip, and the third LED light-emitting chip are one of three primary colors of red, green, and blue, and are different from each other. Each LED light-emitting chip in the LED display device provided by the utility model can be reused by two virtual pixel units, and the number of LED light-emitting chips is reduced by half while achieving the same number of pixel units, thereby effectively improving pixel density and reducing production costs.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display devices, in particular to an LED display device and an LED display panel. Background Art

[0002] At present, the main way to increase the display density on LED display panels is to increase the number of LED light-emitting chips per unit area of ​​the LED display panel to increase the pixel density. This method requires a large number of LED light-emitting chips to achieve the same pixel density, resulting in high costs, and high line density, resulting in complex wiring and driving. The use of dynamic virtual pixels can also increase pixel density, but the newly developed dynamic virtual pixel solution is not mature enough, has a high production cost, and the actual display effect is not ideal. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art. The utility model provides an LED display device and an LED display panel, each of which has an LED light-emitting chip that can be reused by two virtual pixel units. The number of LED light-emitting chips is reduced by half while achieving the same number of pixel units, thereby effectively improving pixel density and reducing production costs.

[0004] The utility model provides an LED display device, the LED display device comprises a substrate, two groups of LED light-emitting chips are arranged on the front of the substrate, including a first group of LED light-emitting chips and a second group of LED light-emitting chips, any group of LED light-emitting chips comprises a first LED light-emitting chip, a second LED light-emitting chip, and a third LED light-emitting chip, and the first LED light-emitting chip, the second LED light-emitting chip, and the third LED light-emitting chip of the same group of LED light-emitting chips are arranged in a triangle;

[0005] The orientation of the triangle formed by the first group of LED light-emitting chips with the first LED light-emitting chip as the vertex is opposite to the orientation of the triangle formed by the second group of LED light-emitting chips with the first LED light-emitting chip as the vertex, and the first LED light-emitting chip of the first group of LED light-emitting chips and the first LED light-emitting chip of the second group of LED light-emitting chips are arranged diagonally on the substrate;

[0006] The light emitting colors of the first LED light emitting chip, the second LED light emitting chip and the third LED light emitting chip are one of three primary colors of red, green and blue and are different from each other.

[0007] Furthermore, a plurality of pins are arranged on the back side of the substrate, and any one of the LED light-emitting chips includes a first electrode and a second electrode, and the first electrode and the second electrode of the LED light-emitting chip are connected to the plurality of pins correspondingly.

[0008] Furthermore, the first electrode and the second electrode of the LED light-emitting chip are electrically connected to the plurality of pins via conductive holes penetrating the substrate.

[0009] Further, the plurality of pins include a positive pin of a first LED light-emitting chip, a positive pin of a second LED light-emitting chip, a positive pin of a third LED light-emitting chip, a positive pin of a fourth LED light-emitting chip, a positive pin of a fifth LED light-emitting chip, a positive pin of a sixth LED light-emitting chip, a negative pin of a first LED light-emitting chip, and a negative pin of a second LED light-emitting chip;

[0010] The positive pin of the first LED light-emitting chip is connected to the first electrode of the first LED light-emitting chip of the first group of LED light-emitting chips, the positive pin of the second LED light-emitting chip is connected to the first electrode of the second LED light-emitting chip of the first group of LED light-emitting chips, the positive pin of the third LED light-emitting chip is connected to the first electrode of the third LED light-emitting chip of the first group of LED light-emitting chips, the positive pin of the fourth LED light-emitting chip is connected to the first electrode of the first LED light-emitting chip of the second group of LED light-emitting chips, the positive pin of the fifth LED light-emitting chip is connected to the first electrode of the second LED light-emitting chip of the second group of LED light-emitting chips, the positive pin of the sixth LED light-emitting chip is connected to the first electrode of the third LED light-emitting chip of the second group of LED light-emitting chips, the negative pin of the first LED light-emitting chip is connected to the second electrodes of the three LED light-emitting chips of the first group of LED light-emitting chips, and the negative pin of the second LED light-emitting chip is connected to the second electrodes of the three LED light-emitting chips of the second group of LED light-emitting chips.

[0011] Furthermore, the anode pin of the second LED light emitting chip is connected to the anode pin of the fifth LED light emitting chip, and the anode pin of the third LED light emitting chip is connected to the anode pin of the sixth LED light emitting chip.

[0012] Furthermore, positioning ink is also provided on the back side of the substrate.

