Display device including light emitting diodes

Abstract

A display device including a light emitting diode is disclosed. The display device comprises a display panel which is provided with a display area and a non-display area located on the periphery of the display area; a plurality of gate lines and a plurality of data lines in the display area, the plurality of gate lines and the plurality of data lines crossing each other to define first, second, and third sub-pixels; a driving transistor in each of the first, second, and third sub-pixels and connected to the plurality of gate lines and the plurality of data lines; and a first light emitting diode, a second light emitting diode, and a third light emitting diode in the first, second, and third sub-pixels, respectively, and connected to the driving transistor, one corner of the first light emitting diode, one corner of the second light emitting diode, and one corner of the third light emitting diode have different asymmetric angular shapes from each other.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0128480, filed on September 23, 2024, which is incorporated herein by reference in its entirety. Technical Field

[0003] The present invention relates to a display device, and more specifically, to a display device comprising a light-emitting diode having an asymmetric angled shape. Background Technology

[0004] Recently, various flat panel display devices, such as liquid crystal display (LCD), organic light-emitting diode (OLED) display devices, and field-emitting diode (FED) display devices, which have excellent characteristics such as thin shape, light weight and low power consumption, have been developed and applied in various fields.

[0005] Although OLED displays have the advantage of not requiring an additional light source among various flat panel display devices, they also have the following disadvantages: due to the nature of organic materials that are susceptible to moisture and oxygen, they can deteriorate through the external environment.

[0006] To overcome this drawback, display devices using light-emitting diode chips (or light-emitting diodes) made of inorganic materials have been proposed.

[0007] After forming the light-emitting diode (LED) chips on the growth substrate, the LED chips are attached to the display panel. To distinguish the red, green, and blue LED chips from each other, the red, green, and blue LED chips are formed into ellipses with different major and minor axes.

[0008] As resolution increases, the size of the LED chip decreases. As a result, the exclusivity of the major and minor axes of the LED chip weakens, and the LED may break. Summary of the Invention

[0009] Therefore, the present invention aims to provide a display device that substantially overcomes one or more problems caused by the limitations and disadvantages of related technologies.

[0010] More specifically, the present invention aims to provide a display device including light-emitting diodes, wherein color mixing is prevented and the manufacturing process is optimized by forming the light-emitting diodes into asymmetrical corners.

[0011] Furthermore, the present invention aims to provide a display device and a method for manufacturing the display device, wherein the display device includes light-emitting diodes applicable to high resolution by forming red, green and blue light-emitting diodes into different asymmetric angles.

[0012] Additional features and advantages of the invention will be set forth in the description which follows, will be apparent in part from the description, or may be learned by practice of the invention. These and other advantages of the invention will be realized and obtained by means of the structures specifically pointed out in the written description, its claims, and the accompanying drawings.

[0013] To achieve these and other advantages, according to the intent of the present invention, as embodied and broadly described herein, a display device includes: a display panel having a display area and a non-display area located at the periphery of the display area; a plurality of gate lines and a plurality of data lines in the display area, the plurality of gate lines and the plurality of data lines intersecting each other to define a first sub-pixel, a second sub-pixel, and a third sub-pixel; a driving transistor located in each of the first sub-pixel, the second sub-pixel, and the third sub-pixel and connected to the plurality of gate lines and the plurality of data lines; and a first light-emitting diode, a second light-emitting diode, and a third light-emitting diode located in the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively and connected to the driving transistor, wherein a corner of the first light-emitting diode, a corner of the second light-emitting diode, and a corner of the third light-emitting diode have different asymmetrical corner shapes from each other.

[0014] It will be understood that the foregoing general description and the following detailed description are explanatory and are intended to provide further explanation of the claimed invention. Attached Figure Description

[0015] The accompanying drawings, which provide a further understanding of the invention and are incorporated in and form a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0016] In the attached diagram:

[0017] Figure 1 This is a view showing a display device according to a first embodiment of the present invention;

[0018] Figure 2 This is a circuit diagram showing a sub-pixel of a display device according to a first embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view showing the sub-pixels of the display panel of the display device according to the first embodiment of the present invention;

[0020] Figure 4 This is a view showing the assembly substrate of the light-emitting diodes of the display device according to the first embodiment of the present invention;

[0021] Figure 5 yes Figure 4 A magnified view of part A;

[0022] Figure 6A This is a view showing a first light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention;

[0023] Figure 6B This is a view showing a second light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention;

[0024] Figure 6C This is a view showing a third light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention;

[0025] Figure 7A This is a view showing a second light-emitting diode and a second assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention;

[0026] Figure 7B This is a view showing a first light-emitting diode and a second assembly trench for manufacturing a display device according to a first embodiment of the present invention;

[0027] Figure 7C This is a view showing a second assembly trench for manufacturing a third light-emitting diode and an assembly substrate for a display device according to a first embodiment of the present invention;

[0028] Figure 8A This is a view showing a third assembly trench for manufacturing a third light-emitting diode and an assembly substrate for a display device according to a first embodiment of the present invention;

[0029] Figure 8B This is a view showing a third assembly trench for manufacturing a first light-emitting diode and an assembly substrate for a display device according to a first embodiment of the present invention;

[0030] Figure 8C This is a view showing a third assembly trench for manufacturing a second light-emitting diode and an assembly substrate for a display device according to a first embodiment of the present invention;

[0031] Figure 9 This is a view showing a first light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a second embodiment of the present invention;

[0032] Figure 10 This is a view showing a first light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a third embodiment of the present invention;

[0033] Figure 11 This is a view showing the second and third light-emitting diodes for manufacturing a display device according to a fourth embodiment of the present invention, and the second and third assembly trenches of the assembly substrate;

[0034] Figure 12 This is a view showing the second and third light-emitting diodes for manufacturing a display device according to a fifth embodiment of the present invention, and the second and third assembly trenches of the assembly substrate;

[0035] Figure 13 This is a view showing the second and third light-emitting diodes for manufacturing a display device according to the sixth embodiment of the present invention, and the second and third assembly trenches of the assembly substrate. Detailed Implementation

[0036] The advantages and features of the present invention, as well as its implementation methods, will become apparent from the exemplary aspects described below with reference to the accompanying drawings. However, the invention can be implemented in various forms and should not be construed as limited to the exemplary aspects set forth herein. Rather, these exemplary aspects are provided so that the disclosure of the invention will be thorough and complete, assisting those skilled in the art in fully understanding the scope of the invention. Furthermore, the invention is defined only by the scope of the claims.

