Display device

Abstract

The present invention discloses a display device, comprising at least one display panel. The at least one display panel comprises a substrate, a pixel array, a conductive element and a protective glue. The substrate has a front side, a back side relative to the front side and a side wall connecting the front side and the back side. The pixel array is arranged on the front side of the substrate. The conductive element is at least arranged on the side wall of the substrate and is electrically connected to the pixel array. The protective glue is at least arranged on the side wall of the substrate and covers the conductive element. The protective glue has a first surface, a second surface and a connecting surface arranged opposite to the side wall of the substrate. The first surface is located on the conductive element. The distance between the first surface and the side wall of the substrate is greater than the distance between the second surface and the side wall of the substrate. The connecting surface is connected to the first surface and the second surface.

Description

Technical Field

[0001] The present invention relates to a photoelectric device, and in particular to a display device. Background Art

[0002] As the application of display devices becomes more popular, they can be found in home TVs, gaming screens, large outdoor billboards, public information screens in stores, and even portable or wearable electronic devices. In recent years, in addition to the continuous increase in the mainstream size of display panels, in response to consumer demand for high-end electronic products, spliced ​​display devices composed of multiple display panels are also one of the key projects actively developed by many panel manufacturers. However, the gaps between multiple display panels will affect the overall visual effect of the spliced ​​display device. Therefore, how to reduce the gap width between multiple display panels is one of the important issues for researchers. Summary of the invention

[0003] The invention provides a display device with good visual effect.

[0004] The display device of the present invention includes at least one display panel. At least one display panel includes a substrate, a pixel array, a conductive element and a protective glue. The substrate has a front side, a back side relative to the front side and a side wall connecting the front side and the back side. The pixel array is arranged on the front side of the substrate. The conductive element is at least arranged on the side wall of the substrate and is electrically connected to the pixel array. The protective glue is at least arranged on the side wall of the substrate and covers the conductive element. The protective glue has a first surface, a second surface and a connecting surface arranged opposite to the side wall of the substrate. The first surface is located on the conductive element. The distance between the first surface and the side wall of the substrate is greater than the distance between the second surface and the side wall of the substrate. The connecting surface is connected to the first surface and the second surface.

[0005] In one embodiment of the present invention, the connecting surface and the second surface form an angle in the material of the protective glue, and the angle is substantially equal to 90°.

[0006] In one embodiment of the present invention, the connecting surface and the second surface form an angle within the material of the protective glue, and the angle is greater than 0° and less than 90°.

[0007] In an embodiment of the present invention, the connecting surface comprises a curved surface.

[0008] In an embodiment of the present invention, the connection surface includes a first sub-connection surface and a second sub-connection surface.

[0009] The first sub-connection surface is connected to the first surface. The second sub-connection surface is connected to the first sub-connection surface and the second surface.

[0010] The first sub-connection surface is interlaced with the second sub-connection surface.

[0011] In one embodiment of the present invention, the protective glue comprises a convex portion and a flat portion. The convex portion covers the conductive element and has a first surface and a connection surface of the protective glue. The flat portion has a second surface of the protective glue. The convex portion protrudes from the flat portion and is connected to the flat portion to define a depression of the protective glue.

[0012] In one embodiment of the present invention, the at least one display panel is a plurality of display panels; each display panel includes the substrate, the pixel array, the conductive element, and the protective glue. The plurality of display panels include a first display panel and a second display panel, and the convex portion of the protective glue of the first display panel is disposed in the concave portion of the protective glue of the second display panel.

[0013] In one embodiment of the present invention, a direction is substantially parallel to the sidewall of the substrate of the first display panel, and the conductive element of the first display panel and the conductive element of the second display panel partially overlap in the direction.

[0014] In an embodiment of the present invention, the connection surface of each display panel and the second surface form an angle within the material of the protective glue, and the angle of the first display panel is substantially equal to the angle of the second display panel.

[0015] In an embodiment of the present invention, the connection surface of each display panel and the second surface form an angle within the material of the protective glue, and the angle of the first display panel is greater than the angle of the second display panel.

[0016] In an embodiment of the present invention, the connection surface of each display panel and the second surface form an angle within the material of the protective glue, and the angle of the first display panel is smaller than the angle of the second display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a top view of a display device 10 according to an embodiment of the present invention.

[0018] Figure 2 FIG. 1 is a partial enlarged schematic diagram of a display device 10 according to an embodiment of the present invention.

[0019] Figure 3 FIG. 1 is a schematic three-dimensional diagram of a display panel 100 of a display device 10 according to an embodiment of the present invention.