[0013] Furthermore, the cross section of the LED display device is a square, and the side length a1 of the LED display device is 0.4 mm-3 mm.

[0014] Furthermore, the cross-sectional dimensions of any two pins are the same, and the side length a2 of any one of the pins is 0.1 mm-0.7 mm.

[0015] Further, in the same group of LED light-emitting chips, the second LED light-emitting chip and the third LED light-emitting chip have the same coordinates in the horizontal direction, and the distance l1 between the first LED light-emitting chip and the second LED light-emitting chip in the horizontal direction is 0.3 mm-1.5 mm;

[0016] A distance l2 between the first LED light-emitting chip of the first group of LED light-emitting chips and the first LED light-emitting chip of the second group of LED light-emitting chips in the vertical direction is 0.3 mm-1.5 mm.

[0017] The utility model also provides an LED display panel, which includes a plurality of the above-mentioned LED display devices, and the plurality of LED display devices are arranged in an array of m rows and n columns, where m is a positive integer and n is a positive integer.

[0018] The utility model provides an LED display device and an LED display panel, wherein each LED light-emitting chip can be reused by two virtual pixel units at the same time, and the number of LED light-emitting chips is reduced by half while achieving the same number of pixel units and pixel pitch. The design is simpler and the manufacturing difficulty is low, and the pixel density is effectively increased, the production cost is reduced, and the display accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the front structure of the LED display device in the first embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the back structure of the LED display device in the first embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the front dimensions of the LED display device in the first embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the back dimensions of the LED display device in the first embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the cross-sectional dimensions of the LED display device in the first embodiment of the present utility model;

[0025] Figure 6This is a schematic diagram of the front structure of the LED display panel in the second embodiment of the present utility model;

[0026] Figure 7 It is a schematic diagram of the back connection structure of the LED display panel in the second embodiment of the present utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] Embodiment 1 of the present invention provides an LED display device, which includes a substrate. Two groups of LED light-emitting chips are arranged on the front of the substrate, including a first group of LED light-emitting chips and a second group of LED light-emitting chips. Any group of LED light-emitting chips includes a first LED light-emitting chip, a second LED light-emitting chip, and a third LED light-emitting chip. The first LED light-emitting chip, the second LED light-emitting chip, and the third LED light-emitting chip of the same group of LED light-emitting chips are arranged in a triangle.

[0030] In an optional implementation of this embodiment, Figure 1 As shown, Figure 1 A schematic diagram of the front structure of an LED display device in Embodiment 1 of the present invention is shown, wherein the LED display device comprises a substrate 1, wherein two groups of LED light-emitting chips are arranged on the front of the substrate 1, including a first group of LED light-emitting chips and a second group of LED light-emitting chips, wherein the first group of LED light-emitting chips comprises a first group of first LED light-emitting chips 21, a first group of second LED light-emitting chips 22, and a first group of third LED light-emitting chips 23, wherein the second group of LED light-emitting chips comprises a second group of first LED light-emitting chips 31, a second group of second LED light-emitting chips 32, and a second group of third LED light-emitting chips 33, wherein the first group of first LED light-emitting chips 21, the first group of second LED light-emitting chips 22, and the first group of third LED light-emitting chips 23 are arranged in a triangle, and the second group of first LED light-emitting chips 31, the second group of second LED light-emitting chips 32, and the second group of third LED light-emitting chips 33 are arranged in a triangle.

[0031] In an optional implementation of this embodiment, the orientation of the triangle formed by the first group of LED light-emitting chips with the first LED light-emitting chip as the vertex is opposite to the orientation of the triangle formed by the second group of LED light-emitting chips with the first LED light-emitting chip as the vertex.

[0032] Specifically, the triangle with the first group first LED light-emitting chip 21 as the vertex and the first group second LED light-emitting chip 22 and the first group third LED light-emitting chip 23 as the base vertices is oriented horizontally to the right, and the triangle with the second group first LED light-emitting chip 31 as the vertex and the second group second LED light-emitting chip 32 and the second group third LED light-emitting chip 33 as the base vertices is oriented horizontally to the left.

[0033] In an optional implementation of this embodiment, the first LED light-emitting chip of the first group of LED light-emitting chips and the first LED light-emitting chip of the second group of LED light-emitting chips are arranged diagonally on the substrate.

