Patent Description:
If metal traces extending to the peripheral region of an electronic device are not properly protected, they are likely to be corroded under the reaction of moisture or oxygen, thereby affecting the electrical performance of the elements in the electronic device or the display quality of the electronic device. Therefore, how to provide the metal traces in the peripheral region with proper protection has become one of the research focuses of researchers in the field. <CIT> discloses a display apparatus including a substrate with a display area displaying an image and a peripheral area outside the display area, a main wiring and an auxiliary wiring disposed in an identical layer in the peripheral area, the main wiring being disposed closer to the display area than the auxiliary wiring, a dam configured to cover at least a part of the main wiring, the auxiliary wiring being spaced apart from the dam, and a connecting wiring configured to connect the main wiring to the auxiliary wiring, and a thin-film encapsulation layer configured to seal the display area and the peripheral area. <CIT>discloses a display device production method for producing a display device including a light emitting element in an active region and a terminal in a non-active region. The display device production method includes arranging a first mask overlapping with an electrode region of the light emitting element and a second mask overlapping with the terminal, on a conductive film that is arranged in the active region and the non-active region and that covers the terminal, and etching the conductive film. <CIT> discloses a display device including a display panel with a substrate, pixels provided on the substrate, and first lines connected to the pixels, the display device having a bending area where the display panel is bent. The display panel also includes a chip on film overlapping with a portion of the display panel and having second lines, an anisotropic conductive film provided between the chip on film and the display panel connecting the first lines and the second lines, and a coating layer covering the bending area and one end of the chip on film.

The present invention is provided by the appended claims. The following disclosure serves a better understanding of the present invention. The invention provides an electronic device capable of having good display quality or electrical performance.

According to the invention, there is provided an electronic device as recited in claim <NUM>.

Based on the above, in the embodiments of the disclosure, the first metal layer extends into and ends in the protrusion structure. With the proper protection provided by the protrusion structure to the first metal layer, the corrosion probability of the first metal layer is reduced. Therefore, the electronic device of the disclosure is capable of having good display quality or electrical performance.

In order to make the aforementioned features and advantages of the disclosure comprehensible, embodiments accompanied with drawings are described in detail below.

The disclosure may be understood by referring to the following detailed description with reference to the accompanying drawings. It is noted that for comprehension of the reader and simplicity of the drawings, in the drawings of the disclosure, only a part of the electronic device/ display device is shown, and specific components in the drawings are not necessarily drawn to scale. Moreover, the quantity and the size of each component in the drawings are only schematic and are not intended to limit the scope of the disclosure. For example, the relative size and thickness and location of layers, regions, and/or structures may be reduced or enlarged for clarity.

Throughout the specification and the appended claims of the disclosure, certain terms are used to refer to specific components. Those skilled in the art should understand that electronic device manufacturers may probably use different names to refer to the same components. This specification is not intended to distinguish between components that have the same function but different names. In the following specification and claims, the terms "including", "containing", "having", etc., are open-ended terms, so they should be interpreted to mean "including but not limited to.

In the following embodiments, wordings used to indicate directions, such as "up," "down," "front," "back," "left," and "right," merely refer to directions in the accompanying drawings. Therefore, the directional wordings are used to illustrate rather than limit the disclosure. It should be understood that when a component or a film layer is described as being "on" or "connected to" another component or film layer, it may be directly on or connected to the another component or film layer, or there is an intervening component or film layer therebetween (an indirect situation). When a component is described as being "directly on" or "directly connected" to another component or film layer, there is no intervening component or film layer therebetween.

The terms such as "about", "equal", "same", "substantially", or "approximately" are generally interpreted as being within a range of plus or minus <NUM>% of a given value or range, or as being within a range of plus or minus <NUM>%, plus or minus <NUM>%, plus or minus <NUM>%, plus or minus <NUM>%, or plus or minus <NUM>% of the given value or range. In addition, the term "a given range is between the first value and the second value" or the term "a given value falls in the range between the first value and the second value", both mean the given range includes the first value, the second value, and values between the two values.

In some embodiments of the disclosure, terms such as "connect" and "interconnect" with respect to bonding and connection, unless specifically defined, may refer to two structures that are in direct contact with each other, or may refer to two structures that are indirectly in contact with each other, wherein there are other structures set between these two structures. In addition, the terms that describe joining and connecting may apply to the case where both structures are movable or both structures are fixed. In addition, the term "electrically connected" or "coupling" involves any direct and indirect electrical connection means.

The electronic device in the disclosure may include a display device, an antenna device, a sensing device, a light-emitting device, or a tiling device, but the disclosure is not limited thereto. The electronic device may be a bendable or flexible electronic device. The electronic device may, for example, include liquid crystals, light-emitting diodes (LEDs), or quantum dots (QDs). The light-emitting diodes may include, for example, organic light-emitting diodes (OLEDs), mini LEDs, micro LEDs, or quantum dot light-emitting diodes (QLEDs, QDLEDs), fluorescence, phosphors, other suitable materials, or a combination thereof, but the disclosure is not limited thereto. A display device is configured as an electronic device to illustrate the content of the disclosure in the following, but the disclosure is not limited thereto.

