TWI613810B - Display device - Google Patents

Abstract

A display device. The display device includes a first substrate, a second substrate, a first barrier layer, a second barrier layer, a display medium, and a metal enclosing wall. The first barrier layer is disposed on the second substrate, the second barrier layer is disposed on the first substrate, and the display medium is disposed between the first barrier layer and the second barrier layer. A metal fence is disposed between the first substrate and the second substrate, and the metal fence surrounds the display medium. The metal fence includes a first metal layer, a second metal layer, and a third metal layer. The first metal layer is located on the second barrier layer, and the first metal layer has a plurality of first openings. The second metal layer is on the first barrier layer. The third metal layer is formed between the first metal layer and the second metal layer.

Description

Display device

The disclosure is related to a display device, and more particularly to a display device with a good water and oxygen blocking effect.

With the development of display technology, various display systems are developing rapidly. Among them, organic light emitting diode displays have become one of the research focuses of display technology. Therefore, the research and design of placing organic light emitting diodes in flexible displays has also developed rapidly.

However, organic light-emitting diodes are easily oxidized by the influence of water vapor (moisture) and oxygen, thereby affecting their operation functions. In addition, based on the demand for the flexibility of the display, it is not easy to use glass frit that has a good water and oxygen blocking effect as the barrier structure. Therefore, the research on water-blocking oxygen of flexible organic light-emitting diode displays has become a considerable challenge. Therefore, how to provide a flexible organic light-emitting diode display with a good water and oxygen blocking function is one of the subjects of the efforts of related industries.

The disclosure relates to a display device. In a display device, a metal enclosure wall is located between two substrates and surrounds the display medium to form a water-blocking oxygen structure in a lateral direction, and a barrier layer located above and below the display medium can greatly Improve the water and gas blocking effect of the overall display device.

According to an embodiment of the present disclosure, a display device is provided. The display device includes a first substrate, a second substrate, a first barrier layer, a second barrier layer, a display medium, and a metal enclosing wall. The first barrier layer is disposed on the second substrate, the second barrier layer is disposed on the first substrate, and the display medium is disposed between the first barrier layer and the second barrier layer. A metal fence is disposed between the first substrate and the second substrate, and the metal fence surrounds the display medium. The metal fence includes a first metal layer, a second metal layer, and a third metal layer. The first metal layer is located on the second barrier layer, and the first metal layer has a plurality of first openings. The second metal layer is on the first barrier layer. The third metal layer is formed between the first metal layer and the second metal layer.

According to another embodiment of the present disclosure, a display device is provided. The display device includes a first substrate, a second substrate, a first barrier layer, a second barrier layer, a display medium, and a metal fence. The first barrier layer is disposed on the second substrate, the second barrier layer is disposed on the first substrate, and the display medium is disposed between the first barrier layer and the second barrier layer. A metal fence is disposed between the first substrate and the second substrate, and the metal fence surrounds the display medium. The metal fence includes a first metal layer, a second metal layer, a third metal layer, and a first co-crystallization layer. The first metal layer is on the second barrier layer, and the second metal layer is on the first barrier layer. The third metal layer is formed between the first metal layer and the second metal layer. The first eutectic layer is formed between the first metal layer and the third metal layer.

In order to have a better understanding of the above and other aspects of the present invention, preferred embodiments are described below in detail with the accompanying drawings, as follows:

