Display panel

Abstract

A display panel is provided. The display panel includes a first substrate, a light emitting unit, and a light conversion unit. The light emitting unit is disposed on the first substrate. The light conversion unit is configured to convert a first light provided by the light emitting unit into a second light. The first light has a first peak wavelength. The second light has a second peak wavelength. The first peak wavelength is less than the second peak wavelength. The light conversion unit includes a plurality of light conversion particles and a plurality of first heat dissipation particles. A thermal conductivity of the plurality of first heat dissipation particles is greater than 50 W·m ‑1 ·K ‑1 Another display panel is provided. The display panel includes a first substrate, a light emitting unit, a pixel definition layer, and a separation layer. The light emitting unit is disposed on the first substrate. The pixel definition layer is disposed on the first substrate and includes an opening configured to accommodate the light emitting unit. An adhesive layer is disposed on the first substrate. At least one of the pixel definition layer and the adhesive layer includes a plurality of heat dissipation particles.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a display panel, and in particular, to a display panel with improved heat dissipation or increased service life. BACKGROUND

[0002] Electronic devices (e.g., display panels) have been widely used in life. With the rapid development of electronic devices, the demand for display quality is higher and higher, so electronic devices are constantly improved towards larger or higher resolution display effects. SUMMARY

[0003] According to an embodiment of the present disclosure, a display panel includes a first substrate, a light emitting unit, and a light conversion unit. The light emitting unit is disposed on the first substrate. The light conversion unit is configured to convert first light provided by the light emitting unit into second light. The first light has a first peak wavelength, and the second light has a second peak wavelength. The first peak wavelength is less than the second peak wavelength. The light conversion unit includes a plurality of light conversion particles and a plurality of first heat dissipation particles. The plurality of first heat dissipation particles has a thermal conductivity greater than 50 W·m -1 ·K -1 .

[0004] According to an embodiment of the present disclosure, a display panel includes a first substrate, a light emitting unit, a pixel definition layer, and a glue layer. The light emitting unit is disposed on the first substrate. The pixel definition layer is disposed on the first substrate and includes an opening configured to accommodate the light emitting unit. The glue layer is disposed on the first substrate. At least one of the pixel definition layer and the glue layer includes a plurality of heat dissipation particles. BRIEF DESCRIPTION OF DRAWINGS

[0005] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0006] Figure 1A Partial top view schematic diagram of a display panel according to an embodiment of the present disclosure;

[0007] Figure 1B Partial cross-sectional view schematic diagram of a display panel according to an embodiment of the present disclosure along section line I-I'; Figure 1A

[0008] Partial cross-sectional view schematic diagram of a display panel according to another embodiment of the present disclosure; Figure 2

[0009] Partial cross-sectional view schematic diagram of a display panel according to another embodiment of the present disclosure; Figure 3

[0010] Partial cross-sectional view schematic diagram of a display panel according to another embodiment of the present disclosure; Figure 4 ​

[0011] Figure 5 FIG. 3 is a schematic diagram of a partial cross-sectional view of a display panel according to another embodiment of the present disclosure;

[0012] Figure 6 FIG. 4 is a schematic diagram of a partial cross-sectional view of a display panel according to another embodiment of the present disclosure;

[0013] Figure 7 FIG. 5 is a schematic diagram of a partial cross-sectional view of a display panel according to another embodiment of the present disclosure.

[0014] BRIEF DESCRIPTION OF DRAWINGS

[0015] 100, 100a: display panel;

[0016] 101: light-out area;

[0017] 102: non-light-out area;

[0018] 110: first substrate;

[0019] 111, 151: surface;

[0020] 120, 120a, 120d: pixel definition layer;

[0021] 121, 171, 1620: opening;

[0022] 122: second heat dissipation particle;

[0023] 123: first light absorption particle;

[0024] 124, 142: heat dissipation particle;

[0025] 130: light-emitting unit;

[0026] 140, 140a, 140e, 140f: adhesive layer;

[0027] 141: fourth heat dissipation particle;

[0028] 150: second substrate;

[0029] 160: optical layer;

[0030] 161: color filter layer;

