TW202102901A - Display apparatus - Google Patents

Abstract

A display apparatus including a first substrate, a second substrate, a sealant, and a plurality of spacer posts is provided. The first substrate has a display area and a peripheral area adjacent to the display area. The second substrate faces the first substrate. The sealant is located between the first substrate and the second substrate, and the sealant surrounds the display area. The plurality of spacer posts are located between the first substrate and the second substrate, and the spacer posts are partially overlapped with the sealant in a direction perpendicular to the first substrate. At least a portion of the spacer posts each includes a trunk portion and a protrusion portion. The trunk portion has a first side facing the display area and a second side opposite to the first side. The protrusion portion is located on the second side.

Description

Display device

The present invention relates to a display device, and more particularly to a display device with sealant.

Currently, most display devices on the market have an upper substrate, a lower substrate, and a sealant that connects the upper substrate and the lower substrate together. In addition to fixing the upper substrate and the lower substrate, the sealant can also isolate the display area of the display device from the outside world.

When applying the sealant, the sealant is usually applied along the shape of the upper substrate and/or the lower substrate to maximize the display area of the display device. However, when the frame of the display device is very narrow or the display device has a complicated shape, the sealant is prone to uneven coating, causing the upper substrate and the lower substrate to easily peel off.

The present invention provides a display device that can improve the uneven distribution of sealant.

At least one embodiment of the present invention provides a display device. The display device includes a first substrate, a second substrate, a sealant, and a plurality of spacers. The first substrate has a display area and a peripheral area adjacent to the display area. The second substrate faces the first substrate. The sealant is located between the first substrate and the second substrate, and the sealant surrounds the display area. A plurality of spacers are located between the first substrate and the second substrate, and the spacers partially overlap the sealant in a direction perpendicular to the first substrate. At least part of the spacers each include a main stem and a protrusion. The trunk portion has a first side facing the display area and a second side opposite to the first side. The protrusion is on the second side.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

FIG. 1A is a schematic top view of a display device according to an embodiment of the invention. Fig. 1B is a schematic cross-sectional view taken along the line aa' of Fig. 1A. For the convenience of description, FIG. 1A omits drawing some components in FIG. 1B.

1A and 1B, the display device 10 includes a first substrate 100, a second substrate 200, a sealant 300, and a plurality of spacers 400.

The first substrate 100 has a display area AA and a peripheral area BA adjacent to the display area AA. In this embodiment, the sealant 300 is located between the display area AA and the peripheral area BA. In this embodiment, the first substrate 100 is a pixel array substrate, and the pixel array 110 is located in the display area AA of the first substrate 100.

The second substrate 200 faces the first substrate 100. The sealant 300 is located between the first substrate 100 and the second substrate 200, and the sealant 300 surrounds the display area AA. In this embodiment, the display device 10 further includes a display medium L. The display medium L is located between the first substrate 100 and the second substrate 200, and the sealant 300 surrounds the display medium L. The display medium L is, for example, liquid crystal or other display media. In this embodiment, the width W of the sealant 300 is less than or equal to 700 microns.

A plurality of spacers 400 are located between the first substrate 100 and the second substrate 200, and the spacers 400 partially overlap the sealant 300 in a direction D perpendicular to the first substrate 100. At least part of the spacers 400 each include a main portion 410 and a protrusion 420. The trunk portion 410 has a first side S1 facing the display area AA and a second side S2 opposite to the first side S1. The protrusion 420 is located on the second side S2, and the main stem 410 protrudes toward the edge of the first substrate 100. With the arrangement of the main stem 410 and the protruding portion 420, when the sealant 300 is applied, the sealant 300 will first contact the protruding portion 420, and then overflow to the gap between the adjacent main stems 410, in other words , The spacer 400 can guide the overflow direction of the sealant 300 to improve the uneven distribution of the sealant 300. In this embodiment, there is a row of spacers 400 under the sealant 300, but the invention is not limited to this. In other embodiments, there may be multiple rows of spacers 400 under the sealant 300, and in the row of spacers 400 closest to the display area AA, the first side S1 of the stem portion 410 faces the display area AA, and the protrusion 420 is located on the second side S2.

In this embodiment, the protruding portion 420 is closer to the center C of the width W of the sealant 300 than the trunk portion 410. In this embodiment, part of the protrusion 420 overlaps the sealant 300 in the direction D perpendicular to the first substrate 100. In other embodiments, part of the protruding part 420 and part of the trunk part 410 overlap the sealant 300 in the direction D perpendicular to the first substrate 100.