100, 200, 300, 400, 500‧‧‧ display devices

110‧‧‧second substrate

120‧‧‧The first barrier layer

130‧‧‧first substrate

140‧‧‧Second barrier layer

150‧‧‧display media

160‧‧‧Metal fence

161‧‧‧first metal layer

161-1, 161-2‧‧‧ First opening

162‧‧‧First eutectic layer

163‧‧‧Second metal layer

163-1, 163-2‧‧‧ Second opening

164‧‧‧Second eutectic layer

165‧‧‧ third metal layer

170‧‧‧Third barrier layer

170e‧‧‧outer edge

180‧‧‧ filling material

191‧‧‧Color Filter

193‧‧‧Thin-film transistor layer

195‧‧‧fan-out structure

195-1‧‧‧Third opening

197‧‧‧ insulator

310‧‧‧Integrated Circuit Components

320‧‧‧ flexible cable

330‧‧‧Soldering pad

340‧‧‧Encapsulant

350‧‧‧The first functional film

360‧‧‧Second functional film

370, 380‧‧‧ inorganic barrier layer

1B-1B ’, 2-2’, 4B-4B’‧‧‧ hatching

D1, D1-1, D2, D2-1‧‧‧caliber

T1‧‧‧thickness

W1, W2‧‧‧ Section width

FIG. 1A illustrates a top view of a display device according to an embodiment of the disclosure.

Figure 1B is a schematic cross-sectional view of Figure 1A along the section line 1B-1B '.

FIG. 2 is a partial top view of the first metal layer and the second metal layer according to an embodiment of the disclosure.

Fig. 3A is a schematic sectional view of Fig. 2 along the section line 2-2 '.

3B ~ 3D are schematic cross-sectional views of some embodiments according to the disclosure.

FIG. 4A illustrates a top view of a display device according to another embodiment of the disclosure.

Figure 4B is a schematic sectional view of Figure 4A along the section line 4B-4B '.

FIG. 5 is a schematic diagram of a display device according to another embodiment of the disclosure.

FIG. 6 is a schematic diagram of a display device according to another embodiment of the disclosure.

FIG. 7 is a schematic diagram of a display device according to another embodiment of the disclosure.

According to an embodiment of the present disclosure, a display device is provided. In a display device, a metal fence is located between two substrates and surrounds the display medium to form a water blocking oxygen structure in a lateral direction, and a barrier layer located above and below the display medium can greatly improve the water blocking effect of the overall display device. . However, the examples It is used as an example only, and does not limit the scope of the present invention. In addition, the drawings in the embodiments omit some required elements to clearly show the technical features of the present invention.

Please refer to FIGS. 1A to 1B. FIG. 1A illustrates a top view of a display device according to an embodiment of the present disclosure, and FIG. 1B illustrates a schematic cross-sectional view of FIG. 1A along a section line 1B-1B '. As shown in FIGS. 1A to 1B, the display device 100 includes a first substrate 130, a second substrate 110, a first barrier layer 120, a second barrier layer 140, a display medium 150, and a metal fence ( metal enclosing wall) 160. The first barrier layer 120 is disposed on the second substrate 110, the second barrier layer 140 is disposed on the first substrate 130, and the display medium 150 is disposed between the first barrier layer 120 and the second barrier layer 140. The metal surrounding wall 160 is disposed between the first substrate 130 and the second substrate 110, and the metal surrounding wall 160 surrounds the display medium 150. Therefore, the display medium 150 can be sealed between the first substrate 130 and the second substrate 110.

In the embodiment of the disclosure, the display medium 150 may be an organic light emitting diode element or a liquid crystal layer, and the display device 100 may be an organic light emitting diode display device or a liquid crystal display device. However, the type of the display medium in this disclosure may be selected according to actual needs, and is not limited to the above.

As shown in FIGS. 1A-1B, the metal enclosure 160 includes a first metal layer 161, a second metal layer 163, and a third metal layer 165. The first metal layer 161 is located on the second barrier layer 140. The first metal layer 161 has a first opening 161-1. The second metal layer 163 is located on the first barrier layer 120. The third metal layer 165 is formed between the first metal layer 161 and the second metal layer 163.

As shown in FIGS. 1A to 1B, the second substrate 110 and the first substrate 130 are paired, and the metal surrounding wall 160 surrounds the display medium 150 to form a water blocking oxygen structure in a lateral direction. The combination of the first barrier layer 120 and the second barrier layer 140 below and above the display medium 150 respectively enables the display device to provide a water blocking oxygen effect with a water vapor transmission rate (WVTR) of 10 ⁻⁶ . In the embodiment, as shown in FIG. 1A, the metal enclosure wall 160 has a thickness T1 of about 540 to 660 micrometers (μm). For example, the thickness T1 may be about 600 micrometers.