[0031] 162: black matrix layer;

[0032] 170, 170a: separation layer;

[0033] 172: third heat dissipation particle;

[0034] 173: second light absorption particle;

[0035] 180: light conversion unit;

[0036] 181: polymer;

[0037] 182: light-converting particles;

[0038] 183: first heat-dissipating particles;

[0039] 184: scattering particles

[0040] TS1, TS2, TS3, TS4: upper surface. DETAILED DESCRIPTION

[0041] The present disclosure can be understood with reference to the following detailed description and drawings, in which like reference numerals represent like elements, and in which: it should be noted that in order to facilitate the reader's understanding of the present disclosure and for the sake of brevity only the parts of the light emitting device are shown in the drawings and the specific elements in the drawings are not drawn according to the actual scale. In addition, the number and size of the elements in the drawings are only for illustration and are not intended to limit the scope of the present disclosure.

[0042] Certain terminology can be used in the following description of an embodiment of the application to refer to particular elements. As one skilled in the art will appreciate, the same element can be referred to by different names in different patents and / or in different uses of the same patent. No limitation is intended to a particular naming convention. In this document, relational terms such as "first," "second," and the like can be used solely to distinguish one entity or action from another entity or action, without necessarily giving these terms a sequential or chronological significance. In this document, the terms "insure," "insuring," "insured," and the like can be used to refer to an entity or action that is insured, or that insures another entity or action. In this document, the term "or" as used in a phrase such as "A or B" can be used in the sense of inclusive or in the sense of exclusive "or." The disclosure of the application is not limited to the exact numerical

[0043] It will be understood that when an element or film layer is referred to as being "on" or "connected to" another element or film layer, it can be directly on or connected to the other element or layer or intervening elements or film layers can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element or film layer, there are no intervening elements or film layers present. In addition, the term "on" as used herein with respect to a layer overlying another layer specifies that the layers have a top-to-bottom relationship in a plan view, and the layers can be above or below each other in a vertical direction, with the top-to-bottom relationship depending on the orientation of the device.

[0044] Although the terms "first", "second", "third" etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. The terms "first", "second", "third" etc. can be replaced by first, second, third etc. in the claims, depending on the order of the elements as recited in the claims. Therefore, in the following description, a first element can be a second element in the claims.

[0045] In this disclosure, the terms "about", "approximately", "substantially", "nearly" generally 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. Numerical quantities given in the specification are approximations only, meaning that the terms "about", "approximately", "substantially", "nearly" are intended to permit a variation of less than or equal to 10% of the given value, in the absence of a specific contrary indication. Further, the use of the term "from about first value to about second value" or "between about first value and about second value" means that the range includes the first value, the second value, and any values therebetween.

[0046] In some embodiments of the disclosure, the term "connected", "coupled", or the like, unless otherwise defined, can refer to two structures that are in direct contact, or can refer to two structures that are not in direct contact, with other structures interposed therebetween. Also, the term "connected", "coupled", or the like, can include both movable and fixed structures. In addition, the term "coupled" includes any direct and indirect electrical connection means.

[0047] In this disclosure, the measurement of thickness, length, and width can be measured by optical microscopy, and the thickness can be measured by cross-sectional images in electron microscopy, but is not limited thereto. In addition, there can be an error in any two values or directions used for comparison. If a first value is equal to a second value, it is implied that there can be an error of about 10% between the first value and the second value; if a first direction is perpendicular to a second direction, the angle between the first direction and the second direction can be between 80 degrees and 100 degrees; if a first direction is parallel to a second direction, the angle between the first direction and the second direction can be between 0 degrees and 10 degrees. Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be understood that terms such as defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the disclosure, and should not be interpreted in an idealized or overly formal sense unless expressly so defined in the embodiments of the disclosure.

