Display device

Abstract

The present disclosure provides a display device, which includes a substrate, a plurality of light-emitting elements disposed on the substrate, a touch electrode disposed on the substrate, and an arc-shaped edge disposed on the substrate, wherein a first wire is electrically connected to at least one of the plurality of light-emitting elements, and in a top view direction, the first wire is disposed between two adjacent light-emitting units.

Description

[0001] This application is a divisional application of the invention patent application filed on May 3, 2018, with application number 201810413284.5, and the invention name is “Display Device”. Technical Field

[0002] The present disclosure relates to a display device, and in particular to a display device including a light emitting diode. Background Art

[0003] With the development of digital technology, display devices have been widely used in all aspects of daily life. For example, they have been widely used in modern information devices such as televisions, notebook computers, computers, mobile phones (such as smart phones), and these display devices are constantly developing in the direction of being light, thin, short and fashionable.

[0004] Among various types of display devices, light emitting diode (LED) display devices are becoming increasingly popular due to their advantages such as high performance and long service life.

[0005] However, existing LED display devices are not satisfactory in all aspects. For example, when forming a curved display device, the wires or conductive electrodes are easily broken. Summary of the invention

[0006] Some embodiments of the present disclosure provide a display device, which includes a substrate, a plurality of light-emitting elements disposed on the substrate, a touch electrode disposed on the substrate, and an arc-shaped edge disposed on the substrate, wherein the first wire is electrically connected to at least one of the plurality of light-emitting elements, and in a top view direction, the first wire is disposed between two adjacent light-emitting units. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein:

[0008] Figure 1A is a side view of a curved display device 10 according to some embodiments of the present disclosure.

[0009] Figure 1B FIG. 1 is a side view of a curved display device 10 ′ according to some embodiments of the present disclosure.

[0010] Figure 2A FIG. 2 is a top view of the display device 20 according to the first embodiment of the present disclosure.

[0011] Figure 2B2 is a top view of a portion of a display area 202 of a display device 20 according to some embodiments of the present disclosure.

[0012] Figure 2C 2 is a top view of a portion of a display area 202 of a display device 20 according to some embodiments of the present disclosure.

[0013] Figure 2D 2 is a top view of a portion of a display area 202 of a display device 20 according to some embodiments of the present disclosure.

[0014] Figure 2E 2 is a top view of a portion of a display area 202 of a display device 20 according to some embodiments of the present disclosure.

[0015] Figure 2F is a top view of a portion of a wire 208 according to some embodiments of the present disclosure.

[0016] Figure 2G is a top view of a portion of a wire 208 according to some embodiments of the present disclosure.

[0017] Figure 2H 2 is a top view of a display device 20 according to some embodiments of the present disclosure.

[0018] Fig.2I 2 is a top view of a display device 20 according to some embodiments of the present disclosure.

[0019] Figure 2J 2 is a top view of a display device 20 according to some embodiments of the present disclosure.

[0020] Figure 3A FIG. 2 is a top view of a portion of a display area 202 of a display device 30 according to a second embodiment of the present disclosure.

[0021] Figure 3B 2 is a top view of a portion of the display area 202 of the display device 30 according to some embodiments of the present disclosure.

[0022] Figure 3C 2 is a top view of a portion of the display area 202 of the display device 30 according to some embodiments of the present disclosure.

[0023] Figure 3D is a top view of a portion of a conductive electrode 210 according to some embodiments of the present disclosure.

[0024] Figure 3E is a top view of a portion of a conductive electrode 210 according to some embodiments of the present disclosure.

[0025] Figure 4A is a cross-sectional view of a display device 40 according to some embodiments of the present disclosure.

[0026] Figure 4B is a cross-sectional view of a display device 40 according to some embodiments of the present disclosure.

[0027] Figure 4C is a cross-sectional view of a display device 40 according to some embodiments of the present disclosure.

[0028] Figure 5 is a cross-sectional view of a display device 50 according to a third embodiment of the present disclosure.

[0029] Fig. 6A is a side view of a display device 60 according to a fourth embodiment of the present disclosure.

[0030] Figure 6B FIG. 7 is a side view of a display device 70 according to an embodiment of the present disclosure.

[0031] Fig. 7A FIG. 8 is a top view of a display device 80 according to a fifth embodiment of the present disclosure.

[0032] Figure 7B 1 is a top view of a display device 80 according to some embodiments of the present disclosure.

[0033] Figure 7C 1 is a top view of a display device 80 according to some embodiments of the present disclosure.