The display device of the disclosure may be any type of display device, such as a self-luminous display device or a non-self-luminous display device. The self-luminous display device may include light-emitting diodes, a light conversion layer, other suitable materials, or a combination thereof, but the disclosure is not limited thereto. The light conversion layer may include a wavelength conversion material and/or a light filtering material. The light conversion layer may include, for example, fluorescence, phosphors, quantum dots, other suitable materials, or a combination thereof, but the disclosure is not limited thereto. The non-self-luminous display device may include liquid crystals, but the disclosure is not limited thereto. An organic light-emitting diode (OLED) display device is configured as a display device to illustrate the content of the disclosure in the following, but the disclosure is not limited thereto.

<FIG> is a schematic top view of part of an electronic device according to an embodiment of the disclosure falling within the scope of the invention. Referring to <FIG>, an electronic device <NUM> has a display region R1 and a peripheral region R2. The peripheral region R2 is located on at least one side of the display region R1. For example, the peripheral region R2 may be located on one or multiple sides of the display region R1. Taking an organic light-emitting diode (OLED) display device as an example, a plurality of organic light-emitting diodes (OLEDs) E may be disposed in the display region R1 of the electronic device <NUM>. The plurality of OLEDs E are arranged in an array to provide display images. In some embodiments, the display region R1 may be defined as a region displaying images. In detail, the display region R1 is a region defined by the connection of the outermost ends of the OLEDs E disposed at the edge (shown as the dotted line in <FIG>). A plurality of metal traces (not shown) in the electronic device <NUM> extend from the display region R1 into the peripheral region R2. The plurality of OLEDs E are electrically connected to external circuits through the plurality of metal traces. A plurality of protrusion structures (e.g., a protrusion structure PI and a protrusion structure PO) are disposed in the peripheral region R2 of the electronic device <NUM>. The plurality of the protrusion structures may serve as a barrier for the filling materials in the electronic device <NUM> to reduce the probability of the filling materials overflowing during packaging. The protrusion structure PI is located between the protrusion structure PO and the display region R1. In the following embodiments, for ease of description, the protrusion structure PI closer to the display region R1 of the electronic device <NUM> is referred to as an inner protrusion structure, and the protrusion structure PO farther from the display region R1 of the electronic device <NUM> is referred to as a protrusion structure.

The seven embodiments of the electronic device in the disclosure are illustrated with reference to <FIG> in below. However, note that the seven embodiments are only for illustration and are not intended to limit the implemented embodiments of the electronic device in the disclosure. In the following embodiments, the same or similar elements will be designated by the same or similar reference numerals, and descriptions thereof will be omitted. In addition, the terms such as "first" and "second" mentioned in the specification or the claims are only used to name discrete elements or to distinguish different embodiments or scopes and are not intended to limit the upper or lower limit of the number of the elements, nor are they intended to limit the manufacturing order or disposition order of the elements.

<FIG> are respectively seven cross-sectional schematic views of the section I-I' in <FIG>. The seven cross-sectional schematic views schematically illustrate the details of the protrusion structure and the inner protrusion structure in the peripheral region of the electronic device respectively. <FIG> are enlarged views of the protrusion structures in <FIG> respectively. <FIG> are enlarged views of the inner protrusion structures in <FIG> respectively.

Referring to <FIG>, <FIG>, an electronic device 1A according to the invention includes a substrate <NUM>, a first metal layer <NUM> disposed on the substrate <NUM>, and a protrusion structure <NUM> disposed on the substrate <NUM> and located in the peripheral region R2.

The substrate <NUM> carries the first metal layer <NUM> and the protrusion structure <NUM>. In some embodiments, the substrate <NUM> may include a rigid substrate or a flexible substrate. In some embodiments, the substrate <NUM> may include a light-transmitting substrate or a non-light-transmitting substrate. In some embodiments, the substrate <NUM> may be a single-layered substrate or a composite substrate.

In the embodiment, the substrate <NUM> includes, for example, a first substrate <NUM>, a second substrate <NUM>, and an intermediate layer <NUM>. The second substrate <NUM> is located between the first metal layer <NUM> and the first substrate <NUM>, and the intermediate layer <NUM> is located between the first substrate <NUM> and the second substrate <NUM>. The material of the first substrate <NUM> and the second substrate <NUM> includes, for example, a flexible material, such as polyimide (PI). The material of the intermediate layer <NUM> includes, for example, silicon oxide or silicon nitride. In some embodiments, a thickness T100 of the first substrate <NUM> may range from <NUM> to <NUM> (<NUM> ≦ thickness T100 ≦ <NUM>), a thickness T102 of the second substrate <NUM> may range from <NUM> to <NUM> (<NUM> ^thickness T102 ≦ <NUM>), a thickness T104 of the intermediate layer <NUM> may range from <NUM> to <NUM> (<NUM> ≦ thickness T104 ≦ <NUM>), but the disclosure is not limited thereto. In the embodiment, the thickness T100 of the first substrate <NUM>, the thickness T102 of the second substrate <NUM>, and the thickness T104 of the intermediate layer <NUM> are, for example, <NUM>, <NUM>, and <NUM> in the order. In the specification, the thickness of the film layer refers to the maximum thickness of the film layer in the normal direction DT1 (or the thickness direction) of the substrate <NUM>. However, the number, type, stacking sequence, material, thickness, etc. of the film layers of the substrate <NUM> may be changed according to requirements, and the disclosure is not limited thereto. In some embodiments, the thickness T102 of the second substrate <NUM> may be less than or equal to the thickness T100 of the first substrate <NUM>.

