DISPLAY DEVICE

A display device and another display device are provided. The display device includes a substrate, multiple light emitting units, a first and a second structures. The light emitting units are disposed on the substrate and generate heat. The first structure is disposed on the substrate. The second structure is disposed outside of the substrate. The heat is transferred from the light emitting units to the second structure through the first structure. Another display device includes a substrate, multiple light emitting units, a first and a second structures. The light emitting units are disposed on the substrate and generate heat. The first structure is disposed on the substrate and transfers the heat. In a top view of another display device, an area of a portion of the first structure is greater than an area of a portion of the light emitting units in a predetermined square region of the substrate.

BACKGROUND

Technical Field

The disclosure relates to a display device, in particular to an electronic capable of improving a problem of heat dissipation.

Description of Related Art

Electronic devices or splicing electronic devices have been widely used in mobile phones, televisions, monitors, tablet computers, car displays, wearable devices, and desktop computers. With the booming development of electronic devices, the quality of electronic devices has become more and more demanding.

SUMMARY

The disclosure provides a display device capable of improving a problem of heat dissipation.

According an embodiment of the disclosure, a display device includes a substrate, multiple light emitting units, a first structure, and a second structure. The light emitting units are disposed on the substrate and generate heat. The first structure is disposed on the substrate. The second structure is disposed on an outside of the substrate. The heat is transferred from the light emitting units to the second structure through the first structure.

According to an embodiment of the disclosure, another display device includes a substrate, multiple light emitting units, a first structure, and a second structure. The light emitting units are disposed on the substrate and generate heat. The first structure is disposed on the substrate and transfers the heat. In a top view of another display device, an area of a portion of the first structure is greater than an area of a portion of the light emitting units in a predetermined square region of the substrate.

DESCRIPTION OF THE EMBODIMENTS

The disclosure can be understood by referring to the following detailed description and also in conjunction with the accompanying drawings. It should be noted that, for the reader’s ease of understanding and for the sake of brevity of the accompanying drawings, only a portion of the electronic device is shown in the various accompanying drawings in this disclosure, and that particular components in the accompanying drawings are not drawn to actual scale. In addition, the number and dimensions of the components in the drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure.

In the following description and the claims, terms such as “include” and “comprise” are open-ended, and therefore should be interpreted as “include but not limited to.”

It should be understood that when a component or membrane layer is said to be “on” or “connected to” another component or membrane layer, it may be directly on or directly connected to such other component or membrane layer, or there may be an inserted component or membrane layer between the two (the non-direct case). Conversely, when the component is said to be “directly” on or “directly connected to” another component or membrane layer, there is no inserted component or membrane layer between the two.

It should be understood that while the terms first, second, third... may be used to describe a variety of constituent components, the constituent components are not limited to this terminology. This term is used only to distinguish a single component from other components in the specification. Instead of using the same terminology in the claims, the terms first, second, third... are substituted in the order in which the components are declared in the claims. Therefore, in the following description, the first constituent component may be the second constituent component in the claims.

The terms “approximately,” “about,” “substantially,” and “roughly” in the text usually mean within 10%, or within 5%, or within 3%, or within 2%, or within 1%, or within 0.5% of a given value or range. The quantity given here is an approximate quantity, i.e., without specifying "approximately," "about", "substantially" or "roughly", the meaning of "approximately," "about", "substantially" or "roughly" may still be implied.

In some embodiments of the disclosure, terms such as “joint”, “interconnection”, etc., unless specifically defined, may refer to two structures in direct contact, or may refer to two structures that are not in direct contact and in which other structures are provided between the two structures. The terms about connecting and joint may also include the case where both structures are movable, or where both structures are fixed. In addition, the term “coupling” includes any direct and indirect means of electrical connection.

In some embodiments of the disclosure, the area, width, thickness or height of each element, or distance or spacing between elements may be measured using optical microscopy (OM), scanning electron microscope (SEM), alpha-step (α-step), ellipsometry, or other suitable means. In detail, according to some embodiments, a scanning electron microscope may be used to obtain a cross-sectional structure image containing the elements to be measured, and to measure the area, width, thickness or height of each element, or the distance or spacing between the elements.