[0034] Explanation of symbols:

[0035] 10, 10'~Curved display device

[0036] 20, 30, 40, 50, 60, 70, 80~Display device

[0037] 60a, 60b, 70a, 70b, 80a, 80b~part of the display device

[0038] 100, 100'~Bent part

[0039] 200~Substrate

[0040] 200a~First edge

[0041] 200b~Second edge

[0042] 202~Display area

[0043] 204~Non-display area

[0044] 206, 206a, 206b - light emitting element

[0045] 208~Wire

[0046] 208a~Edge of the wire

[0047] 208a'~Straight part of the edge of the wire

[0048] 208a”~The wavy part of the edge of the wire

[0049] 210~Conductive electrode

[0050] 210a~Edge of conductive electrode

[0051] 210a'~straight portion of the edge of the conductive electrode

[0052] 210a"~The wavy part of the edge of the conductive electrode

[0053] 212~Sub-pixel

[0054] 214~Opening

[0055] 214a~First curved portion of the opening

[0056] 216~Integrated Circuit

[0057] 218, 224 ~ Shared line

[0058] 220~Printed circuit board

[0059] 222~Gate drive circuit

[0060] 222'~Multiplex Decoder

[0061] 302~Opening

[0062] 302a~First curved portion of the opening

[0063] 400~Substrate

[0064] 402~Buffer layer

[0065] 404~Semiconductor layer

[0066] 404a~doping region

[0067] 406~Gate insulation layer

[0068] 408~Gate electrode

[0069] 410~First insulation layer

[0070] 412~Second insulation layer

[0071] 414~Third insulation layer

[0072] 414a~Depression or groove of the third insulating layer

[0073] 416~Pixel definition layer

[0074] 416a - First portion of pixel definition layer

[0075] 416b - Second part of pixel definition layer

[0076] 418~Wire

[0077] 420~Reflection layer

[0078] 422~Filling material

[0079] 424~Light-emitting element

[0080] 426~Fourth insulation layer

[0081] 426a~first part of the fourth insulating layer

[0082] 426b~Second part of the fourth insulating layer

[0083] 428~Conductive Electrode

[0084] 428a~Touch electrode

[0085] 428b~Common Electrode

[0086] 430~Insulation layer

[0087] 432~Touch electrode

[0088] 434~Conductive structure

[0089] 800~Substrate

[0090] 802~Conductive electrode or wire

[0091] 802a~Narrow portion of a conductive electrode or wire

[0092] 802b~Portion of a conductive electrode or conductor

[0093] 804~Open

[0094] D1~First distance

[0095] L1~Extension length of the wire

[0096] T1, T2, T3, T4~Thickness

[0097] W1, W2~Width DETAILED DESCRIPTION

[0098] The following disclosure provides many different embodiments or examples to implement the different features of the present invention. The following disclosure describes specific examples of various components and their arrangements to simplify the description. Of course, these specific examples are not intended to be limiting. For example, if the present disclosure describes a first feature formed on or above a second feature, it means that it may include an embodiment in which the first feature and the second feature are in direct contact, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. In addition, the different examples disclosed below may reuse the same reference symbols and / or marks. These repetitions are for the purpose of simplification and clarity, and are not intended to limit the specific relationship between the different embodiments and / or structures discussed.

[0099] Some embodiments of the present disclosure are described below. For ease of description, similar element numbers may be used to identify similar elements. It should be understood that additional operating steps may be implemented before, between, or after the method, and in other embodiments of the method, some operating steps may be replaced or omitted.

[0100] Figure 1A FIG. 1 is a side view of a curved display device 10 according to some embodiments of the present disclosure. Figure 1A As shown, the curved display device 10 includes one or more curved portions 100. For example, the curved portion 100 may include an end portion of the display device 10. In some embodiments, Figure 1A As shown, the curved portions 100 (eg, two curved portions 100 ) are symmetrical with respect to the center line C of the curved display device 10 .

[0101] Figure 1B FIG. 1 is a side view of another curved display device 10 ′ according to an embodiment of the present disclosure. Figure 1B As shown, the curved display device 10 ′ may have a curved portion 100 ′ that includes a central portion of the display device 10 ′.

[0102] It should be noted that the curved display device (eg, the curved display device 10 or the curved display device 10 ′) of some embodiments of the present disclosure may be a foldable display device. However, in other embodiments, the shape of the curved display device is substantially fixed.

[0103] [First embodiment]

[0104] The first embodiment of the present disclosure provides some display devices, which can be used to form a curved display device. The conductive lines of the display devices of the first embodiment can have a wavy shape and / or include one or more openings, and the formation of cracks can be avoided or reduced in the step of using these display devices to form a curved display device.

[0105] Figure 2A 1 is a top view of a display device 20 according to a first embodiment of the present disclosure. The display device 20 can be used to form a curved display device (e.g., a curved display device having a side view that is the same as or similar to the curved display device 10 or 10' described above). For example, the display device 20 can be bent to form a curved display device.