The first metal layer <NUM> is adapted to transmit signals. Taking an OLED display device as an example, the first metal layer <NUM> may be a patterned metal layer. For example, the first metal layer <NUM> may include a plurality of bottom electrodes (not shown) of the plurality of OLEDs E located in the display region R1 (see <FIG>), but the disclosure is not limited thereto. The first metal layer <NUM> may be a single metal layer or a stack of metal layers. In some embodiments, the thickness of the first metal layer <NUM> may range from <NUM> to <NUM> (<NUM> ≦the thickness of the first metal layer <NUM> ≦ <NUM>), or from <NUM> to <NUM> (<NUM> ≦the thickness of the first metal layer <NUM> ≦ <NUM>), but the disclosure is not limited thereto. In the embodiment, the first metal layer <NUM> includes, for example, three conductive layers. The three conductive layers are sequentially formed on the substrate <NUM> along the normal direction DT1 of the substrate <NUM>. The materials of the three conductive layers are, for example, molybdenum, aluminum, and molybdenum in the order or titanium, aluminum, and titanium in the order. In addition, the thicknesses of the three conductive layers are, for example, <NUM>, <NUM>, and <NUM> in the order. In some embodiments, the thicknesses of the three conductive layers of the first metal layer <NUM> are respectively the maximum thickness in the normal direction DT1, and a relatively flat portion of the first metal layer <NUM> may be selected for measurement. However, the number, type, stacking sequence, material or thickness of the film layers of the first metal layer <NUM> may be changed according to requirements, and the disclosure is not limited thereto.

The first metal layer <NUM> extends into and ends in the protrusion structure <NUM>. As shown in <FIG>, the first metal layer <NUM> extends into the protrusion structure <NUM>, for example, from the inside (e.g., the display region R1) of the substrate <NUM> toward the edge (e.g., the peripheral region R2) of the substrate <NUM>, and a side of the first metal layer <NUM> closer to the edge of the substrate <NUM> is located in the protrusion structure <NUM> and may have a distance from the outer edge S12P of the protrusion structure <NUM>.

The protrusion structure <NUM> may include at least one organic insulating layer. In the embodiment of the disclosure, the protrusion structure <NUM> is capable of providing the first metal layer <NUM> with proper protection and reduces the corrosion probability of the first metal layer <NUM>, and the electronic device 1A may have good display quality or electrical performance. If the first metal layer <NUM> extending into the protrusion structure <NUM> is too close to the outer edge S12P of the protrusion structure <NUM>, the corrosion probability of the first metal layer <NUM> may be increased. Conversely, if the first metal layer <NUM> extending into the protrusion structure <NUM> is too close to the inner edge S12N of the protrusion structure <NUM>, the protection may be insufficient due to positioning errors. In some embodiments (see <FIG>), a width W1 of the protrusion structure <NUM> and the distance G1 between the first metal layer <NUM> and the outer edge S12P of the protrusion structure <NUM> may satisfy the relationship of <NUM> ≦G1/W1 ≦ <NUM> to improve the protection provided by the protrusion structure <NUM> to the first metal layer <NUM>. In some embodiments, under any cross section of the protrusion structure <NUM> in the normal direction DT1 of the substrate <NUM>, the width W1 is defined as the maximum width of the protrusion structure <NUM> in the direction DT2, and the distance G1 is defined as the maximum distance between the first metal layer <NUM> and the outer edge S12P of the protrusion structure <NUM> in the direction DT2. The direction DT2 is perpendicular to the normal direction DT1 of the substrate <NUM>.

According to different requirements, the electronic device 1A may also include other elements or film layers. In the embodiment, the electronic device 1A further includes a first inorganic insulating layer <NUM>, a second inorganic insulating layer <NUM>, an inorganic insulating layer <NUM>, an organic insulating layer <NUM>, a second metal layer <NUM>, and a third metal layer <NUM>. In addition, the protrusion structure <NUM> includes a first organic insulating layer <NUM>, a second organic insulating layer <NUM>, and a third organic insulating layer <NUM>.

The first inorganic insulating layer <NUM>, the second metal layer <NUM>, the first organic insulating layer <NUM>, the third metal layer <NUM>, the third organic insulating layer <NUM>, the first metal layer <NUM>, the second organic insulating layer <NUM>, and the second inorganic insulating layer <NUM> are, for example, sequentially disposed on the substrate <NUM>. The first inorganic insulating layer <NUM> is located between the first organic insulating layer <NUM> and the substrate <NUM>. The second metal layer <NUM> is located between the first inorganic insulating layer <NUM> and the first organic insulating layer <NUM>. The first organic insulating layer <NUM> is located between the second metal layer <NUM> and the third metal layer <NUM>. The third metal layer <NUM> is located between the first organic insulating layer <NUM> and the third organic insulating layer <NUM>. The third organic insulating layer <NUM> is located between the third metal layer <NUM> and the first metal layer <NUM>. The first metal layer <NUM> is located between the third organic insulating layer <NUM> and the second organic insulating layer <NUM>. The second organic insulating layer <NUM> is located between the first metal layer <NUM> and the second inorganic insulating layer <NUM>. The second inorganic insulating layer <NUM> is disposed on the second organic insulating layer <NUM> and the first inorganic insulating layer <NUM>. The protrusion structure <NUM> is located between the second inorganic insulating layer <NUM> and the first inorganic insulating layer <NUM>.