The electronic device may include a display device, an antenna device (such as a liquid crystal antenna), a sensing device, a light emitting device, a touch device or a splicing device, but not limited thereto. The electronic device may include a bendable and flexible electronic device. The shape of the electronic device can be rectangular, round, polygonal, with curved edges or other suitable shapes. The display device may include, for example, light emitting diode (LED), liquid crystal, fluorescence, phosphor, quantum dot (QD), other suitable materials, or a combination of the foregoing, but not limited thereto. Light emitting diodes may include, for example, organic light emitting diodes (OLED), inorganic light emitting diodes, sub-millimeter light emitting diodes (mini LED), micro light emitting diodes (micro LED), or quantum dot light emitting diodes ( QDLED), other suitable materials or any combination of the above, but not limited thereto. The display device may also include, for example, a spliced display device and a backlight module, but not limited thereto. The antenna device may be, for example, a liquid crystal antenna, but not limited thereto. The antenna device may include, for example, but not limited to, an antenna splicing device. It should be noted that the electronic device can be any combination of the aforementioned arrangements, but not limited thereto. The electronic device may have a drive system, control system, light source system, shelf system... and other peripheral systems to support the display device, antenna device or splicing device. This disclosure will be described below in terms of a display device, but the disclosure is not limited thereto.

It should be noted that the following embodiments may be used to replace, reorganize, or mix features from several different embodiments to complete other embodiments without departing from the spirit of the disclosure. The features of each embodiment can be mixed and matched as long as they do not contradict the spirit of the disclosure or conflict with each other.

Reference will now be made in detail to exemplary embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

FIG.1Ais a schematic top view of a display panel according to some embodiments of the disclosure.FIG.1Bis a schematic cross-sectional view of the display panel ofFIG.1Ataken along a line I to I′. For clarity of the accompanying drawings and ease of illustration,FIG.1Aomits to show certain elements in a display device100.

ReferringFIG.1AandFIG.1Bat the same time, the display device100according to this embodiment includes a substrate110, a dielectric layer111, multiple light emitting units120, a first structure130, a second structure140, and a pixel define layer (PDL)150and an encapsulation layer160. The substrate110has a first surface110aand a second surface110bopposite to the first surface110a. The substrate110may have thermal conductivity. In this embodiment, the substrate110may include a rigid substrate, a flexible substrate, or a combination of the foregoing. For example, a material of the substrate110may include glass, quartz, sapphire, ceramics, polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), other suitable substrate materials, or a combination of the foregoing, but not limited thereto.

Specifically, the dielectric layer111is disposed on the first surface110aof the substrate110. The dielectric layer111may have a single-layer structure or a multi-layer structure. When the dielectric layer111has a single-layer structure, the dielectric layer111may have a surface111aand a surface111bopposite to each other. When the dielectric layer111has a multi-layer structure, the surface111bmay be a lower surface of a bottommost structure in contact with the first surface110aof the substrate110, and the surface111aof the dielectric layer111may be an upper surface of a topmost structure. A transistor113, a scan line SL and a data line DL are disposed on the first surface110aof the substrate110. The transistor113includes a semiconductor layer and a material of the semiconductor layer may include amorphous silicon, low-temperature polysilicon (LTPS), metal oxides, such as indium gallium zinc oxide (IGZO), other suitable materials, or a combination of the above, but not limited thereto. A first pad114and a second pad115are connected to the light emitting unit120and are respectively disposed on the surface111aof the dielectric layer111. The first pad114may be electrically connected to the transistor113, and the second pad115may be electrically connected to a common signal. The scan line SL and the data line DL may be electrically connected to the transistor113respectively. The scan line SL and the data line DL may be interleaved with each other, but not limited thereto. A pixel unit PX may be defined by an arrangement of the scan line SL and the data line DL, and may also be defined by a range surrounded by the pixel define layer150, but not limited thereto.

In this embodiment, a first direction X, a second direction Y, and a third direction Z are different directions. The first direction X is, for example, an extension direction of the scan line SL. The second direction Y is, for example, an extension direction of the data line DL. The third direction Z is, for example, a normal direction of the substrate110. The first direction X is substantially perpendicular to the second direction Y, and the first direction X and the second direction Y are substantially perpendicular to the third direction Z, respectively, but not limited thereto.