In this embodiment, the first substrate 100 is a special-shaped substrate, in other words, the first substrate 100 is a non-rectangular substrate. The first substrate 100 includes a first edge E1 having a first curvature and a second edge E2 having a second curvature greater than the first curvature. In other words, the first edge E1 has a larger turn than the second edge E2. The spacing D1 between the spacers 400 close to the first edge E1 is greater than the spacing D2 between the spacers 400 close to the second edge E2. In this embodiment, the distance D1 between the trunk portions 410 near the first edge E1 is greater than the distance D2 between the trunk portions 410 near the second edge E2. Therefore, when the sealant 300 is applied, there can be a larger gap between the spacers 400 close to the first edge E1 to overflow, so as to further improve the uneven distribution of the sealant 300. In some embodiments, the distance between the stem portions 410 (including the distance D1 and the distance D2) is 5 to 25 microns.

In this embodiment, the height t of the protrusion 420 is smaller than the height T of the trunk portion 410. Therefore, the upper portion of the protrusion 420 and the second side S2 of the main stem portion 410 facing the edge of the first substrate 100 can be used to store the sealant 300 to facilitate the guiding of the overflow direction of the sealant 300.

The material of the protrusion 420 includes, for example, a color resist, an inorganic layer, an organic photoresist material, or a stack of the foregoing materials, and the material of the main portion 410 includes, for example, a color resist, an inorganic layer, an organic photoresist material, or a stack of the foregoing materials. In this embodiment, the material of the protrusion 420 is different from the material of the stem 410.

In this embodiment, it is taken as an example that each spacer 400 includes a main stem portion 410 and a protruding portion 420, but the present invention is not limited to this. In other embodiments, part of the spacer 400 does not include the protrusion 420.

Based on the above, the spacer 400 of the display device 10 partially overlaps the sealant 300 in the direction perpendicular to the first substrate 100, and at least part of the spacer 400 each includes a main portion 410 and a protrusion 420, wherein the protrusion 420 faces the main stem 410 The edge of the first substrate 100 protrudes. Therefore, the spacer 400 can guide the overflow direction of the sealant 300 to improve the uneven distribution of the sealant 300.

2 is a schematic cross-sectional view of a display device according to an embodiment of the invention.

It must be noted here that the embodiment of FIG. 2 uses the element numbers and part of the content of the embodiment of FIGS. 1A and 1B, wherein the same or similar reference numbers are used to indicate the same or similar elements, and the same technical content is omitted Description. For the description of the omitted parts, reference may be made to the foregoing embodiment, which will not be repeated here.

The main difference between the display device 20 of FIG. 2 and the display device 10 of FIG. 1B is that the main portion 410 of the display device 20 has a multilayer structure, and the protrusion 420 of the display device 20 has a multilayer structure.

In this embodiment, the backbone portion 410 includes a first layer 412 and a second layer 414. The first layer 412 and the second layer 414 may be the same or different materials.

In this embodiment, the protrusion 420 includes a first layer 422 and a second layer 424. The first layer 422 and the second layer 424 may be the same or different materials.

Although in this embodiment, the main portion 410 and the protruding portion 420 both have a double-layer structure, the present invention is not limited to this. In other embodiments, both the main portion 410 and the protruding portion 420 have a multi-layer structure with more than three layers.

Based on the above, the spacer 400 of the display device 20 partially overlaps the sealant 300 in the direction D perpendicular to the first substrate 100, and at least part of the spacer 400 each includes a main portion 410 and a protrusion 420, wherein the protrusion 420 is the main stem 410 It protrudes toward the edge of the first substrate 100. Therefore, the spacer 400 can guide the overflow direction of the sealant 300 to improve the uneven distribution of the sealant 300.

FIG. 3 is a schematic top view of a display device according to an embodiment of the invention.

It must be noted here that the embodiment of FIG. 3 uses the element numbers and part of the content of the embodiment of FIGS. 1A and 1B, wherein the same or similar numbers are used to represent the same or similar elements, and the same technical content is omitted. Description. For the description of the omitted parts, reference may be made to the foregoing embodiment, which will not be repeated here.

The main difference between the display device 30 of FIG. 3 and the display device 10 of FIG. 1B is that the shape of the protrusion 420 of the display device 30 is different from the shape of the protrusion 420 of the display device 10.

Please refer to FIG. 3, each protrusion 420 has a third side S3 connected to the second side S2 of the corresponding trunk portion 410 and a fourth side S4 opposite to the third side S3. The width I1 of the fourth side S4 is less than or equal to the width I2 of the third side S3. In this embodiment, the width I1 is smaller than the width I2, and the width of the protrusion 420 increases as it approaches the main portion 410. Therefore, it helps to make the sealant 300 flow along the inclined side of the protrusion 420 and control the frame The direction of glue 300 overflow.