[0048] The display panel of the present disclosure can be applied to electronic devices such as display devices, antenna devices (e.g., liquid crystal antenna), sensing devices, light emitting devices, touch devices, splicing devices, or any combination thereof. The electronic device can include a bendable or flexible electronic device. The shape of the electronic device can include a rectangle, a circle, a polygon, a shape with curved edges, or other suitable shapes. The display device can include, for example, light emitting diodes (LEDs), liquid crystals, fluorescence, phosphor, quantum dots (QDs), other suitable materials, or combinations thereof. The light emitting diode can include, for example, organic light emitting diodes (OLEDs), inorganic light emitting diodes, mini LEDs, micro LEDs, quantum dot light emitting diodes (QLEDs, QDLEDs), other suitable materials, or any combination thereof. The shape of the electronic device can be a rectangle, a circle, a polygon, a shape with curved edges, or other suitable shapes. The electronic device can have a driving system, a control system, a light source system, a shelf system, or other peripheral systems to support the display device, the antenna device, or the splicing device. The display panel will be described below, but the present disclosure is not limited thereto.

[0049] It should be understood that the following examples can be substituted, reorganized, or mixed to complete other examples without departing from the spirit of the present disclosure. The features of each example can be arbitrarily mixed and used as long as they do not conflict with each other or deviate from the spirit of the present disclosure.

[0050] Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. The same reference numerals will be used throughout the drawings and the description to refer to the same or like parts.

[0051] Figure 1A A partial top view of a display panel according to an embodiment of the present disclosure. Figure 1B A partial top view of a display panel according to an embodiment of the present disclosure. Figure 1A A partial cross-sectional view of the display panel of FIG. 1 along the cross-sectional line I-I'. For the sake of clarity and convenience of explanation, Figure 1A Some elements in the display panel are omitted for the sake of clarity.

[0052] The display panel 100 of the present embodiment has a plurality of light-out regions 101 and non-light-out regions 102. The display panel 100 can include a first substrate 110, a pixel define layer 120, a light emitting unit 130, an adhesive layer 140, a second substrate 150, an optical layer 160, a separation layer 170, and / or a light conversion unit 180, but is not limited thereto.

[0053] In some embodiments, a pixel define layer (PDL) 120 can be disposed on the first substrate 110 (e.g., a surface 111 of the first substrate 110, which is adjacent to a surface of the second substrate 150). The pixel define layer 120 can include a plurality of openings 121, and the plurality of openings 121 can be configured to respectively accommodate the light emitting unit 130. In some embodiments, the material of the pixel define layer 120 can include an organic material or an inorganic material, but is not limited thereto.

[0054] In some embodiments, the light emitting unit 130 can be disposed on the first substrate 110 (e.g., a surface 111 of the first substrate 110), and the light emitting unit 130 can be disposed within the opening 121 of the pixel define layer 120. The above-mentioned “the light emitting unit 130 can be disposed within the opening 121 of the pixel define layer 120” does not limit that the upper surface TS1 of the pixel define layer 120 needs to protrude than the upper surface TS2 of the light emitting unit 130, and the upper surface TS1 of the pixel define layer 120 can be optionally cut flush or lower than the upper surface TS2 of the light emitting unit 130.

[0055] In some embodiments, the light emitting unit 130 can be disposed corresponding to the light-out region 101, i.e., in the normal direction of the first substrate 110, the light emitting unit 130 can overlap the light-out region 101. In some embodiments, the light emitting unit 130 can include, for example, red, green, blue, white light emitting diodes, ultraviolet light emitting diodes (UV LEDs), and / or light emitting diodes of other suitable colors, but is not limited thereto.

[0056] In some embodiments, the adhesive layer 140 can be disposed on the first substrate 110 (e.g., a surface 111 of the first substrate 110), and at least part of the adhesive layer 140 can be disposed within the opening 121 of the pixel define layer 120. In some embodiments, the adhesive layer 140 can cover the pixel define layer 120 and / or encapsulate the light emitting unit 130.

[0057] In some embodiments, the material of the adhesive layer 140 can include an optically clear adhesive (OCA), an optical clear resin (OCR), other suitable materials, or a combination thereof, but is not limited thereto. In some embodiments, the adhesive layer 140 can contact the pixel define layer 120 and / or the light emitting unit 130, but is not limited thereto.

