TWI700846B - Display device and manufacturing method for the same - Google Patents

Abstract

A display device and a manufacturing method for the same. The display device includes a first display unit and a second display unit. The first display unit includes a first circuit board, first display pixels and a first opaque glue. The first display pixels are electrically connected on the first circuit board. The first opaque glue includes a first outer edge glue portion and a first space glue portion. The first space glue portion is on a gap between the first display pixels. The first outer edge glue portion is disposed outside the first display pixels. The second display unit includes a second circuit board, second display pixels and a second opaque glue. The second display pixels are electrically connected on the second circuit board. The second opaque glue includes a second outer edge glue portion. The second outer edge glue portion is disposed outside the second display pixels. The first display unit and the second display unit are stitched together. The first outer edge glue portion and the second outer edge glue portion face to each other. The first space glue portion, the first outer edge glue portion and the second outer edge glue portion have the same height.

Description

Display and manufacturing method thereof

The present disclosure relates to a display and a manufacturing method thereof, and in particular to a display having a splicing seam and a manufacturing method thereof.

The current light emitting diode (LED) display is mainly modularized and then assembled into a large display through splicing, and the splicing seam is not obvious when viewing from a distance. As the viewing distance gets closer, the seams will become more obvious. Especially when the resolution of LED displays is increased, the pitch of each pixel becomes smaller, and the splicing seams in high-resolution displays will be more obvious.

This disclosure relates to a display and a manufacturing method thereof, which can improve the display effect.

An embodiment of the present disclosure provides a display including a first display device and a second display device. The first display device includes a first circuit substrate, a plurality of first display pixels, and a first opaque colloid. The first display pixel is electrically connected to the first circuit substrate. The first opaque glue includes a first outer edge glue part and a first spacer glue part. The first spacer glue position is on the first display The gap between pixels. The first outer edge glue part is outside the first display pixel. The second display device includes a second circuit substrate, a plurality of second display pixels, and a second opaque colloid. The second display pixel is electrically connected to the second circuit substrate. The second opaque glue includes a second outer edge glue part. The second outer edge glue part is outside the second display pixel. The first display device and the second display device are spliced together. The first outer edge glue part and the second outer edge glue part face each other. The first spacer glue part, the first outer edge glue part and the second outer edge glue part have the same height.

Another embodiment of the disclosure provides a display including a first display device and a second display device. The first display device includes a first circuit substrate, a plurality of first display pixels, and a first opaque colloid. The first display pixel is electrically connected to the first circuit substrate. The first opaque glue includes a first outer edge glue part and a first spacer glue part. The gap between the first spacer glue part and the first display pixel. The first outer edge glue part is outside the first display pixel. The second display device includes a second circuit substrate, a plurality of second display pixels, and a second opaque colloid. The second display pixel is electrically connected to the second circuit substrate. The second opaque glue includes a second outer edge glue part. The second outer edge glue part is outside the second display pixel. The first display device and the second display device are spliced together. The first outer edge glue part and the second outer edge glue part face each other. There is a splicing seam between the first circuit substrate and the second circuit substrate, and there is no glue at the splicing seam.

Yet another embodiment of the present disclosure provides a method for manufacturing a display, which includes the following steps. A first display device is provided. First display The device includes a first circuit substrate, a plurality of first display pixels, and a first opaque colloid. The first display pixel is on the first circuit substrate. The first opaque glue is on the first circuit substrate and includes a first outer edge glue part and a first spacer glue part. The gap between the first spacer glue part and the first display pixel. The first outer edge glue part is outside the first display pixel. Provide a second display device. The second display device includes a second circuit substrate, a plurality of second display pixels, and a second opaque colloid. The second display pixel is on the second circuit substrate. The second opaque glue includes a second outer edge glue part. The second outer edge glue part is outside the second display pixel. The first display device and the second display device are spliced together. The first outer edge glue part and the second outer edge glue part face each other, and the first circuit substrate and the second circuit substrate face each other.