[0037] The shapes, dimensions, proportions, angles, quantities, etc., shown in the accompanying drawings to illustrate various exemplary aspects of the invention are given by way of example only. Therefore, the invention is not limited to what is shown in the figures. Similar reference numerals refer to similar elements throughout the specification unless otherwise specified.

[0038] In the following description, if a detailed description of a relevant known function or construction may unnecessarily obscure a feature or aspect of the invention, a detailed description of such a known function or construction may be omitted or a brief description may be provided.

[0039] When using terms such as “including,” “having,” or “containing,” one or more additional elements may be added, unless a term such as “only” is used. Elements described in the singular are intended to include multiple elements, or vice versa, unless the context clearly indicates otherwise.

[0040] When interpreting an element, even if no explicit description of the error or tolerance range is provided, the element is interpreted as including such an error or tolerance range.

[0041] When describing positional relationships, such as using terms like "on top of," "above," "below," "upper part of," "lower part of," "next to," or "adjacent," one or more other parts may be placed between these two parts, unless more restrictive terms such as "immediately adjacent," "directly," or "closely" are used. For example, when one element or layer is placed "on" another element or layer, a third layer or element may be inserted in between.

[0042] Although the terms first, second, A, B, (a), (b), etc., may be used herein to refer to the elements, these elements should not be construed as being limited by these terms, as they are not intended to define a particular order or priority. These terms are merely used to distinguish one element from another. For example, without departing from the scope of the invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0043] The term "at least one" should be understood to include all combinations of one or more related elements. For example, the term "at least one of the first, second, and third elements" can include all combinations of two or more of the first, second, and third elements, as well as the first element, the second element, or the third element.

[0044] The term "display device" can include display devices in the narrow sense, such as liquid crystal modules (LCMs), organic light-emitting diode (OLED) modules, and quantum dot (QD) modules that include a display panel and driving units for driving the display panel. Furthermore, the term "display device" can include finished products (or final products) that include LCMs, OLED modules, and QD modules, such as laptops, televisions, computer monitors, display devices including automotive display equipment or other forms of equipment besides vehicles, and set electronic apparatus or set equipment (or set equipment) such as smartphones or electronic boards.

[0045] Therefore, in addition to display devices in the narrow sense such as LCM, OLED modules and QD modules, the display device of the present invention may also include unit devices or application products that include LCM, OLED modules and QD modules in end-user devices.

[0046] Depending on the context, an LCM, OLED module, and QD module having a display panel and driving unit can be referred to as a "display device," and an electronic device comprising an LCM, OLED module, and QD module can be referred to as a "unit device." For example, a display device in the narrow sense may include a liquid crystal, organic light-emitting diode, and quantum dot display panel and a source printed circuit board (PCB) for a control unit for driving the display panel, and a unit device may further include a unit PCB electrically connected to a unit control unit for controlling the source PCB of the entire unit device.

[0047] The display panel of the present invention may include all types of display panels, such as liquid crystal display panels, organic light-emitting diode display panels, quantum dot display panels, and electroluminescent display panels. The display panel of the present invention is not limited to a specific display panel having a flexible substrate for an organic light-emitting diode display panel and a curved frame for a lower backplate support. The shape or size of the display panel used in the display device of the present invention is not limited thereto.

[0048] For example, when the display panel is an organic light-emitting diode (OLED) display panel, the display panel may include multiple gate lines, multiple data lines, and sub-pixels in the intersection areas of the multiple gate lines and multiple data lines. The display panel may include: an array having thin-film transistors having elements for selectively applying voltage to each sub-pixel; a light-emitting element layer on the array; and an encapsulation substrate or encapsulation portion covering the light-emitting element layer. The encapsulation portion can protect the thin-film transistors and the light-emitting element layer from external impacts and can prevent or at least reduce the penetration of moisture or oxygen into the light-emitting element layer. Furthermore, the light-emitting element layer on the array may include an inorganic light-emitting layer, such as a nanoscale material layer or quantum dots.

[0049] The thin-film transistor of the present invention may include one of oxide thin-film transistors, amorphous silicon thin-film transistors, and low-temperature polycrystalline silicon thin-film transistors.

[0050] The features of the various embodiments of the present invention may be combined or integrated with each other, either partially or entirely. These features may be connected and operated in various technical ways, as will be fully understood by those skilled in the art. These aspects may be implemented independently of each other, or in various combinations in relation to each other.

[0051] Hereinafter, a display device according to various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein the influence on the oxide semiconductor layer of the thin-film transistor of the driving element portion is reduced by shielding light emitted and transmitted from the sub-pixel and / or light input from the outside.

[0052] Figure 1This is a view illustrating a display device according to a first embodiment of the present invention. The display device may be an organic light-emitting diode (OLED) display device, but is not limited thereto. For example, the display device may be a micro light-emitting diode (LED) display device or a mini light-emitting diode (LED) display device.

[0053] exist Figure 1 According to the first embodiment of the present invention, the display device 110 includes a timing control unit 120 (e.g., a circuit), a data driving unit 122 (e.g., a circuit), a first gate driving unit 124 (e.g., a circuit), a second gate driving unit 126 (e.g., a circuit), and a display panel 128.