The multiple light emitting units120are disposed on the substrate110, and at least one of the light emitting units120is disposed in the pixel unit PX. In this embodiment, the multiple light emitting units120are disposed on the first surface110aof the substrate110. In a schematic cross-sectional view of the display device100, the light emitting unit120may be disposed between the pixel define layer150. The light emitting unit120may include light emitting diodes of different colors, such as red light emitting diodes, green light emitting diodes, and blue light emitting diodes, but not limited thereto. The light emitting unit120has a first electrode121and a second electrode122. The first electrode121is connected to the first pad114, and the second electrode122is connected to the second pad115. The light emitting unit120may be electrically connected to the transistor113through the first electrode121and the first pad114, and may be electrically connected to the common signal through the second electrode122and the second pad115. In this embodiment, the multiple light emitting units120may emit light and generate heat.

In addition, in this embodiment, the light emitting unit120has a height H1, and the pixel define layer150has a height H2. When the height H2is 0.5 times to 1.5 times the height H1, the thermal conductivity of the heat generated by the light emitting unit120to the first structure130on the pixel define layer150may be improved. The height H1is a maximum height of the light emitting unit120measured along the third direction Z, and the height H2is a maximum height of the pixel define layer150measured along the third direction Z.

The first structure130is disposed on the substrate110. In this embodiment, the first structure130is disposed on the first surface110aof the substrate110. The first structure130may be disposed on the surface111aof the dielectric layer111, and includes a thermal conductive layer135and a thermal conductive layer136, but not limited thereto. In this embodiment, the thermal conductive layer135may be formed first and then the pixel define layer150, and the thermal conductive layer136formed later may be disposed on a top surface151and a side surface152of the pixel define layer150, but not limited thereto. Other embodiments may have other setting relationships. An exposed region EX1 is located in the thermal conductive layer135so that the first structure130may expose the light emitting unit120as well as a portion of the dielectric layer111. The first structure130may overlap the scan line SL and the data line DL in the normal direction of the substrate110(i.e., the third direction Z). The first structure130may be connected to the second pad115of the light emitting unit120, but not to the first pad114of the light emitting unit120. The first structure130may be electrically connected to the common signal, so that the first structure130may be configured to transmit the common signal.

In addition, in this embodiment, the first structure130has thermal conductivity to conduct heat. The thermal conductivity of the first structure130may be greater than the thermal conductivity of the encapsulation layer160, but not limited thereto. In this embodiment, the first structure130may be a single-layer structure or a multi-layer structure. The first structure130may be a liquid cooling thermal conductivity structure or a micro-channel liquid cooling structure, but not limited thereto. A material of the first structure130may be a conductive and thermal conductive material such as metal, graphite or oxide conductor, and the material of the first structure130is also a thermal conductive material such as ceramic, but not limited thereto. The material of the first structure130may be the same or different from a material of the second pad115, but not limited thereto.

In addition, in a top schematic view of the display device100, in each of the pixel unit PX, because the first structure130has thermal conductivity, an area A1of the first structure130may be greater than an area A2of the light emitting unit120, the area A1of the first structure130may be greater than a half of an area A3of the pixel unit PX (i.e., A1>½×A3), and the first structure130may span across the multiple light emitting units120or may span across multiple pixel units PX, so that the heat generated by the light emitting units120may be effectively and evenly dispersed and conducted outside the substrate110through the first structure130, in order to achieve an effect of heat dissipation. Measurement of the area can be observed or measured in a plane formed by the direction X and the direction Y in the top schematic view.

The second structure140is disposed outside the substrate110to contact an outside world (e.g., air). In this embodiment, the second structure140may be under the substrate110, and in other embodiments, the second structure140may be on a side of the substrate110, but not limited thereto. The second structure140may be disposed on the second surface110bof the substrate110and contact the second surface110b. The second structure140may be a heat sink with a heat dissipation function, and the heat sink has multiple fins, but the disclosure does not limit a shape of the heat sink, as long as a surface area available for contacting the outside world can be at least greater than or equal to 50% of a total surface area of the heat sink itself. A material of the second structure140may be copper, aluminum or other suitable heat dissipation materials, but not limited thereto. In this embodiment, the heat generated by the multiple light emitting units120may be effectively conducted through the first structure130to the second structure140outside the substrate110, and then through the second structure140to the outside world (e.g., air) to achieve the effect of heat dissipation. In some embodiments, the second structure140may be a final element that conducts heat to the outside world (e.g., air) or the final element that contacts the outside world, but is not limited thereto.