In some embodiments, the width I2 of the third side S3 and the width I1 of the fourth side S4 are 5-10 microns. In some embodiments, the width I3 of the second side S2 of the trunk portion 410 is 10-50 microns. In some embodiments, the ratio of the width I1 of the fourth side S4 of the protrusion 420 to the width I3 of the second side S2 of the trunk portion 410 is greater than 0.1 and less than 1, thereby increasing the bonding area of the sealant 300 to increase Adhesion.

In some embodiments, the length 1 of the protrusion 420 is 10 to 50 microns. In some embodiments, the length L of the trunk portion 410 is 5 to 20 microns. In some embodiments, the ratio of the length l to the length L is 0.5 to 10, so that the bonding area of the sealant 300 can be increased to increase the adhesion.

In this embodiment, the volume of at least one of the protrusions 420 is A1, and the volume of the gap G between the trunk portion 410 of one of the protrusions 420 and the adjacent other trunk portion 410 is A2, and A1 is less than or equal to A2, by this, the overflow direction of the sealant 300 can be better controlled.

The sealant 300 fills the gap G between part of the main stem 410. The sealant 300 does not fill the gap G between the other part of the main stem 410. In this embodiment, the gap G is partially filled by the sealant 300, so that a narrower sealant 300 can be obtained, and the bonding area of the sealant 300 can be increased at the same time.

Based on the above, the spacer 400 of the display device partially overlaps the sealant 300 in the direction perpendicular to the first substrate 100, and at least part of the spacer 400 each includes a main stem 410 and a protrusion 420, wherein the protrusion 420 faces the main stem 410 The edge of a substrate 100 protrudes. Therefore, the spacer 400 can guide the overflow direction of the sealant 300 to improve the uneven distribution of the sealant 300.

Fig. 4 is a schematic top view of a spacer column according to an embodiment of the present invention.

It must be noted here that the embodiment of FIG. 4 uses the element numbers and part of the content of the embodiment of FIGS. 1A and 1B, wherein the same or similar numbers are used to represent the same or similar elements, and the same technical content is omitted. Description. For the description of the omitted parts, reference may be made to the foregoing embodiment, which will not be repeated here.

Please refer to FIG. 4, the shape of the protrusion 420 of the spacer 400 is a triangle. The outer sides of the protrusion 420 help to make the sealant overflow toward the two sides of the spacer 400.

Fig. 5 is a schematic top view of a spacer column according to an embodiment of the present invention.

It must be noted here that the embodiment of FIG. 5 uses the element numbers and part of the content of the embodiment of FIGS. 1A and 1B, wherein the same or similar reference numbers are used to represent the same or similar elements, and the same technical content is omitted. Description. For the description of the omitted parts, reference may be made to the foregoing embodiment, which will not be repeated here.

Please refer to FIG. 5, the shape of the protrusion 420 of the spacer 400 is an arc shape (for example, a semi-elliptical circle). The outwardly curved surface of the protrusion 420 helps to make the sealant overflow toward the two sides of the spacer 400.

FIG. 6 is a schematic top view of a display device according to an embodiment of the invention.

It must be noted here that the embodiment of FIG. 6 uses the element numbers and part of the content of the embodiment of FIGS. 1A and 1B, wherein the same or similar reference numbers are used to represent the same or similar elements, and the same technical content is omitted. Description. For the description of the omitted parts, reference may be made to the foregoing embodiment, which will not be repeated here.

The main difference between the display device 40 of FIG. 6 and the display device 10 of FIG. 1B is that a portion of the trunk portion 410 of the display device 40 has a curved shape, and the spacer 400 includes a plurality of protrusions 420 of different shapes.

Please refer to FIG. 6, the main stem portion 410 is deformed corresponding to the shape of the edge of the first substrate 100, and the main stem portion 410 is substantially parallel to the direction of the tangent line to the edge of the first substrate 100. The part of the main portion 410 has two or more different extension directions.

In this embodiment, the curvature of the trunk portion 410 will vary with the curvature of the edge of the first substrate 100. In this embodiment, there may be protrusions 420 of different shapes depending on the position.

Based on the above, the spacer 400 of the display device 40 partially overlaps the sealant 300 in the direction perpendicular to the first substrate 100, and at least part of the spacer 400 each includes a main portion 410 and a protrusion 420, wherein the protrusion 420 faces the main stem 410 The edge of the first substrate 100 protrudes. Therefore, the spacer 400 can guide the overflow direction of the sealant 300 to improve the uneven distribution of the sealant 300.

FIG. 7 is a schematic top view of a display device according to an embodiment of the invention.

It must be noted here that the embodiment of FIG. 7 uses the element numbers and part of the content of the embodiment of FIGS. 1A and 1B, wherein the same or similar numbers are used to represent the same or similar elements, and the same technical content is omitted. Description. For the description of the omitted parts, reference may be made to the foregoing embodiment, which will not be repeated here.