[0058] In some embodiments, the second substrate 150 is disposed relative to the first substrate 110. In some embodiments, the first substrate 110 and the second substrate 150 can be adhered to each other by the adhesive layer 140. In some embodiments, the first substrate 110 and the second substrate 150 can be respectively located on opposite sides of the adhesive layer 140. The second substrate 150 can have a surface 151 adjacent to the first substrate 110, and a surface 111 of the first substrate 110 can face the surface 151 of the second substrate 150. In some embodiments, the first substrate 110 and / or the second substrate 150 can comprise a rigid substrate, a flexible substrate, or a combination thereof. For example, the material of the first substrate 110 can comprise glass, quartz, sapphire, ceramic, polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), other suitable material, or a combination thereof, but is not limited thereto.

[0059] In some embodiments, an optical layer 160 can be disposed on the second substrate 150 (e.g., the surface 151 of the second substrate 150), and the optical layer 160 can be disposed between the second substrate 150 and the adhesive layer 140. In some embodiments, the optical layer 160 can comprise a color filter layer 161, a black matrix layer (BM) 162, and / or other suitable optical layer, but is not limited thereto. In some embodiments, the color filter layer 161 can be disposed corresponding to the light-out region 101, and the black matrix layer 162 can be disposed corresponding to the non-light-out region 102. In other words, in the normal direction of the first substrate 110, the color filter layer 161 can overlap the light-out region 101, and the black matrix layer 162 can overlap the non-light-out region 102. In some embodiments, the color filter layer 161 can comprise a red filter layer, a green filter layer, a blue filter layer, or a filter layer of other suitable color, but is not limited thereto.

[0060] In some embodiments, the material of the black matrix layer 162 can comprise a light-absorbing material, such as a black matrix (BM), but is not limited thereto.

[0061] In some embodiments, the separation layer 170 can be disposed on the second substrate 150 (e.g., the surface 151 of the second substrate 150) and have a plurality of openings 171. In some embodiments, the separation layer 170 can substantially overlap the black matrix layer 162, which can be located between the second substrate 150 and the separation layer 170. In some embodiments, the separation layer 170 can be located between the optical layer 160 (e.g., the black matrix layer 162) and the adhesive layer 140. In some embodiments, the separation layer 170 can include a plurality of openings 171, which can be configured to respectively accommodate the light conversion units 180. In some embodiments, the separation layer 170 can be substantially disposed corresponding to the non-light emitting areas 102, and the openings 171 can be substantially disposed corresponding to the light emitting areas 101. In other words, in the normal direction of the first substrate 110, the separation layer 170 can overlap the non-light emitting areas 102, and the openings 171 can overlap the light emitting areas 101. In some embodiments, the material of the separation layer 170 can include light-absorbing and / or reflective materials, such as photoresist, black matrix (BM), metal materials, other suitable materials, or combinations thereof, but is not limited thereto.

[0062] In some embodiments, the light conversion units 180 can be disposed on the second substrate 150 (e.g., the surface 151 of the second substrate 150), which can be disposed, for example, within the openings 171 of the separation layer 170. The light conversion units 180 described above can be disposed, for example, within the openings 171 of the separation layer 170, without limiting the upper surface TS3 of the separation layer 170 to protrude beyond the upper surface TS4 of the light conversion units 180. The upper surface TS3 of the separation layer 170 can be optionally cut flush with or below the upper surface TS4 of the light conversion units 180.

[0063] In some embodiments, the optical layer 160 (e.g., the color filter layer 161) can be located between the second substrate 150 and the light conversion units 180. In some embodiments, the light conversion units 180 can be located between the optical layer 160 and the adhesive layer 140. In some embodiments, the light conversion units 180 can substantially correspond to the light emitting areas 101, i.e., in the normal direction of the first substrate 110, the light conversion units 180 can overlap the light emitting areas 101. In some embodiments, the light conversion units 180 can be configured to convert the first light provided by the light emitting units 130 into second light, the first light having a first peak wavelength, the second light having a second peak wavelength, and the first peak wavelength being smaller than the second peak wavelength.

