Method for mixing LED die

Abstract

To make uniform the overall color of one LED printed circuit board, and the like.SOLUTION: A method for mixing an LED die includes: generating a matrix having the i-th row and the j-th column, wherein the matrix includes i×j elements, each element in the matrix is a square matrix having n rows and n columns, and i≥2, j≥2, n≥3 and i, j, n are all positive integers; using a magic square to mark the n2 coordinates of each square matrix respectively with numbers 1, 2, ..., n2, so that the total sum of numbers marked on the n coordinates of each column, each row, and two diagonal lines in each square matrix becomes equal to the formula; dividing the plurality of LED dies into n2 wavelength ranges according to wavelengths, wherein each of the wavelength ranges includes i×j LED dies; and placing the i×j LED dies in the same wavelength range respectively on the coordinates marked with the same number in these square matrices.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for mixing LED dies. [Background technology]

[0002] A light-emitting diode display (LED display) is a display that uses light-emitting diodes and includes multiple LED light boxes. Each LED light box contains multiple LED printed circuit boards. Each LED printed circuit board consists of multiple LED dies that are individually packaged.

[0003] The traditional LED die mixing method is well known to be random combination by vibration or random selection of different types of LED dies (red light, blue light, green light), so that the average wavelengths of multiple LED PCBs are consistent, that is, the color between multiple LED PCBs is uniform. Summary of the Invention [Problem to be solved by the invention]

[0004] However, due to the problem that the average wavelength does not match in small areas inside a single LED printed circuit board, the overall color of the single LED printed circuit board is not uniform.

[0005] Furthermore, these LED dies are susceptible to damage from collisions caused by the vibrations that occur during mixing. [Means for solving the problem]

[0006] The main objective of the present invention is to provide a method for mixing LED dies, which can use a magic square to arrange the positions of different types of LED dies (red light, blue light, green light) according to the wavelength bands.

[0007] To achieve the above objective, the present invention provides an LED die mixing method, which includes the following steps:

[0008] (a) A matrix having i rows and j columns is generated, the matrix containing i×j elements, each element in the matrix being a square matrix having n rows and n columns, where i≧2, j≧2, n≧3, and i, j, and n are all positive integers.

[0009] (b) Using a magic square, the sum of the numbers marked on the n coordinates of each column, each row, and each diagonal in each of the square matrices is n of each square matrix is ​​equal to TIFF2025027548000002.tif20170 2 The coordinates are assigned the numbers 1, 2, ..., n 2 Mark with .

[0010] (c) Multiple LED dies are arranged according to wavelength 2 Each wavelength band contains i×j LED dies.

[0011] Further, (d) place the i×j LED dies in the same wavelength band at coordinates marked with the same numbers in these square matrices, respectively.

[0012] Preferably, the magic square is an odd-order magic square.

[0013] Preferably, n=3.

[0014] Preferably, the magic square is an even-order magic square.

[0015] Preferably, in step (b), the sum of the numbers marked on consecutive n coordinates on either diagonal of two adjacent square matrices is TIFF2025027548000003.tif20170.

[0016] Preferably, in step (b), the sum of the numbers marked on the coordinates in any 2×2 square matrix in each square matrix is ​​2(n 2+1), and the spacing on any diagonal in each of the square matrices is TIFF2025027548000004.tif15170 The sum of the numbers marked on the two coordinates, which are the coordinate units, is n 2 +1 and the side length of the matrix is ​​a multiple of 4 coordinate units.

[0017] Preferably, in step (b), the sum of the numbers marked on consecutive n coordinates on either diagonal of two adjacent square matrices is TIFF2025027548000005.tif20170, and the sum of the numbers marked at the coordinates in any 2 × 2 square matrix in each of the square matrices is 2(n 2 +1) and the two intervals on either diagonal in each of the square matrices are The sum of the numbers marked at the coordinates in TIFF2025027548000006.tif15170 is n 2 +1 and the side length of the matrix is ​​a multiple of 4.

[0018] Preferably, n=4.

[0019] Preferably, step (b) further comprises the steps of: all of the numbers marked on the coordinates of corresponding positions in each square matrix being the same.

