LED display device and manufacturing method for LED display device

Abstract

An LED display device and a manufacturing method for the LED display device. The LED display device comprises (2m-1)*(2n-1) adhesive units provided in a rectangular array, and the adhesive units comprise m*n pixel adhesive units (1) and (3mn-2m-2n+1) blank adhesive units (2), wherein m is a positive integer and n is a positive integer. A set of pixel units (3) is provided on each of the pixel adhesive units (1), and the pixel units (3) are located at the adhesive center of the corresponding pixel adhesive unit (1). An adhesive separation slot is formed between any two adjacent adhesive units.

Description

LED display device and manufacturing method thereof

[0001] This application claims priority to the Chinese patent application No. 202410847995.9, filed on June 27, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of Light-Emitting Diode (LED) display devices, for example, to an LED display device and a manufacturing method thereof. BACKGROUND

[0003] In a conventional multi-pixel integrated LED device, in order to prevent light cross between pixels, a packaging glue is generally used for packaging, and pixel segmentation grooves are formed between adjacent pixels to form glue separation grooves for blocking. As shown in FIG. 1, in a conventional 2*2 pixel integrated LED display device, horizontal and vertical knives are usually used for pixel segmentation grooves, but there is a problem of light cross between pixels in the multi-pixel integrated LED display device.

[0004] SUMMARY

[0005] The present application provides an LED display device and a manufacturing method thereof, which solves the problem of light cross between pixels in the multi-pixel integrated LED display device, effectively improves the light color consistency and black screen appearance consistency of the LED display device, and optimizes the display performance of the LED display device.

[0006] The present application provides an LED display device, which comprises (2m-1)*(2n-1) glue units, the glue units are arranged in a rectangular array, the glue units comprise m*n pixel glue units and (3mn-2m-2n+1) blank glue units, m is a positive integer, and n is a positive integer.

[0007] A group of pixel units are arranged on any one pixel glue unit, and the pixel units are located at the glue center of the corresponding pixel glue unit.

[0008] A glue separation groove is arranged between any two adjacent glue units.

[0009] In some embodiments, in the first odd row of glue units, the pixel glue units and the blank glue units are arranged alternately.

[0010] In some embodiments, in the first odd column of glue units, the pixel glue units and the blank glue units are arranged alternately.

[0011] In some embodiments, each of the even-numbered rows of the gel units is a blank gel unit.

[0012] In some embodiments, each of the even-numbered columns of the gel units is a blank gel unit.

[0013] In some embodiments, the depth of the gel separation groove is 0.05mm-0.4mm.

[0014] In some embodiments, the width of the gel separation groove is 0.08mm-0.4mm.

[0015] In some embodiments, the size of any two gel units is the same.

[0016] In some embodiments, any group of pixel units includes one red LED chip, one green LED chip, and one blue LED chip.

[0017] The present application also provides a manufacturing method of an LED display device, which is used to manufacture the above-mentioned LED display device, and the manufacturing method includes:

[0018] integrating the m*n pixel units in a matrix array on a substrate and packaging to form a multi-pixel integrated LED display device with m rows and n columns;

[0019] performing pixel segmentation slotting on the multi-pixel integrated LED display device to form (2m-1)*(2n-1) gel units, the gel units including m*n pixel gel units and (3mn-2m-2n+1) blank gel units, any one pixel gel unit being provided with a group of pixel units, the pixel units being located at the gel center of the corresponding pixel gel unit, any two adjacent gel units being provided with a gel separation groove, m being a positive integer, and n being a positive integer.

[0020] In some embodiments, the pixel segmentation slotting on the multi-pixel integrated LED display device includes:

[0021] measuring the point spacing of the multi-pixel integrated LED display device and obtaining the width of a cutting blade;

[0022] calculating the theoretical size of the gel units according to the point spacing and the width of the cutting blade;

[0023] selecting a cutting trace based on the theoretical size of the gel units;

[0024] performing pixel segmentation slotting based on the cutting trace.