[0054] The timing control unit 120 uses image signals transmitted from an external system such as a graphics card or television system, as well as multiple timing signals including a data enable signal, a horizontal synchronization signal, a vertical synchronization signal, and a clock signal, to generate image data RGB, a data control signal DCS, and a gate control signal GCS. The timing control unit 120 transmits the image data RGB and the data control signal DCS to the data driving unit 122, and transmits the gate control signal GCS to the first gate driving unit 124 and the second gate driving unit 126.

[0055] Data drive unit 122 uses the image data RGB and data control signal DCS transmitted from timing control unit 120 to generate a data signal (data voltage) Vda (see...). Figure 2 It transmits the data signal Vda to the data line DL of the display panel 128.

[0056] The first gate driving unit 124 and the second gate driving unit 126 generate gate signals (gate voltages) Vsc and Vse (see...) using the gate control signal GCS transmitted from the timing control unit 120. Figure 2 The gate signals Vsc and Vse are applied to the gate line GL of the display panel 128.

[0057] The first gate driving unit 124 and the second gate driving unit 126 may have an in-panel gate (GIP) type formed in the non-display area NDA of the substrate of the display panel 128 having gate lines GL, data lines DL and pixels P.

[0058] Although the first gate driving unit 124 and the second gate driving unit 126 are in Figure 1 In the first embodiment, the gate driving unit is disposed on both sides of the display panel 128, but in another embodiment, a gate driving unit may be disposed on one side of the display panel 128.

[0059] The display panel 128 may include a display area DA at its central portion and a non-display area NDA surrounding or located on the periphery of the display area DA. The display panel 128 displays images using gate signals Vsc and Vse and a data signal Vda. To display images, the display panel 128 includes a plurality of pixels P, a plurality of gate lines GL, and a plurality of data lines DL in the display area DA.

[0060] Each of the plurality of pixels P includes a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3, wherein a gate line GL and a data line DL intersect each other to define the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3. Each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 is connected to the gate line GL and the data line DL. For example, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may correspond to a first color, a second color, and a third color, respectively, which may be red, green, and blue, respectively.

[0061] Each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may include: such as a switching transistor Tsw (see...). Figure 2 ), drive transistor Tdr (see Figure 2 ) and sensing transistor Tse (see Figure 2 Multiple transistors such as ); storage capacitor Cst (see Figure 2 ); and light-emitting diodes (Del) (see Figure 2 ).

[0062] Figure 2 This is a circuit diagram showing a sub-pixel of a display device according to a first embodiment of the present invention.

[0063] exist Figure 2 In the first embodiment of the present invention, each of the first sub-pixel SP1, the second sub-pixel SP2 and the third sub-pixel SP3 of the display panel 128 of the display device 110 includes: a switching transistor Tsw, a driving transistor Tdr, a sensing transistor Tse, a storage capacitor Cst and a light-emitting diode Del.

[0064] Despite Figure 2In the first embodiment, each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 has a 3T1C structure including three transistors and a storage capacitor. However, in another embodiment, each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may have one of a 6T1C structure including six transistors and a storage capacitor, a 7T1C structure including seven transistors and a storage capacitor, or an 8T1C structure including eight transistors and a storage capacitor.

[0065] Despite Figure 2 In the first embodiment, the switching transistor Tsw, the driving transistor Tdr, and the sensing transistor Tse may be negative, but in another embodiment, at least one of the switching transistor Tsw, the driving transistor Tdr, and the sensing transistor Tse may be positive.

[0066] The switching transistor Tsw switches according to the scan signal Vsc to transmit the data signal Vda to the first node N1.

[0067] The gate of the switching transistor Tsw is connected to the gate line GL to receive the scan signal Vsc, the drain of the switching transistor Tsw is connected to the data line DL to receive the data signal Vda, and the source of the switching transistor Tsw is connected to the first node N1.

[0068] The driving transistor Tdr switches according to the voltage of the first node N1 to send a high-level signal (high-level voltage) Vdd to the second node N2.

[0069] The gate of the driving transistor Tdr is connected to the first node N1, the drain of the driving transistor Tdr is connected to the high-level power supply line to receive the high-level signal Vdd, and the source of the driving transistor Tdr is connected to the second node N2.

[0070] The sensing transistor Tse switches according to the sensing signal (sensing voltage) Vse to transmit the reference signal (reference voltage) Vre to the second node N2 or to transmit the voltage of the second node N2 to the reference line.

[0071] The gate of the sensing transistor Tse is connected to the gate line GL to receive the sensing signal Vse, the drain of the sensing transistor Tse is connected to the reference line to receive the reference signal Vre or to transmit the voltage of the second node N2 to the reference line, and the source of the sensing transistor Tse is connected to the second node N2.

[0072] The storage capacitor Cst holds the data signal Vda provided to the first node N1 for one frame and stores the threshold voltage Vth of the driving transistor Tdr.

[0073] The first capacitor electrode of the storage capacitor Cst is connected to the first node N1, and the second capacitor electrode of the storage capacitor Cst is connected to the second node N2.

[0074] The light-emitting diode Del emits light with a brightness proportional to the current driving the transistor Tdr.

[0075] The anode of LED Del is connected to the second node N2, and the cathode of LED Del is connected to the low-level power supply line to receive the low-level signal (low-level voltage) Vss.

[0076] The source of the switching transistor Tsw, the gate of the driving transistor Tdr, and the first capacitor electrode of the storage capacitor Cst constitute the first node N1, and the source of the driving transistor Tdr, the source of the sensing transistor Tse, the second capacitor electrode of the storage capacitor, and the anode of the light-emitting diode Del constitute the second node N2.

[0077] The light-emitting diode Del can display an image with brightness corresponding to the RGB of the image data, driven by the sub-pixel circuits of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3.

[0078] The cross-sectional structure of each sub-pixel SP1, SP2 and SP3 of the display panel 128 of the display device 110 will be described with reference to the accompanying drawings.

[0079] Figure 3 This is a cross-sectional view showing the sub-pixels of the display panel of the display device according to the first embodiment of the present invention.