In order to have a better understanding of the above and other aspects of the present disclosure, the following embodiments are specially cited, and the accompanying drawings are described in detail as follows:

100: The first display device

102: The first circuit board

104R, 104G, 104B, 204R, 204G, 204B: light-emitting unit

106: Mask

108: The first opaque colloid

110 ₁₁ ~110 ₄₄ : the first display pixel

104R, 104G, 104B: light-emitting unit

112L, 112R, 112U, 112D: the first outer edge glue part

114 ₁₁ ~114 ₄₄ : The first spacer rubber part

D1: First direction

D2: second direction

D3: Third party

200: second display device

202: second circuit board

208 second opaque colloid

210 ₁₁ , 210 ₁₂ , 210 ₁₃ , 210 ₁₄ : second display pixel

212L, 212R, 212U, 212D: second outer edge glue part

214 ₁₁ , 214 ₁₂ , 214 ₁₃ : second spacer glue part

316: base plate

311: stitching

318, 418: protective layer

Figures 1 to 6 illustrate a method of manufacturing a display according to an embodiment.

FIG. 7 is a cross-sectional view of a display according to another embodiment.

Figures 1 to 6 illustrate a method of manufacturing a display according to an embodiment.

Referring to FIG. 1, light-emitting units, such as light-emitting unit 104R, light-emitting unit 104G, and light-emitting unit 104B, are disposed on the first circuit substrate 102. The light emitting unit may include a light emitting diode. In one embodiment, the light-emitting unit 104R is a red light-emitting diode, the light-emitting unit 104G is a green light-emitting diode, and the light-emitting unit 104B is a blue light-emitting diode. In one embodiment, the light emitting unit can be a micro light emitting diode (Micro LED) arranged on the first circuit substrate 102 in a mass transfer manner. The diagonal length of the miniature light-emitting diode can be in the range of 1 micrometer to 100 micrometers. For example, the light-emitting unit 104R, the light-emitting unit 104G, and the light-emitting unit 104B can be electrically connected to the first circuit substrate 102 by a printing method. It should be noted that the first circuit substrate 102 in the present invention is not limited to any material, for example, it can be a glass circuit substrate, a plastic circuit substrate, or the like.

Referring to FIG. 2, a mask 106 can be formed on the light-emitting unit 104R, the light-emitting unit 104G, and the light-emitting unit 104B.

Please refer to FIG. 3, the first opaque colloid 108 may be arranged on the portion of the first circuit substrate 102 that is not covered by the mask 106. The first opaque colloid 108 can be formed by spraying a curable colloid material and then performing a curing step. It can also be formed by other suitable methods, such as a coating method or an injection method. In an embodiment, the first opaque colloid 108 may include black colloid or gray colloid, for example. The material of the first opaque colloid 108 may include, for example, silicone resin, such as silicone, or packaging material, such as epoxy resin, or other suitable materials.

Please refer to FIG. 4 to remove the mask 106 to form the first display device 100.

FIG. 4A shows a top view of the first display device 100 according to an embodiment. Figure 4 may be a cross-sectional view drawn along the section line AB in Figure 4A. Referring to FIGS. 4 and 4A, the first display device 100 includes first display pixels, such as first display pixels 110 ₁₁ , first display pixels 110 ₁₂ , first display pixels 110 ₁₃ , first display pixels 110 ₁₄ , First display pixel 110 ₂₁ , first display pixel 110 ₂₂ , first display pixel 110 ₂₃ , first display pixel 110 ₂₄ , first display pixel 110 ₃₁ , first display pixel 110 ₃₂ , first display pixel 110 ₃₃ , first display pixel 110 A display pixel 110 ₃₄ , a first display pixel 110 ₄₁ , a first display pixel 110 ₄₂ , a first display pixel 110 ₄₃ , and a first display pixel 110 ₄₄ . Each of the first display pixels may include a light-emitting unit 104R, a light-emitting unit 104G, and a light-emitting unit 104B.