In the embodiment, the material of the first substrate 130 and the second substrate 110 is, for example, a flexible transparent substrate and has a thickness of about 10 to 15 microns. The material is, for example, polyimide (PI), and the thickness is about 10 to 15 Microns. In the embodiment, the first barrier layer 120 and the second barrier layer 140 may be, for example, silicon nitride (SiN) or a stacked layer of silicon nitride and silicon oxide (SiN _x / SiO _x ), respectively, and have water blocking properties. Oxygen effect.

As shown in FIG. 1B, the display device 100 may further include a third barrier layer 170 formed on the display medium 150 and covering the display medium 150. The third barrier layer 170 has a water and oxygen blocking effect, which helps prevent the display medium 150 from being oxidized by the influence of moisture and oxygen. The third barrier layer 170 is, for example, silicon nitride or a stacked layer of silicon nitride and silicon oxide.

As shown in FIG. 1B, the display device 100 may further include a filling material 180. The filling material 180 is filled in the metal surrounding wall 160 and covers the display medium 150. In some embodiments, the filling material 180 has a plurality of hydrophilic functional groups adjacent to the first barrier layer 120 and the second barrier layer 140, and the filling material 180 has a plurality of hydrophobic functional groups adjacent to the display medium 150. In this way, the hydrophilic functional group makes the filling material 180 have better adhesion with the barrier layer 120/140, and the hydrophobic functional group can provide the display medium 150 with better water and oxygen blocking ability.

In the embodiment, as shown in FIGS. 1A to 1B, the first metal layer 161 may have a plurality of first openings 161-1. During the process, lightning is applied from the first substrate side When the thermally cured metal fence 160 is irradiated, the first openings 161-1 allow the laser beam to reach the material of the third metal layer 165 under the first metal layer 161.

In the embodiment, as shown in FIG. 1B, the second metal layer 163 has at least one second opening 163-1. In an embodiment, as shown in FIG. 1B, the second metal layer 163 may have a plurality of second openings 163-1.

In the embodiment, as shown in FIGS. 1A to 1B, the display device 100 may further include a color filter 191 and / or a thin film transistor layer 193 and a fan-out structure 195. The thin film transistor layer 193 is disposed between the first barrier layer 120 and the display medium 150. The fan-out structure 195 is disposed between the second substrate 110 and the second metal layer 163. The fan-out structure 195 is electrically insulated from the second metal layer 163 by an insulator 197. In an embodiment, as shown in FIG. 1B, the display medium 150 is, for example, a white organic light emitting diode, and the color filter 191 is disposed between the first substrate 130 and the display medium 150. In another embodiment, the display medium 150 is, for example, a red-green-blue (RGB) organic light-emitting diode, and the display device may not include a color filter between the first substrate 130 and the display medium 150.

In an embodiment, a material of the first metal layer 161 and a material of the second metal layer 163 may include copper, respectively. In the embodiment, the thickness of the first metal layer 161 and the thickness of the second metal layer 163 are, for example, 300 to 1000 nanometers (nm).

In some embodiments, a material of the third metal layer may include a metal, and the metal satisfies the following conditions: 1 <R _PB <2, where R _PB = (M _oxide * ρ _metal ) / (n * M _metal * ρ _oxide ), M _metal is the atomic weight of this metal, M _oxide is the molecular weight of a metal oxide of this metal, ρ _metal is the density of this metal, ρ _oxide is the density of the metal _oxide of this metal, and n is The number of atoms in a single molecule of a metal oxide of this metal.

The above formula can be rewritten as: R _PB = (V _oxide / (V _metal ), where V _metal is the molecular volume of this metal, and V _oxide is the molecular volume of the metal oxide of this metal.