[0080] exist Figure 3 In the process, a light-shielding pattern 132 is disposed on the substrate 130 in each of the first sub-pixel SP1, the second sub-pixel SP2 and the third sub-pixel SP3, and a first buffer layer 134 is disposed on the light-shielding pattern 132 over the entire substrate 130.

[0081] The light-shielding pattern 132 can block light incident from the lower part of the substrate 130. For example, the light-shielding pattern 132 may have a single layer or multiple layers of a metallic material such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu) and their alloys.

[0082] The first buffer layer 134 can block moisture or oxygen from seeping in from the outside. For example, the first buffer layer 134 may have materials such as silicon oxide (SiO2) and silicon nitride (SiN). x Single or multiple layers of inorganic insulating materials such as )

[0083] Semiconductor layer 136 is disposed on first buffer layer 134 corresponding to light shielding pattern 132, and gate insulating layer 138 is disposed on semiconductor layer 136 over the entire substrate 130.

[0084] Semiconductor layer 136 includes an undoped channel region at its center and source and drain regions doped on both sides of the channel region. For example, semiconductor layer 136 may encapsulate a polycrystalline semiconductor material such as polycrystalline silicon, or an oxide semiconductor material such as indium gallium zinc oxide (IGZO), zinc oxide (ZnO), tin oxide (SnO2), copper oxide (Cu2O), nickel oxide (NiO), indium tin zinc oxide (ITZO), and indium aluminum zinc oxide (IAZO).

[0085] For example, the gate insulating layer 138 may have materials such as silicon oxide (SiO2) and silicon nitride (SiN). x Single or multiple layers of inorganic insulating materials such as )

[0086] The gate 140 and the channel region of the semiconductor layer 136 are respectively disposed on the gate insulating layer 138. The first capacitor electrode 142, which is separated from the gate 140, is disposed on the gate insulating layer 138. The first interlayer insulating layer 144 is disposed on the gate 140 and the first capacitor electrode 142.

[0087] The gate 140 and the first capacitor electrode 142 may have the same layers and the same materials. For example, the gate 140 and the first capacitor electrode 142 may have a single layer or multiple layers of a metallic material such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys.

[0088] For example, the first interlayer insulating layer 144 may have materials such as silicon oxide (SiO2) and silicon nitride (SiN). x Single or multiple layers of inorganic insulating materials such as )

[0089] The second capacitor electrode 146 is disposed on the first interlayer insulating layer 144 corresponding to the first capacitor electrode 142, and the second interlayer insulating layer 148 is disposed on the second capacitor electrode 146 over the entire substrate 130.

[0090] For example, the second capacitor electrode 146 may have a single layer or multiple layers of a metallic material such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys.

[0091] For example, the second interlayer insulating layer 148 may have materials such as silicon oxide (SiO2) and silicon nitride (SiN). xSingle or multiple layers of inorganic insulating materials such as )

[0092] The first capacitor electrode 142, the first interlayer insulating layer 144, and the second capacitor electrode 146 can constitute a storage capacitor Cst.

[0093] The source electrode 150 and the drain electrode 152, which are separated from each other, are disposed on the second interlayer insulating layer 148, and the first planarization layer 154 is disposed on the source electrode 150 and the drain electrode 152 over the entire substrate 130.

[0094] The source 150 and drain 152 are connected to the source region and drain region of the semiconductor layer 136 through contact holes in the second interlayer insulating layer 148, the first interlayer insulating layer 144 and the gate insulating layer 138, respectively. The drain 152 is connected to the light shielding pattern 132 through contact holes in the second interlayer insulating layer 148, the first interlayer insulating layer 144 and the gate insulating layer 138 and the first buffer layer 134.

[0095] The source electrode 150 and the drain electrode 152 may have the same layers and the same materials as each other. For example, the source electrode 150 and the drain electrode 152 may have a single layer or multiple layers of a metallic material such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu) and their alloys.

[0096] For example, the first planarization layer 154 may have one or more layers of organic insulating materials such as photoacryl and benzocyclobutene (BCB).

[0097] Semiconductor layer 136, gate 140, source 150 and drain 152 can form a driving transistor Tdr.

[0098] The connecting electrode 156 is disposed on the first planarization layer 154 corresponding to the source electrode 150. The power line 158, which is separated from the connecting electrode 156, is disposed on the first planarization layer 154. The adhesive layer 160 is disposed on the connecting electrode 156 and the power line 158 over the entire substrate 130.

[0099] The connecting electrode 156 is connected to the source electrode 150 through a contact hole in the first planarization layer 154. The connecting electrode 156 and the power line 158 may have the same layers and the same materials.

[0100] For example, the connecting electrode 156 and the power line 158 may have a single layer or multiple layers of a metallic material such as molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu) and their alloys.

[0101] For example, power line 158 can provide a low-level signal Vss.

[0102] The first semiconductor layer 162 and the connecting electrode 156 are respectively disposed on the adhesive layer 160. The active layer 164, the second semiconductor layer 166 and the first electrode 168 are sequentially disposed on the first side or the first part of the first semiconductor layer 162, and the second electrode 170 is disposed on the second side or the second part of the first semiconductor layer 162.

[0103] The first semiconductor layer 162 provides electrons to the active layer 164, and the second semiconductor layer 166 provides holes to the active layer 164. The active layer 164 uses electrons and holes to generate light.

[0104] For example, the first semiconductor layer 162 may include negative gallium nitride (n-GaN), the second semiconductor layer 166 may include positive gallium nitride (p-GaN), and the active layer 164 may include multiple quantum wells (MQW).

[0105] For example, the first electrode 168 can be the anode, and the second electrode 170 can be the cathode.

[0106] The first semiconductor layer 162, the active layer 164, the second semiconductor layer 166, the first electrode 168, and the second electrode 170 can constitute a light-emitting diode (or a light-emitting diode chip).

[0107] The second planarization layer 172 is disposed on the first electrode 168 and the second electrode 170 above the entire substrate 130, and the first connecting line 174 and the second connecting line 176, which are separated from each other, are disposed on the second planarization layer 172 corresponding to the light-emitting diode Del.