The first opaque colloid 108 can surround and frame the first display pixel. The first opaque glue 108 may include a first outer edge glue part. The first outer edge glue location is outside the first display pixel. Referring to FIG. 4A, for example, the first outer edge glue portion 112U is located in the light-emitting units 104R, 104G, and 110 of the first display pixels 110 ₁₁ , 110 ₁₂ , 110 ₁₃ , and 110 ₁₄ that are sequentially arranged along the first direction D1 And the upper side of 104B. The first outer edge glue portion 112L is located on the left side of the light-emitting unit 104R of the first display pixels 110 ₁₁ , 110 ₂₁ , 110 ₃₁ , and 110 ₄₁ sequentially arranged along the third direction D3. The first outer edge glue portion 112R is located on the right side of the light-emitting unit 104B of the first display pixels 110 ₁₄ , 110 ₂₄ , 110 ₃₄ , and 110 ₄₄ sequentially arranged along the third direction D3. The first outer edge glue portion 112D is located on the lower side of the light-emitting units 104R, 104G, and 104B of the first display pixels 110 ₄₁ , 110 ₄₂ , 110 ₄₃ , and 110 ₄₄ that are sequentially arranged along the first direction D1.

The first opaque glue 108 may also include a first spacer glue part. The gap between the first spacer glue part and the first display pixel. For example, the adhesive portion 114 of the first spacer ₁₁ between the first display pixel of a light emitting unit 104B 110 ₁₁ 104R and the first light emitting unit ₁₂ displays the pixels 110 of the first circuit board 102. The first spacer 114 ₁₂ is located on the first circuit substrate 102 between the light emitting unit 104B of the first display pixel 110 _{12 and} the light emitting unit 104R of the first display pixel 110 ₁₃ . The first portion 114 of plastic spacer ₁₃ between the first display pixel of a light emitting unit 104B 110 ₁₃ 104R and the light emitting unit pixels 110 of the first display ₁₄ on the first circuit board 102. The first spacer 114 ₂₁ is located on the first circuit substrate 102 between the first display pixel 110 ₁₁ and the first display pixel 110 ₂₁ . The first spacer rubber portion 114 ₃₁ is located on the first circuit substrate 102 between the first display pixel 110 ₂₁ and the first display pixel 110 ₃₁ . The first spacer rubber portion 114 ₄₁ is located on the first circuit substrate 102 between the first display pixels 110 ₃₁ and the first display pixels 110 ₄₁ . In an embodiment, the first spacer glue part may have the same width. For example, the first spacer rubber parts 114 ₁₁ , 114 ₁₂ , and 114 ₁₃ may have the same width in the first direction D1. The first spacer rubber parts 114 ₂₁ , 114 ₃₁ , and 114 ₄₁ may have the same width in the third direction D3. The other first spacer glue parts and their configurations can be deduced by analogy.

In an embodiment, the first outer edge glue portion and the first spacer glue portion of the first opaque glue 108 may have the same height. Alternatively, the upper surface of the first outer edge glue part and the upper surface of the first spacer glue part may be located at the same height. In an embodiment, the width of the first outer edge glue part may be 1/2 of the width of the first spacer glue part. For example, the width of the first outer edge glue portion 112L in the first direction D1 may be 1/2 of the width of the first spacer glue portion 114 to ₁₁ in the first direction D1. In an embodiment, the width of the first outer edge glue portion 112U in the third direction D3 is 1/2 of the width of the first spacer glue portion 114 ₂₁ in the third direction D3.

Referring to FIG. 5, a second display device 200 is provided. The second display device 200 may include a second circuit substrate 202, a second opaque colloid 208, and a second display pixel. The second display pixels are, for example, second display pixels 210 ₁₁ , 210 ₁₂ , 210 ₁₃ , and 210 ₁₄ arranged in sequence in the first direction D1. Each second display pixel may include a light-emitting unit 204R, a light-emitting unit 204G, and a light-emitting unit 204B. In one embodiment, the light-emitting unit 204R is a red light-emitting diode, the light-emitting unit 204G is a green light-emitting diode, and the light-emitting unit 204B is a blue light-emitting diode. In one embodiment, the light emitting unit can be a micro light emitting diode (Micro LED) arranged on the second circuit substrate 202 in a mass transfer method. In an embodiment, the light-emitting unit of the second display pixel may be electrically connected to the second circuit substrate 202 by a printing method. It should be noted that the second circuit substrate 202 in the present invention is not limited to any material, for example, it can be a glass circuit substrate, a plastic circuit substrate, or the like.