[0034] Specifically, the first group of first LED light-emitting chips 21 are located at the upper right corner of the substrate 1 , and the second group of first LED light-emitting chips 31 are located at the lower left corner of the substrate 1 .

[0035] In an optional implementation of this embodiment, the light emitting colors of the first LED light emitting chip, the second LED light emitting chip, and the third LED light emitting chip are one of three primary colors of red, green, and blue, and are different from each other.

[0036] Specifically, the light emitting colors of the first group of first LED light-emitting chips 21, the first group of second LED light-emitting chips 22, and the first group of third LED light-emitting chips 23 are one of the three primary colors of red, green, and blue, and are different from each other; the light emitting colors of the second group of first LED light-emitting chips 31, the second group of second LED light-emitting chips 32, and the second group of third LED light-emitting chips 33 are one of the three primary colors of red, green, and blue, and are different from each other.

[0037] In an optional implementation of the present embodiment, the first LED light-emitting chip is a red LED light-emitting chip, the second LED light-emitting chip is a green LED light-emitting chip, and the third LED light-emitting chip is a blue LED light-emitting chip; or the first LED light-emitting chip is a red LED light-emitting chip, the second LED light-emitting chip is a blue LED light-emitting chip, and the third LED light-emitting chip is a green LED light-emitting chip; or the first LED light-emitting chip is a green LED light-emitting chip, the second LED light-emitting chip is a red LED light-emitting chip, and the third LED light-emitting chip is a blue LED light-emitting chip; or the first LED light-emitting chip is a green LED light-emitting chip, the second LED light-emitting chip is a blue LED light-emitting chip, and the third LED light-emitting chip is a red LED light-emitting chip; or the first LED light-emitting chip is a blue LED light-emitting chip, the second LED light-emitting chip is a red LED light-emitting chip, and the third LED light-emitting chip is a green LED light-emitting chip; or the first LED light-emitting chip is a blue LED light-emitting chip, the second LED light-emitting chip is a green LED light-emitting chip, and the third LED light-emitting chip is a red LED light-emitting chip.

[0038] Specifically, in the present embodiment, the first group of first LED light-emitting chips 21 and the second group of first LED light-emitting chips 31 are red LED light-emitting chips, the first group of second LED light-emitting chips 22 and the second group of second LED light-emitting chips 32 are green LED light-emitting chips, and the first group of third LED light-emitting chips 23 and the second group of third LED light-emitting chips 33 are blue LED light-emitting chips.

[0039] In an optional implementation of this embodiment, a plurality of pins are provided on the back side of the substrate, and any one of the LED light-emitting chips includes a first electrode and a second electrode, and the first electrode and the second electrode of the LED light-emitting chip are correspondingly connected to the plurality of pins.

[0040] In an optional implementation of this embodiment, the first electrode and the second electrode of the LED light-emitting chip are electrically connected to the plurality of pins via conductive holes penetrating the substrate.

[0041] Specifically, Figure 2 As shown, Figure 2 A schematic diagram of the back structure of the LED display device in the first embodiment of the utility model is shown, wherein the substrate 1 is provided with a plurality of conductive holes 49 penetrating the substrate 1, wherein four conductive holes 49 are provided at the four corners of the substrate 1, and four conductive holes 49 are provided at the central positions of the four sides of the substrate 1, the conductive holes 49 provided at the four corners of the substrate 1 are quarter-circular holes, and the conductive holes 49 provided at the four sides of the substrate 1 are half-circular holes.

[0042] Furthermore, eight pins are provided on the back side of the substrate 1, including a positive pin 41 of a first LED light-emitting chip, a positive pin 42 of a second LED light-emitting chip, a positive pin 43 of a third LED light-emitting chip, a positive pin 44 of a fourth LED light-emitting chip, a positive pin 45 of a fifth LED light-emitting chip, a positive pin 46 of a sixth LED light-emitting chip, a negative pin 47 of a first LED light-emitting chip, and a negative pin 48 of a second LED light-emitting chip. The positive pin 41 of the first LED light-emitting chip is connected to the first electrode of the first group of first LED light-emitting chips 21, the positive pin 42 of the second LED light-emitting chip is connected to the first electrode of the first group of second LED light-emitting chips 22, the positive pin 43 of the third LED light-emitting chip is connected to the first electrode of the first group of third LED light-emitting chips 23, the positive pin 44 of the fourth LED light-emitting chip is connected to the first electrode of the second group of first LED light-emitting chips 31, the positive pin 45 of the fifth LED light-emitting chip is connected to the first electrode of the second group of second LED light-emitting chips 32, and the positive pin 46 of the sixth LED light-emitting chip is connected to the first electrode of the second group of third LED light-emitting chips 33.