Other embodiments are set forth below for illustrative purposes. It should be noted here that the following embodiments follow the numeral references and parts of the previous embodiments, where the same numeral references are used to indicate the same or similar components, and the description of the same technical content is omitted. The description of the omitted parts can be found in the preceding embodiments, and will not be repeated in the following embodiments.

FIG.2is a schematic top view of a display panel according to some embodiments of the disclosure. Referring toFIG.1AandFIG.2at the same time, a display device100aaccording to this embodiment is substantially similar to the display device100ofFIG.1A, so the same and similar components of the two embodiments are not repeated here. One of differences between the display device100aaccording to this embodiment and the display device100is that the first structure130includes a bridge133, a bridge134, and multiple frames131. In a top view, the bridge133is located between two adjacent exposed regions EX2 and EX3 (or between two adjacent exposed regions EX4 and EX5), and the bridge134is located between two adjacent exposed regions EX2 and EX4 (or between two adjacent exposed regions EX3 and EX5), and other similar components will not be repeated here, while the frames131are located within the exposed regions EX2 to EX5 and the bridges133and134.

Each of the frame131is disposed in the each of the pixel unit PX. In two adjacent pixel units PX, the frame131in one of the pixel unit PX may be connected to the frame131in the other pixel unit PX, but it not limited thereto. In this embodiment, the frame131may, for example, be visualized as a rectangle or quadrilateral with four side edges, but not limited thereto.

Specifically, the frame131may include a first side1311, a second side1312, a third side1313, and a fourth side1314. The first side1311and the second side1312are opposite to each other, and the third side1313and the fourth side1314are opposite to each other. The third side1313connects the first side1311and the second side1312, and the fourth side1314connects the first side1311and the second side1312. In this embodiment, one light emitting unit120is disposed in the each of the pixel unit PX. In the each of the pixel unit PX, the first side1311, the second side1312, the third side1313, and the fourth side1314of the frame131may be respectively disposed around the light emitting unit120to surround the light emitting unit120. That is, in this embodiment, the multiple light emitting units120may be respectively disposed in the pixel unit PX, and one light emitting unit120in the each of the pixel unit PX may be surrounded by the frame131.

Specifically, referringFIG.2, in this embodiment, the frame131in the first structure130may not overlap the scan line SL and the data line DL in the normal direction of the substrate110(i.e., the third direction Z) to reduce parasitic capacitance between the frame131and the scan line SL and to reduce parasitic capacitance between the frame131and the data line DL.

In this embodiment, the bridge133and the bridge134are disposed between two adjacent frames131to connect two adjacent frames131of the multiple frames131. That is, in two adjacent pixel units PX, the frame131in one of the pixel units PX may be connected to the frame131in the other pixel unit PX through the bridge133or the bridge134. In addition, the bridge133may overlap the scan line SL in the normal direction of the substrate110(i.e., the third direction Z), and the bridge134may overlap the data line DL in the normal direction of the substrate110(i.e., the third direction Z). In this embodiment, a length L1of the bridge133in the first direction X is less than a length L2of the frame131in the first direction X, and a length L3of the bridge134in the second direction Y is less than a length L4of the frame131in the second direction Y, thereby reducing parasitic capacitance between the first structure130and the scan line SL and reducing parasitic capacitance between the first structure130and the data line DL.

FIG.3is a schematic top view of a display panel according to some embodiments of the disclosure. ReferringFIG.1AandFIG.3at the same time, a display device100baccording to this embodiment is substantially similar to the display device100ofFIG.1A, so the same and similar components of the two embodiments are not repeated here. One of the differences between the display device100baccording to this embodiment and the display device100is that in the display device100baccording to this embodiment, the multiple light emitting units120are disposed in the each of the pixel unit PX.

Specifically, referringFIG.3, in this embodiment, for example, four light emitting units120are disposed in the each of the pixel unit PX. However, the disclosure does not limit a number of the light emitting units120disposed in the each of the pixel unit PX, as long as the number of the light emitting units120is 2 or more. In some embodiments, in the each of the pixel unit PX, the first side1311, the second side1312, the third side1313, and the fourth side1314of the frame131as shown inFIG.2may be disposed around the multiple light emitting units120, respectively, to surround the multiple light emitting units120. That is, the multiple light emitting units120in the each of the pixel unit PX may be surrounded by the frame131.