In the embodiment, when the metal material of the third metal layer 165 of the metal fence 160 is oxidized by water / oxygen, since the oxidation reaction starts on the surface of the metal layer, a metal oxide coating is formed on the surface of the metal layer. When R _PB <1, the metal oxide coating will be too thin, causing the metal oxide coating to be easily broken or broken to provide protection or barrier effects. On the other hand, when R _PB > 2, the structure of the metal oxide coating will be too loose and may fall apart, which cannot provide protection or barrier effects. According to the embodiment of the disclosure, the metal used to make the third metal layer 165 satisfies the condition of 1 <R _PB <2. Therefore, when the third metal layer 165 is oxidized from the outer surface, a metal oxide layer formed on the outer surface is formed. The layers are thick enough and tight enough to provide protection and barrier effects.

Table 1 shows the selection of metals that meet the above conditions. The metals listed in Table 1 can be used as the material for the third metal layer 165.

As shown in FIG. 1B, the display device 100 may further include a flexible cable 320 and a soldering pad 330. As shown in FIG. 1B, the flexible cable 320 is joined to the fan-out structure 195 via a solder pad 330.

FIG. 2 is a partial top view of the first metal layer and the second metal layer according to an embodiment of the present disclosure, and FIG. 3A is a schematic cross-sectional view of FIG. 2 along the section line 2-2 '. In this embodiment, the same components as those in the previous embodiment are denoted by the same component numbers, and related descriptions of the same components are referred to the foregoing, and are not repeated here.

As shown in FIGS. 2 and 3A, portions of the first metal layer 161 having a cross-sectional width W1 are formed as a plurality of ribs and form a grid pattern having a plurality of first openings 161-1. pattern), some portions of the second metal layer 163 having a cross-sectional width W2 are a plurality of ribs and form a grid pattern having a plurality of second openings 163-1.

In some embodiments, as shown in FIG. 2, a cross-sectional width W1 of a rib portion of the first metal layer 161 is smaller than a cross-sectional width W2 of a rib portion of the second metal layer 163. The aperture D1 of the first opening 161-1 is larger than the aperture D2 of the second opening 163-1. In this embodiment, the cross-sectional width W1 is, for example, about 10 ± 1 micrometer, the aperture D1 of the first opening 161-1 is, for example, about 50 ± 5 micrometers, the cross-sectional width W2 is, for example, about 30 ± 3 micrometers, and the second opening 163-1 The diameter D2 is, for example, about 30 ± 3 micrometers. In this embodiment, as shown in FIG. 3A, the light transmittance per unit area of the first metal layer 161 is about 66%.

Furthermore, in the embodiment, as shown in FIG. 3A, the fan-out structure 195 has a plurality of third openings 195-1. These third openings 195-1 are located in the second openings 163-1 of the second metal layer 163. Next and corresponding to these second openings 163-1. In this embodiment, the fan-out structure 195 may have a pattern substantially the same as the second metal layer 163. For example, the fan-out structure 195 may have a grid pattern including a plurality of third openings 195-1. In other words, the fan-out structure 195 is not exposed outside the second opening 163-1 of the second metal layer 163. As such, when a laser is applied from the first substrate side to thermally cure the metal fence 160, the matching second opening 163-1 and third opening 195-1 allow the laser to heat the third metal layer 165 without being exposed to any The outgoing metal layer (for example, the fan-out structure 195) is reflected, so the heating efficiency of the laser beam can be well controlled.

Figures 3B ~ 3D are schematic cross-sectional views of some implementation examples according to the disclosure, which presents some variations of the first metal layer and the second metal layer according to Figure 3A. In this embodiment, the same components as those in the previous embodiment are denoted by the same component numbers, and related descriptions of the same components are referred to the foregoing, and are not repeated here.

In this embodiment, the structure shown in FIG. 3B has a grid pattern, and the pattern is similar to the grid pattern of the structure shown in FIG. 3A. In this embodiment, some portions of the first metal layer 161 having a cross-sectional width W1 are a plurality of ribs and form a grid pattern having two first openings 161-1 and 161-2. Some portions having a cross-sectional width W2 are a plurality of ribs and form a grid pattern having a plurality of second openings 163-1. As shown in FIG. 3B, a cross-sectional width W1 of a rib portion of the first metal layer 161 is smaller than a cross-sectional width W2 of a rib portion of the second metal layer 163. In this embodiment, as shown in FIG. 3B, the light transmittance per unit area of the first metal layer 161 is about 33%.