[0043] Furthermore, the negative electrode pin 47 of the first LED light-emitting chip is connected to the second electrode of the first group of first LED light-emitting chips 21, the second electrode of the first group of second LED light-emitting chips 22, and the second electrode of the first group of third LED light-emitting chips 23, and the negative electrode pin 48 of the second LED light-emitting chip is connected to the second electrode of the second group of first LED light-emitting chips 31, the second electrode of the second group of second LED light-emitting chips 32, and the second electrode of the second group of third LED light-emitting chips 33.

[0044] It should be noted that, in this embodiment, the first electrode is a positive electrode, and the second electrode is a negative electrode.

[0045] In an optional implementation of this embodiment, the anode pin of the second LED light emitting chip is connected to the anode pin of the fifth LED light emitting chip, and the anode pin of the third LED light emitting chip is connected to the anode pin of the sixth LED light emitting chip.

[0046] Specifically, the anode pin 42 of the second LED light emitting chip is connected to the anode pin 45 of the fifth LED light emitting chip, and the anode pin 43 of the third LED light emitting chip is connected to the anode pin 46 of the sixth LED light emitting chip.

[0047] In an optional implementation of this embodiment, a positioning ink 5 is further provided on the back side of the substrate 1 .

[0048] In an optional implementation of this embodiment, the cross section of the LED display device is a square, and the side length a1 of the LED display device is 0.4 mm-3 mm.

[0049] Specifically, Figure 3 As shown, Figure 3 The schematic diagram of the front dimensions of the LED display device in the first embodiment of the utility model is shown. The cross section of the substrate 1 of the LED display device is a square, and the side length a1 of the substrate 1 is 0.4 mm-3 mm.

[0050] Furthermore, the side length a1 of the substrate 1 can be a value among 0.4 mm, 1 mm, 2 mm, 3 mm, etc., which is determined according to actual needs.

[0051] In an optional implementation of this embodiment, in the same group of LED light-emitting chips, the second LED light-emitting chip and the third LED light-emitting chip have the same coordinates in the horizontal direction, and the distance l1 between the first LED light-emitting chip and the second LED light-emitting chip in the horizontal direction is 0.3mm-1.5mm.

[0052] Specifically, Figure 3 As shown, in the first group of LED light-emitting chips, the first group of second LED light-emitting chips 22 and the first group of third LED light-emitting chips 23 have the same coordinates in the horizontal direction, and the first group of first LED light-emitting chips 21 and the first group of second LED light-emitting chips 22 have a horizontal distance l1 of 0.3mm-1.5mm.

[0053] Furthermore, the distance l1 between the first group of first LED light-emitting chips 21 and the first group of second LED light-emitting chips 22 in the horizontal direction can be a value among 0.3 mm, 0.5 mm, 1 mm, 1.5 mm, etc., which is determined according to actual needs.

[0054] In an optional implementation of this embodiment, a distance l2 in the vertical direction between the first LED light-emitting chip of the first group of LED light-emitting chips and the first LED light-emitting chip of the second group of LED light-emitting chips is 0.3 mm-1.5 mm.

[0055] Specifically, the distance l2 between the first group of first LED light-emitting chips 21 and the second group of first LED light-emitting chips 31 in the vertical direction is 0.3 mm-1.5 mm.

[0056] Furthermore, the distance l2 between the first group of first LED light-emitting chips 21 and the second group of first LED light-emitting chips 31 in the vertical direction can be a value among 0.3 mm, 0.5 mm, 1 mm, 1.5 mm, etc., which is determined according to actual needs.

[0057] In an optional implementation of this embodiment, the cross-sectional dimensions of any two pins are the same, and the side length a2 of any one of the pins is 0.1 mm-0.7 mm.

[0058] Specifically, Figure 4 As shown, Figure 4 A schematic diagram of the back dimensions of the LED display device in Example 1 of the utility model is shown, in which the cross-sectional dimensions of the first LED light-emitting chip positive pin 41, the second LED light-emitting chip positive pin 42, the third LED light-emitting chip positive pin 43, the fourth LED light-emitting chip positive pin 44, the fifth LED light-emitting chip positive pin 45, the sixth LED light-emitting chip positive pin 46, the first LED light-emitting chip negative pin 47, and the second LED light-emitting chip negative pin 48 are all the same, and their side length a2 is 0.1mm-0.7mm.