[0020] Preferably, step (d) further comprises: randomly placing the i×j LED dies in the same wavelength band at coordinates marked with the same number in these square matrices. Effect of the Invention

[0021] The advantages of the present invention are that the LED die mixing method of the present invention uses a magic square to correspond to the wavelength bands and arranges the positions of different types of LED dies 20 (red light, blue light, green light), so that the following advantages can be achieved:

[0022] First, the average wavelengths of the multiple LED printed circuit boards match, resulting in uniform color between the multiple LED printed circuit boards; second, the average wavelengths of small internal areas of a single LED printed circuit board match, resulting in uniform overall color for the single LED printed circuit board; and third, the LED dies 20 will not be damaged by collision due to mixing caused by vibration. [Brief description of the drawings]

[0023] [Figure 1] 1 is a flow chart of a method according to the present invention. [Diagram 2] 2 is a schematic diagram of steps S10 and S20 of a first embodiment of the method according to the present invention. FIG. [Diagram 3] FIG. 2 is a schematic diagram of step S30 of a first embodiment of the method according to the present invention. [Figure 4] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. [Diagram 5] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. [Figure 6] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. [Figure 7] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. [Figure 8] FIG. 2 is a schematic diagram of steps S10 and S20 of a second embodiment of the method according to the present invention. [Figure 9] FIG. 4 is a schematic diagram of step S30 of a second embodiment of the method according to the present invention. [Figure 10] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. [Figure 11] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. [Figure 12] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. [Figure 13] FIG. 2 is a schematic diagram of step S40 of a first embodiment of the method according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the embodiments of the present invention will be described in more detail with reference to the accompanying drawings and reference numerals, so that those skilled in the art can practice the present invention after reading the specification.

[0025] Fig. 1 is a flow chart of the method according to the present invention. Fig. 2 is a schematic diagram of steps S10 and S20 of a first embodiment of the method according to the present invention. Fig. 3 is a schematic diagram of step S30 of a first embodiment of the method according to the present invention. Figs. 4 to 7 are schematic diagrams of step S40 of a first embodiment of the method according to the present invention. The present invention provides a die mixing method including the steps described below.

[0026] In step S10, a matrix 10 having i rows and j columns is generated as shown in Figures 1 and 2. Matrix 10 includes i x j elements, and each element in matrix 10 has a square matrix 11 with n rows and n columns, where i >= 2, j >= 2, n >= 3, and i, j, and n are all positive integers.

[0027] In step S20, as shown in FIG. 1 and FIG. 2, a magic square is used to calculate the sum of the numbers marked on the n coordinates 111 of each column, each row, and each diagonal line in each square matrix 11. n in each square matrix 11 is equal to TIFF2025027548000007.tif20170 2 The coordinates 111 are assigned the numbers 1, 2, ..., n 2 Mark with .

[0028] In step S30, as shown in FIG. 1 and FIG. 3, a plurality of LED dies 20 are arranged in n groups according to wavelength. 2 Each wavelength band 30 includes i×j LED dies.

[0029] In step S40, as shown in FIGS. 1 and 4 to 7, i×j LED dies 20 in the same wavelength band 30 are placed at coordinates 111 marked with the same numbers in these square matrices 11, respectively.

[0030] Specifically, in the first embodiment, in step S10, a matrix 10 having 4 rows and 3 columns is generated, as shown in Fig. 2. The matrix 10 includes 12 elements, and each element in the matrix 10 is a square matrix 11 having 3 rows and 3 columns, where i=4 and j=3, and the magic square is an odd-order magic square, i.e., n=3.

[0031] In step S20, as shown in FIG. 2, a magic square is used to mark the numbers 1, 2, ..., n at the nine coordinates 111 in each square matrix 11 so that the sum of the numbers marked at the three coordinates 111 of each column, each row, and the two diagonals in each square matrix 11 is equal to 15. 2 Mark with .

[0032] In step S30, as shown in Fig. 3, the multiple LED dies 20 are divided into nine wavebands 30 (only four are shown in the drawing) according to wavelength, and each waveband 30 includes 12 LED dies 20. In step S40, as shown in Figs. 4 to 7, the 12 LED dies 20 in the same waveband 30 are placed at coordinates 111 marked with the same number in these square matrices 11.