[0064] In some embodiments, the light conversion unit 180 can include a polymer 181, a plurality of light conversion particles 182, a plurality of first heat dissipation particles 183, and / or a plurality of scattering particles 184, but is not limited thereto. In some embodiments, the light conversion particles 182 can include quantum dots, fluorescence, phosphorescence, other suitable materials, or combinations thereof, but is not limited thereto. In some embodiments, the plurality of scattering particles 184 can include titanium oxide (TiO2), other suitable scattering materials, or combinations thereof, but is not limited thereto.

[0065] In some embodiments, the plurality of first heat dissipation particles 183 can have a particle size of, for example, between 10 nanometers and 10 micrometers (10 nanometers ≦ particle size ≦ 10 micrometers), such as between 50 nanometers and 8 micrometers (50 nanometers ≦ particle size ≦ 8 micrometers), between 100 nanometers and 5 micrometers (100 nanometers ≦ particle size ≦ 5 micrometers), but is not limited thereto. In some embodiments, the first heat dissipation particles 183 can include boron nitride (BN), aluminum nitride (AIN), silicon carbide (SiC), silicon nitride (Si3N4), beryllium oxide (BeO), aluminum oxide (AI2O3), other suitable heat dissipation materials, but is not limited thereto. In some embodiments, the plurality of first heat dissipation particles 183 can have a thermal conductivity of, for example, greater than 50 W·m -1 ·K -1 , such as between 50 W·m -1 ·K -1 and 1000 W·m -1 ·K -1 (50 W·m -1 ·K -1 ≦ thermal conductivity ≦ 1000 W·m -1 ·K -1 ), but is not limited thereto, which can assist the light conversion unit 180 or the light emitting unit 130 in heat dissipation, but is not limited thereto. For example, boron nitride has a thermal conductivity of about 185-300 W·m -1 ·K -1 , aluminum nitride has a thermal conductivity of about 150-220 W·m -1 ·K -1 , silicon carbide has a thermal conductivity of about 340 W·m -1 ·K -1 , beryllium oxide has a thermal conductivity of about 260-300 W·m -1 ·K -1 , but is not limited thereto. It should be noted that the ranges of thermal conductivities of the above-mentioned materials are merely examples.

[0066] Since the plurality of first heat dissipation particles 183 disposed in the light conversion unit 180 can help the light conversion unit 180 or the light emitting unit 130 dissipate heat, reduce the heat generated by the light conversion unit 180 or the light emitting unit 130, and increase the service life of the light conversion unit 180 or the light emitting unit 130, thereby increasing the service life of the display panel 100.

[0067] In some embodiments, the content of the plurality of light conversion particles 182, for example, the weight percentage of the light conversion particles 182 in the light conversion unit 180, is between 15% and 40% (15%≦content of light conversion particles 182≦40%), for example, between 20% and 35% (20%≦content of light conversion particles 182≦35%), 22% and 38% (22%≦content of light conversion particles 182≦38%), but is not limited thereto. In some embodiments, the content of the plurality of first heat dissipation particles 183, for example, the weight percentage of the first heat dissipation particles 183 in the light conversion unit 180, is between 1% and 25% (1%≦content of first heat dissipation particles 183≦25%), for example, between 5% and 20% (5%≦content of first heat dissipation particles 183≦20%), 8% and 17% (8%≦content of first heat dissipation particles 183≦17%), but is not limited thereto. In some embodiments, when the content of the plurality of first heat dissipation particles 183 is greater than 25% of the weight percentage of the light conversion unit 180, it can cause the content of the plurality of light conversion particles 182 to be insufficient, resulting in poor light conversion efficiency, and can also cause the content of the polymer 181 to be insufficient, resulting in a fragile structure of the light conversion unit 180. In some embodiments, the light conversion unit 180 can further include a plurality of scattering particles 184, and the total content of the plurality of first heat dissipation particles 183 and the plurality of scattering particles 184, for example, the weight percentage of the total content of the first heat dissipation particles 183 and the scattering particles 184 in the light conversion unit 180, is between 5% and 50% (5%≦total content of first heat dissipation particles 183 and scattering particles 184≦50%), for example, between 10% and 40% (10%≦total content of first heat dissipation particles 183 and scattering particles 184≦40%), 15% and 35% (15%≦total content of first heat dissipation particles 183 and scattering particles 184≦35%), but is not limited thereto.