The second opaque glue 208 includes second outer edge glue parts 212L, 212R, 212U, 212D and a second spacer glue part. The second outer edge glue portions 212L, 212R, 212U, and 212D are located outside the second display pixels. The second spacer glue part is the gap between the second display pixels. For example, the second spacer 214 adhesive ₁₁ on the second display pixel _{11 is} the light emitting unit 210 and light emitting units 204B of the second display pixel ₂₁ 012 second circuit substrate 202 between 204R. The second spacer rubber part 214 ₁₂ is located on the second circuit substrate 202 between the light emitting unit 204B of the second display pixel 210 _{12 and} the light emitting unit 204R of the second display pixel 210 ₁₃ . The second spacer 214 adhesive ₁₃ on the second light emitting unit 204B and the display pixel ₂₁₀₁₄ of the second circuit substrate 202 between the light emitting unit 204R of the second display pixel of _21,013. In an embodiment, the second spacer glue part may have the same width. For example, the second spacer glue parts 214 ₁₁ , 214 ₁₂ , and 214 ₁₃ may have the same width in the first direction D1. Other second spacer glue parts and their configurations can be deduced by analogy.

In an embodiment, the second outer edge glue portion and the second spacer glue portion of the second opaque glue 208 may have the same height in the second direction D2. Alternatively, the upper surface of the second outer edge glue part and the upper surface of the second spacer glue part may be located at the same height. The upper surfaces of the second outer edge glue portion and the second spacer glue portion of the second opaque glue 208 are higher than the upper surfaces of the light emitting unit 204R, the light emitting unit 204G, and the light emitting unit 204B (such as a light emitting diode). In one embodiment, the second opaque colloid 208 includes black colloid or gray colloid. The material of the second opaque colloid 208 may include, for example, silicone resin, such as silicone (silicone), or packaging material such as epoxy resin, or other suitable materials. The first direction D1, the second direction D2, and the third direction D3 may be substantially perpendicular to each other. In an embodiment, the first direction D1 may be the X-axis direction, the second direction D2 may be the Z-axis direction, and the third direction D3 may be the Y-axis direction.

In an embodiment, the component configuration and/or manufacturing method of the second display device 200 may be similar or the same as that of the first display device 100. But this disclosure is not limited to this. In another embodiment, the first display device 100 and the second display device 200 may have different component configurations and/or manufacturing methods.

Then, the first display device 100 and the second display device 200 are arranged on the base plate 316, and the first display device 100 and the second display device 200 are spliced together. In one embodiment, the first circuit substrate 102 and the second circuit substrate 202 are fixed on the base plate 316 by an adhesive layer, and there is a joint 311 between the first display device 100 and the second display device 200. And there is no glue at the joint 311. In detail, the splicing seam 311 is defined between the adjacent glue side surfaces of the first outer edge glue portion 112L and the second outer edge glue portion 212R facing each other. The first outer edge glue portion 112L and the second outer edge glue portion 212R are not adhered to each other. The splicing seam 311 is also defined between the side surfaces of the first circuit substrate 102 and the second circuit substrate 202 facing each other. The first circuit substrate 102 and the second circuit substrate 202 are not bonded to each other. In an embodiment, the splicing seam 311 is formed by the first outer edge glue portion 112L and the second outer edge glue portion 212R being adjacent to each other, and/or the first circuit substrate 102 and the second circuit substrate 202 are adjacent to each other. form. The splicing seam 311 may be a gap.

FIG. 5A shows a top view of the first display device 100 and the second display device 200 after being spliced together according to an embodiment. Figure 5 may be a cross-sectional view drawn along the section line CD in Figure 5A. Referring to FIGS. 5 and 5A, the heights of the first spacer glue part and the first outer edge glue part of the first display device 100 are the same as the second spacer glue part and the second outer edge glue part of the second display device 200 unit. Alternatively, the widths of the first spacer glue parts 114 ₁₁ , 114 ₁₂ , 114 ₁₃ , 114 ₂₁ , 114 ₃₁ , 114 ₄₁ are the same as the total width of the first outer edge glue part and the second outer edge glue part, that is, each The width of a spacer glue part is equal to the sum of the widths of the first outer edge glue part and the second outer edge glue part. In an embodiment, the upper surfaces of the first opaque colloid 108 and the second opaque colloid 208 are higher than the light emitting unit (for example, the light emitting unit 104R, the light emitting unit 104G, the light emitting unit 104B, the light emitting unit 204R, the light emitting unit 204G, the light emitting unit The upper surface of the unit 204B) can thereby avoid interference between adjacent display pixels, and can also improve the visibility at the joint 311.