[0025] In some embodiments, the pixel segmentation slotting based on the cutting trace includes:

[0026] Based on the width of the cutting blade and the cutting trace, horizontal pixel division slotting and vertical pixel division slotting are respectively performed on the multi-pixel integrated LED display device to form (m-1)*2 horizontal gelatinous separation slots and (n-1)*2 vertical gelatinous separation slots. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 is a schematic diagram of a 2*2 pixel integrated LED display device division slotting structure in an embodiment;

[0028] Fig. 2 is a schematic diagram of a 2*2 pixel integrated LED display device division slotting structure in an embodiment of the application;

[0029] Fig. 3 is a schematic diagram of a 2*2 pixel integrated LED display device division slotting cross-sectional structure in an embodiment of the application;

[0030] Fig. 4 is a flow chart of a manufacturing method of an LED display device in an embodiment of the application;

[0031] Fig. 5 is a flow chart of pixel division slotting on a 2*2 pixel integrated LED display device in an embodiment of the application;

[0032] Fig. 6 is a schematic diagram of a 2*2 pixel integrated LED display device division slotting structure in an embodiment of the application;

[0033] Fig. 7 is a schematic diagram of a 2*2 pixel integrated LED display device division slotting cross-sectional structure in an embodiment of the application. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described in detail below with reference to the drawings, and the described embodiments are part of the embodiments of the present application, but not necessarily all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0035] In the present application, it should be understood that terms such as "include" or "have" are intended to indicate that there is presence of features, numbers, steps, actions, components, parts or combinations thereof disclosed in the specification, and do not exclude the presence or addition of one or more other features, numbers, steps, actions, components, parts or combinations thereof.

[0036] It should also be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] The multi-pixel integrated LED display device usually adopts horizontal and vertical cutting to divide the pixels, but due to the inconsistent width of the cutting and the size of the patch spacing, the pixel center of the pixel unit is not at the center of the corresponding colloid unit, the light emitted by the same pixel unit has different paths in different directions through the colloid, resulting in inconsistent light emitting angles in different directions, and poor consistency of light emitting color and black screen appearance.

[0038] Embodiment one

[0039] The embodiment one of the present application provides an LED display device, the LED display device comprises (2m-1)*(2n-1) colloid units, the colloid units are arranged in a rectangular array, the colloid units comprise m*n pixel colloid units and (3mn-2m-2n+1) blank colloid units, m and n are both positive integers; a group of pixel units are arranged on any one pixel colloid unit, the pixel units are located at the colloid center of the corresponding pixel colloid unit; a colloid separation groove is arranged between any two adjacent colloid units.

[0040] In an optional implementation manner of the embodiment, m is the number of rows where the pixel units are located, and n is the number of columns where the pixel units are located, or m is the number of columns where the pixel units are located, and n is the number of rows where the pixel units are located. When m=2 and n=2, the LED display device comprises 3*3 colloid units, the colloid units are arranged in a rectangular array, and the colloid units comprise 2*2 pixel colloid units and 5 blank colloid units.

[0041] Optionally, as shown in FIG. 2, FIG. 2 shows a 2*2 pixel integrated LED display device division groove structure in the embodiment one of the present application, the colloid units comprise 4 pixel colloid units 1 and 5 blank colloid units 2.

[0042] In an optional implementation manner of the embodiment, as shown in FIG. 2, in the 3*3 colloid units of the LED display device, the 4 pixel colloid units 1 occupy positions (1, 1), (3, 1), (1, 3) and (3, 3) respectively, and the 5 blank colloid units 2 occupy positions (1, 2), (2, 1), (2, 2), (2, 3) and (3, 2) respectively.

[0043] In an optional implementation manner of the embodiment, in the odd-numbered row colloid units, the pixel colloid units 1 and the blank colloid units 2 are arranged alternately.