[0020] Figure 4 FIG. 1 is a partially enlarged schematic diagram of a display device 10A according to another embodiment of the present invention.

[0021] Figure 5 FIG. 1 is a partial enlarged schematic diagram of a display device 10B according to another embodiment of the present invention.

[0022] Figure 6FIG. 1 is a partial enlarged schematic diagram of a display device 10C according to yet another embodiment of the present invention.

[0023] Figure 7 FIG. 1 is a partially enlarged schematic diagram of a display device 10D according to an embodiment of the present invention.

[0024] Figure 8 FIG. 1 is a partially enlarged schematic diagram of a display device 10E according to another embodiment of the present invention.

[0025] Fig. 9 FIG. 1 is a partial enlarged schematic diagram of a display device 10F according to another embodiment of the present invention.

[0026] Wherein, the reference numerals are:

[0027] 10, 10A, 10B, 10C, 10D, 10E: Display device

[0028] 100: Display panel

[0029] 100-1: first display panel

[0030] 100-2: Second display panel

[0031] 110: Base

[0032] 112: Front

[0033] 114: Back

[0034] 116: Side wall

[0035] 120: Pixel array

[0036] 122: Pixel structure

[0037] 130: Chip-on-film packaging

[0038] 130r: Region

[0039] 140: Protective glue

[0040] 140a: first surface

[0041] 140b: Second surface

[0042] 140c: Connection surface

[0043] 140c-1: first sub-connection plane

[0044] 140c-2: Second sub-connection surface

[0045] 140d: Depression

[0046] 142:convex part

[0047] 144: Flat part

[0048] 150: Side wiring

[0049] d1, d2: distance

[0050] E: Conductive element

[0051] g: gap

[0052] R: Local

[0053] T:Thickness

[0054] t: glue thickness

[0055] W: Gap width

[0056] x: direction

[0057] θ, θ1, θ2: angle DETAILED DESCRIPTION

[0058] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0059] It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it may be directly on or connected to another element, or an intermediate element may also exist. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intermediate elements. As used herein, "connection" may refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may refer to the presence of other elements between two elements.

[0060] As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within an acceptable deviation range of the particular value determined by one of ordinary skill in the art, taking into account the measurement in question and the particular amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about", "approximately", or "substantially" can select a more acceptable deviation range or standard deviation depending on the optical property, etching property or other property, and can apply to all properties without a single standard deviation.

[0061] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present invention, and will not be interpreted as an idealized or overly formal meaning unless explicitly defined as such herein.

[0062] Figure 1 FIG. 1 is a top view of a display device 10 according to an embodiment of the present invention.

[0063] Figure 2 FIG. 1 is a partial enlarged schematic diagram of a display device 10 according to an embodiment of the present invention. Figure 2 correspond Figure 1 The local R.

[0064] Figure 3 FIG. 1 is a schematic three-dimensional diagram of a display panel 100 of a display device 10 according to an embodiment of the present invention. Figure 3 Omit Figure 1 and Figure 2 The protective glue 140, and Figure 1 and Figure 2 Omit Figure 3 The pixel array 120 and the side wiring 150 are shown.

[0065] Please refer to Figure 1 , the display device 10 includes at least one display panel 100. For example, in this embodiment, the display device 10 may include a plurality of display panels 100 spliced ​​together, and the plurality of display panels 100 include a first display panel 100-1 and a second display panel 100-2. However, the present invention is not limited thereto, and in other embodiments, the display device 10 may also include only one display panel 100.

[0066] Please refer to Figure 1 and Figure 3 Each display panel 100 includes a substrate 110 having a front surface 112, a back surface 114 opposite to the front surface 112, and a sidewall 116 connecting the front surface 112 and the back surface 114. For example, in this embodiment, the substrate 110 may be made of glass, quartz, organic polymer, or opaque / reflective material (e.g., wafer, ceramic, or other applicable materials), or other applicable materials.