In an embodiment, the overall cross-sectional profile of the first outer edge glue part and the second outer edge glue part that are spliced together may be substantially the same as the cross-sectional profile of the adjacent first and second spacer rubber parts, thereby The display pixels adjacent to the stitching seam 311 provide substantially the same optical effect, which can also improve the visibility at the stitching seam 311. For example, referring to FIG. 5, the cross-sectional profile of the first spacer glue portion 114 to ₁₁ may be the same as the overall cross-sectional profile of the first outer edge glue portion 112L and the second outer edge glue portion 212R, and the first outer edge glue portion 112L It is arranged adjacent to the second outer edge glue part 212R. The first spacer rubber parts 114 ₁₁ , 114 ₁₂ and 114 ₁₃ and the second spacer rubber parts 214 ₁₁ , 214 ₁₂ , and 214 ₁₃ may have the same cross-sectional profile.

Please refer to FIG. 6, the protective layer 318 can be configured on the first display device 100 and the second display device 200. The protective layer 318 may cover the light emitting unit 104R, the light emitting unit 104G, and the light emitting unit 104B of the first display device 100, and the light emitting unit 204R, the light emitting unit 204G, and the light emitting unit 204B of the second display device 200. The protective layer 318 can also cover the first opaque glue 108 of the first display device 100 and the second opaque glue 208 of the second display device 200. The protective layer 318 can be formed by spraying a curable colloidal material and then performing a curing step. It can also be formed by other suitable methods, such as a coating method or an injection method. The protective layer 318 can provide a protective effect to the covered components, for example, avoid the influence of moisture, air, and the like.

Fig. 7 shows a cross-sectional view of a display according to another embodiment. The difference from the display shown in Fig. 6 is that a protective layer 418 having a plate shape is disposed on the upper surface of the first opaque colloid 108 and the first Two opaque colloids 208 on the upper surface. The material of the protective layer 418 may include, for example, glass or plastic. There may be gaps between the protective layer 418 and the light emitting units 104R, 104G, 104B, 204R, 204G, and 204B. The protective layer 418 can also provide protection for the covered device (light emitting unit).

In summary, in the present invention, the first display device and the second display device are spliced together, and the first outer edge glue portion of the first display device and the second outer edge glue portion of the second display device face each other and face each other. Therefore, the visual perception of the splicing seam is reduced, and the display effect can be effectively improved; and further, the upper surface of the first opaque colloid and the second opaque colloid are higher than the light-emitting unit, which can avoid It avoids interference between adjacent display pixels, and can also improve the visibility at the joints.

To sum up, although the present disclosure has been disclosed as above by embodiments, it is not intended to limit the present disclosure. Those with ordinary knowledge in the technical field to which this disclosure belongs can make various changes and modifications without departing from the spirit and scope of this disclosure. Therefore, the protection scope of this disclosure shall be subject to the scope of the attached patent application.

100: The first display device

102: The first circuit board

204R, 204G, 204B: light-emitting unit

108: The first opaque colloid

110 ₁₁ ~110 ₁₄ : the first display pixel

112L, 112R, 112U, 112D: the first outer edge glue part

114 ₁₁ ~114 ₁₃ : The first spacer rubber part

D1: First direction

D2: second direction

D3: Third party

200: second display device

202: second circuit board

208: The second opaque colloid

210 ₁₁ ~210 ₁₄ : second display pixel

212L, 212R, 212U, 212D: second outer edge glue part

214 ₁₁ , 214 ₁₂ , 214 ₁₃ : second spacer glue part

316: base plate

311: stitching

Claims (12)