In the embodiment, the diameter D1 of the first opening 161-1 is substantially equal to the diameter D2 of the second opening 163-1, and the diameter D1-1 of the first opening 161-2 is smaller than the diameter D2 of the second opening 163-1. In this embodiment, the cross-sectional width W1 is, for example, about 10 ± 1 micrometer, the diameter D1 of the first opening 161-1 is, for example, about 30 ± 3 micrometers, and the diameter D1-1 of the first opening 161-2 is, for example, about 10 ± 1. The cross section width W2 is, for example, about 30 ± 3 micrometers, and the diameter D2 of the second opening 163-1 is, for example, about 30 ± 3 micrometers.

In this embodiment, the structure shown in FIG. 3C has a grid pattern, and the pattern is similar to the grid pattern of the structure shown in FIG. 3A. In this embodiment, some portions of the first metal layer 161 having a cross-sectional width W1 are a plurality of ribs and form a grid pattern having two first openings 161-1 and 161-2. Some portions having a cross-sectional width W2 are a plurality of ribs and form a grid pattern having a plurality of second openings 163-1. As shown in FIG. 3C, a cross-sectional width W1 of a portion of the first metal layer 161 is smaller than a cross-sectional width W2 of a portion of the second metal layer 163. In this embodiment, as shown in FIG. 3C, the light transmittance per unit area of the first metal layer 161 is about 50%.

In the embodiment, the diameter D1 of the first opening 161-1 is substantially equal to the diameter D2 of the second opening 163-1, and the diameter D1-1 of the first opening 161-2 is smaller than the diameter D2 of the second opening 163-1. In this embodiment, the cross-sectional width W1 is, for example, about 5 ± 1 micrometer, the diameter D1 of the first opening 161-1 is, for example, about 30 ± 3 micrometers, and the diameter D1-1 of the first opening 161-2 is, for example, about 5 ± 1. The cross section width W2 is, for example, about 30 ± 3 micrometers, and the diameter D2 of the second opening 163-1 is, for example, about 30 ± 3 micrometers.

In this embodiment, the structure shown in FIG. 3D has a grid diagram. The pattern is similar to the grid pattern of the structure shown in FIG. 3A. In this embodiment, some portions of the first metal layer 161 having a cross-sectional width W1 are a plurality of ribs and form a grid pattern having two first openings 161-1 and 161-2. Some portions having a cross-sectional width W2 are a plurality of ribs and form a grid pattern having two kinds of second openings 163-1 and 163-2. As shown in FIG. 3D, a cross-sectional width W1 of a portion of the first metal layer 161 is substantially equal to a cross-sectional width W2 of a portion of the second metal layer 163. In this embodiment, as shown in FIG. 3D, the light transmittance per unit area of the first metal layer 161 is about 50%.

In the embodiment, the diameter D1 of the first opening 161-1 is substantially equal to the diameter D2 of the second opening 163-1, and the diameter D1-1 of the first opening 161-2 is substantially equal to the diameter D2- of the second opening 163-2. 1. In this embodiment, the cross-sectional width W1 is, for example, about 5 ± 1 micrometer, the diameter D1 of the first opening 161-1 is, for example, about 30 ± 3 micrometers, and the diameter D1-1 of the first opening 161-2 is about 5 ± 1, For example, the cross-section width W2 is about 5 ± 1 μm, the diameter D2 of the second opening 163-1 is about 30 ± 3 μm, and the diameter D2-1 of the second opening 163-2 is about 5 ± 1 μm.