[0059] Furthermore, the side length a2 of the pin may be a value among 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, etc., determined according to actual needs.

[0060] In an optional implementation of this embodiment, the thickness h of the LED display device is 0.3 mm-0.9 mm.

[0061] Specifically, Figure 5 As shown, Figure 5 The schematic diagram of the cross-sectional dimensions of the LED display device in the first embodiment of the utility model is shown. The thickness of the LED display device, that is, the total thickness h of the substrate 1 and the pins is 0.3 mm-0.9 mm.

[0062] The side length of the substrate, the distance between the LED light-emitting chips, the side length of the pins, and the total thickness of the substrate and pins are designed here to make it compatible with the specifications of existing product production equipment and reduce the difficulty of production.

[0063] In summary, the first embodiment of the utility model provides an LED display device, which is used on the LED display panel in the second embodiment. Each LED light-emitting chip can be multiplexed by two virtual pixel units at the same time, and the number of LED light-emitting chips is reduced by half while achieving the same number of pixel units and pixel pitch. The design is simpler and the manufacturing difficulty is low, which effectively improves the pixel density, reduces the production cost, and improves the display accuracy.

[0064] Embodiment 2

[0065] Embodiment 2 of the present invention provides an LED display panel, which includes a plurality of LED display devices described in Embodiment 1, wherein the plurality of LED display devices are arranged in an array of m rows and n columns, where m is a positive integer and n is a positive integer.

[0066] In an optional implementation of this embodiment, Figure 6 As shown, Figure 6 A schematic diagram of the front structure of an LED display panel in the second embodiment of the present invention is shown. The LED display panel includes 16 LED display devices described in the first embodiment, which are arranged in an array of 4 rows and 4 columns.

[0067] In an optional implementation of the present embodiment, the LED display panel includes 2m rows (2n-1) columns of pixel units, each pixel unit includes three LED light-emitting chips, including a first LED light-emitting chip, a second LED light-emitting chip, and a third LED light-emitting chip, and the three LED light-emitting chips are arranged in a triangle.

[0068] Specifically, the LED display panel includes 8 rows and 7 columns of pixel units.

[0069] In an optional implementation of this embodiment, the pixel unit includes two types of pixel units, wherein the first type of pixel unit has the first LED light-emitting chip as a triangle vertex, the second LED light-emitting chip and the third LED light-emitting chip as triangle base vertices, and faces horizontally to the right, such as Figure 6 A first pixel unit 61;

[0070] The second type of pixel unit is a pixel unit with the first LED light emitting chip as the vertex of the triangle, the second LED light emitting chip and the third LED light emitting chip as the vertices of the base of the triangle, and facing horizontally to the left, such as Figure 6 The second pixel unit 62 in.

[0071] It should be noted that the first pixel unit 61 has the same structure as the first group of LED light-emitting chips in the first embodiment, and the second pixel unit 62 has the same structure as the second group of LED light-emitting chips in the first embodiment.

[0072] In an optional implementation of this embodiment, when m is an odd number and n is an odd number, or m is an even number and n is an even number, the pixel unit in the mth row and the nth column is a first type of pixel unit;

[0073] When m is an odd number and n is an even number, or m is an odd number and n is an even number, the pixel unit in the mth row and the nth column is the second type of pixel unit.

[0074] Specifically, Figure 6 As shown, the pixel units at (1,1), (1,3), (3,1), and (8,6) are the first type of pixel units 61, and the remaining pixel units are similar.

[0075] More, such as Figure 6As shown, the pixel units at (1, 2), (2, 1), (7, 2), and (8, 1) are the second type of pixel units 62, and the remaining pixel units are similar.

[0076] In an optional implementation of the present embodiment, the pixel unit at (1,1) is composed of the first group of first LED light-emitting chips, the first group of second LED light-emitting chips, and the first group of third LED light-emitting chips of the LED display device at (1,1), and the pixel unit at (1,2) is composed of the first group of first LED light-emitting chips of the LED display device at (1,1), the first group of second LED light-emitting chips, and the first group of third LED light-emitting chips of the LED display device at (1,2), that is, the first group of first LED light-emitting chips of the LED display device at (1,1) are reused by the pixel unit at (1,1) and the pixel unit at (1,2), respectively.