[0106] like Figure 2A As shown, the display device 20 may include a display area 202 and a non-display area 204 adjacent to the display area 202. For example, Figure 2A As shown, the non-display area 204 may surround / enclose the display area 202. The display area 202 may refer to a display area in the display device 20 where a light-emitting element (e.g., a light-emitting diode) is disposed. On the other hand, the non-display area 204 refers to an area outside the display area 202 in the display device 20. For example, an integrated circuit (IC), a demultiplexer (DEMUX), a gate driver on panel (GOP), other appropriate devices or elements, or a combination of the above may be disposed in the non-display area 204. For example, the device or element disposed in the non-display area 204 may be electrically connected to the light-emitting element (e.g., a light-emitting diode) disposed in the display area 202 to provide some advantageous functions (e.g., providing a driving signal to the light-emitting element disposed in the display area 202).

[0107] like Figure 2A As shown, the display device 20 includes a substrate 200 having a first edge 200a and a second edge 200b opposite to the first edge 200a. In some embodiments, the first edge 200a and the second edge 200b are substantially parallel to each other and separated from each other by a first distance D1 (e.g., 5 cm to 10 cm). For example, the substrate 200 of the display device 20 may include polyimide, glass, other suitable materials, or a combination thereof. It should be noted that the components of the display device 20 formed on the substrate 200 are not shown in the figure. Figure 2A , which will be discussed in the following paragraphs.

[0108] Then, if Figure 2BAs shown, it depicts a top view of a portion of the display area 202 of the display device 20. Figure 2B As shown, the display area 202 may include a plurality of light emitting elements 206 (eg, light emitting diodes), one or more conductive lines 208 , and one or more conductive electrodes 210 .

[0109] In the present embodiment, the sub-pixel 212 has two light-emitting elements 206 (e.g., light-emitting diodes). However, in other embodiments, the sub-pixel 212 may have less than or more than two light-emitting elements 206 of the same color. In some embodiments, adjacent sub-pixels 212 (e.g., three sub-pixels 212) may form a pixel. For example, the pixel may include sub-pixels 212 including light-emitting elements 206 of different colors (e.g., red, green, blue, or a combination thereof).

[0110] For example, the material of the conductive electrode 210 may include but is not limited to ITO (indium tin oxide), SnO (tin oxide), IZO (indium zinc oxide), IGZO (indium gallium zinc oxide), ITZO (indium tin zinc oxide), ATO (antimony tin oxide), AZO (antimony zinc oxide), metal or a combination thereof. For example, the material of the conductive line 208 may include but is not limited to ITO (indium tin oxide), SnO (tin oxide), IZO (indium zinc oxide), IGZO (indium gallium zinc oxide), ITZO (indium tin zinc oxide), ATO (antimony tin oxide), AZO (antimony zinc oxide), metal or a combination thereof. For example, the conductive electrode 210 and the conductive line 208 may each be formed by a deposition process and a subsequent photolithography process and an etching process.

[0111] In some embodiments, the conductive line 208 may be a common line, the conductive electrode 210 may be a common electrode, and the conductive line 208 may be electrically connected to one of the plurality of light-emitting elements 206 via the conductive electrode 210 .

[0112] In some embodiments, the one or more conductive electrodes 210 may be disposed on the one or more conductive wires 208 and the plurality of light emitting elements 206. In other words, the one or more conductive wires 208 and the plurality of light emitting elements 206 may be disposed between the substrate 200 and the one or more conductive electrodes 210.

[0113] In some embodiments, the wire 208 may have a wavy shape. Figure 2B As shown, the wire 208 may include an undulating edge 208a (e.g., a undulating edge extending in a direction substantially perpendicular to the first edge 200a and / or the second edge 200b of the substrate 200), and cracks formed in the wire 208 may be avoided or reduced during the step of forming a curved display device (e.g., bending the display device 20 to form a curved display device).

[0114] In some embodiments, Figure 2B As shown, the conductive line 208 may be arranged along a substantially perpendicular direction to the substrate 200 (see Figure 2A ), and the extension length L1 of the conductive line 208 (e.g., the distance measured in the direction perpendicular to the first edge 200a and / or the second edge 200b of the substrate 200) may be greater than or equal to half of the first distance D1 and less than or equal to the first distance D1 (i.e., 0.5D1≦L1≦D1). In some embodiments, because the extension length L1 is greater than or equal to half of the first distance D1 and less than or equal to the first distance D1, better device performance can be obtained.

[0115] Figure 2C , 2D 2E, 2F and 2G illustrate the conductive line 208 of some embodiments of the present disclosure, which can also avoid or reduce the formation of cracks in the step of forming a curved display device.