FIG. 4A illustrates a top view of a display device 200 according to another embodiment of the disclosure, and FIG. 4B illustrates a schematic cross-sectional view of FIG. 4A along a section line 4B-4B '. In this embodiment, the same components as those in the previous embodiment are denoted by the same component numbers, and related descriptions of the same components are referred to the foregoing, and are not repeated here.

As shown in FIGS. 4A to 4B, in the display device 200, the metal enclosure 160 may further include a first co-crystal layer 162, and the first e-crystal layer 162 is formed on the first metal layer 161 and the third metal layer. Between 165. When the first metal layer 161 and the third metal layer 165 are bonded, materials of the first metal layer 161 and the third metal layer 165 are co-crystallized to form a first eutectic layer 162.

In some embodiments of the present disclosure, the first eutectic layer 162 may have a single-layer structure or a multi-layer structure.

As shown in FIG. 4B, the metal enclosure 160 may further include a second eutectic layer 164 formed between the second metal layer 163 and the third metal layer 165. When the second metal layer 163 and the third metal layer 165 are bonded, the materials of the second metal layer 163 and the third metal layer 165 are co-crystallized to form the second eutectic layer 164.

In some embodiments of the present disclosure, the second eutectic layer 164 may have a single-layer structure or a multi-layer structure.

In one embodiment, the first metal layer 161 and the second metal layer 163 include copper, and the third metal layer 165 includes tin (Sn), tin-silver alloy (Sn-Ag), or tin-silver-bismuth alloy (Sn-Ag-Bi). Therefore, the first eutectic layer 162 and the second eutectic layer 164 are copper-tin alloy layers. In this embodiment, the first eutectic layer 162 and the second eutectic layer 164 include, for example, a hexa-copper-penta-tin alloy (Cu ₆ Sn ₅ ), which has a tighter structure than a three-copper-tin alloy (Cu ₃ Sn).

In some embodiments, the first eutectic layer 162 and the second eutectic layer 164 each have a eutectic temperature equal to or less than 230 ° C, for example, 80 to 230 ° C. Since the eutectic temperature is relatively low, the heat generated in the laser curing process will not cause damage to the display medium 150.

In some embodiments, each of the first eutectic layer 162 and the second eutectic layer 164 may have a thickness equal to or less than 5 angstroms (Å), for example, 2 to 5 angstroms. When the thickness is greater than 5 angstroms, the strength of the first eutectic layer 162 and the second eutectic layer 164 becomes weak and easily cracked. According to the embodiment of the present disclosure, the first eutectic layer 162 and / or the second eutectic layer 164 may have a thickness equal to or less than 5 angstroms and may have good uniformity. And good strength.

FIG. 5 is a schematic diagram of a display device 300 according to another embodiment of the disclosure. In this embodiment, the same components as those in the previous embodiment are denoted by the same component numbers, and related descriptions of the same components are referred to the foregoing, and are not repeated here.

As shown in FIG. 5, in the embodiment, the display device 300 may further include an inorganic barrier layer 370. The inorganic barrier layer 370 is adjacent to a side wall of the metal fence 160. In more detail, as shown in FIG. 5, the inorganic barrier layer 370 abuts the outer side wall of the metal fence 160 to prevent water vapor and oxygen from passing through the metal fence 160 and damaging the display medium 150.

In the embodiment, as shown in FIG. 5, the inorganic barrier layer 370 abuts the junction of the first metal layer 161 and the third metal layer 165 of the sidewall of the metal fence 160 and the second metal layer 163 and the third metal layer 165 Joint. Since the bonded interface is easily penetrated by water vapor and oxygen, the interface of the junction of the inorganic barrier layer 370 adjacent to the metal layer helps to prevent the display medium 150 from being damaged by the oxidation of the water vapor and oxygen.

In the embodiment, as shown in FIG. 5, the display device 300 may further include an inorganic barrier layer 380. The inorganic barrier layer 380 is adjacent to the exposed sidewall of the display device 150 and the outer edge 170 e of the third barrier layer 170. The side edge 170e is located at a junction with the display medium 150.