[0108] For example, the second planarization layer 172 may have a single layer or multiple layers of organic insulating materials such as optical acrylic and benzocyclobutene (BCB).

[0109] The first connecting line 174 is connected to the connecting electrode 156 through the contact holes in the adhesive layer 160 and the second planarization layer 172, and is also connected to the first electrode 168 through the contact holes in the second planarization layer 172.

[0110] The second connecting line 176 is connected to the power line 158 through the contact holes in the adhesive layer 160 and the second planarization layer 172, and is also connected to the second electrode 170 through the contact holes in the second planarization layer 172.

[0111] For example, the first connecting line 174 and the second connecting line 176 may comprise transparent conductive materials such as indium tin oxide (ITO) and indium zinc oxide (IZO).

[0112] The encapsulation layer 178 is disposed on the first connection line 174 and the second connection line 176 above the entire substrate 130.

[0113] Encapsulation layer 178 prevents the penetration of particles such as oxygen or moisture.

[0114] For example, the encapsulation layer 178 may have materials such as silicon oxide (SiO2) and silicon nitride (SiN). x Single or multiple layers of inorganic insulating materials such as )

[0115] Although in the first embodiment the light-emitting diode Del is exemplary to be horizontal, in another embodiment the light-emitting diode Del may be vertical.

[0116] The light-emitting diode Del of the display device 110 can be attached to the substrate 130 by self-assembly technology.

[0117] Figure 4 This is a view showing the assembly substrate of the light-emitting diodes of the display device according to the first embodiment of the present invention; Figure 5 yes Figure 4 A magnified view of part A.

[0118] exist Figure 4 In the chamber 232, an assembly substrate 210 having multiple assembly grooves 212 is disposed above the chamber 232, a magnetic rod 230 generating a magnetic field is disposed above the assembly substrate 210, and a fluid 234 including multiple light-emitting diodes (LEDs) is disposed in the chamber 232.

[0119] The magnetic rod 230 can move and rotate in the up, down, left and right directions, and multiple LED Dels can be formed on the growth substrate and then detached from the growth substrate.

[0120] For example, fluid 234 may include water such as deionized water.

[0121] Multiple LED Dels move toward the assembly substrate 210 in a fluid 234 via the magnetic field of the magnetic rod 230. The LED Dels may have a magnetic layer.

[0122] For example, the magnetic layer may include a metal such as nickel (Ni) that is magnetic, and may be disposed in one of the first electrode 168 and the second electrode 170 of the LED Del.

[0123] exist Figure 5 In the assembly substrate 210, a first assembly electrode 220 and a second assembly electrode 222, which are separated from each other, are disposed on the lower surface of the assembly substrate 210, and an insulating layer 224 is disposed on the first assembly electrode 220 and the second assembly electrode 222 over the entire assembly substrate 210.

[0124] For example, the first assembly electrode 220 and the second assembly electrode 222 may include transparent conductive materials or metallic materials, and the insulating layer 224 may have a single layer or multiple layers of inorganic insulating materials or organic insulating materials.

[0125] Sidewalls 226 are disposed on insulating layer 224 corresponding to the first assembly electrode 220 and the second assembly electrode 222. Sidewalls 226 partially overlap with the first assembly electrode 220 and the second assembly electrode 222, and the space between the sidewalls 226 forms an assembly groove 212.

[0126] When an alternating current (AC) voltage is applied to the first assembly electrode 220 and the second assembly electrode 222, an electric field is generated between the first assembly electrode 220 and the second assembly electrode 222, and the LED Dels adjacent to the multiple assembly trenches 212 in the multiple LED Dels in the fluid 234 can be assembled into the assembly trenches 212 by the dielectric phoretic force brought about by the electric field generated between the first assembly electrode 220 and the second assembly electrode 222.

[0127] Multiple LED Dels include a first LED Del1 that emits a first color light, a second color light, and a third color light, respectively (see...). Figure 6A ), second LED Del2 (see Figure 7A ) and the third LED Del3 (see Figure 8A The plurality of assembly trenches 212 include first assembly trenches 212a corresponding to the first LED Del1, the second LED Del2, and the third LED Del3, respectively (see...). Figure 6A ), second assembly groove 212b (see Figure 7A ) and the third assembly trench 212c (see Figure 8A ).

[0128] For example, the first color light, the second color light, and the third color light can correspond to red, green, and blue, respectively.

[0129] When the first LED Del1, the second LED Del2, and the third LED Del3 are correctly assembled into the first assembly trench 212a, the second assembly trench 212b, and the third assembly trench 212c, respectively, the electric current applied to the first LED Del1, the second LED Del2, and the third LED Del3 due to the electric field of the first assembly electrode 220 and the second assembly electrode 222 becomes greater than the magnetic force applied to the first LED Del1, the second LED Del2, and the third LED Del3 due to the magnetic field of the magnetic rod 230. Therefore, the first LED Del1, the second LED Del2, and the third LED Del3 cannot escape from the first assembly trench 212a, the second assembly trench 212b, and the third assembly trench 212c, respectively, but can be stably fixed to the first assembly trench 212a, the second assembly trench 212b, and the third assembly trench 212c, respectively.

[0130] When the first LED Del1, the second LED Del2, and the third LED Del3 are not correctly assembled into the first assembly trench 212a, the second assembly trench 212b, and the third assembly trench 212c, respectively, the magnetic force applied to the first LED Del1, the second LED Del2, and the third LED Del3 due to the magnetic field of the magnetic rod 230 becomes greater than the electric force applied to the first LED Del1, the second LED Del2, and the third LED Del3 due to the electric field of the first assembly electrode 220 and the second assembly electrode 222. As a result, the first LED Del1, the second LED Del2, and the third LED Del3 can escape from the first assembly trench 212a, the second assembly trench 212b, and the third assembly trench 212c, respectively. The first LED Del1, the second LED Del2, and the third LED Del3 that escape from the first assembly trench 212a, the second assembly trench 212b, and the third assembly trench 212c can float in the fluid 234 until the first LED Del1, the second LED Del2, and the third LED Del3 are correctly assembled into the first assembly trench 212a, the second assembly trench 212b, and the third assembly trench 212c, respectively.