[0044] Optionally, in the first row colloid units of the LED display device in FIG. 2, the pixel colloid units 1 and the blank colloid units 2 are arranged alternately, wherein the pixel colloid units 1 occupy positions (1, 1) and (1, 3), and the blank colloid units 2 occupy position (1, 2).

[0045] In the third row of the LED display device in FIG. 2, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately, wherein the pixel colloidal units 1 occupy the (3, 1) and (3, 3) positions, and the blank colloidal units 2 occupy the (3, 2) position.

[0046] In an optional implementation of the embodiment, in the odd-numbered column of colloidal units, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately.

[0047] Optionally, in the first column of the LED display device in FIG. 2, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately, wherein the pixel colloidal units 1 occupy the (1, 1) and (3, 1) positions, and the blank colloidal units 2 occupy the (2, 1) position.

[0048] In the third column of the LED display device in FIG. 2, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately, wherein the pixel colloidal units 1 occupy the (1, 3) and (3, 3) positions, and the blank colloidal units 2 occupy the (2, 3) position.

[0049] In an optional implementation of the embodiment, the even-numbered rows of colloidal units are all blank colloidal units.

[0050] Optionally, in the second row of the LED display device in FIG. 2, the blank colloidal units 2 completely occupy the entire second row of colloidal units.

[0051] In an optional implementation of the embodiment, the even-numbered columns of colloidal units are all blank colloidal units.

[0052] Optionally, in the second column of the LED display device in FIG. 2, the blank colloidal units 2 completely occupy the entire second column of colloidal units.

[0053] In an optional implementation of the embodiment, any pixel colloidal unit is provided with a group of pixel units, and the pixel units are located at the colloidal center of the corresponding pixel colloidal unit.

[0054] Optionally, as shown in FIG. 2, any pixel colloidal unit 1 in FIG. 2 is provided with a group of pixel units 3, and the pixel units 3 are located at the colloidal center of the corresponding pixel colloidal unit 1.

[0055] Optionally, the pixel units 3 located at the colloidal center of the corresponding pixel colloidal unit 1 are pixel centers of the pixel units 3 located at the colloidal center of the corresponding pixel colloidal unit 1.

[0056] In an optional implementation of the embodiment, a colloid separation groove is arranged between any two adjacent colloid units in the same row.

[0057] Optionally, a vertical colloid separation groove is arranged between any two adjacent colloid units in the same row.

[0058] In the same column of colloid units, a horizontal colloid separation groove is arranged between any two adjacent colloid units.

[0059] Any vertical colloid separation groove and any horizontal colloid separation groove are perpendicular to each other.

[0060] In an optional implementation of the embodiment, the number of vertical colloid separation grooves A=(n-1)*2.

[0061] Optionally, in the embodiment, the number of vertical colloid separation grooves A=(2-1)*2=2.

[0062] In an optional implementation of the embodiment, the number of horizontal colloid separation grooves B=(m-1)*2.

[0063] Optionally, in the embodiment, the number of horizontal colloid separation grooves B=(2-1)*2=2.

[0064] In an optional implementation of the embodiment, the size of any two colloid units is the same. That is, the size of any two pixel colloid units is the same, the size of any two blank colloid units is the same, and the size of any pixel colloid unit and any blank colloid unit is the same.

[0065] In an optional implementation of the embodiment, the colloid separation groove width D is 0.08mm-0.4mm.

[0066] Optionally, the colloid separation groove width D can be one of 0.08mm, 0.2mm, 0.4mm, etc., which can be determined according to actual needs.

[0067] In an optional implementation of the embodiment, as shown in FIG. 2, the point spacing of the LED display device, that is, the spacing between the centers of any two adjacent pixels, is P, the width of any colloid separation groove is D, and the side length of any colloid unit is L, L=(P-2*D) / 2.