The first organic insulating layer <NUM>, the second organic insulating layer <NUM>, and the third organic insulating layer <NUM> may include the same or different materials. For example, the materials of the first organic insulating layer <NUM>, the second organic insulating layer <NUM>, and the third organic insulating layer <NUM> may include acrylic resin or photosensitive resin, but the disclosure is not limited thereto. In the embodiment, the first organic insulating layer <NUM>, the second organic insulating layer <NUM>, and the third organic insulating layer <NUM> include, for example, the same or similar materials, so there may be no interface among the first organic insulating layer <NUM>, the second organic insulating layer <NUM>, and the third organic insulating layer <NUM>. Since moisture and oxygen may invade along the interface between different materials, the first metal layer <NUM> extending into the protrusion structure <NUM> is surrounded by the second organic insulating layer <NUM> and the third organic insulating layer <NUM> include the same or similar material, and the third metal layer <NUM> extending into the protrusion structure <NUM> is surrounded by the first organic insulating layer <NUM> and the third organic insulating layer <NUM> include the same or similar material, so that the corrosion probability of the first metal layer <NUM> and the third metal layer <NUM> may be reduced.

The first inorganic insulating layer <NUM> and the second inorganic insulating layer <NUM> may include the same or different materials. For example, the material of the first inorganic insulating layer <NUM> and the second inorganic insulating layer <NUM> may include oxide or nitride, but the disclosure is not limited thereto. Since the inorganic insulating layer has a better ability in blocking moisture and oxygen than the organic insulating layer, surrounding the protrusion structure <NUM> with the second inorganic insulating layer <NUM> and the first inorganic insulating layer <NUM> may improve the effect of blocking moisture and oxygen, thereby reducing the corrosion probability of the metal layers (including the first metal layer <NUM>, the second metal layer <NUM>, and the third metal layer <NUM>). In some embodiments, the first inorganic insulating layer <NUM> and the second inorganic insulating layer <NUM> may include the same or similar materials, so there may be no interface between the first inorganic insulating layer <NUM> and the second inorganic insulating layer <NUM>, and thereby the corrosion probability of the metal layers due to moisture and oxygen invading the protrusion structure <NUM> from between the first inorganic insulating layer <NUM> and the second inorganic insulating layer <NUM> may be reduced. In some embodiments, at least one of the first inorganic insulating layer <NUM> and the second inorganic insulating layer <NUM> may be a stack of multiple inorganic insulating layers.

The second metal layer <NUM> is adapted to transmit signals. Taking an OLED display device as an example, the second metal layer <NUM> may be a patterned metal layer. For example, the second metal layer <NUM> may include a plurality of data lines (not shown) located in the display region R1 (see <FIG>), and a plurality of sources and a plurality of drains of a plurality of active elements (not shown). However, the disclosure is not limited thereto. The second metal layer <NUM> may be a single metal layer or a stack of metal layers. In some embodiments, the thickness of the second metal layer <NUM> may range from <NUM> to <NUM> (<NUM> ≦ the thickness of the second metal layer <NUM> ≦ <NUM>), or from <NUM> to <NUM> (<NUM> ≦the thickness of the second metal layer <NUM> ≦ <NUM>), but the disclosure is not limited thereto. In the embodiment, the second metal layer <NUM> includes, for example, three conductive layers. The three conductive layers are sequentially formed on the substrate <NUM> along the normal direction DT1 of the substrate <NUM>. The materials of the three conductive layers are, for example, molybdenum, aluminum, and molybdenum in the order or titanium, aluminum, and titanium in the order. In addition, the thicknesses of the three conductive layers are, for example, <NUM>, <NUM>, and <NUM> in the order. In some embodiments, the thicknesses of the three conductive layers of the second metal layer <NUM> are respectively the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. However, the number, type, stacking sequence, material or thickness of the film layers of the second metal layer <NUM> may be changed according to requirements, and the disclosure is not limited thereto. In some embodiments, the thickness T2 of the second metal layer <NUM> may be greater than the thickness T1 of the first metal layer <NUM> to reduce impedance or improve the performance of signal transmission.

The second metal layer <NUM> extends into and ends in the protrusion structure <NUM>. As shown in <FIG> and <FIG>, the second metal layer <NUM> extends into the protrusion structure <NUM>, for example, from the inside (e.g., the display region R1) of the substrate <NUM> toward the edge (e.g., the peripheral region R2) of the substrate <NUM>, one side of the second metal layer <NUM> close to the edge of the substrate <NUM> is located in the protrusion structure <NUM>, and the second metal layer <NUM> has a distance G2 from the outer edge S12P of the protrusion structure <NUM>. The interface between different materials is susceptible to the intrusion of moisture and oxygen, and the second metal layer <NUM> is disposed between the first inorganic insulating layer <NUM> and the first organic insulating layer <NUM> include different materials, so compared to the first metal layer <NUM>, the second metal layer <NUM> is farther away from the outer edge S12P of the protrusion structure <NUM> (i.e., G2 is greater than G1) to improve the protection (the effect of blocking moisture and oxygen) of the second metal layer <NUM>.