[0077] In an optional implementation of the present embodiment, the pixel unit at (2,1) is composed of the second group of first LED light-emitting chips, the second group of second LED light-emitting chips, and the second group of third LED light-emitting chips of the LED display device at (1,1), and the pixel unit at (2,2) is composed of the second group of second LED light-emitting chips, the second group of third LED light-emitting chips of the LED display device at (1,1), and the second group of first LED light-emitting chips of the LED display device at (1,2), that is, the second group of second LED light-emitting chips and the second group of third LED light-emitting chips of the LED display device at (1,1) are reused by the pixel unit at (2,1) and the pixel unit at (2,2), respectively.

[0078] In an optional implementation of this embodiment, by analogy, on the LED display panel, all LED light-emitting chips are reused by two pixel units.

[0079] In an optional implementation of this embodiment, Figure 7 As shown, Figure 7 A schematic diagram of the connection structure on the back side of the LED display panel in the second embodiment of the present utility model is shown, in which the positive pins of the first LED light-emitting chip and the fourth LED light-emitting chip of the LED display devices in the same column are connected to each other, the positive pins of the second LED light-emitting chip and the fifth LED light-emitting chip of the LED display devices in the same column are connected to each other, the positive pins of the third LED light-emitting chip and the sixth LED light-emitting chip of the LED display devices in the same column are connected to each other, the negative pins of the first LED light-emitting chip of the LED display devices in the same row are connected to each other, and the negative pins of the second LED light-emitting chip of the LED display devices in the same row are connected to each other.

[0080] In an optional implementation of the present embodiment, the LED display panel adopts a scanning drive mode, and firstly, under the condition of white balance, the brightness of a single pixel unit is calculated according to the brightness of the entire screen and the dot pitch of adjacent pixel units.

[0081] Specifically, the whole screen brightness information and the dot pitch information are obtained. Assuming the whole screen brightness is I and the dot pitch is x, the calculation formula for the brightness i of each pixel unit includes:

[0082]

[0083] Where I is the brightness of the entire screen, x is the dot spacing, and i is the brightness of each pixel unit.

[0084] In an optional implementation of this embodiment, according to the color mixing principle of the three primary colors R, G, and B of a full-color LED, when white light is emitted, the mixing ratio of R, G, and B is approximately 3:6:1, and the calculation formula includes:

[0085]

[0086] In the formula, i R is the brightness of the red primary color for each pixel unit, i G is the brightness of the green primary color of each pixel unit, i B The brightness of the blue primary color for each pixel cell.

[0087] In an optional implementation of the present embodiment, a relationship function between the light intensity and forward current of the LED light-emitting chip is obtained, and the brightness of the three primary colors of each pixel unit is substituted into the relationship function between the light intensity and forward current of the LED light-emitting chip respectively to obtain the driving signals of the three primary colors corresponding to each pixel unit.

[0088] Specifically, the relationship function between the light intensity and forward current of the LED light-emitting chip currently in use is obtained, and the brightness i of the three primary colors of the pixel unit is substituted into the function. R 、i G 、i B , respectively obtain the red primary color driving signal d(R), the green primary color driving signal d(G), and the blue primary color driving signal d(B) corresponding to each pixel unit.

[0089] In an optional implementation of this embodiment, since a single LED light-emitting chip is multiplexed by two pixel units at the same time, the actual driving signal of a single red, green, and blue primary color LED light-emitting chip is:

[0090] D R =2*d(R);

[0091] D G =2*d(G);

[0092] D B =2*d(B);

[0093] Where D R To provide the actual driving signal for the red primary LED chip, D G To provide the actual driving signal for the green primary LED chip, D B To provide the actual driving signal for the blue primary color LED light emitting chip.

[0094] It should be noted that, since each LED light-emitting chip can be reused by two pixel units, the number of LED light-emitting chips is half of the original on the basis of achieving the same pixel density.

[0095] In summary, the second embodiment of the utility model provides an LED display panel, including several LED display devices in the first embodiment, each LED light-emitting chip can be multiplexed by two virtual pixel units at the same time, and the number of LED light-emitting chips is reduced by half while achieving the same number of pixel units and pixel pitch. The design is simpler and the manufacturing difficulty is low, which effectively improves the pixel density, reduces the production cost, and improves the display accuracy.