[0067] Each display panel 100 further includes a pixel array 120 (shown in FIG. Figure 3), disposed on the front side 112 of the substrate 110. The pixel array 120 includes a plurality of pixel structures 122 arranged in an array. For example, in the present embodiment, each pixel structure 122 may include a data line (not shown), a scan line (not shown), a power line (not shown), a common line (not shown), a pixel driving circuit (not shown) and at least one light emitting diode element (not shown). The pixel driving circuit (not shown) of each pixel structure 122 may include a first transistor (not shown), a second transistor (not shown) and a capacitor (not shown), wherein a first end of the first transistor is electrically connected to the data line, a control end of the first transistor is electrically connected to the scan line, a second end of the first transistor is electrically connected to a control end of the second transistor, a first end of the second transistor is electrically connected to the power line, the capacitor is electrically connected to a second end of the first transistor and a first end of the second transistor, a second end of the second transistor is electrically connected to a first electrode of at least one light emitting diode element, and a second electrode of at least one light emitting diode element is electrically connected to the common line. However, the present invention is not limited thereto, and in other embodiments, each pixel structure 122 may also be in other forms.

[0068] Please refer to Figure 1 , Figure 2 and Figure 3 , each display panel 100 further includes a conductive element E, which is at least disposed on the side wall 116 of the substrate 110 and is electrically connected to the pixel array 120. For example, in the present embodiment, each display panel 100 further includes a plurality of side traces 150 disposed on the side wall 116 of the substrate 110, the plurality of side traces 150 are electrically connected to the pixel array 120, and the conductive element E, for example, includes the plurality of side traces 150 and a chip on film (COF) 130 bonded to the side traces 150. However, the present invention is not limited thereto, and in another embodiment, the conductive element E may also be only the plurality of side traces 150. In addition, in the present embodiment, the conductive element E is exemplified as being disposed on the side wall 116 of the substrate 110; however, the present invention is not limited thereto, and in other embodiments, the conductive element E may also extend downward from the edge of the front surface 112 of the substrate 110 to at least the side wall 116 of the substrate 110.

[0069] Please refer to Figure 1 and Figure 2Each display panel 100 further includes a protective glue 140, which is at least disposed on the side wall 116 of the substrate 110 and covers the conductive element E. The protective glue 140 has a first surface 140a, a second surface 140b, and a connecting surface 140c disposed opposite to the side wall 116 of the substrate 110, the first surface 140a is located on the conductive element E, the distance d1 between the first surface 140a and the side wall 116 of the substrate 110 is greater than the distance d2 between the second surface 140b and the side wall 116 of the substrate 110, and the connecting surface 140c is connected to the first surface 140a and the second surface 140b.

[0070] In this embodiment, the protective glue 140 includes a convex portion 142 and a flat portion 144, wherein the convex portion 142 covers the conductive element E and has a first surface 140a and a connecting surface 140c of the protective glue 140, and the flat portion 144 has a second surface 140b of the protective glue 140, and the convex portion 142 protrudes from the flat portion 144 and is connected to the flat portion 144 to define a recess 140d of the protective glue 140.

[0071] In this embodiment, the display device 10 can be selectively formed by splicing a first display panel 100-1 and a second display panel 100-2. When the first display panel 100-1 and the second display panel 100-2 are spliced, the convex portion 142 of the protective glue 140 of the first display panel 100-1 is disposed in the concave portion 140d of the protective glue 140 of the second display panel 100-2. The first surface 140a of the protective glue 140 of the first display panel 100-1 abuts against the second surface 140b of the protective glue 140 of the second display panel 100-2, the second surface 140b of the protective glue 140 of the first display panel 100-1 abuts against the first surface 140a of the protective glue 140 of the second display panel 100-2, and the connecting surface 140c of the protective glue 140 of the first display panel 100-1 is disposed next to the connecting surface 140c of the protective glue 140 of the second display panel 100-2. The first surface 140a of the protective glue 140 of the first display panel 100-1 is substantially parallel to the second surface 140b of the protective glue 140 of the second display panel 100-2. The second surface 140b of the protective glue 140 of the first display panel 100-1 is substantially parallel to the first surface 140a of the protective glue 140 of the second display panel 100-2. The direction x is substantially parallel to the sidewall 116 of the substrate 110 of the first display panel 100-1. The conductive elements E of the first display panel 100-1 and the conductive elements E of the second display panel 100-2 are alternately arranged in the direction x.

[0072] It is worth mentioning that in the present embodiment, the protrusion 142 of the protective glue 140 of the first display panel 100-1 is arranged in the recess 140d of the protective glue 140 of the second display panel 100-2. Therefore, the gap width W (i.e., the distance from the side wall 116 of the first display panel 100-1 to the side wall 116 of the second display panel 100-2) of the display device 10 spliced ​​by the first display panel 100-1 and the second display panel 100-2 can be significantly reduced, which is beneficial to the overall visual effect of the display device 10.