The third metal layer <NUM> is adapted to transmit signals, and the configuration of the third metal layer <NUM> contributes to improving the flexibility or elasticity of circuit design. Taking an OLED display device as an example, the third metal layer <NUM> may be a patterned metal layer. For example, the third metal layer <NUM> may include circuits for specific functions, such as reference signal lines, power lines, or ground lines, but the disclosure is not limited thereto. The third metal layer <NUM> may be a single metal layer or a stack of metal layers. In some embodiments, the thickness of the third metal layer <NUM> may range from <NUM> to <NUM> (<NUM> ≦the thickness of the third metal layer <NUM> ≦ <NUM>), or from <NUM> to <NUM> (<NUM> ≦the thickness of the third metal layer <NUM> ≦ <NUM>), but the disclosure is not limited thereto. In the embodiment, the third metal layer <NUM> includes, for example, three conductive layers. The three conductive layers are sequentially formed on the substrate <NUM> along the normal direction DT1 of the substrate <NUM>. The materials of the three conductive layers are, for example, molybdenum, aluminum, and molybdenum in the order or titanium, aluminum, and titanium in the order. In addition, the thicknesses of the three conductive layers are, for example, <NUM>, <NUM>, and <NUM> in the order. In some embodiments, the thicknesses of the three conductive layers of the third metal layer <NUM> are respectively the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. However, the number, type, stacking sequence, material or thickness of the film layers of the third metal layer <NUM> may be changed according to requirements, and the disclosure is not limited thereto. In some embodiments, the thickness T3 of the third metal layer <NUM> may be greater than the thickness T1 of the first metal layer <NUM> to reduce impedance or improve the performance of signal transmission.

The third metal layer <NUM> extends into and ends in the protrusion structure <NUM>. As shown in <FIG> and <FIG>, the third metal layer <NUM> extends into the protrusion structure <NUM>, for example, from the inside (e.g. the display region R1) of the substrate <NUM> toward the edge (e.g., the peripheral region R2) of the substrate <NUM>, and a side of the third metal layer <NUM> closer to the edge of the substrate <NUM> is located in the protrusion structure <NUM> and may have a distance G3 from the outer edge S12P of the protrusion structure <NUM>. In the embodiment, G3 is greater than G1, but the disclosure is not limited thereto.

The electronic device 1A may further include an inner protrusion structure <NUM>. The inner protrusion structure <NUM> is disposed on the substrate <NUM> and located in the peripheral region R2. The protrusion structure <NUM> is closer to the edge of the substrate <NUM> than the inner protrusion structure <NUM>, and the protrusion structure <NUM> may have a distance G from the inner protrusion structure <NUM>. The inner protrusion structure <NUM> further includes at least one organic insulating layer. In the embodiment, the inner protrusion structure <NUM> includes, for example, the second organic insulating layer <NUM> and the third organic insulating layer <NUM>, but the disclosure is not limited thereto. The first metal layer <NUM>, the second metal layer <NUM>, and the third metal layer <NUM> are located between the second inorganic insulating layer <NUM> and the first inorganic insulating layer <NUM>. As shown in <FIG>, the first metal layer <NUM> is in contact with the third metal layer <NUM> between the protrusion structure <NUM> and the inner protrusion structure <NUM>, and the third metal layer <NUM> is in contact with the second metal layer <NUM> between the protrusion structure <NUM> and the inner protrusion structure <NUM>. In the inner protrusion structure <NUM>, the second metal layer <NUM> and the third metal layer <NUM> are in contact, the first metal layer <NUM> and the third metal layer <NUM> are partially separated by the third organic insulating layer <NUM>, and the first metal layer <NUM> is located between the second organic insulating layer <NUM> and the third organic insulating layer <NUM>.

The related parameters of each film layer in <FIG>, <FIG> are listed in Table <NUM>. However, note that the values in Table <NUM> only represents an embodiment under the framework of <FIG>, and changes and modifications made in accordance with the claims still fall within the scope of the invention.

The related parameters in Table <NUM> are illustrated as follows:.

Referring to <FIG>, <FIG>, the main differences between an electronic device 1B, which falls within the scope of the invention, and the electronic device 1A in <FIG>, <FIG> are as follows.

In the electronic device 1B, the thickness T100 of the first substrate <NUM>, the thickness T102 of the second substrate <NUM>, and the thickness T104 of the intermediate layer <NUM> are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto.