[0116] like Figure 2C shown, shown in Figure 2C and Figure 2B One of the differences of the embodiment of Figure 2C The conductive line 208 in the embodiment further includes one or more openings 214. For example, a patterning process (including a photolithography process and a subsequent etching process) can be used to form one or more openings 214 in the conductive line 208. In some embodiments, the shape of the opening 214 can include a first curved portion 214a (e.g., a rounded corner of the rectangular opening 214), which can further enhance the mechanical properties of the conductive line 208. In other embodiments, the opening 214 can also be substantially oval-shaped (e.g., Figure 2DAs shown), square, rectangle, circle, oblong, triangle, polygon, irregular shape, other suitable shapes or combinations thereof.

[0117] like Figure 2E As shown, Figure 2C and Figure 2E One difference between the embodiments shown in Figure 2E The conductive line 208 in the embodiment includes a substantially straight edge 208a (eg, a straight edge extending in a direction substantially perpendicular to the first edge 200a and / or the second edge 200b of the substrate 200). Figure 2E The opening 214 of the embodiment shown in the figure may also be substantially elliptical, square, rectangular, circular, oblong, triangular, polygonal, irregular, other appropriate shapes or combinations thereof.

[0118] In some embodiments, Figure 2C , 2D As shown in FIG. 2E , the one or more openings 214 may be located between adjacent conductive electrodes 210 .

[0119] In some embodiments, Figure 2F As shown, a single conductive line 208 may include a plurality of openings 214 of different shapes or sizes to increase design flexibility.

[0120] In some embodiments, Figure 2G As shown, the edge 208a of the wire 208 is partially wavy. For example, the edge 208a of the wire 208 may include a substantially straight portion 208a' and a wavy portion 208a", and the wavy portion may be provided on a portion that is more fragile and easily broken.

[0121] In some embodiments, the conductive line 208 is a common line that can be used to transmit a common signal from an integrated circuit disposed in the non-display area 204 of the display device 20 to the light-emitting element 206 disposed in the display area 202 of the display device 20. For example, Figure 2H As shown, the common signal can be transmitted from the integrated circuit 216 to the display area 202 of the display device 20 via the common line 208 in a direction substantially perpendicular to the first edge 200a and / or the second edge 200b of the substrate 200. Figure 2HAs shown, the common line 208 can be electrically connected to the integrated circuit 216 via another common line 218 disposed in the non-display area 204 of the substrate 200. In some embodiments, like the common line 208 described above, the common line 218 can also have a wavy shape and / or include a plurality of openings. In some embodiments, the common line 218 and the common line 208 can be disposed in different layers. In such a case, one or more vias can be used to electrically connect the common line 218 to the common line 208. In some embodiments, the common line 218 and the common line 208 can be disposed in the same layer, and the common line 218 and the common line 208 can be formed by the same process (for example, a deposition process, a photolithography process, an etching process, other appropriate processes, or a combination of the above). As Figure 2H As shown, the multiplexer 222' electrically connected to the integrated circuit 216 and the panel gate driver 222 electrically connected to the integrated circuit 216 can also be disposed in the non-display area 204 of the display device 20. In addition, as shown in FIG. Figure 2H As shown, the integrated circuit 216 may be electrically connected to a printed circuit board 220 .

[0122] In some embodiments, Fig.2I As shown, the common signal can be transmitted from the integrated circuit 216 to the display area 202 of the display device 20 via the common line 224 extending in a direction substantially parallel to the first edge 200a and / or the second edge 200b of the substrate 200, so that the common signal is transmitted from a direction substantially parallel to the first edge 200a and / or the second edge 200b to the display area 202 of the display device 20. In some embodiments, like the common line 208 described above, the common line 224 can also have a wavy shape and / or include a plurality of openings.

[0123] In some embodiments, Figure 2J As shown, the common signal can be transmitted to the display area 202 of the display device 20 via the common line 208 extending in a direction substantially perpendicular to the first edge 200a and / or the second edge 200b of the substrate 200 and the common line 224 extending in a direction substantially parallel to the first edge 200a and / or the second edge 200b of the substrate 200. In other words, the common signal can be transmitted to the display area 202 of the display device 20 via two directions substantially perpendicular to each other.

[0124] It should be understood that Figure 2H , 2I 2J are top views of display devices according to some embodiments of the present disclosure, and the elements shown in these figures may be disposed on the same layer or different layers.

[0125] It should be noted that the curved display device formed by the display device of the above embodiment may include the same or similar technical features as the display device of the above embodiment. For example, the wires in the curved display device formed by the display device of the above embodiment may still have a wavy shape and / or include one or more openings. These curved display devices should be included in the scope of the present disclosure.

[0126] [Second embodiment]

[0127] Figure 3A 2 is a top view of a portion of a display area 202 of a display device 30 according to a second embodiment of the present disclosure. One difference between the second embodiment and the above embodiments is that one or more conductive electrodes 210 (e.g., a common electrode) may have a wavy shape and / or include one or more openings, so that cracks may be avoided or reduced in the one or more conductive electrodes during the step of forming a curved display device (e.g., bending the display device 30 to form a curved display device).