[0068] Optionally, as shown in FIG. 2, the LED display device in FIG. 2 is a 2*2 pixel integrated LED display device, the point spacing P=3mm, the colloid separation groove width D=0.2mm, and then the colloid unit side length L=(3-2*0.2) / 2=1.3mm.

[0069] In an optional implementation of the embodiment, the first side length of the LED display device is L', and the second side length is L'', L'=(2m-1)*L+(m-1)*2*D, and L''=(2n-1)*L+(n-1)*2*D.

[0070] Optionally, as shown in FIG. 2, the LED display device in FIG. 2 is a 2*2 pixel integrated LED display device, the first side length L'=(2*2-1)*1.3+(2-1)*2*0.2=4.3mm, and the second side length L''=(2*2-1)*1.3+(2-1)*2*0.2=4.3mm.

[0071] In an optional implementation of the embodiment, as shown in FIG. 3, FIG. 3 shows a 2*2 pixel integrated LED display device in the embodiment one of the present application.

[0072] In an optional implementation of the embodiment, the depth H of the gel separation groove is 0.05mm-0.4mm.

[0073] Optionally, the depth H of the gel separation groove can be one of 0.05mm, 0.1mm, 0.2mm, 0.4mm, etc., which can be determined according to actual requirements.

[0074] In an optional implementation of the embodiment, any one group of pixel units includes one red LED chip, one green LED chip and one blue LED chip.

[0075] In summary, the embodiment of the present application provides an LED display device, which is divided and grooved between adjacent pixel units to prevent light leakage, sets pixel gel units and blank gel units, and sets the pixel units at the gel center of the corresponding pixel gel units, so that the light emitted by the same pixel unit has the same path through the gel in different directions, effectively improves the light color consistency and black screen appearance consistency of the LED display device, and optimizes the display performance of the LED display device.

[0076] Embodiment two

[0077] The embodiment two of the present application provides a manufacturing method of an LED display device, which is used to manufacture the LED display device in the embodiment one, and includes the following steps: integrating m*n pixel units in a matrix array on a substrate and packaging to form a multi-pixel integrated LED display device with m rows and n columns; and performing pixel division and grooving on the multi-pixel integrated LED display device.

[0078] In an optional implementation of the embodiment, a 2*2 pixel integrated LED display device is used.

[0079] In an optional implementation of the embodiment, as shown in FIG. 4, FIG. 4 shows a flowchart of a manufacturing method of the 2*2 pixel integrated LED display device in the embodiment two of the present application, including the following steps.

[0080] S401, integrate m*n pixel units in a matrix array on a substrate, and perform packaging to form a multi-pixel integrated LED display device of m rows and n columns.

[0081] In an optional implementation of the embodiment, integrate m*n pixel units in a matrix array on a substrate, and perform packaging to form a multi-pixel integrated LED display device of m rows and n columns.

[0082] In an optional implementation of the embodiment, the LED display device is integrated with 2*2 pixel units.

[0083] In an optional implementation of the embodiment, any group of pixel units includes one red LED chip, one green LED chip, and one blue LED chip.

[0084] S402, perform pixel segmentation and slotting on the multi-pixel integrated LED display device.

[0085] In an optional implementation of the embodiment, as shown in FIG. 5, FIG. 5 shows a flowchart of performing pixel segmentation and slotting on the 2*2 pixel integrated LED display device in the embodiment two of the present application, including the following steps.

[0086] S501, measure the point spacing of the multi-pixel integrated LED display device, and obtain the width of the cutting blade.

[0087] In an optional implementation of the embodiment, measure the point spacing P of the multi-pixel integrated LED display device, and obtain the width of the cutting blade.

[0088] The width D of the gel separation groove formed after pixel segmentation and slotting based on the cutting blade is consistent with the width of the cutting blade.