In some embodiments, the material of the inorganic barrier layers 370 and 380 may include a metal, an organo-silane material, an organo-titanium material, and an organo-aluminum material. Or a combination of the above. In the above-mentioned organometallic material, the organic portion includes a hydrophilic functional group and a hydrophobic functional group, and the hydrophilic functional group is used to bond to gold. It belongs to the wall 160, and the hydrophobic functional group is used to provide the effect of blocking water and oxygen.

As shown in FIG. 5, the display device 300 may further include an integrated circuit component (IC component) 310. The integrated circuit component 310 is disposed on the second substrate 110. In the embodiment, the flexible cable 320 is bonded to the second substrate 110 via a solder pad 330.

FIG. 6 is a schematic diagram of a display device 400 according to another embodiment of the disclosure. In this embodiment, the same components as those in the previous embodiment are denoted by the same component numbers, and related descriptions of the same components are referred to the foregoing, and are not repeated here.

As shown in FIG. 6, the display device 400 may further include an encapsulating glue 340 formed on the second substrate 110. In the embodiment, the encapsulant 340 has the effect of blocking water and oxygen. In the embodiment, as shown in FIG. 6, the size of the first substrate 130 is smaller than that of the second substrate 110, for example, and the encapsulant 340 covers the first substrate 130, the second substrate 110, and the metal fence 160. In the embodiment, the upper surface of the encapsulant 340 is, for example, a flat surface, which is beneficial for forming a film layer on the encapsulant 340 in a subsequent process.

As shown in FIG. 6, the display device 400 may further include a first functional film 350. Furthermore, as shown in FIG. 6, the display device 400 may optionally include a second functional film 360. The encapsulant 340 has sufficient adhesiveness so that the first functional film 350 can be adhered to the encapsulant 340 without the need for an additional adhesive layer. In the embodiment, the thickness of the first functional film 350 is, for example, about 200 to 300 microns. The second functional film 360 is disposed below the second substrate 110. In the embodiment, the thickness of the second functional film 360 is, for example, smaller than the thickness of the first functional film 350. In the embodiment, the first functional film 350 and the second functional film 360 are, for example, transparent water blocking oxygen film materials, and the material is, for example, polymethacrylate (PMMA), ethylene terephthalate (PET), or Polycarbonate (PC).

FIG. 7 is a schematic diagram of a display device 500 according to another embodiment of the disclosure. In this embodiment, the same components as those in the previous embodiment are denoted by the same component numbers, and related descriptions of the same components are referred to the foregoing, and are not repeated here.

The main difference between the display device 500 shown in FIG. 7 and the display device 400 shown in FIG. 6 is the design of the metal enclosure 160. The metal fence 160 shown in FIG. 7 adopts a design shown in FIG. 1B. Furthermore, in the display device 500, the flexible wiring 320 is bonded to the second substrate 110 via the solder pad 330.

In summary, although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

100‧‧‧ display device

110‧‧‧second substrate

120‧‧‧The first barrier layer

130‧‧‧first substrate

140‧‧‧Second barrier layer

150‧‧‧display media

160‧‧‧Metal fence

161‧‧‧first metal layer

161-1‧‧‧First opening

163‧‧‧Second metal layer

163-1‧‧‧Second opening

165‧‧‧ third metal layer

170‧‧‧Third barrier layer

180‧‧‧ filling material

191‧‧‧Color Filter

193‧‧‧Thin-film transistor layer

195‧‧‧fan-out structure

197‧‧‧ insulator

320‧‧‧ flexible cable

330‧‧‧Soldering pad

Claims (17)