[0068] In some embodiments, the light conversion units 180 in the light-emitting units 130 corresponding to different colors may each use a plurality of first heat dissipation particles 183 at different or equal concentrations, but the present invention is not limited thereto. For example, the concentration of the plurality of first heat dissipation particles 183 in the light conversion unit 180 corresponding to a green LED may be greater than the concentration of the plurality of first heat dissipation particles 183 in the light conversion unit 180 corresponding to a red LED, or the concentration of the plurality of first heat dissipation particles 183 in the light conversion unit 180 corresponding to a red LED may be greater than the concentration of the plurality of first heat dissipation particles 183 in the light conversion unit 180 corresponding to a blue LED, but the present invention is not limited thereto.

[0069] The following examples are provided for illustration purposes only. It should be noted that the following examples share the same component numbers and some of the details as the previous examples, with the same numbers used to represent the same or similar components, and descriptions of the same technical details omitted. For the omitted details, please refer to the previous examples, and the following examples will not be repeated.

[0070] Figure 2 This is a partial cross-sectional diagram of a display panel according to another embodiment of the present disclosure. Figure 1B and Figure 2 The display panel 100a of this embodiment is substantially similar to Figure 1B Therefore, the same or similar components of the two embodiments will not be repeated here. The display panel 100a of this embodiment differs from the display panel 100 mainly in that, in the display panel 100a of this embodiment, the pixel definition layer 120a may include a plurality of second heat dissipation particles 122 and / or a plurality of first light absorbing particles 123.

[0071] In some embodiments, the thermal conductivity of the second heat dissipation particles 122 may be similar to that of the first heat dissipation particles 183 , which will not be repeated here, to help dissipate heat from the light conversion unit 180 or the light emitting unit 130 , but the present invention is not limited thereto.

[0072] In some embodiments, the first light absorbing particles 123 may include, but are not limited to, carbon, color dyes, other suitable light absorbing materials, or combinations thereof. In some embodiments, the pixel definition layer 120a may further include scattering particles, or the first light absorbing particles 123 in the pixel definition layer 120a may be replaced with scattering particles, for example, but are not limited thereto.

[0073] Figure 3 This is a partial cross-sectional diagram of a display panel according to another embodiment of the present disclosure. Figure 1B and Figure 3 The display panel 100b of this embodiment is substantially similar to Figure 1BTherefore, the same or similar components in the two embodiments will not be repeated here. The display panel 100b of this embodiment differs from the display panel 100 mainly in that, in the display panel 100b of this embodiment, the spacer layer 170a may include a plurality of third heat dissipation particles 172 and / or a plurality of second light absorbing particles 173.

[0074] In some embodiments, the first light absorbing particles 123 and / or the second light absorbing particles 173 may include, but are not limited to, carbon, colored dyes, other suitable light absorbing materials, or combinations thereof. In some embodiments, the spacer layer 170a may include scattering particles, or the second light absorbing particles 173 in the spacer layer 170a may be replaced with scattering particles, but are not limited thereto.

[0075] Figure 4 This is a partial cross-sectional diagram of a display panel according to another embodiment of the present disclosure. Figure 1B and Figure 4 The display panel 100c of this embodiment is substantially similar to Figure 1B Therefore, the same and similar components in the two embodiments are not repeated here. The display panel 100c of this embodiment is different from the display panel 100 mainly in that, in the display panel 100c of this embodiment, the adhesive layer 140a may include a plurality of fourth heat dissipation particles 141.

[0076] It should be noted that the particle size, material and / or thermal conductivity of the first heat dissipation particles 183, the second heat dissipation particles 122, the third heat dissipation particles 172 and / or the fourth heat dissipation particles 141 disclosed herein can be the same or different, so they will not be repeated. These heat dissipation particles can help dissipate heat from the display panel 100c.