[0131] When multiple LED Dels are correctly assembled into multiple assembly trenches 212 of the assembly substrate 210, the assembly substrate 210 is disposed on the adhesive layer 160 of the substrate 130 of the display panel 128, and the multiple LED Dels in the multiple assembly trenches 212 are transferred and attached to the adhesive layer 160 of each sub-pixel SP1, SP2 and SP3.

[0132] In another embodiment, the transfer step can be omitted by using a substrate 130 with a driving transistor Tdr as the assembly substrate 210.

[0133] The shapes of the multiple assembly grooves 212 and multiple LED Dels will be described with reference to the accompanying drawings.

[0134] Figure 6A This is a view showing a first light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention; Figure 6B This is a view showing a second light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention;

[0135] Figure 6C This is a view showing a third light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention. Figure 7A This is a view showing a second light-emitting diode and a second assembly trench of an assembly substrate for manufacturing a display device according to a first embodiment of the present invention; Figure 7B This is a view showing a first light-emitting diode and a second assembly trench for manufacturing a display device according to a first embodiment of the present invention; Figure 7C This is a view showing a second assembly trench for manufacturing a third light-emitting diode and an assembly substrate for a display device according to a first embodiment of the present invention. Figure 8A This is a view showing a third assembly trench for manufacturing a third light-emitting diode and an assembly substrate for a display device according to a first embodiment of the present invention; Figure 8B This is a view showing a third assembly trench for manufacturing a first light-emitting diode and an assembly substrate for a display device according to a first embodiment of the present invention; Figure 8C This is a view showing a second light-emitting diode and a third assembly trench for manufacturing a display device according to a first embodiment of the present invention, and an assembly substrate.

[0136] exist Figure 6A In the first embodiment of the display device 110 according to the present invention, the first light-emitting diode (LED) Del1 of the first sub-pixel SP1 has a square shape, wherein one corner corresponding to the second electrode 170 has an angle of about 90 degrees (the first angle A1 between the two connected sides has a shape of about 90 degrees), and wherein the first assembly trench 212a of the assembly substrate 210 on which the first LED Del1 is assembled has a square shape corresponding to the first LED Del1.

[0137] In another embodiment, the first LED Del1 may have one of the following shapes: square, wherein one corner corresponding to the first electrode 168 has an angle of about 90 degrees; rhombus (diamond-shaped), wherein one corner corresponding to the first electrode 168 or the second electrode 170 has an angle greater than about 90 degrees; and rhombus, wherein one corner corresponding to the first electrode 168 or the second electrode 170 has an angle less than about 90 degrees.

[0138] The first LED Del1 has a square shape, with a first length L1 and a second length L2 along the horizontal and vertical directions, respectively; the first assembly groove 212a has a square shape larger than that of the first LED Del1.

[0139] For example, the first length L1 and the second length L2 may be about 14 μm and about 14 μm respectively, and the first assembly groove 212a may have a horizontal length of about 18 μm and a vertical length of about 18 μm.

[0140] The top surface of the first LED Del1 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The step difference is located between the first surface S1 and the second surface S2. The first surface S1 may be V-shaped, which becomes square when the second surface S2 is added; the second surface S2 may be square.

[0141] As a result, the first LED Del1 was stably assembled into the first assembly trench 212a.

[0142] exist Figure 7A In the first embodiment of the present invention, the second light-emitting diode (LED) Del2 of the second sub-pixel SP2 of the display device 110 has a parallelogram shape, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the second angle A2 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the second assembly trench 212b of the assembly substrate 210 on which the second LED Del2 is assembled has a parallelogram shape corresponding to the second LED Del2.

[0143] When the second angle A2 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the second angle A2 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the second LED Del2 increases.

[0144] In another embodiment, the second LED Del2 may have a parallelogram shape, wherein one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0145] The second LED Del2 has a parallelogram with a third length L3 and a fourth length L4 along the horizontal and vertical directions, respectively; the second assembly groove 212b has a parallelogram larger than the second LED Del2.

[0146] For example, the third length L3 and the fourth length L4 may be about 10 μm and about 18 μm, respectively, and the second assembly groove 212b may have a horizontal length of about 14 μm and a vertical length of about 22 μm.

[0147] The top surface of the second LED Del2 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be an equilateral trapezoid; the second surface S2 may be a triangle.

[0148] As a result, the second LED Del2 was stably assembled into the second assembly trench 212b.

[0149] exist Figure 8A In the first embodiment of the present invention, the third light-emitting diode (LED) Del3 of the third sub-pixel SP3 of the display device 110 has an equilateral trapezoidal shape, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the third angle A3 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the third assembly trench 212c of the assembly substrate 210 on which the third LED Del3 is assembled has an equilateral trapezoidal shape corresponding to the third LED Del3.

[0150] When the third angle A3 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the third angle A3 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the third LED Del3 increases.

[0151] In another embodiment, the third LED Del3 may have an equilateral trapezoid, wherein one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0152] One corner of the triangular third LED Del3 is set opposite to one corner of the triangular second LED Del2.

[0153] For example, in the second LED Del2, the upper left corner can be a triangle; in the third LED Del3, the upper right corner can be a triangle.

[0154] The third LED Del3 has an equilateral trapezoid with a fifth length L5 and a sixth length L6 along the horizontal and vertical directions, respectively; the third assembly groove 212c has an equilateral trapezoid larger than the third LED Del3.

[0155] For example, the fifth length L5 and the sixth length L6 can be about 10 μm and about 18 μm, respectively, and the third assembly groove 212c can have a horizontal length of about 14 μm and a vertical length of about 22 μm.