[0128] like Figure 3A As shown in FIG. 1 , the conductive electrode 210 may have a wavy shape. For example, Figure 3A As shown, the conductive electrode 210 may include a wavy edge 210 a (eg, a wavy edge extending in a direction substantially parallel to the first edge 200 a and / or the second edge 200 b of the substrate 200 ).

[0129] In some embodiments, Figure 3B As shown, the conductive electrode 210 may have one or more openings 302. For example, a patterning process (including a photolithography process and a subsequent etching process) may be used to form one or more openings 302 in the conductive electrode 210. In some embodiments, the opening 302 may have a shape, which may include a first curved portion 302a (e.g., a rounded corner of the rectangular opening 302), which may further enhance the mechanical properties of the conductive electrode 210. In other embodiments, the opening 302 may also be substantially elliptical, square, rectangular, circular, oblong, triangular, polygonal, irregular, other appropriate shapes, or combinations thereof.

[0130] In some embodiments, Figure 3B As shown, the area of ​​one of the openings 302 is smaller than the area of ​​one of the light emitting elements 206 (eg, the area of ​​the bottom surface or the top surface of one of the light emitting diodes 206 ), which can further improve the mechanical properties of the conductive electrode 210 .

[0131] In some embodiments, Figure 3CAs shown, a single bulk conductive electrode 210 may be provided, which may include a plurality of openings 302. In addition, the single conductive electrode 210 may cover a plurality of sub-pixels 212.

[0132] In some embodiments, Figure 3A , 3B As shown in FIG3C , the conductive electrode 210 completely covers the light emitting element 206 .

[0133] Figure 3D and 3E According to some embodiments of the present disclosure, some conductive electrodes 210 are depicted, which can also avoid or reduce the formation of cracks in the step of forming a curved display device.

[0134] In some embodiments, Figure 3D As shown, a single conductive electrode 210 may include a plurality of openings 302 of different shapes or sizes to increase design flexibility.

[0135] In some embodiments, Figure 3E As shown, the edge 210a of the conductive electrode 210 is partially wavy. For example, the edge 210a of the conductive electrode 210 may include a substantially straight portion 210a' and a wavy portion 210a", and the wavy portion may be provided on a portion that is more fragile and easily cracked.

[0136] In some other embodiments, the design of the conductive electrode 210 (eg, the wave shape and / or the opening formed therein) can be applied to a common electrode, a touch electrode, other conductive electrodes, or a combination thereof of a display device, which will be described in detail in the following paragraphs.

[0137] Figure 4A 4 is a cross-sectional view of a display device 40 according to some embodiments of the present disclosure. The display device 40 can be used to form a curved display device (e.g., a curved display device having a side view that is the same or similar to the curved display device 10 or 10' described above). For example, the display device 40 can be bent to form a curved display device.

[0138] like Figure 4AAs shown, the display device 40 includes a substrate 400. For example, the substrate 400 may be formed of glass, polyimide, other suitable materials, or a combination thereof. A buffer layer 402 may be selectively formed on the substrate 400 to reduce lattice mismatch. For example, the buffer layer 402 may be formed of silicon oxide, silicon nitride, other suitable materials, or a combination thereof. A semiconductor layer 404 may be formed on the buffer layer 402. For example, the semiconductor layer 404 may include one or more doped regions 404a, which may serve as source / drain regions. A gate insulating layer 406 may be formed on the semiconductor layer 404. For example, the gate insulating layer 406 may be formed of silicon oxide, other suitable materials, or a combination thereof. One or more gate electrodes 408 may be formed on the gate insulating layer 406, and a first insulating layer 410 (e.g., silicon oxide) may be formed on the one or more gate electrodes 408. A second insulating layer 412 may be formed on the first insulating layer 410. For example, the second insulating layer 412 may be formed of a material different from that of the first insulating layer 410 (e.g., silicon nitride). The third insulating layer 414 may be formed on the second insulating layer 412. For example, the third insulating layer 414 may be formed of silicon nitride, an organic material (e.g., an acrylic based organic material), other suitable insulating materials, or a combination thereof. A pixel defining layer (PDL) 416 may be formed on the third insulating layer 414. For example, the pixel defining layer 416 (e.g., an insulating layer) may be formed of photosensitive polyimide, acrylic, siloxane, novolac materials, other suitable materials, or a combination thereof. The reflective layer 420 may be formed on the pixel defining layer 416. Figure 4A As shown, the reflective layer 420 may extend from the top surface of the pixel definition layer 416 into the pixel definition layer 416 and the third insulating layer 414. For example, the reflective layer 420 may be formed of a metal (e.g., Al or Ag), a metal alloy (e.g., an alloy of Al or Ag), other suitable materials, or a combination thereof. One or more light emitting elements 424 (e.g., light emitting diodes) may be formed on the reflective layer 420. Figure 4A As shown, the filling material 422 may be formed on the reflective layer 420 and surround the one or more light emitting elements 424. For example, the filling material 422 may be formed of an organic material, anisotropic conductive film (ACF) bonding material, other appropriate materials, or a combination thereof. In some embodiments, the filling material may include quantum dots. Figure 4AAs shown, one or more conductive lines 418 may be formed on the pixel definition layer 416. For example, like the conductive line 208 described above, the conductive line 418 may also have a wavy shape and / or include one or more openings. Figure 4A As shown, the display device 40 may also include a fourth insulating layer 426 formed on the conductive line 418, the light emitting element 424, and the pixel definition layer 416. For example, the fourth insulating layer 426 may be formed of an organic material, an inorganic / organic stacked layer (e.g., a SiNx / organic / SiNx stacked layer), other appropriate insulating materials, or a combination thereof. Figure 4A As shown, a conductive electrode 428 may be formed on the conductive line 418 , the light emitting element 424 , and the fourth insulating layer 426 , which may be configured to electrically connect the conductive line 418 to the light emitting element 424 .