A display device includes a first display device and a second display device. The first display device includes: a first circuit substrate; a plurality of first display pixels electrically connected to the first circuit substrate; and a second An opaque glue includes a first outer edge glue part and a first spacer glue part, the first spacer glue part is in the gap between the first display pixels, and the first outer edge glue part is in the Outside the first display pixel, the second display device includes: a second circuit substrate; a plurality of second display pixels electrically connected to the second circuit substrate; and a second opaque colloid, including a second The outer edge glue part, the second outer edge glue part is outside the second display pixels, wherein the first display device and the second display device are spliced together, the first outer edge glue part and the second outer edge The glue parts face each other and are adjacent to each other. The first spacer glue part, the first outer edge glue part and the second outer edge glue part have the same height, and the width of the first spacer glue part is the same as the The total width of the first outer edge glue part and the second outer edge glue part. A display device includes a first display device and a second display device. The first display device includes: a first circuit substrate; a plurality of first display pixels electrically connected to the first circuit substrate; and a second An opaque glue includes a first outer edge glue part and a first spacer glue part, the first spacer glue part is in the gap between the first display pixels, and the first outer edge glue part is in the Outside the first display pixel, the second display device includes: a second circuit substrate; a plurality of second display pixels electrically connected to the second circuit substrate; and a second opaque colloid, including a second The outer edge glue part, the second outer edge glue part is outside the second display pixels, wherein the first display device and the second display device are spliced together, the first outer edge glue part and the second outer edge The glue parts face each other and are adjacent to each other. The first spacer glue part, the first outer edge glue part and the second outer edge glue part have the same height, wherein the first circuit substrate and the second circuit substrate are There is a splicing seam between, and the splicing seam does not have glue. The display described in item 2 of the scope of the patent application further includes a base board, wherein the first circuit board and the second circuit board are fixed on the base board. A display device includes a first display device and a second display device. The first display device includes: a first circuit substrate; a plurality of first display pixels electrically connected to the first circuit substrate; and a second An opaque glue includes a first outer edge glue part and a first spacer glue part, the first spacer glue part is in the gap between the first display pixels, and the first outer edge glue part is in the Outside the first display pixel, the second display device includes: a second circuit substrate; a plurality of second display pixels electrically connected to the second circuit substrate; and a second opaque colloid, including a second The outer edge glue part, the second outer edge glue part is outside the second display pixels, wherein the first display device and the second display device are spliced together, the first outer edge glue part and the second outer edge The glue parts face each other and are adjacent to each other. There is a joint between the first circuit substrate and the second circuit substrate, and there is no glue at the joint. For the display described in item 1, item 2, or item 4 of the scope of patent application, a cross-sectional profile of the first spacer glue part is the same as that of the first outer edge glue part and the second outer edge glue part An overall profile profile. For the display described in item 1, item 2, or item 4 of the scope of patent application, the first opaque colloid and the second opaque colloid are black colloids. For the display described in item 1, item 2 or item 4 of the scope of patent application, there is a splicing seam between the first outer edge glue part and the second outer edge glue part, and the seam is not With viscose. For the display described in item 1, item 2, or item 4 of the scope of patent application, the first display pixels and the second display pixels each include a plurality of light-emitting units, and the light-emitting units include light-emitting diodes, The upper surfaces of the first opaque colloid and the second opaque colloid are higher than the upper surfaces of the light-emitting diodes. The display described in item 1, item 2, or item 4 of the scope of patent application further includes a protective layer on the first opaque colloid and the second opaque colloid. A method for manufacturing a display: a first display device is provided. The first display device includes: a first circuit substrate; a plurality of first display pixels on the first circuit substrate; and a first opaque colloid, On the first circuit substrate, it includes a first outer edge glue part and a first spacer glue part, the first spacer glue part Located in the gap between the first display pixels, the first outer edge glue part is outside the first display pixels; a second display device is provided, and the second display device includes: a second circuit substrate; A second display pixel on the second circuit substrate; and a second opaque colloid, including a second outer edge glue part, the second outer edge glue part being outside the second display pixels; and The first display device and the second display device are spliced together, wherein the first outer edge glue part and the second outer edge glue part face each other and are adjacent to each other, and the first circuit substrate and the second circuit The substrates face each other and are adjacent to each other, wherein the width of the first spacer glue part is the same as the total width of the first outer edge glue part and the second outer edge glue part. According to the manufacturing method of the display described in claim 10, the method of forming the first display device includes: arranging a plurality of light-emitting units on the first circuit substrate; forming a mask on the light-emitting units; And disposing a first opaque colloid on the part of the first circuit substrate that is not covered by the mask. As described in item 10 of the scope of patent application, the manufacturing method of the display further includes after the splicing of the first display device and the second display device together, disposing a protective layer on the first opaque colloid and the On the second opaque colloid.

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