[0089] In an optional implementation of the embodiment, as shown in FIG. 6, FIG. 6 shows a schematic diagram of the slotting structure of the 2*2 pixel integrated LED display device in the embodiment two of the present application. In FIG. 6, the point spacing of the 2*2 pixel integrated LED display device, i.e., the spacing P between any two adjacent pixel centers, is 3 mm, and the width D of any gel separation groove is 0.2 mm. In the 2*2 pixel integrated LED display device in the embodiment, the point spacing P is 3 mm, and the width D of the gel separation groove is 0.2 mm.

[0090] S502, calculating the theoretical size of the gel unit according to the point spacing and the width of the cutting blade.

[0091] In an optional implementation of the embodiment, the theoretical size L of the gel unit is calculated based on the point spacing P and the width of the cutting blade, i.e., based on the point spacing P and the gel separation groove width D.

[0092] The size of any two gel units is the same.

[0093] Optionally, the calculation formula of the theoretical size L of the gel unit is as follows: L=(P-2*D) / 2.

[0094] In the formula, L is the theoretical size of the gel unit, P is the point spacing, and D is the width of the gel separation groove.

[0095] Optionally, in the 2*2 pixel integrated LED display device in the embodiment, the point spacing P=3mm, the gel separation groove width D=0.2mm, and then the gel unit theoretical size L=(3-2*0.2) / 2=1.3mm.

[0096] S503, selecting a cutting trace based on the theoretical size of the gel unit.

[0097] In an optional implementation of the embodiment, the cutting trace is selected based on the theoretical size L of the gel unit.

[0098] Optionally, any one pixel unit is selected, a square with a side length of L is formed by extending the pixel center of the pixel unit upward, downward, leftward and rightward by L / 2 respectively, and the outline of the square with a side length of L is taken as the cutting trace. The above steps are repeated until all square outlines centered on each pixel unit are formed.

[0099] Optionally, as shown in FIG. 6, a square with a side length of L centered on each pixel center 3 is formed, the outline of the square is taken as the cutting trace, and all square outlines are connected to form the cutting trace.

[0100] S504, performing pixel segmentation and slotting based on the cutting trace.

[0101] In an optional implementation of the embodiment, the pixel segmentation and slotting are performed based on the cutting trace using a cutting blade to form a plurality of gel separation grooves.

[0102] Optionally, horizontal pixel segmentation and slotting and vertical pixel segmentation and slotting are performed on the multi-pixel integrated LED display device based on the width of the cutting blade and the cutting trace to form (m-1)*2 horizontal gel separation grooves and (n-1)*2 vertical gel separation grooves.

[0103] Any of the vertical colloidal separation grooves and any of the horizontal colloidal separation grooves are perpendicular to each other.

[0104] In one optional implementation of the embodiment, as shown in FIG. 6, after one horizontal pixel segmentation groove is formed, one horizontal colloidal separation groove is formed, and after one vertical pixel segmentation groove is formed, one vertical colloidal separation groove is formed. In the 2*2 pixel integrated LED display device in the embodiment, (2-1)*2=4 horizontal pixel segmentation grooves and (2-1)*2=4 vertical pixel segmentation grooves are formed, and (2-1)*2=4 horizontal colloidal separation grooves and (2-1)*2=4 vertical colloidal separation grooves are formed.

[0105] In one optional implementation of the embodiment, after horizontal pixel segmentation grooves and vertical segmentation grooves are formed, (2m-1)*(2n-1) colloidal units are formed, the colloidal units include m*n pixel colloidal units and (3mn-2m-2n+1) blank colloidal units, any one pixel colloidal unit is provided with a group of pixel units, the pixel units are located at the colloidal center of the corresponding pixel colloidal unit, and colloidal separation grooves are provided between any two adjacent colloidal units, m is a positive integer, and n is a positive integer.