[0139] like Figure 4A As shown, one or more conductive structures 434 may be formed in the display device 40 to electrically connect various components of the display device 40 .

[0140] In some embodiments, the conductive electrode 428 may include a common electrode, a touch electrode, or a combination thereof. As described above, the design of the conductive electrode 210 (e.g., a wave shape and / or an opening formed therein) may be applied to the conductive electrode 428 (e.g., a common electrode, a touch electrode, or a combination thereof), and the formation of cracks may be avoided or reduced in the step of forming a curved display device.

[0141] In some embodiments, a single block conductive electrode 428 can serve as both a common electrode and a touch electrode, so the path for transmitting the common signal can be the same as the path for transmitting the touch signal. Figure 4B As shown, the two conductive electrodes 428a and 428b can respectively serve as a touch electrode and a common electrode, so the path for transmitting the touch signal is different from the path for transmitting the common signal.

[0142] In some embodiments, the touch electrodes and the common electrodes may be formed in different layers. Figure 4C As shown, one or more touch electrodes 432 may be formed on the common electrode 428, and an insulating layer 430 may be formed between the one or more touch electrodes 432 and the common electrode 428. In some embodiments, as Figure 4C As shown, the one or more touch electrodes 432 and the light emitting element 424 do not overlap, so better device performance can be obtained.

[0143] It should be noted that, according to the application of the display device, more layers of conductive electrodes may be formed on the conductive electrode 428. For example, more layers of touch electrodes may be formed on the conductive electrode 428. Figure 4COn the common electrode 428 and the touch electrode 432 of the display device.

[0144] In some embodiments, Figure 4A As shown, the insulating layer (eg, insulating layer 414 ) below the light emitting element 424 may include a recess or groove (eg, 414 a ) formed therein, which may further reduce cracks formed in the display device during the step of forming the curved display device.

[0145] It should be noted that the curved display device formed by the display device of the above embodiment may include the same or similar technical features as the display device of the above embodiment. For example, in the curved display device formed by the display device of the above embodiment, the conductive electrode may still have a wavy shape and / or include one or more openings. These curved display devices should be included in the scope of the present disclosure.

[0146] [Third embodiment]

[0147] Figure 5 is a cross-sectional view of a display device 50 according to a third embodiment of the present disclosure. The display device 50 can be used to form a curved display device (e.g., a curved display device having a side view that is the same or similar to the curved display device 10 or 10' described above). For example, the display device 50 can be bent to form a curved display device.

[0148] The display device 50 may be similar to the display device of the above-mentioned embodiment (eg, the display device 40 ), and the differences between the display device 50 and the display device of the above-mentioned embodiment will be discussed in the following paragraphs.

[0149] like Figure 5 As shown, the pixel defining layer 416 may include a first portion 416a overlapping the conductive line 418, and a second portion 416b not overlapping the conductive line 418. Figure 5 As shown, the second portion 416b of the pixel defining layer 416 is adjacent to the first portion 416a of the pixel defining layer 416 (e.g., the insulating layer). In some embodiments, the thickness T1 of the first portion 416a may be greater than the thickness T2 of the second portion 416b (e.g., the minimum thickness of the second portion 416b), which may improve the mechanical properties of the display device 50 (e.g., avoiding or reducing cracks formed in the display device 50 during the step of bending the display device 50 to form a curved display device).