The first metal layer <NUM> is a single metal layer, and the thickness T1 of the first metal layer <NUM> is <NUM>, but the disclosure is not limited thereto. In some embodiments, the thickness T1 of the first metal layer <NUM> is the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. In the embodiment, the first metal layer <NUM> includes a first portion P11 and a second portion P12. The opposite ends of the first portion P11 respectively are located in the protrusion structure <NUM> and the inner protrusion structure <NUM>. The second portion P12 extends into the inner protrusion structure <NUM> and ends in the inner protrusion structure <NUM>, and the second portion P12 and the first portion P11 are separated in the inner protrusion structure <NUM>. In other words, the second portion P12 and the first portion P11 are disconnected (separated) in the inner protrusion structure <NUM> rather than connected. Therefore, when the first metal layer <NUM> in the protrusion structure <NUM> is corroded, the occurrence of the corrosion spreading through the first metal layer <NUM> to the display region R1 (see <FIG>) is reduced.

The second metal layer <NUM> includes three conductive layers, and the thicknesses of the three conductive layers along the normal direction DT1 are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto. In some embodiments, the thicknesses of the three conductive layers of the second metal layer <NUM> respectively are the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. In the embodiment, the second metal layer <NUM> includes a first portion P1 and a plurality of second portions P2 extending into the protrusion structure <NUM> and ending in the protrusion structure <NUM>. The plurality of second portions P2 are separated from the first portion P1 and are arranged from the first portion P1 toward the edge of the substrate <NUM>. Among the plurality of second portions P2, the second portion P2 closest to the edge of the substrate <NUM> overlaps the protrusion structure <NUM> in the normal direction DT1 of the substrate <NUM>. In other words, the second portion P2 closest to the edge of the substrate <NUM> does not extend to the outside of the protrusion structure <NUM>, which reduces the corrosion of the second metal layer <NUM>.

The third metal layer <NUM> includes three conductive layers, and the thicknesses of the three conductive layers along the normal direction DT1 are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto. In some embodiments, the thicknesses of the three conductive layers of the third metal layer <NUM> respectively are the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement.

The electronic device 1B further includes a fourth metal layer <NUM>. The fourth metal layer <NUM> is separated from the second metal layer <NUM> through the first inorganic insulating layer <NUM>. The fourth metal layer <NUM> is adapted to transmit signals. Taking an OLED display device as an example, the fourth metal layer <NUM> may be a patterned metal layer and may include a plurality of patterns 19P. For example, the fourth metal layer <NUM> may include a plurality of scan lines (not shown) in the display region R1 (see <FIG>), a plurality of gates of a plurality of active elements (not shown), and the plurality of the patterns 19P located in the peripheral region R2, but the disclosure is not limited thereto. In some embodiments, the protrusion structure <NUM> may overlap at least part of the plurality of the patterns 19P in the normal direction DT1, but the disclosure is not limited thereto. The fourth metal layer <NUM> may be a single metal layer or a stack of metal layers. For the description of the stack of metal layers, refer to the foregoing, and it is not iterated.

The related parameters of each film layer in <FIG>, <FIG> are listed in Table <NUM>. However, note that the values in Table <NUM> only represent an embodiment under the framework of <FIG>, but changes and modifications made in accordance with the claims still fall within the scope of the invention.

In Table <NUM>, WG is the maximum distance from the separation part between the first portion P11 of the first metal layer <NUM> and the third metal layer <NUM> to the separation part between the second portion P12 of the first metal layer <NUM> and the third metal layer <NUM> in the direction DT2. In the embodiment, the protrusion structure <NUM> has a step-like descending edge (as shown in <FIG>) close to the outer edge S12P. In other words, the included angle between the edge extension line of the protrusion structure <NUM> and the substrate <NUM> appears substantially different. θ1' is the included angle between the second inorganic insulating layer <NUM> at the step-like descending edge of the protrusion structure <NUM> and the substrate <NUM>, or θ1' may be regarded as the included angle between the extension line of the second inorganic insulating layer <NUM> at the step-like descending edge of the protrusion structure <NUM> and the substrate <NUM>.

For the description of other related parameters, refer to the foregoing, and it is not iterated.

Referring to <FIG>, <FIG>, the main differences between the electronic device 1C, which does not fall within the scope of the invention, and the electronic device 1B in <FIG>, <FIG> are as follows.

In the electronic device 1C, the thickness T100 of the first substrate <NUM>, the thickness T102 of the second substrate <NUM>, and the thickness T104 of the intermediate layer <NUM> are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto.

The first metal layer <NUM> is a single metal layer, and the thickness T1 of the first metal layer <NUM> is <NUM>, but the disclosure is not limited thereto. In some embodiments, the thickness T1 of the first metal layer <NUM> is the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. The second metal layer <NUM> includes three conductive layers, and the thicknesses of the three conductive layers along the normal direction DT1 are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto. In some embodiments, the thicknesses of the three conductive layers of the second metal layer <NUM> respectively are the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. In the embodiment, the number of the second portion P2 of the second metal layer <NUM> is one, but the disclosure is not limited thereto. In addition, the electronic device 1C does not include the third metal layer <NUM> in <FIG>, <FIG>. In addition, the protrusion structure 12C includes the first organic insulating layer <NUM> and the second organic insulating layer <NUM> but does not include the third organic insulating layer <NUM> in <FIG>, <FIG>, and the first metal layer <NUM> extending into the protrusion structure 12C is located between the second organic insulating layer <NUM> and the first organic insulating layer <NUM>. Furthermore, the inner protrusion structure 18C includes the second organic insulating layer <NUM> but does not include the third organic insulating layer <NUM> in <FIG>, <FIG>, and the entire first metal layer <NUM> extending into the inner protrusion structure 18C is in contact with the second metal layer <NUM>. Similar to <FIG>, the electronic device 1C may include the fourth metal layer <NUM> having the plurality of the patterns 19P. In the embodiment, the protrusion structure 12C may overlap part of the patterns 19P in the normal direction DT1 and does not overlap another part of the patterns 19P in the normal direction DT1, but the disclosure is not limited thereto.