FIG.4is a schematic top view of a display panel according to some embodiments of the disclosure. ReferringFIG.2andFIG.4at the same time, a display device100caccording to this embodiment is substantially similar to the display device100ofFIG.2, so the same and similar components in the two embodiments will not be repeated here. One of the differences between the display device100caccording to this embodiment and the display device100is that in the display device100caccording to this embodiment, a frame131ain the each of the pixel unit PX surrounds the light emitting unit120.

Specifically, referringFIG.4, in this embodiment, the frame131ain the first structure130in the each of the pixel unit PX includes two sides, for example, the first side1311and the second side1312opposite to each other, but not limited thereto. In some embodiments, the two sides may also be the first side1311and the third side1313, the first side1311and the fourth side1314, the second side1312and the third side1313, or the second side1312and the fourth side1314inFIG.2. In some embodiments, the frame in the first structure130may also include at least one side of the first structure130inFIG.2to surround the light emitting unit120, for example, any one side or any three sides of the first structure130inFIG.2may surround the light emitting unit120.

In this embodiment, since a portion of the scan line SL may not overlap the frame131aof the first structure130in the normal direction of the substrate110(i.e., the third direction Z), the parasitic capacitance between the first structure130and the scan line SL may be reduced.

FIG.5Ais a schematic top view of a display panel according to some embodiments of the disclosure.FIG.5Bis a schematic cross-sectional view of the display panel ofFIG.5Ataken along a line II to II'. ReferringFIG.1AtoFIG.1BandFIG.5AtoFIG.5Bat the same time, a display device100daccording to this embodiment is substantially similar to the display device100ofFIGS.1A to FIG.1B, so the same and similar components in the two embodiments are not repeated here. One of the differences between the display device100daccording to this embodiment and the display device100is that in the display device100daccording to this embodiment, the first structure130includes multiple frames131and multiple connectors132. The connector132is disposed between the light emitting unit120and the frame131in the each of the pixel unit PX to connect the second pad115of the light emitting unit120and the frame131. A material of the connector132of the first structure130may be the same or different from a material of the frame131, increasing design flexibility according to demand, such as increasing electrical conductivity, increasing thermal conductivity, reducing a risk of wire breakage, increasing capacitance, facilitating wire layout, but not limited thereto.

FIG.6Ais a schematic top view of a display panel according to some embodiments of the disclosure.FIG.6Bis a schematic cross-sectional view of the display panel ofFIG.6Ataken along a line III to III'. ReferringFIG.1AtoFIG.1BandFIG.6AtoFIG.6Bat the same time, a display device100eaccording to this embodiment is substantially similar to the display device100ofFIGS.1A to FIG.1B, so the same and similar components in the two embodiments are not repeated here. One of the differences between the display device100eaccording to this embodiment and the display device100is that the display device100eaccording to this embodiment has a display region101and a non-display region102adjacent to the display region101. The display region101includes a first region101aand a second region101b, and the display device100efurther includes a third structure170, a fourth structure172, a gate driver180, and a data driver182.

Specifically, referringFIG.6AandFIG.6B, in this embodiment, the multiple light emitting units120and the pixel define layer150are disposed in the display region101. The gate driver180and the data driver182are disposed in the non-display region102. The first structure130, the third structure170, and the fourth structure172are disposed in the display region101and the non-display region102. In a schematic top view of the display device100e(as shown inFIG.6A), the third structure170may be staggered or irregularly arranged in the display region101, but not limited thereto. In some embodiments, the third structure may also be arranged in an array in the display region101(not shown).

More specifically, the fourth structure172is disposed on the first surface110aof the substrate110and is located between the dielectric layer111and the substrate110. The first structure130and the fourth structure172are respectively located on opposite sides of the dielectric layer111. The fourth structure172has thermal conductivity, and a material of the fourth structure172may be the same or different from the material of the first structure130, and therefore will not be repeated here.

The third structure170is disposed on the first surface110aof the substrate110and penetrates the dielectric layer111. The third structure170may connect the second pad115(or the first structure130) and the fourth structure172.

In this embodiment, a structure type of the third structure170may be, for example, a thermally conductive connection structure, but the disclosure does not limit the structure type of the third structure170, as long as the third structure170may connect to the second pad115(or the first structure130) to the fourth structure172. In this embodiment, because the third structure170and the fourth structure172both have thermal conductivity, the heat generated by the multiple light emitting units120may be effectively conducted through the first structure130, the third structure170, and the fourth structure172to the substrate110, and then through the second structure140to the outside world (e.g., air) to achieve the effect of heat dissipation. In this embodiment, a material of the third structure170and the fourth structure172may be the same or different from the material of the first structure130, but not limited thereto.