[0150] like Figure 5 As shown, the fourth insulating layer 426 may include a first portion 426a overlapping the conductive electrode 428, and a second portion 426b not overlapping the conductive electrode 428. Figure 5As shown, the second portion 426b of the fourth insulating layer 426 is adjacent to the first portion 426a of the fourth insulating layer 426. In some embodiments, the thickness T4 of the second portion 426b may be greater than the thickness T3 of the first portion 426a (e.g., the minimum thickness of the first portion 426a), which may improve the mechanical properties of the display device 50 (e.g., avoiding or reducing cracks formed in the display device 50 during the step of bending the display device 50 to form a curved display device).

[0151] It should be noted that the curved display device formed by the display device of the above embodiment may include the same or similar technical features as the display device of the above embodiment (for example, the technical features of the insulating layer described in the two paragraphs before this paragraph). These curved display devices should be included in the scope of the present disclosure.

[0152] [Fourth embodiment]

[0153] The fourth embodiment of the present disclosure also provides some display devices, which can avoid or reduce the formation of cracks in the step of using these display devices to form a curved display device.

[0154] like Fig. 6A , which illustrates a side view of a display device 60 according to a fourth embodiment of the present disclosure. For simplicity, only the substrate 200 and the light emitting elements (eg, light emitting diodes) 206a and 206b are illustrated. Fig. 6A However, those skilled in the art will appreciate that the additional layers and / or elements described in the foregoing embodiments may also be disposed in the display device 60. For example, some insulating layers may be formed between the substrate 200 and the light emitting elements (206a and 206b) of the display device 60, and one or more conductive electrodes may be formed on the light emitting elements 206a and 206b.

[0155] For example, the display device 60 can be bent to form a curved display device (eg: Figure 1B The curved display device 10' shown in FIG. Fig. 6A As shown, the display device 60 may include a portion 60a and a portion 60b. For example, the portion 60a may correspond to a curved portion of a curved display device formed by the display device 60 (e.g., Figure 1B The portion 60b may correspond to the curved portion 100′ of the curved display device 10′ shown in FIG. 6 , and the portion 60b may correspond to the non-curved portion of the curved display device formed by the display device 60 .

[0156] In some embodiments, the size of one of the plurality of light emitting elements 206a in the portion 60a may be smaller than the size of one of the plurality of light emitting elements 206b in the portion 60b, and the formation of cracks may be avoided or reduced in the step of using the display device 60 to form a curved display device. For example, the bottom surface area of ​​one of the plurality of light emitting elements 206a may be smaller than the bottom surface area of ​​one of the plurality of light emitting elements 206b. In some embodiments, the ratio of the bottom surface area of ​​one of the plurality of light emitting elements 206a to the bottom surface area of ​​one of the plurality of light emitting elements 206b may be 0.3 to 0.95.

[0157] In some embodiments, Fig. 6A As shown, the density of the light-emitting elements 206a in portion 60a (e.g., the number of light-emitting elements per unit area) may be smaller than the density of the light-emitting elements 206b in portion 60b, thereby avoiding or reducing the formation of cracks in the step of using the display device 60 to form a curved display device.

[0158] like Figure 6B , which depicts a side view of a display device 70 according to another embodiment of the present disclosure. Similar to the display device 60, the display device 70 also includes a portion 70a (which corresponds to the curved portion of the curved display device formed by the display device 70 (e.g.: Figure 1A 1 ) and a portion 70 b (which corresponds to a non-curved portion of the curved display device formed by the display device 70 ) of the curved display device 10 shown in FIG.

[0159] In some embodiments, the size of one of the plurality of light emitting elements 206a in the portion 70a may be smaller than the size of one of the plurality of light emitting elements 206b in the portion 70b, and the formation of cracks may be avoided or reduced in the step of using the display device 70 to form a curved display device. For example, the bottom surface area of ​​one of the plurality of light emitting elements 206a may be smaller than the bottom surface area of ​​one of the plurality of light emitting elements 206b. In some embodiments, the ratio of the bottom surface area of ​​one of the plurality of light emitting elements 206a to the bottom surface area of ​​one of the plurality of light emitting elements 206b may be 0.3 to 0.95.

[0160] In some embodiments, Figure 6B As shown, the density of the light-emitting elements 206a in portion 70a (e.g., the number of light-emitting elements per unit area) may be smaller than the density of the light-emitting elements 206b in portion 70b, thereby avoiding or reducing the formation of cracks in the step of using the display device 70 to form a curved display device.

[0161] It should be noted that the curved display device formed by the display device of the above-mentioned embodiment may include the same or similar technical features as the display device of the above-mentioned embodiment (for example, the technical features of the light-emitting elements described in paragraphs 5-4 and the two paragraphs before this paragraph). These curved display devices should be included in the scope of the present disclosure.

[0162] [Fifth embodiment]

[0163] The fifth embodiment of the present disclosure also provides some display devices, which can avoid or reduce the formation of cracks in the step of using these display devices to form a curved display device.