The related parameters of each film layer in <FIG>, <FIG> are listed in Table <NUM>. However, note that the values in Table <NUM> only represent an embodiment under the framework of <FIG>, but simple equivalent changes and modifications made in accordance with this specification or claims still fall within the scope of the disclosure.

In Table <NUM>, D2' is the maximum distance of the orthographic projection of the second metal layer <NUM> that is not in contact with the first metal layer <NUM> in the protrusion structure 12C on the substrate <NUM> in the direction DT2. In the embodiment, the protrusion structure <NUM> close to the outer edge S12P and close to the inner edge S12N respectively have a step-like descending edge (as shown in <FIG>). In other words, the top and the bottom of the protrusion structure <NUM> are roughly distinguished according to the step-like descending edge. The top roughly corresponds to the second organic insulating layer <NUM>, and the bottom roughly corresponds to the first organic insulating layer <NUM>, but the disclosure is not limited thereto. D4N is the minimum distance between the inner edge of the top of the protrusion structure 12C and the inner edge S12N of the bottom of the protrusion structure 12C in the direction DT2. D4P is the minimum distance between the outer edge of the top of the protrusion structure 12C and the outer edge S12P of the bottom of the protrusion structure 12C in the direction DT2. Θ3 is the included angle (referred to as the third included angle) between the second inorganic insulating layer <NUM> and the second metal layer <NUM> in the protrusion structure <NUM>. For the description of other related parameters, refer to the foregoing, and it is not iterated.

Referring to <FIG>, <FIG>, the main differences between an electronic device 1D, which does not fall within the scope of the invention, and the electronic device 1C in <FIG>, <FIG> are as follows.

In the electronic device 1D, the thickness T100 of the first substrate <NUM>, the thickness T102 of the second substrate <NUM>, and the thickness T104 of the intermediate layer <NUM> are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto.

The first metal layer <NUM> is a single metal layer, and the thickness T1 of the first metal layer <NUM> is <NUM>, but the disclosure is not limited thereto. In some embodiments, the thickness T1 of the first metal layer <NUM> is the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. The second metal layer <NUM> includes three conductive layers, and the thicknesses of the three conductive layers are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto. In some embodiments, the thicknesses of the three conductive layers of the second metal layer <NUM> respectively are the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. In the embodiment, the second metal layer <NUM> does not include the second portion P2 in <FIG>, <FIG>. Similar to <FIG>, the electronic device 1D may include the fourth metal layer <NUM> having the plurality of the patterns 19P. In the embodiment, the protrusion structure 12C overlaps at least part of the patterns 19P in the normal direction DT1, but the disclosure is not limited thereto.

Referring to <FIG>, <FIG>, the main differences between an electronic device 1E, which does not fall within the scope of the invention, and the electronic device 1D in <FIG>, <FIG> are as follows.

In the electronic device 1E, the thickness T100 of the first substrate <NUM>, the thickness T102 of the second substrate <NUM>, and the thickness T104 of the intermediate layer <NUM> are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto.

The first metal layer <NUM> is a single metal layer, and the thickness T1 of the first metal layer <NUM> is <NUM>, but the disclosure is not limited thereto. In some embodiments, the thickness T1 of the first metal layer <NUM> is the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. The second metal layer <NUM> includes three conductive layers, and the thicknesses of the three conductive layers along the normal direction DT1 are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto. In some embodiments, the thicknesses of the three conductive layers of the second metal layer <NUM> respectively are the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. Similar to <FIG>, the electronic device 1E may include the fourth metal layer <NUM> having the at least one pattern 19P. In the embodiment, the protrusion structure 12C does not overlap the pattern 19P in the normal direction DT1, but the disclosure is not limited thereto.

Referring to <FIG>, <FIG>, the main differences between an electronic device 1F, which does not fall within the scope of the invention, and the electronic device 1E in <FIG>, <FIG> are as follows.

In the electronic device 1F, the thickness T100 of the first substrate <NUM>, the thickness T102 of the second substrate <NUM>, and the thickness T104 of the intermediate layer <NUM> are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto.

The first metal layer <NUM> is a single metal layer, and the thickness T1 of the first metal layer <NUM> is <NUM>, but the disclosure is not limited thereto. In some embodiments, the thickness T1 of the first metal layer <NUM> is the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. The second metal layer <NUM> includes three conductive layers, and the thicknesses of the three conductive layers along the normal direction DT1 are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto. In some embodiments, the thicknesses of the three conductive layers of the second metal layer <NUM> respectively are the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. Similar to <FIG>, the electronic device 1F may include the fourth metal layer <NUM> having the at least one pattern 19P. In the embodiment, the protrusion structure 12C does not overlap the pattern 19P in the normal direction DT1, but the disclosure is not limited thereto.