[0106] Optionally, in the 2*2 pixel integrated LED display device in the embodiment, as shown in FIG. 6, after pixel segmentation grooves are formed on the multi-pixel integrated LED display device, (2*2-1)*(2*2-1)=9 colloidal units are formed, including 2*2=4 pixel colloidal units 1 and (3*2*2-2*2-2*2+1)=5 blank colloidal units 2, the 4 pixel colloidal units 1 occupy positions (1, 1), (3, 1), (1, 3), and (3, 3) respectively, and the 5 blank colloidal units 2 occupy positions (1, 2), (2, 1), (2, 2), (2, 3), and (3, 2) respectively.

[0107] In one optional implementation of the embodiment, in the odd-numbered row colloidal units, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately.

[0108] Optionally, in the first row colloidal units of the LED display device in FIG. 6, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately, the pixel colloidal units 1 occupy positions (1, 1) and (1, 3), and the blank colloidal units 2 occupy position (1, 2).

[0109] Optionally, in the third row colloidal units of the LED display device in FIG. 6, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately, the pixel colloidal units 1 occupy positions (3, 1) and (3, 3), and the blank colloidal units 2 occupy position (3, 2).

[0110] In an optional implementation of the embodiment, in the odd-numbered column colloidal units, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately.

[0111] Optionally, in the first column colloidal units of the LED display device in FIG. 6, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately, wherein the pixel colloidal units 1 occupy the (1, 1) and (3, 1) positions, and the blank colloidal units 2 occupy the (2, 1) position.

[0112] Optionally, in the third column colloidal units of the LED display device in FIG. 6, the pixel colloidal units 1 and the blank colloidal units 2 are arranged alternately, wherein the pixel colloidal units 1 occupy the (1, 3) and (3, 3) positions, and the blank colloidal units 2 occupy the (2, 3) position.

[0113] In an optional implementation of the embodiment, all the even-numbered row colloidal units are blank colloidal units.

[0114] Optionally, in the second row colloidal units of the LED display device in FIG. 6, the blank colloidal units 2 completely occupy the entire second row colloidal units.

[0115] In an optional implementation of the embodiment, all the even-numbered column colloidal units are blank colloidal units.

[0116] Optionally, in the second column colloidal units of the LED display device in FIG. 6, the blank colloidal units 2 completely occupy the entire second column colloidal units.

[0117] In an optional implementation of the embodiment, each pixel colloidal unit is provided with a group of pixel units, and the pixel units are located at the colloidal center of the corresponding pixel colloidal unit.

[0118] Optionally, as shown in FIG. 6, each pixel colloidal unit 1 in FIG. 5 is provided with a group of pixel units 3, and the pixel units 3 are located at the colloidal center of the corresponding pixel colloidal unit 1.

[0119] Optionally, the pixel units 3 located at the colloidal center of the corresponding pixel colloidal unit 1 are pixel centers of the pixel units 3 located at the colloidal center of the corresponding pixel colloidal unit 1.

[0120] In an optional implementation of the embodiment, the width D of the colloidal separation groove is 0.08 mm-0.4 mm.

[0121] Optionally, the width D of the colloidal separation groove can be one of 0.08 mm, 0.2 mm, 0.4 mm, etc., which is determined according to actual requirements.

[0122] In an optional implementation of the embodiment, after the pixel is divided by the groove, the LED display device is formed, the first side length is L', the second side length is L", L'=(2m-1)*L+(m-1)*2*D, and L"=(2n-1)*L+(n-1)*2*D.

[0123] Optionally, in the embodiment, as shown in FIG. 6, the LED display device in FIG. 6 is a 2*2 pixel integrated LED display device, the first side length L'=(2*2-1)*1.3+(2-1)*2*0.2=4.3mm, and the second side length L"=(2*2-1)*1.3+(2-1)*2*0.2=4.3mm.

[0124] In an optional implementation of the embodiment, as shown in FIG. 7, FIG. 7 shows a groove profile structure diagram of the 2*2 pixel integrated LED display device in the embodiment.

[0125] In an optional implementation of the embodiment, the depth H of the gelatinous separation groove is 0.05mm-0.4mm.