[0077] Figure 5 This is a partial cross-sectional diagram of a display panel according to another embodiment of the present disclosure. Figure 2 and Figure 5 The display panel 100d of this embodiment is substantially similar to Figure 2 Therefore, the same and similar components in the two embodiments are not repeated here. The display panel 100d of this embodiment is different from the display panel 100a mainly in that the display panel 100d of this embodiment does not include the separation layer 170 and / or the light conversion unit 180 of the display panel 100a.

[0078] Specifically, please refer to Figure 5The display panel 100d of the present embodiment has a light-out area 101 and a non-light-out area 102, and includes a first substrate 110, a pixel definition layer 120d, a light emitting unit 130, a glue layer 140, a second substrate 150, and / or an optical layer 160, but is not limited thereto. The pixel definition layer 120d may, for example, be disposed on the first substrate 110 (e.g., the surface 111 of the first substrate 110), and may, for example, include an opening 121 for accommodating the light emitting unit 130, and may, for example, further include a plurality of first light absorbing particles 123 and / or a plurality of heat dissipating particles 124, but is not limited thereto. In some embodiments, the plurality of heat dissipating particles 124 may, for example, have a particle size, material, or thermal conductivity as described above with reference to the first heat dissipating particles 183, which will not be repeated here. In some embodiments, the pixel definition layer 120d may, for example, include scattering particles, or the first light absorbing particles 123 in the pixel definition layer 120d may, for example, be replaced by scattering particles, but is not limited thereto.

[0079] In some embodiments, the optical layer 160 may, for example, include a color filter layer 161 and a black matrix layer 162, and the black matrix layer 162 may, for example, have a plurality of openings 1620 for respectively accommodating the color filter layer 161. In some embodiments, the black matrix layer 162 may, for example, be disposed substantially corresponding to the non-light-out area 102, and the openings 1620 may, for example, substantially correspond to the light-out area 101. In other words, in the normal direction of the first substrate 110, the black matrix layer 162 may, for example, overlap the non-light-out area 102, and the openings 1620 may, for example, overlap the light-out area 101.

[0080] In some embodiments, the optical layer 160 may, for example, be disposed between the second substrate 150 and the glue layer 140. In some embodiments, the optical layer 160 may, for example, contact the glue layer 140.

[0081] Figure 6 A partial cross-sectional schematic view of a display panel of another embodiment of the present disclosure is shown. Please refer to FIG. 1C simultaneously. Figure 5 and Figure 6 The display panel 100e of the present embodiment is substantially similar to the display panel 100d of Figure 5 , and thus the same and similar components in the two embodiments will not be repeated here. The display panel 100e of the present embodiment is different from the display panel 100d mainly in that the glue layer 140e may, for example, include a plurality of heat dissipating particles 142. In some embodiments, the pixel definition layer 120d may, for example, include a plurality of first light absorbing particles 123 and / or a plurality of heat dissipating particles 124. In some embodiments, at least one of the pixel definition layer 120d and the glue layer 140e may, for example, be selectively caused to include a plurality of heat dissipating particles, which is helpful to the heat dissipation effect of the light emitting unit 130.

[0082] Figure 7This is a partial cross-sectional diagram of a display panel according to another embodiment of the present disclosure. Figure 6 and Figure 7 The display panel 100f of this embodiment is roughly similar to Figure 6 Therefore, the same or similar components of the two embodiments will not be repeated here. The display panel 100f of this embodiment differs from the display panel 100e primarily in that the display panel 100f of this embodiment may not include the pixel definition layer 120d, and the adhesive layer 140f may include a plurality of heat dissipation particles 142. In some embodiments, the light-emitting unit 130 may include, for example, red, green, blue, white LEDs, ultraviolet LEDs (UV LEDs), and / or other suitable color LEDs, but is not limited thereto.