[0164] like Fig. 7A As shown, it depicts a top view of a display device 80 according to the fifth embodiment of the present disclosure. Fig. 7A Only the substrate 800 and the conductive electrode (or wire) 802 are shown, but a person skilled in the art should understand that the additional layers and / or elements described in the above embodiments may also be disposed in the display device 80. For example, some light-emitting elements or insulating layers may also be formed in the display device 80.

[0165] For example, the display device 80 can be bent to form a curved display device (eg: Figure 1A and 1B The curved display device 10 or 10' shown in FIG. Fig. 7A As shown, the display device 80 may include portions 80a and 80b. For example, portion 80a may correspond to a curved portion of a curved display device formed by the display device 80 (e.g., the curved portion 100' of the curved display device 10' shown in FIG. 1B), and portion 80b may correspond to a non-curved portion of the curved display device formed by the display device 80.

[0166] like Fig. 7A As shown, the conductive electrode (or wire) 802 may include a neck portion 802a disposed in the portion 80a of the display device 80 and a portion 802b disposed in the portion 80b of the display device 80. For example, the portion 802a is narrower than other portions of the conductive electrode (or wire) 802. In some embodiments, the width W2 of the portion 802a of the conductive electrode (or wire) 802 is smaller than the width W-1 of the portion 802b of the conductive electrode (or wire) 802, and the formation of cracks can be avoided or reduced in the step of using the display device 80 to form a curved display device.

[0167] In some embodiments, Figure 7BAs shown, the conductive electrode (or conductive line) 802 may include one or more openings 804. The density of the openings 804 in the portion 802a of the conductive electrode (or conductive line) 802 (e.g., the number of openings per unit area) may be different from the density of the openings 804 in the portion 802b of the conductive electrode (or conductive line) 802. For example, the density of the openings 804 in the portion 802a of the conductive electrode (or conductive line) 802 may be greater than the density of the openings 804 in the portion 802b of the conductive electrode (or conductive line) 802, and the formation of cracks may be avoided or reduced in the step of using the display device 80 to form a curved display device.

[0168] In some embodiments, Figure 7C As shown, the area of ​​one of the openings 804 in the portion 802a of the conductive electrode (or conductive wire) 802 may be different from the area of ​​one of the openings 804 in the portion 802b of the conductive electrode (or conductive wire) 802. For example, the area of ​​one of the openings 804 in the portion 802a of the conductive electrode (or conductive wire) 802 may be larger than the area of ​​one of the openings 804 in the portion 802b of the conductive electrode (or conductive wire) 802, and the formation of cracks can be avoided or reduced in the step of using the display device 80 to form a curved display device.

[0169] It should be noted that the curved display device formed by the display device of the above embodiment may include the same or similar technical features as the display device of the above embodiment (for example, the technical features of the conductive electrodes described in the two paragraphs before this paragraph). These curved display devices should be included in the scope of the present disclosure.

[0170] It should be understood that a deposition process, a photolithography process, an etching process, other appropriate processes or a combination thereof may be used to form the display device of the above embodiment.

[0171] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A display device, comprising: a substrate; A plurality of light emitting elements are disposed on the substrate; a touch electrode disposed on the substrate and having a first opening and a second opening, wherein an area of ​​the first opening is different from an area of ​​the second opening; A first conductive line is disposed on the substrate and includes a first arc-shaped edge; as well as a conductive electrode disposed on the substrate and comprising a second arc-shaped edge, wherein the conductive electrode at least partially overlaps the touch electrode, The first wire is electrically connected to at least one of the plurality of light-emitting elements, and in a top view, the first arc edge is disposed between two adjacent ones of the plurality of light-emitting elements, and the second arc edge is disposed between another two adjacent ones of the plurality of light-emitting elements. The display device includes a curved portion and a non-curved portion, and the size of one of the plurality of light-emitting elements disposed in the curved portion is smaller than the size of one of the plurality of light-emitting elements disposed in the non-curved portion.

2. The display device as described in claim 1 further includes a second conductive line, wherein the second conductive line is in a non-display area of ​​the display device, the first conductive line is in a display area of ​​the display device, the second conductive line and the first conductive line extend in different directions, and the first conductive line is connected to the second conductive line and is in the same layer.

3. The display device as described in claim 1, wherein the substrate has a first edge and a second edge relative to the first edge, the first edge and the second edge are separated from each other by a first distance, wherein the first conductive line has an extension length, and wherein the extension length is greater than or equal to half of the first distance and less than or equal to the first distance. 4 . The display device as claimed in claim 1 , further comprising an insulating layer, the insulating layer having a groove, and the first conductive line is disposed in the groove.

5. The display device according to claim 1, wherein: The touch electrode and the light emitting element do not overlap.

6. The display device according to claim 1, wherein: The display device is a bendable display device.

Images