[0126] Optionally, the depth H of the gelatinous separation groove can be one of 0.05mm, 0.1mm, 0.2mm, 0.4mm, etc., which is determined according to actual requirements.

[0127] The embodiment two provides a manufacturing method of an LED display device, which is used for manufacturing the LED display device in the embodiment one. The method divides and grooves between adjacent pixel units to prevent the light leakage phenomenon, sets pixel gelatinous units and blank gelatinous units, and sets the pixel units at the gelatinous centers of the corresponding pixel gelatinous units, so that the light emitted by the same pixel unit has the same path length in different directions. The method effectively improves the light color consistency and the black screen appearance consistency of the LED display device, and optimizes the display performance of the LED display device.

[0128] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiments can be completed by a program instructing related hardware, and the program can be stored in a computer readable storage medium, which can include a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

Claims

1. A light emitting diode (LED) display device, comprising (2m-1)*(2n-1) colloidal units, the colloidal units being arranged in a rectangular array, the colloidal units comprising m*n pixel colloidal units and (3mn-2m-2n+1) blank colloidal units, m being a positive integer, n being a positive integer. Any one pixel colloidal unit is provided with a group of pixel units, the pixel units being located at the center of the corresponding pixel colloidal unit. Any two adjacent colloidal units are provided with a colloidal separation groove.

2. The LED display device of claim 1, wherein, m is the number of rows of pixel units, n is the number of columns of pixel units.

3. The LED display device of claim 2, wherein, In the first odd row colloidal units, the pixel colloidal units and the blank colloidal units are arranged alternately.

4. The LED display device of claim 2, wherein, In the first odd column colloidal units, the pixel colloidal units and the blank colloidal units are arranged alternately.

5. The LED display device of claim 2, wherein, The second even row colloidal units are all blank colloidal units.

6. The LED display device of claim 2, wherein, The second even column colloidal units are all blank colloidal units.

7. The LED display device of any of claims 1-6, wherein, The depth of the colloidal separation groove is 0.05mm-0.4mm.

8. The LED display device of any of claims 1-7, wherein, The width of the colloidal separation groove is 0.08mm-0.4mm.

9. The LED display device of claim 1, wherein, The size of any two colloidal units is the same.

10. The LED display device of claim 1, wherein, Any one group of pixel units comprises a red LED chip, a green LED chip and a blue LED chip.

11. A manufacturing method of an LED display device, for manufacturing the LED display device of any one of claims 1-10, the manufacturing method comprising: integrating m*n pixel units on a substrate in a matrix array and packaging to form a multi-pixel integrated LED display device with m rows and n columns; performing pixel segmentation slotting on the multi-pixel integrated LED display device to form (2m-1)*(2n-1) colloidal units, the colloidal units comprising m*n pixel colloidal units and (3mn-2m-2n+1) blank colloidal units, any one pixel colloidal unit being provided with a group of pixel units, the pixel units being located at the center of the corresponding pixel colloidal unit, any two adjacent colloidal units being provided with a colloidal separation groove, m being a positive integer, n being a positive integer. The pixel segmentation slotting on the multi-pixel integrated LED display device comprises:

12. The method of fabricating an LED display device according to claim 11, wherein, measuring the point spacing of the multi-pixel integrated LED display device and obtaining the width of a cutting blade; calculating the theoretical size of the colloidal units according to the point spacing and the width of the cutting blade; selecting a cutting trace based on the theoretical size of the colloidal units; performing pixel segmentation slotting based on the cutting trace. The pixel segmentation slotting based on the cutting trace comprises:

13. The method of producing an LED display device according to claim 12, wherein performing horizontal pixel segmentation slotting and vertical pixel segmentation slotting on the multi-pixel integrated LED display device based on the width of the cutting blade and the cutting trace respectively to form (m-1)*2 horizontal colloidal separation grooves and (n-1)*2 vertical colloidal separation grooves. ​

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