[0083] In summary, in a display panel according to an embodiment of the present disclosure, since the light conversion unit includes a plurality of heat dissipation particles (such as first heat dissipation particles), the thermal conductivity of the plurality of first heat dissipation particles is greater than 50 W·m -1 ·K -1 , which can help the light conversion unit or the light emitting unit in the display panel to dissipate heat, thereby increasing the service life of the display panel. In addition to the light conversion unit including multiple heat dissipation particles (such as first heat dissipation particles), the pixel definition layer may include multiple heat dissipation particles (such as second heat dissipation particles), the separation layer may include multiple heat dissipation particles (such as third heat dissipation particles) and / or the adhesive layer may include multiple heat dissipation particles (such as fourth heat dissipation particles), or other suitable layers may include multiple heat dissipation particles, which can reduce the heat generated by the light conversion unit or the light emitting unit, thereby increasing the service life of the display panel. In addition, in another display panel of the present embodiment, since at least one of the pixel definition layer and the adhesive layer may include multiple heat dissipation particles, and the thermal conductivity of the multiple heat dissipation particles is greater than 50W·m -1 ·K -1 , which can help the light-emitting units in the display panel dissipate heat and increase the service life of the display panel.

[0084] It is noted that the range of the weight percentage of the A material or particles in a certain element (or layer) mentioned in the embodiments of the present disclosure can be detected, for example, by energy-dispersive X-ray spectroscopy (EDS), but is not limited thereto. The element ratio of the first heat dissipation particles 183 in the light conversion unit 180 can be detected by energy-dispersive X-ray spectroscopy, for example, when the weight percentage of the plurality of first heat dissipation particles in the light conversion unit 180 is between 1% and 25%. For example, when the first heat dissipation particles 183 are boron nitride (BN), the weight percentage of the first heat dissipation particles 183 can be calculated by calculating the element ratio of boron and nitrogen in the light conversion unit 180 to the total element in the light conversion unit 180, but is not limited thereto. In addition, since the A material or particles can be substantially uniformly distributed in a certain element or layer, the measurement can be performed on a local part of the element (or layer), for example, and it is not necessary to take the entire element (or layer).

[0085] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present disclosure, and not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still combine, modify or replace part or all of the technical features of the technical solutions described in the foregoing embodiments; and these combinations, modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A display panel, characterized by, Comprising: a first substrate; a light emitting unit disposed on the first substrate; a pixel definition layer disposed on the first substrate and comprising a first opening for accommodating the light emitting unit; a glue layer disposed on the first substrate and for covering the light emitting unit; a light conversion unit for converting a first light provided by the light emitting unit into a second light, wherein the first light has a first peak wavelength and the second light has a second peak wavelength, and the first peak wavelength is smaller than the second peak wavelength, The light conversion unit includes a plurality of light conversion particles and a plurality of first heat dissipation particles, the plurality of first heat dissipation particles are arranged in the light conversion unit, and the thermal conductivity of the plurality of first heat dissipation particles is greater than 50 W·m -1 ·K -1 ; and a separation layer comprising a second opening for accommodating the light conversion unit, a plurality of second heat dissipation particles, and a plurality of first light absorption particles.

2. The display panel of claim 1, wherein, The plurality of first heat dissipation particles has a weight percentage in the light conversion unit between 1% and 25%, and a particle size between 10 nanometers and 10 micrometers.

3. The display panel of claim 1, wherein, The material of the plurality of first heat dissipation particles comprises boron nitride, aluminum nitride, silicon carbide, silicon nitride, beryllium oxide, or aluminum oxide.

4. The display panel of claim 1, wherein, The light conversion unit further comprises a polymer, the plurality of light conversion particles are disposed in the polymer, and the plurality of first heat dissipation particles are disposed in the polymer.

5. The display panel of claim 4, wherein, The light conversion unit further comprises a plurality of scattering particles, the plurality of scattering particles are disposed in the polymer, and the plurality of first heat dissipation particles and the plurality of scattering particles have a weight percentage in the light conversion unit between 5% and 50%.

6. The display panel of claim 1, wherein, The pixel definition layer further comprises a plurality of third heat dissipation particles.

7. The display panel of claim 6, wherein, The pixel definition layer further comprises a plurality of second light absorption particles.

8. The display panel of claim 1, wherein, Further comprising: a second substrate opposite to the first substrate, wherein the first substrate and the second substrate are attached to each other by the glue layer, and the glue layer comprises a plurality of fourth heat dissipation particles.

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