[0073] In the present embodiment, the first surface 140a, the second surface 140b and the connection surface 140c of the protective glue 140 of each display panel 100 can be formed by laser cutting the protective glue material (not shown). The protective glue 140 of each display panel 100 has a glue thickness t on the conductive element E, and the minimum value of the glue thickness t can be equal to the size tmin of the heat affected zone (Heat Affected Zone) of the laser, and the minimum distance from the first surface 140a of the protective glue 140 of each display panel 100 to the side wall 116 can be (tmin+T), where T is the thickness of the conductive element E. The gap width W of the display device 10 can be less than (2·tmin+2·T). Furthermore, in the present embodiment, the gap width W of the display device 10 can be less than (tmin+2·T), but the present invention is not limited thereto.

[0074] Please refer to Figure 1 and Figure 2 , the connecting surface 140c of the first display panel 100-1 and the second surface 140b are sandwiched at an angle θ1 in the material of the protective glue 140. The connecting surface 140c of the second display panel 100-2 and the second surface 140b are sandwiched at an angle θ2 in the material of the protective glue 140. In the present embodiment, the angle θ1 of the first display panel 100-1 and the angle θ2 of the second display panel 100-2 may be substantially equal. For example, in the present embodiment, the angle θ1 is substantially equal to 90°, and the angle θ2 is substantially equal to 90°. However, the present invention is not limited to this, and in other embodiments, the angle θ1 and the angle θ2 do not have to be equal, and the angle θ1 and the angle θ2 may also be other angles θ, which will be illustrated in the following paragraphs with other figures.

[0075] Please refer to Figure 1 and Figure 2 In this embodiment, the connection surface 140c of the protective glue 140 of each display panel 100 can be selectively a flat surface. However, the present invention is not limited thereto. In other embodiments, the connection surface 140c of the protective glue 140 can also be a curved surface, which can be a convex surface or a concave surface. This will be described in the following paragraphs with other figures.

[0076] It must be noted that the following embodiments use the component numbers and some contents of the previous embodiments, wherein the same number is used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can refer to the previous embodiments, and the following embodiments will not be repeated.

[0077] Figure 4 FIG. 1 is a partially enlarged schematic diagram of a display device 10A according to another embodiment of the present invention. Figure 4 The display device 10A and Figure 2 The display device 10A is similar to the display device 10 , and the difference between the two is that the angle θ1 and the angle θ2 of the display device 10A are different from the angle θ1 and the angle θ2 of the display device 10 .

[0078] Please refer to Figure 4 In this embodiment, angle θ1 and angle θ2 are also the same. Figure 2 The difference between the embodiments is that in Figure 4 In the embodiment of the present invention, the angle θ1 and the angle θ2 are greater than 0° and less than 90°. Figure 4 In the embodiment, the recess 140d of each display panel 100 has a larger width at one end away from the sidewall 116 of the substrate 110. Thus, the first display panel 100-1 and the second display panel 100-2 can be easily interlocked and maintain a small gap width W.

[0079] Figure 5 FIG. 1 is a partial enlarged schematic diagram of a display device 10B according to another embodiment of the present invention. Figure 5 The display device 10B and Figure 4 The display device 10A is similar to the display device 10B, and the difference between the two is that the angle θ1 and the angle θ2 of the display device 10B are different, and there is a gap g between the connecting surface 140c of the protective glue 140 of the first display panel 100-1 and the connecting surface 140c of the protective glue 140 of the second display panel 100-2. Figure 5 For example, in this embodiment, the angle θ1 may be greater than the angle θ2, but the present invention is not limited thereto.

[0080] Figure 6 FIG. 1 is a partial enlarged schematic diagram of a display device 10C according to yet another embodiment of the present invention. Figure 6 The display device 10C and Figure 5 The display device 10B is similar to the display device 10B, and the difference between the two is that: Figure 6 In the embodiment, the angle θ1 is smaller than the angle θ2.

[0081] Figure 7 FIG. 1 is a partially enlarged schematic diagram of a display device 10D according to an embodiment of the present invention. Figure 7 The display device 10D and Figure 2The display device 10D is similar to the display device 10, and the difference between the two is that the connection surface 140c of the display device 10D is different from the connection surface 140c of the display device 10. Figure 7 Specifically, in this embodiment, the connection surface 140c of the protective glue 140 of each display panel 100 may be a curved surface, and the curved surface may be a convex surface or a concave surface. For example, in this embodiment, the connection surface 140c of the protective glue 140 of the first display panel 100-1 may be a concave curved surface, and the connection surface 140c of the protective glue 140 of the second display panel 100-2 may be another convex curved surface.