[0156] The top surface of the third LED Del3 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be a parallelogram; the second surface S2 may be a triangle.

[0157] As a result, the third LED Del3 was stably assembled into the third assembly trench 212c.

[0158] exist Figure 6B and 6C Even if one corner of each of the second LED Del2 and the third LED Del3 is inserted into the first assembly groove 212a to correspond to one corner of the first assembly groove 212a, at least one end of each of the second LED Del2 and the third LED Del3 will be set to extend beyond the first assembly groove 212a. As a result, each of the second LED Del2 and the third LED Del3 is not assembled into the first assembly groove 212a, but is easily able to escape from the first assembly groove 212a.

[0159] exist Figure 7B and 7C Even if one corner of each of the first LED Del1 and the third LED Del3 is inserted into the second assembly groove 212b to correspond to one corner of the second assembly groove 212b, at least one end of each of the first LED Del1 and the third LED Del3 will be set to extend beyond the second assembly groove 212b. As a result, each of the first LED Del1 and the third LED Del3 is not assembled into the second assembly groove 212b, but is easily able to escape from the second assembly groove 212b.

[0160] exist Figure 8B and 8C Even if one corner of each of the first LED Del1 and the second LED Del2 is inserted into the third assembly groove 212c to correspond to one corner of the third assembly groove 212c, at least one end of each of the first LED Del1 and the second LED Del2 will be set to extend beyond the third assembly groove 212c. As a result, each of the first LED Del1 and the second LED Del2 is not assembled into the third assembly groove 212c, but is easy to escape from the third assembly groove 212c.

[0161] In the display device 110 according to the first embodiment of the present invention, the first LED Del1, the second LED Del2, and the third LED Del3 are formed with angles having asymmetrical corners that are different from each other; the first assembly groove 212a, the second assembly groove 212b, and the third assembly groove 212c are formed with shapes corresponding to the first LED Del1, the second LED Del2, and the third LED Del3. As a result, the exclusivity among the first LED Del1, the second LED Del2, and the third LED Del3 is improved, preventing color mixing caused by incorrect assembly of the first LED Del1, the second LED Del2, and the third LED Del3, thereby obtaining a relatively high resolution.

[0162] Although in the first embodiment, the first color, second color, and third color of the first LED Del1, the second LED Del2, and the third LED Del3 correspond to red, green, and blue, respectively, in another embodiment, the first color, the second color, and the third color may correspond to green, blue, and red, respectively, or correspond to blue, red, and green, or correspond to different colors from each other.

[0163] The first LED Del1, the second LED Del2, and the third LED Del3, which have different asymmetric angles, will be described with reference to the accompanying drawings.

[0164] Figure 9 This is a view showing a first light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a second embodiment of the present invention.

[0165] exist Figure 9 In the second embodiment of the present invention, the first light-emitting diode (LED) Del1 of the first sub-pixel SP1 of the display device 110 has a teardrop shape, wherein one corner corresponding to the second electrode 170 has an angle of about 90 degrees (the first angle A1 between the two connected sides has a shape of about 90 degrees), and wherein the first assembly trench 212a of the assembly substrate 210 on which the first LED Del1 is assembled has a teardrop shape corresponding to the first LED Del1.

[0166] In another embodiment, the first LED Del1 may have a teardrop shape in which one corner corresponding to the first electrode 168 has an angle of about 90 degrees.

[0167] The first LED Del1 has a teardrop shape, with a first length L1 and a second length L2 along the horizontal square and vertical directions, respectively; the first assembly groove 212a has a teardrop shape larger than that of the first LED Del1.

[0168] For example, the first length L1 and the second length L2 may be about 13 μm and about 15 μm, respectively, and the first assembly groove 212a may have a horizontal length of about 17 μm and a vertical length of about 19 μm.

[0169] The top surface of the first LED Del1 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 can be crescent-shaped, which becomes teardrop-shaped when the second surface S2 is added; the second surface S2 can be fan-shaped.

[0170] As a result, the first LED Del1 was stably assembled into the first assembly trench 212a.

[0171] Figure 10 This is a view showing a first light-emitting diode and a first assembly trench of an assembly substrate for manufacturing a display device according to a third embodiment of the present invention.

[0172] exist Figure 10 In the display device 110 according to the third embodiment of the present invention, the first light-emitting diode (LED) Del1 of the first sub-pixel SP1 has a hexagonal shape, wherein one corner corresponding to the second electrode 170 has an angle of about 90 degrees (the first angle A1 between the two connected sides has a shape of about 90 degrees), and wherein the first assembly trench 212a of the assembly substrate 210 on which the first LED Del1 is assembled has a hexagonal shape corresponding to the first LED Del1.

[0173] In another embodiment, the first LED Del1 may have a hexagon in which one corner corresponding to the first electrode 168 has an angle of about 90 degrees.

[0174] The first LED Del1 has a hexagonal shape, with a first length L1 and a second length L2 along the horizontal square and vertical directions, respectively; the first assembly groove 212a has a hexagonal shape larger than that of the first LED Del1.

[0175] For example, the first length L1 and the second length L2 may be about 13 μm and about 15 μm, respectively, and the first assembly groove 212a may have a horizontal length of about 17 μm and a vertical length of about 19 μm.

[0176] The top surface of the first LED Del1 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3The first surface S1 can have a chamfered chevron shape, which becomes a hexagon when the second surface S2 is added; the second surface S2 can be square.

[0177] As a result, the first LED Del1 was stably assembled into the first assembly trench 212a.

[0178] Figure 11 This is a view showing second and third light-emitting diodes for manufacturing a display device according to a fourth embodiment of the present invention, and second and third assembly trenches of an assembly substrate.

[0179] exist Figure 11 In the display device 110 according to the fourth embodiment of the present invention, the second light-emitting diode (LED) Del2 of the second sub-pixel SP2 has a trapezoidal shape, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the second angle A2 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the second assembly trench 212b of the assembly substrate 210 on which the second LED Del2 is assembled has a trapezoidal shape corresponding to the second LED Del2.