[0033] Furthermore, in the first embodiment, Figures 4 and 5 show that 12 dies 20 (English symbols are A to L) are respectively placed at coordinates 111 marked with the number 1 in these square matrices 11, Figure 6 shows that 12 dies 20 (English symbols are A to L) are respectively placed at coordinates 111 marked with the number 2 in these square matrices 11, and Figure 7 shows that 12 dies 20 (English symbols are A to L) are respectively placed at coordinates 111 marked with the number 9 in these square matrices 11, and so on.

[0034] Preferably, step S20 further includes making the numbers marked at the coordinates 111 of corresponding positions in each square matrix 11 the same, as shown in Fig. 2. For example, in each square matrix 11, the numbers marked at the coordinates 111 from left to right in the first column are all 2, 7, 6, the numbers marked at the coordinates 111 from left to right in the second column are all 9, 5, 1, and the numbers marked at the coordinates 111 from left to right in the third column are all 4, 3, 8, by analogy.

[0035] Preferably, step S40 further includes randomly placing 12 LED dies 20 in the same wavelength band 30 at coordinates 111 marked with the same number in these square matrices 11, respectively, as shown in Figures 4 and 5. For example, 12 LED dies 20 (English symbols are A to L) in the same wavelength band 30 are randomly placed at coordinates 111 marked with the number 1 in these square matrices 11.

[0036] Fig. 8 is a schematic diagram of steps S10 and S20 of a second embodiment of the method according to the present invention. Fig. 9 is a schematic diagram of step S30 of a second embodiment of the method according to the present invention. Figs. 10 to 13 are schematic diagrams of step S40 of a first embodiment of the method according to the present invention. The differences between the second embodiment and the first embodiment are as follows.

[0037] Specifically, step S10 further includes that the magic square is an even-numbered magic square; step S20 further includes determining whether the sum of the numbers marked on the n consecutive coordinates 111 on the diagonal 121 of either of the two adjacent square matrices 11A is equal to or larger than .... TIFF2025027548000008.tif20170, and the sum of the numbers marked at the coordinates 111 in any 2×2 square matrix 112 in each square matrix 11A is 2(n 2 +1), and the intervals in any diagonal 122 in each square matrix 11A are TIFF2025027548000009.tif15170 The sum of the numbers marked on the two coordinates, which are the coordinate units, is n 2+1, and the side lengths L and W of matrix 10A are coordinate units that are multiples of 4.

[0038] In the second embodiment, in step S10, a matrix 10A having 4 rows and 3 columns is generated, as shown in Fig. 8. The matrix 10A includes 12 elements, and each element in the matrix 10A is a square matrix 11A having 4 rows and 4 columns, where i=4 and j=3, and the magic square is an even-order magic square, i.e., n=4.

[0039] In step S20, as shown in FIG. 8, using a magic square, the twelve coordinates 111 of each square matrix 11A are marked with the numbers 1, 2, ..., 16 so that the sums of the numbers marked on the four coordinates 111 in each column, each row, and each of the two diagonals of each square matrix 11A are equal to 34.

[0040] In addition, the sum of numbers marked on four consecutive coordinates 111 on any diagonal 121 of two adjacent square matrices 11A is equal to 34, the sum of numbers marked on coordinates 111 in any 2 x 2 square matrix 112 in each square matrix 11A is equal to 34, the sum of numbers marked on two coordinates 111 spaced apart by two coordinate units on any diagonal 122 in each square matrix 11A is equal to 17, and the length L of the long side of matrix 10A is 16 coordinate units and the length W of the short side of matrix 10A is 12 coordinate units.

[0041] In step S30, as shown in FIG. 9, the multiple LED dies 20 are divided into 16 wavelength bands 30 (only four are shown in the figure) according to wavelength, and each wavelength band 30 includes 12 LED dies 20; in step S40, as shown in FIGS. 10 to 13, the 12 LED 20 dies in the same wavelength band 30 are placed at coordinates 111 marked with the same numbers in these square matrices 11A.

[0042] Furthermore, in the second embodiment, Figures 10 and 11 show that 12 dies 20 (English symbols are A to L) are respectively placed at the coordinates 111 marked with the number 1 in these square matrices 11A, Figure 12 shows that 12 dies 20 (English symbols are A to L) are respectively placed at the coordinates 111 marked with the number 2 in these square matrices 11A, and Figure 13 shows that 12 dies 20 (English symbols are A to L) are respectively placed at the coordinates 111 marked with the number 16 in these square matrices 11A, and so on.