In a schematic top view of the display device100e(as shown inFIG.6A), the third structure170has a first density in the non-display region102, has a second density in the first region101aof the display region101, and has a third density in the second region101bof the display region101. The density may be a number of the third structure170in a same unit area in the schematic top view (e.g., a plane formed by the direction X and the direction Y). The unit area may be 1×1 cm, 2×2 cm, 3×3 cm, etc., but not limited thereto. The first density may be different from the second density and the third density. For example, the first density may be greater than the second density and the third density, or the first density may be greater than the second density and the second density may be greater than the third density, but not limited thereto. In some embodiments, the second density may also be equal to the third density (not shown). In product design, a region of the third structure170may be disposed according to heat energy distribution, and in principle, a higher density of the third structure170may help the heat energy to be discharged more quickly. In some embodiments, the third structure170is not designed to be in the non-display region102, i.e., there is no first density in the non-display region102, but only the second density and the third density, where the second density may be greater than the third density, or the second density may be equal to the third density (not shown), but not limited thereto. In some embodiments, the third structure170is not designed to be in the first region101aand the second region101bof the display region101, i.e., there is no second density and third density. The third structure170is only in the non-display region102, but is not limited to in one corner of the non-display region102as shown inFIG.6A, and the third structure170may be designed anywhere in the non-display region102according to design requirements.

In a top view of the display device100e(as shown inFIG.6A), since an area A4of the first structure130in a predetermined square region R of the substrate110may be greater than an area A5of all the light emitting units120in the predetermined square region R (i.e., A4>A5), and the area A4of the first structure130in the predetermined square region R may be greater than a half of an area A6of the predetermined square region R (i.e., A4>½×A6), so that the heat generated by the multiple light emitting units120may be effectively and evenly dispersed and conducted outside the substrate110through the first structure130to achieve the effect of heat dissipation. The predetermined square region R is located in the display region101, the area A6of the predetermined square region R is at least 10% of the area A7of the display region101(i.e., A6≥ 10%×A7), and a center point C of the predetermined square region R is a center point of the light emitting unit120.

FIG.7is a schematic cross-sectional view of a display panel according to some embodiments of the disclosure. ReferringFIG.1BandFIG.7at the same time, a display device100faccording to this embodiment is substantially similar to the display device100ofFIG.1B, so the same and similar components in the two embodiments are not repeated here. One of differences between the display device100faccording to this embodiment and the display device100is that the display device100faccording to this embodiment further includes a medium190.

Specifically, referringFIG.7, in this embodiment, the medium190is disposed between the second surface110bof the substrate110and the second structure140, so that the medium190may contact the substrate110and the second structure140, and so that the second structure140may be connected to the first structure130through the medium190and the substrate110. In this embodiment, the medium190may contact the outside world, and a surface area of the medium190available to contact the outside world may be less than 50% of its own total surface area. A material of the medium190is, for example, thermal paste, but not limited thereto.

In this embodiment, because the medium190has thermal conductivity, the heat generated by the multiple light emitting units120may be effectively conducted through the first structure130to the substrate110, and then through the medium190and the second structure140to the outside world (e.g., air) to achieve the effect of heat dissipation.

FIG.8is a schematic cross-sectional view of a display panel according to some embodiments of the disclosure. ReferringFIG.6BandFIG.8at the same time, a display device100gaccording to this embodiment is substantially similar to the display device100eofFIG.6B, so the same and similar components in the two embodiments will not be repeated here. One of differences between the display device100gaccording to this embodiment and the display device100eis that the display device100gaccording to this embodiment further includes a medium192.

Specifically, referringFIG.8, in this embodiment, the medium192is disposed on the second surface110bof the substrate110and in the substrate110, so that the medium192may connect the fourth structure172and the second structure140, and so that the second structure140may be connected to the first structure130through the medium192, the fourth structure172, and the third structure171.

In this embodiment, the medium192includes a thermal conductive layer1921and a thermally conductive medium connection structure1922. The thermal conductive layer1921is disposed between the second surface110b of the substrate110and the second structure140, so that the thermal conductive layer1921may connect the substrate110and the second structure140. The thermally conductive medium connection structure1922penetrates the substrate110to connect the fourth structure172and the thermal conductive layer1921. In addition, in this embodiment, the medium192may contact the outside world, and a surface area of the medium192available to contact the outside world may be less than 50% of its own total surface area. A material of the medium192may be the same or different from the material of the first structure130, but not limited thereto.