Referring to FIG. 7, in this embodiment, the first substrate 100 of the display device 50 has an opening OP, and the edge of the first substrate 100 includes the edge of the opening OP. In this embodiment, part of the sealant 300 is located between the display area AA and the opening OP.

In this embodiment, the protrusion 420 protrudes from the main stem 410 toward the opening OP of the first substrate 100. In this embodiment, part of the spacer 400 does not include the protrusion 420.

Based on the above, the spacer 400 of the display device 50 partially overlaps the sealant 300 in the direction perpendicular to the first substrate 100, and at least part of the spacer 400 each includes a main portion 410 and a protrusion 420, wherein the protrusion 420 faces the main stem 410 The edge of the first substrate 100 protrudes. Therefore, the spacer 400 can guide the overflow direction of the sealant 300 to improve the uneven distribution of the sealant 300.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

10, 20, 30, 40, 50: display device 100: first substrate 110: pixel array 200: second substrate 300: frame glue 400: Spacer column 410: main cadre 412, 422: first layer 420: protrusion 414, 424: second layer AA: Display area A1, A2: Volume BA: Surrounding area C: Central D: direction D1, D2: spacing E1: First edge E2: second edge G: gap L, l: length I1, I2, I3, W: width OP: Opening S1: First side S2: second side S3: Third side S4: Fourth side T, t: height

FIG. 1A is a schematic top view of a display device according to an embodiment of the invention. Fig. 1B is a schematic cross-sectional view taken along the line aa' of Fig. 1A. 2 is a schematic cross-sectional view of a display device according to an embodiment of the invention. FIG. 3 is a schematic top view of a display device according to an embodiment of the invention. Fig. 4 is a schematic top view of a spacer column according to an embodiment of the present invention. Fig. 5 is a schematic top view of a spacer column according to an embodiment of the present invention. FIG. 6 is a schematic top view of a display device according to an embodiment of the invention. FIG. 7 is a schematic top view of a display device according to an embodiment of the invention.

10: Display device

100: first substrate

300: frame glue

400: Spacer column

410: main cadre

420: protrusion

AA: Display area

BA: Surrounding area

D: direction

D1, D2: spacing

E1: First edge

E2: second edge

Claims (15)

A display device includes: A first substrate having a display area and a peripheral area adjacent to the display area; A second substrate facing the first substrate; A sealant located between the first substrate and the second substrate, and the sealant surrounds the display area; and A plurality of spacers are located between the first substrate and the second substrate, and the spacers partially overlap the sealant in a direction perpendicular to the first substrate, wherein at least some of the spacers each include: A trunk portion having a first side facing the display area and a second side opposite to the first side; and A protruding portion located on the second side, wherein the protruding portion has a third side connected to the second side of the trunk portion and a fourth side opposite to the third side, the width of the second side Greater than the width of the third side. As for the display device described in the first item of the scope of patent application, the width of the protrusions increases as they approach the backbone. As for the display device described in item 1 of the scope of patent application, the height of the protrusions is smaller than the height of the backbone. As for the display device described in item 1 of the scope of patent application, the ratio of the length of the protruding parts to the length of the trunk part is 0.5-10. As for the display device described in item 1 of the scope of patent application, the ratio of the width of the fourth side to the width of the second side is greater than 0.1 and less than 1. In the display device described in item 1 of the scope of patent application, the material of the protrusions is different from the material of the backbone. The display device according to claim 1, wherein the first substrate is a special-shaped substrate, and the first substrate includes a first edge with a first curvature and a second curvature with a second curvature greater than the first curvature. An edge, wherein the spacing between the spacing columns close to the first edge is greater than the spacing between the spacing columns close to the second edge. As described in the first item of the scope of patent application, the spacers include the protrusions of different shapes. As for the display device described in item 1 of the scope of patent application, the volume of one of the protrusions is A1, and the gap between the trunk portion of one of the protrusions and another adjacent trunk portion is connected The volume is A2, and A1 is less than or equal to A2. In the display device described in item 1 of the scope of patent application, some of the main stems have a curved shape. As for the display device described in the first item of the scope of patent application, a part of the main stems overlaps the sealant in a direction perpendicular to the first substrate. As for the display device described in item 1 of the scope of patent application, the sealant fills a part of the gap between the main parts. For the display device described in item 12 of the scope of patent application, the sealant does not fill the gap between the other part of the main parts. As for the display device described in item 1 of the scope of patent application, the width of the sealant is less than or equal to 700 microns. As for the display device described in claim 1, wherein the protruding portions are closer to the center of the width of the sealant than the main stem portions.

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