[0082] Figure 8 FIG. 1 is a partially enlarged schematic diagram of a display device 10E according to another embodiment of the present invention. Figure 8 The display device 10E and Figure 2 The display device 10E is similar to the display device 10, and the difference between the two is that the connection surface 140c of the display device 10E is different from the connection surface 140c of the display device 10. Figure 8 Specifically, in the present embodiment, the connection surface 140c of the protective glue 140 of each display panel 100 includes a first sub-connection surface 140c-1 connected to the first surface 140a and a second sub-connection surface 140c-2 connected to the first sub-connection surface 140c-1 and the second surface 140b, wherein the first sub-connection surface 140c-1 and the second sub-connection surface 140c-2 are staggered (that is, the first sub-connection surface 140c-1 and the second sub-connection surface 140c-2 are not parallel). For example, in the present embodiment, the first sub-connection surface 140c-1 and the second sub-connection surface 140c-2 of the first display panel 100-1 can be connected to form a concave curved surface, and the first sub-connection surface 140c-1 and the second sub-connection surface 140c-2 of the second display panel 100-2 can be connected to form another convex curved surface.

[0083] Fig. 9 FIG. 1 is a partial enlarged schematic diagram of a display device 10F according to another embodiment of the present invention. Figure 8 The display device 10E and Figure 2 The display device 10 is similar to the display device 10, and the difference between the two is that: Fig. 9 In the embodiment of the present invention, the conductive elements E of the first display panel 100-1 and the conductive elements E of the second display panel 100-2 are alternately arranged in the direction x, and the conductive elements E of the first display panel 100-1 and the conductive elements E of the second display panel 100-2 partially overlap in the direction x. Fig. 9 In the embodiment of FIG. 1 , the conductive element E of the first display panel 100 - 1 has a region 130 r overlapping with the conductive element E of the second display panel 100 - 2 in the direction x.

[0084] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A display device, characterized in that: include: At least one display panel, comprising: A substrate having a front surface, a back surface opposite to the front surface, and a side wall connecting the front surface and the back surface; A pixel array is disposed on the front surface of the substrate; a conductive element, disposed at least on the sidewall of the substrate and electrically connected to the pixel array; and A protective glue is at least arranged on the side wall of the substrate and covers the conductive element, wherein the protective glue has a first surface, a second surface and a connecting surface arranged opposite to the side wall of the substrate, the first surface is located on the conductive element, the distance between the first surface and the side wall of the substrate is greater than the distance between the second surface and the side wall of the substrate, and the connecting surface is connected to the first surface and the second surface.

2. The display device according to claim 1, wherein: The connecting surface and the second surface form an angle in the material of the protective glue, and the angle is substantially equal to 90°.

3. The display device according to claim 1, wherein: The connecting surface and the second surface form an angle in the material of the protective glue, and the angle is greater than 0° and less than 90°.

4. The display device according to claim 1, wherein: The connecting surface includes a curved surface.

5. The display device according to claim 1, wherein: The connection surface includes: a first sub-connection surface connected to the first surface; and A second sub-connection surface is connected to the first sub-connection surface and the second surface, wherein the first sub-connection surface is interlaced with the second sub-connection surface.

6. The display device according to claim 1, wherein: The protective glue includes: a convex portion, covering the conductive element and having the first surface of the protective glue and the connecting surface; and A flat portion has the second surface of the protective glue, wherein the convex portion protrudes from the flat portion and is connected to the flat portion to define a recess of the protective glue.

7. The display device according to claim 6, wherein: The at least one display panel is a plurality of display panels; each display panel includes the substrate, the pixel array, the conductive element and the protective glue; the display panels include a first display panel and a second display panel, and the convex portion of the protective glue of the first display panel is arranged in the concave portion of the protective glue of the second display panel.

8. The display device according to claim 7, characterized in that: A direction is substantially parallel to the side wall of the substrate of the first display panel, and the conductive element of the first display panel and the conductive element of the second display panel partially overlap in the direction.

9. The display device according to claim 7, wherein: The connecting surface of each display panel and the second surface form an angle in the material of the protective glue, and the angle of the first display panel is substantially equal to the angle of the second display panel.

10. The display device according to claim 7, wherein: The connecting surface of each display panel and the second surface form an angle in the material of the protective glue, and the angle of the first display panel is greater than the angle of the second display panel.

11. The display device according to claim 7, wherein: The connecting surface of each display panel and the second surface form an angle in the material of the protective glue, and the angle of the first display panel is smaller than the angle of the second display panel.

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