In this embodiment, the third structure171includes a thermally conductive connection structure1711, a thermal conductive layer1712, and a thermally conductive connection structure1713. The third structure171is disposed on the substrate110. For example, the thermally conductive connection structure1711and the thermally conductive connection structure1713respectively penetrate a portion of the dielectric layer111, and the thermally conductive connection structure1711and the thermally conductive connection structure1713may be connected through the thermal conductive layer1712. In some embodiments, a structure type of the third structure171may be different depending on requirements, as long as the third structure171may connect the first structure130and the fourth structure172.

In this embodiment, because the medium192has thermal conductivity, the heat generated by the multiple light emitting units120may be effectively conducted through the first structure130, the third structure171, and the fourth structure172to the substrate110, and then through the medium192and second structure140to the outside world (e.g., air) to achieve the effect of the effect of heat dissipation.

FIG.9is a schematic cross-sectional view of a display panel according to some embodiments of the disclosure. ReferringFIG.1BandFIG.9at the same time, a display device100haccording to this embodiment is substantially similar to the display device100ofFIG.1B, so the same and similar components in the two embodiments are not repeated here. One of differences between the display device100haccording to this embodiment and the display device100is that the display device100haccording to this embodiment further includes a fifth structure174and a substrate210.

Specifically, referringFIG.9, in this embodiment, the fifth structure174is disposed on a surface161of the encapsulation layer160away from the substrate110, and the fifth structure174may be connected to the first structure130. A material of the fifth structure174may be the same or different from the material of the first structure130, but not limited thereto.

The substrate210and the substrate110are disposed opposite to each other, and the substrate210and the substrate110are respectively disposed on opposite sides of the encapsulation layer160. The substrate210may be disposed on the surface161of the encapsulation layer160to cover and connect the fifth structure174. The substrate210may contact the outside world. A material of the substrate210may be the same or different from the material of the substrate110, but not limited thereto.

In this embodiment, because the fifth structure174and the substrate210have thermal conductivity, the heat generated by the multiple light emitting units120may be effectively conducted through the first structure130and the fifth structure174to the substrate210, and then through the substrate210is conducted to the outside world (e.g., air) to achieve the effect of heat dissipation.

FIG.10is a schematic cross-sectional view of a display panel according to some embodiments of the disclosure. ReferringFIG.1BandFIG.10at the same time, a display device100iaccording to this embodiment is substantially similar to the display device100ofFIG.1B, so the same and similar components in the two embodiments are not repeated here. One of differences between the display device100iaccording to this embodiment and the display device100is that the display device100iaccording to this embodiment has the display region101and the non-display region102adjacent to the display region101, and the display device100ifurther includes a sixth structure176, a metal wire177, and a carrier200.

Specifically, referringFIG.10, in this embodiment, the multiple light emitting units120and the pixel define layer150are disposed in the display region101. The first structure130is disposed in the display region101and the non-display region102. The sixth structure176, the metal wire177, and the carrier200are disposed in the non-display region102.

More specifically, the sixth structure176is disposed on a side110cof the substrate110. The sixth structure176may connect the first structure130and the second structure140(not shown), so that the first structure130may be connected to the second structure140through the sixth structure176. A material of the sixth structure176may be the same or different from the material of the first structure130, but not limited thereto. The carrier200is disposed on a periphery of the display device100iand may contact the outside world. In this embodiment, the carrier200may be connected to the sixth structure176through the metal wire177, but not limited thereto. In some embodiments, the carrier200may also contact the sixth structure, thus eliminating a need for additional metal wires (not shown). A material of the carrier200is, for example, aluminum, aluminum alloy or other suitable metal or ceramic, plastic materials, but not limited thereto.

In this embodiment, because the sixth structure176and the metal wire177have thermal conductivity, and the carrier200has the heat dissipation function, the heat generated by the multiple light emitting units120may be effectively conducted through the first structure130, the sixth structure176, and the metal wire177to the carrier200, and then through the carrier200to the outside world (e.g., air) to achieve the effect of heat dissipation.