A display device includes: a first substrate and a second substrate; a first barrier layer disposed on the second substrate; a second barrier layer disposed on the first substrate; a display medium, Disposed between the first barrier layer and the second barrier layer; and a metal enclosing wall disposed between the first substrate and the second substrate, the metal enclosing wall surrounding the display medium, The metal fence includes: a first metal layer on the second barrier layer, wherein the first metal layer has a plurality of first openings; a second metal layer on the first barrier layer; and A third metal layer is formed between the first metal layer and the second metal layer. The display device according to item 1 of the application, wherein the second metal layer has a plurality of second openings. The display device according to item 2 of the scope of patent application, further comprising: a thin film transistor layer disposed between the first barrier layer and the display medium; and a fan-out structure disposed on The second substrate and the second metal Between layers, wherein the fan-out structure has a plurality of third openings, the third openings are located below the second openings of the second metal layer and correspond to the second openings. The display device according to item 1 of the scope of patent application, wherein a material of the third metal layer includes a metal, and the metal satisfies the following conditions: 1 <R _PB <2, where R _PB = (M _oxide * ρ _metal ) / (n * M _metal * ρ _oxide ), M _metal is the atomic weight of the metal, M _oxide is the molecular weight of a metal oxide of the _metal , ρ _metal is the density of the metal, and ρ _oxide is the metal's The density of the metal oxide, n is the number of atoms in a single molecule of the metal oxide of the metal. The display device according to item 1 of the scope of patent application, wherein a material of the first metal layer and a material of the second metal layer include copper, respectively. The display device according to item 1 of the patent application scope further includes: an inorganic barrier layer adjacent to a side wall of the metal fence. The display device according to item 6 of the application, wherein a material of the inorganic barrier layer includes a metal, an organic silane material, an organic titanium material, an organic aluminum material, or a combination thereof. The display device according to item 1 of the scope of patent application, further comprising: a filling material filled in the metal fence and covering the display medium, wherein the filling material has a plurality of hydrophilic functional groups adjacent to the first resistance Barriers and The second barrier layer, and the filling material has a plurality of hydrophobic functional groups adjacent to the display medium. A display device includes: a first substrate and a second substrate; a first barrier layer disposed on the second substrate; a second barrier layer disposed on the first substrate; a display medium, Disposed between the first barrier layer and the second barrier layer; and a metal enclosure wall disposed between the first substrate and the second substrate, the metal enclosure wall surrounding the display medium, wherein the metal enclosure wall includes : A first metal layer on the second barrier layer; a second metal layer on the first barrier layer; a third metal layer formed on the first metal layer and the second metal layer Between; a first eutectic layer formed between the first metal layer and the third metal layer; and a second eutectic layer formed between the second metal layer and the third metal Between layers. The display device according to item 9 of the scope of patent application, wherein the first eutectic layer and the second eutectic layer each have an eutectic temperature of 140-230 ° C. The display device according to item 9 of the scope of patent application, wherein the first eutectic layer and the second eutectic layer each have a thickness of 2 to 5 angstroms. The display device according to item 9 of the scope of patent application, further comprising: a thin film transistor layer disposed between the first barrier layer and the display medium; and a fan-out structure disposed between the second substrate and the display substrate. Between the second metal layers. The display device according to item 9 of the scope of patent application, wherein a material of the third metal layer includes a metal, and the metal satisfies the following conditions: 1 <R _PB <2, where R _PB = (M _oxide * ρ _metal ) / (n * M _metal * ρ _oxide ), M _metal is the atomic weight of the metal, M _oxide is the molecular weight of a metal oxide of the _metal , ρ _metal is the density of the metal, and ρ _oxide is the The density of the metal oxide, n is the number of atoms in a single molecule of the metal oxide of the metal. The display device according to item 9 of the scope of patent application, wherein a material of the first metal layer and a material of the second metal layer include copper, respectively. The display device according to item 9 of the scope of patent application, further comprising: an inorganic barrier layer adjacent to a side wall of the metal fence. The display device according to item 15 of the scope of patent application, wherein a material of the inorganic barrier layer includes a metal, an organic silane material, an organic titanium material, an organic aluminum material, or a combination thereof. The display device according to item 9 of the scope of patent application, further comprising: a filling material filled in the metal fence and covering the display medium, wherein the filling material has a plurality of hydrophilic functional groups adjacent to the first resistance The barrier layer and the second barrier layer, and the filling material has a plurality of hydrophobic functional groups adjacent to the display medium.