Referring to <FIG>, <FIG>, the main differences between an electronic device <NUM>, which does not fall within the scope of the invention, and the electronic device 1D in <FIG>, <FIG> are as follows.

In the electronic device <NUM>, the thickness T100 of the first substrate <NUM>, the thickness T102 of the second substrate <NUM>, and the thickness T104 of the intermediate layer <NUM> are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto.

The first metal layer <NUM> is a single metal layer, and the thickness T1 of the first metal layer <NUM> is <NUM>, but the disclosure is not limited thereto. In some embodiments, the thickness T1 of the first metal layer <NUM> is the maximum thickness in the normal direction DT1, and a relatively flat portion may be selected for measurement. The second metal layer <NUM> includes three conductive layers, and the thicknesses of the three conductive layers along the normal direction DT1 are, for example, <NUM>, <NUM>, and <NUM> in the order, but the disclosure is not limited thereto. Similar to <FIG>, the electronic device 1C may include the fourth metal layer <NUM> having the plurality of the patterns 19P. In the embodiment, the protrusion structure 12C overlaps at least part of the patterns 19P in the normal direction DT1, but the disclosure is not limited thereto.

In the embodiments of the disclosure, the protrusion structure includes at least one organic insulating layer and is located in the peripheral region of the electronic device. The first metal layer extends into and ends in the protrusion structure, providing the first metal layer with proper protection and reducing the corrosion probability of the first metal layer, so that the electronic device has good display quality or electrical performance. In some embodiments, the electronic device may further satisfy <NUM> ≦G1/W1 ≦<NUM> to improve the protection provided by the protrusion structure to the first metal layer. In some embodiments, the metal layer extending into the protrusion structure is covered by a plurality of organic insulating layers in the protrusion structure to reduce the corrosion probability of the metal layer. In some embodiments, covering the protrusion structure with a plurality of inorganic insulating layers contributes to improving the effect of blocking moisture and oxygen, thereby reducing the corrosion probability of the metal layer extending into the protrusion structure. In some embodiments, the plurality of inorganic insulating layers covering the protrusion structure may include the same or similar materials, so that there is no obvious interface between the plurality of inorganic insulating layers, thereby reducing moisture and oxygen invading from between the a plurality of inorganic insulating layers, and the corrosion probability of the metal layer extending into the protrusion structure may be reduced. In some embodiments, the second metal layer disposed between the inorganic insulating layer and the organic insulating layer may be farther from the outer edge S12P of the protrusion structure <NUM> than the first metal layer, so that the protection (the effect of blocking moisture and oxygen) of the second metal layer is improved. In some embodiments, the first metal layer may be separated into two parts in the inner protrusion structure, so that when the first metal layer in the protrusion structure is corroded, the probability of the corrosion spreading through the first metal layer to the display region is reduced.

Claim 1:
An electronic device (<NUM>, 1A, 1B) having a peripheral region (R2), comprising:
a substrate (<NUM>);
a first metal layer (<NUM>) disposed on the substrate (<NUM>);
a second metal layer (<NUM>) disposed on the substrate (<NUM>);
a third metal layer (<NUM>) disposed on the substrate (<NUM>);
a protrusion structure (<NUM>) disposed on the substrate (<NUM>) and located entirely in the peripheral region (R2), the protrusion structure (<NUM>) comprising a first organic insulating layer (<NUM>), a second organic insulating layer (<NUM>) and a third organic insulating layer (<NUM>);
a first inorganic insulating layer (<NUM>) disposed on the substrate (<NUM>) and located between the first organic insulating layer (<NUM>) and the substrate (<NUM>); and
a second inorganic insulating layer (<NUM>) disposed on the second organic insulating layer (<NUM>) and the first inorganic insulating layer (<NUM>), wherein the protrusion structure (<NUM>) is located between the second inorganic insulating layer (<NUM>) and the first inorganic insulating layer (<NUM>);
wherein the first metal layer (<NUM>) extends into and ends in the protrusion structure (<NUM>),
the first organic insulating layer (<NUM>) is located between the second organic insulating layer (<NUM>) and the substrate (<NUM>), the first metal layer (<NUM>) is located between the second organic insulating layer (<NUM>) and the third organic insulating layer (<NUM>), the second metal layer (<NUM>) is located between the first organic insulating layer (<NUM>) and the first inorganic insulating layer (<NUM>), and the first organic insulating layer (<NUM>) is overlapped with the second organic insulating layer (<NUM>) in a normal direction (DT1) of the substrate (<NUM>),
the third metal layer (<NUM>) is located between the first metal layer (<NUM>) and the second metal layer (<NUM>),
the first organic insulating layer (<NUM>) is located between the third metal layer (<NUM>) and the second metal layer (<NUM>), the third organic insulating layer (<NUM>) is located between the third metal layer (<NUM>) and the first metal layer (<NUM>), and the second organic insulating layer (<NUM>) is located between the first metal layer (<NUM>) and the second inorganic insulating layer (<NUM>), and
a width of the protrusion structure (<NUM>) is W1, a distance between the first metal layer (<NUM>) and an outer edge (S12P) of the protrusion structure (<NUM>) is G1, and <NUM> ≦ G1 /W1 ≦ <NUM>.