FIG.11is a schematic cross-sectional view of a display panel according to some embodiments of the disclosure. ReferringFIG.6BandFIG.11at the same time, a display device100jaccording to this embodiment is substantially similar to the display device100eofFIG.6B, so the same and similar components in the two embodiments are not repeated here. One of differences between the display device100jaccording to this embodiment and the display device100eis that the display device100jaccording to this embodiment further includes a color filter substrate300.

Specifically, referringFIG.11, in this embodiment, the color filter substrate300is disposed on the surface161of the encapsulation layer160away from the substrate110, so that the color filter substrate300and the substrate110are respectively disposed on opposite sides of the encapsulation layer160. The color filter substrate300includes a substrate310and an optical layer320disposed on the substrate310. The optical layer320is located between the substrate310and the encapsulation layer160. The optical layer320includes a color conversion layer321and a black matrix322disposed adjacently. The color conversion layer321is disposed corresponding to the light emitting unit120, and the black matrix322is disposed corresponding to the pixel define layer150. In some embodiments, the color conversion layer321may be replaced with a color filter layer as needed.

In this embodiment, the third structure170and the fourth structure172may be disposed corresponding to the each of the light emitting unit120, so that the heat generated by the each of the light emitting unit120may effectively conducted through the first structure130, the third structure170corresponding to the light emitting unit120, and the fourth structure172corresponding to light emitting unit120to the substrate110, and then through the second structure140to the outside world (e.g., air) to achieve the effect of heat dissipation.

FIG.12is a top three-dimensional schematic diagram of a spliced display device according to some embodiments of the disclosure. ReferringFIG.12first, a spliced display device 10 according to this embodiment includes multiple display devices100k, a thermal conductive element250, a substrate220, and a second structure140k. Next, referringFIG.1BandFIG.12at the same time, the display device100kaccording to this embodiment is substantially similar to the display device100ofFIG.1B, so the same and similar components in the two embodiments are not repeated here. One of differences between the display device100kaccording to this embodiment and the display device100is that the display device100kaccording to this embodiment further includes a sixth structure176k.

Specifically, referringFIG.12, in this embodiment, the substrate220has a first surface220aand a second surface220bopposite to the first surface220a. The thermal conductive element250is disposed on the first surface220aof the substrate220. A material of the thermal conductive element250may be the same or different from the material of the first structure130, and therefore will not be repeated here. Multiple display devices100kare arranged in array on the first surface220aof the substrate220to cover the thermal conductive element250. The second structure140kis disposed on the second surface220bof the substrate220. The sixth structure176kis disposed on the side110cof the substrate110to connect to the first structure130. A material of the sixth structure176kmay be the same or different from the material of the first structure130, but not limited thereto.

In this embodiment, because the thermal conductive element250has thermal conductivity and the second structure140khas the heat dissipation function, the heat generated by the multiple light emitting units120may be effectively conducted through the first structure130, the substrate110, and the thermal conductive element250to the substrate220, and then through the second structure140kto the outside world (e.g., air) to achieve the effect of heat dissipation.

In addition, in this embodiment, because the sixth structure176khas thermal conductivity, the heat generated by the multiple light emitting units120may also be effectively conducted through the first structure130and the sixth structure176kto the substrate220, and then through the second structure140kto the outside world (e.g., air) to achieve the effect of heat dissipation.

In summary, in the display device according to the embodiment of the disclosure, the area of the first structure disposed on the substrate is greater than the area of the multiple light emitting units, and the first structure has thermal conductivity, so that the heat generated by the multiple light emitting units may be effectively and evenly dispersed and conducted through the first structure to the second structure outside the substrate, and then through the second structure to the outside world (e.g., air) to achieve the effect of heat dissipation. Since the third structure, the fourth structure, the fifth structure, the sixth structure, and the medium all have thermal conductivity, after being conducted to the first structure, the heat generated by the multiple light emitting units may be conducted through the third structure, the fourth structure, the fifth structure, the sixth structure, and/or the medium to the substrate and/or the second structure, and then to the outside world (e.g., air) to achieve the effect of heat dissipation. Furthermore, for measurement of heat energy, temperature data may be measured by measuring instruments such as infrared sensors or infrared cameras to know a distribution of the heat energy.

Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the disclosure and not to limit them. Although the disclosure is described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed embodiments without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the disclosure covers modifications and variations provided that they fall within the scope of the following claims and their equivalents.