[0096] The above is a detailed introduction to an LED display device and an LED display panel provided by an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. An LED display device, characterized in that: The LED display device comprises a substrate, and two groups of LED light-emitting chips are arranged on the front of the substrate, including a first group of LED light-emitting chips and a second group of LED light-emitting chips, and any group of LED light-emitting chips comprises a first LED light-emitting chip, a second LED light-emitting chip, and a third LED light-emitting chip, and the first LED light-emitting chip, the second LED light-emitting chip, and the third LED light-emitting chip of the same group of LED light-emitting chips are arranged in a triangle; The orientation of the triangle formed by the first group of LED light-emitting chips with the first LED light-emitting chip as the vertex is opposite to the orientation of the triangle formed by the second group of LED light-emitting chips with the first LED light-emitting chip as the vertex, and the first LED light-emitting chip of the first group of LED light-emitting chips and the first LED light-emitting chip of the second group of LED light-emitting chips are arranged diagonally on the substrate; The light emitting colors of the first LED light emitting chip, the second LED light emitting chip and the third LED light emitting chip are one of three primary colors of red, green and blue and are different from each other.

2. The LED display device according to claim 1, characterized in that: A plurality of pins are arranged on the back side of the substrate, and any one of the LED light-emitting chips comprises a first electrode and a second electrode, and the first electrode and the second electrode of the LED light-emitting chip are connected to the plurality of pins correspondingly.

3. The LED display device according to claim 2, characterized in that: The first electrode and the second electrode of the LED light-emitting chip are electrically connected to the plurality of pins via conductive holes penetrating the substrate.

4. The LED display device according to claim 2, characterized in that: The plurality of pins include a positive pin of a first LED light emitting chip, a positive pin of a second LED light emitting chip, a positive pin of a third LED light emitting chip, a positive pin of a fourth LED light emitting chip, a positive pin of a fifth LED light emitting chip, a positive pin of a sixth LED light emitting chip, a negative pin of a first LED light emitting chip, and a negative pin of a second LED light emitting chip; The positive pin of the first LED light-emitting chip is connected to the first electrode of the first LED light-emitting chip of the first group of LED light-emitting chips, the positive pin of the second LED light-emitting chip is connected to the first electrode of the second LED light-emitting chip of the first group of LED light-emitting chips, the positive pin of the third LED light-emitting chip is connected to the first electrode of the third LED light-emitting chip of the first group of LED light-emitting chips, the positive pin of the fourth LED light-emitting chip is connected to the first electrode of the first LED light-emitting chip of the second group of LED light-emitting chips, the positive pin of the fifth LED light-emitting chip is connected to the first electrode of the second LED light-emitting chip of the second group of LED light-emitting chips, the positive pin of the sixth LED light-emitting chip is connected to the first electrode of the third LED light-emitting chip of the second group of LED light-emitting chips, the negative pin of the first LED light-emitting chip is connected to the second electrodes of the three LED light-emitting chips of the first group of LED light-emitting chips, and the negative pin of the second LED light-emitting chip is connected to the second electrodes of the three LED light-emitting chips of the second group of LED light-emitting chips.

5. The LED display device according to claim 4, characterized in that: The anode pin of the second LED light emitting chip is connected to the anode pin of the fifth LED light emitting chip, and the anode pin of the third LED light emitting chip is connected to the anode pin of the sixth LED light emitting chip.

6. The LED display device according to claim 1, characterized in that: Positioning ink is also provided on the back side of the substrate.

7. The LED display device according to claim 1, characterized in that: The cross section of the LED display device is a square, and the side length a1 of the LED display device is 0.4 mm-3 mm.

8. The LED display device according to claim 3, characterized in that: The cross-sectional dimensions of any two pins are the same, and the side length a2 of any one of the pins is 0.1 mm-0.7 mm.

9. The LED display device according to claim 1, characterized in that: In the same group of LED light-emitting chips, the second LED light-emitting chip and the third LED light-emitting chip have the same coordinates in the horizontal direction, and the distance l1 between the first LED light-emitting chip and the second LED light-emitting chip in the horizontal direction is 0.3 mm-1.5 mm; A distance l2 between the first LED light-emitting chip of the first group of LED light-emitting chips and the first LED light-emitting chip of the second group of LED light-emitting chips in the vertical direction is 0.3 mm-1.5 mm.

10. An LED display panel, characterized in that: The LED display panel comprises a plurality of LED display devices according to any one of claims 1 to 9, and the plurality of LED display devices are arranged in an array of m rows and n columns, where m is a positive integer and n is a positive integer.

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