[0043] Preferably, step S20 further includes that the numbers marked at the coordinates 111 of the corresponding positions in each square matrix 11A are the same, as shown in Fig. 8. For example, in each square matrix 11A, the numbers marked at the coordinates 111 from left to right in the first column are all 1, 15, 10, 8, the numbers marked at the coordinates 111 from left to right in the second column are all 12, 6, 3, 13, the numbers marked at the coordinates 111 from left to right in the third column are all 7, 9, 16, 2, and the numbers marked at the coordinates 111 from left to right in the fourth column are all 14, 4, 5, 11, and so on.

[0044] Preferably, step S40 further includes randomly placing 12 LED dies 20 in the same wavelength band 30 at coordinates 111 marked with the same number in these square matrices 11A, respectively, as shown in Figures 10 and 11. For example, 12 LED dies 20 (English symbols A to L) in the same wavelength band 30 are randomly placed at coordinates 111 marked with the number 1 in these square matrices 11A.

[0045] It is noteworthy that each square matrix 11 is an LED printed circuit board, the matrix 10 is an LED light box, and the light boxes are an LED display screen.

[0046] As described above, the LED die mixing method of the present invention can use the magic square to correspond to the wavelength bands and arrange the positions of different types of LED dies 20 (red light, blue light, green light), so that the following effects can be achieved: first, the average wavelengths of multiple LED printed boards are consistent, so that the colors of multiple LED printed boards are uniform; second, the average wavelengths of small areas inside one LED printed board are consistent, so that the overall color of one LED printed board is uniform; third, the LED dies 20 will not be damaged by collision due to mixing caused by vibration.

[0047] The above-mentioned are only preferred embodiments for explaining the present invention, and are not intended to impose any formal limitations on the present invention. Any modifications or changes made to the present invention under the same inventive concept should be included in the intended scope of protection of the present invention. [Explanation of symbols]

[0048] 10, 10A matrix 11, 11A square matrix 111 Coordinates 112 Inner square matrix 121, 122 diagonal 20 Die 30 Wavelength Bands L, W side length S10~S40 process

Claims

1. 1. A method for mixing LED dies, comprising: (a) generating a matrix having i rows and j columns, the matrix including i×j elements, each element of the matrix being a plurality of square matrices having n rows and n columns, where i≧2, j≧2, n≧3, and i, j, and n are all positive integers; (b) Using a magic square, the sum of the numbers marked on the n coordinates of each column, each row, and each diagonal in each of the square matrices is n of each square matrix is ​​equal to 2 The coordinates are assigned the numbers 1, 2, ..., n. 2 Mark with (c) Multiple LED dies are arranged according to wavelength, n 2 each wavelength band includes i×j LED dies; and (d) placing the i×j LED dies in the same wavelength band at coordinates marked with the same numbers in the square matrices; LED die mixing methods.

2. The magic square is an odd-order magic square. The die mixing method of claim 1.

3. n=3; The method of claim 2 .

4. The magic square is an even-order magic square. The method of claim 1 .

5. In step (b), the sum of the numbers marked on the diagonals of consecutive n coordinates of either of two adjacent square matrices is and The die mixing method according to claim 4.

6. In step (b), the sum of the numbers marked on the coordinates in any one of the 2×2 square matrices in each of the square matrices is 2(n 2 +1), and the spacing on any diagonal in each of the square matrices is The sum of the numbers marked on the two coordinates is n 2 +1 and the side length of the matrix is ​​a multiple of 4 coordinate units. The die mixing method according to claim 4.

7. In step (b), the sum of the numbers marked on the diagonals of consecutive n coordinates of either of two adjacent square matrices is The sum of the numbers marked on the coordinates in any 2×2 square matrix in each of the square matrices is equal to 2(n 2 +1), and the two intervals on either diagonal in each of the square matrices are The sum of the numbers marked on the coordinates is n 2 +1 and the side length of the matrix is ​​a multiple of 4. The die mixing method according to claim 4.

8. n=4; A method for mixing a die according to any one of claims 4 to 7.

9. Step (b) further includes: all the numbers marked on the coordinates of corresponding positions in each of the square matrices are the same; The method of claim 1 .

10. Step (d) further includes randomly placing i×j LED dies in the same wavelength band at coordinates marked with the same numbers in the plurality of square matrices; The die mixing method of claim 1.

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