[0180] When the second angle A2 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the second angle A2 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the second LED Del2 increases.

[0181] In another embodiment, the second LED Del2 may have a trapezoidal shape in which one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0182] One corner of the triangular third LED Del3 is set opposite to one corner of the triangular second LED Del2.

[0183] For example, in the second LED Del2, the upper left corner can be a triangle; in the third LED Del3, the upper right corner can be a triangle.

[0184] The second LED Del2 has a trapezoidal shape with a third length L3 and a fourth length L4 along the horizontal and vertical directions, respectively, wherein the portion opposite to one corner is flat; the second assembly groove 212b has a trapezoidal shape larger than that of the second LED Del2.

[0185] For example, the third length L3 and the fourth length L4 may be about 10 μm and about 21 μm, respectively, and the second assembly groove 212b may have a horizontal length of about 14 μm and a vertical length of about 25 μm.

[0186] The top surface of the second LED Del2 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be trapezoidal, wherein the portion opposite to one corner is flat; the second surface S2 may be triangular.

[0187] As a result, the second LED Del2 was stably assembled into the second assembly trench 212b.

[0188] According to the fourth embodiment of the present invention, the third light-emitting diode (LED) Del3 of the third sub-pixel SP3 of the display device 110 has a trapezoidal shape, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the third angle A3 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the third assembly trench 212c of the assembly substrate 210 on which the third LED Del3 is assembled has a trapezoidal shape corresponding to the third LED Del3.

[0189] When the third angle A3 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the third angle A3 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the third LED Del3 increases.

[0190] In another embodiment, the third LED Del3 may have a trapezoidal shape in which one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0191] The third LED Del3 has a trapezoidal shape with a fifth length L5 and a sixth length L6 along the horizontal and vertical directions, respectively, wherein the portion opposite to one corner is flat; the third assembly groove 212c has a trapezoidal shape larger than that of the third LED Del3.

[0192] For example, the fifth length L5 and the sixth length L6 can be about 10 μm and about 21 μm, respectively, and the third assembly groove 212c can have a horizontal length of about 14 μm and a vertical length of about 25 μm.

[0193] The top surface of the third LED Del3 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be trapezoidal, wherein the portion opposite to one corner is flat; the second surface S2 may be triangular.

[0194] As a result, the third LED Del3 was stably assembled into the third assembly trench 212c.

[0195] Figure 12 This is a view showing the second and third light-emitting diodes for manufacturing a display device according to a fifth embodiment of the present invention, and the second and third assembly trenches of the assembly substrate.

[0196] exist Figure 12 In the display device 110 according to the fifth embodiment of the present invention, the second light-emitting diode (LED) Del2 of the second sub-pixel SP2 has a trapezoidal shape including a rounded portion, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the second angle A2 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the second assembly trench 212b of the assembly substrate 210 on which the second LED Del2 is assembled has a trapezoidal shape corresponding to the second LED Del2.

[0197] When the second angle A2 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the second angle A2 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the second LED Del2 increases.

[0198] In another embodiment, the second LED Del2 may have a trapezoidal shape in which one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0199] One corner of the triangular third LED Del3 is set opposite to one corner of the triangular second LED Del2.

[0200] For example, in the second LED Del2, the upper left corner can be a triangle; in the third LED Del3, the upper right corner can be a triangle.

[0201] The second LED Del2 has a trapezoidal shape with a third length L3 and a fourth length L4 along the horizontal and vertical directions, respectively, wherein the portion opposite to one corner is rounded; the second assembly groove 212b has a trapezoidal shape larger than that of the second LED Del2.

[0202] For example, the third length L3 and the fourth length L4 may be about 10 μm and about 21 μm, respectively, and the second assembly groove 212b may have a horizontal length of about 14 μm and a vertical length of about 25 μm.

[0203] The top surface of the second LED Del2 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be trapezoidal, wherein the portion opposite to one corner is rounded; the second surface S2 may be triangular.

[0204] As a result, the second LED Del2 was stably assembled into the second assembly trench 212b.

[0205] According to the fifth embodiment of the present invention, the third light-emitting diode (LED) Del3 of the third sub-pixel SP3 of the display device 110 has a trapezoidal shape including a rounded portion, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the third angle A3 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the third assembly trench 212c of the assembly substrate 210 on which the third LED Del3 is assembled has a trapezoidal shape corresponding to the third LED Del3.

[0206] When the third angle A3 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the third angle A3 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the third LED Del3 increases.

[0207] In another embodiment, the third LED Del3 may have a trapezoidal shape in which one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0208] The third LED Del3 has a trapezoidal shape with a fifth length L5 and a sixth length L6 along the horizontal and vertical directions, respectively, wherein the portion opposite to one corner is rounded; the third assembly groove 212c has a trapezoidal shape larger than that of the third LED Del3.

[0209] For example, the fifth length L5 and the sixth length L6 can be about 10 μm and about 21 μm, respectively, and the third assembly groove 212c can have a horizontal length of about 14 μm and a vertical length of about 25 μm.

[0210] The top surface of the third LED Del3 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be trapezoidal, wherein the portion opposite to one corner is rounded; the second surface S2 may be triangular.

[0211] As a result, the third LED Del3 was stably assembled into the third assembly trench 212c.

[0212] Figure 13This is a view showing the second and third light-emitting diodes for manufacturing a display device according to the sixth embodiment of the present invention, and the second and third assembly trenches of the assembly substrate.

[0213] exist Figure 13 In the display device 110 according to the sixth embodiment of the present invention, the second light-emitting diode (LED) Del2 of the second sub-pixel SP2 has a pentagon including a rounded portion, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the second angle A2 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the second assembly trench 212b of the assembly substrate 210 on which the second LED Del2 is assembled has a pentagon corresponding to the second LED Del2.

[0214] When the second angle A2 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the second angle A2 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the second LED Del2 increases.

[0215] In another embodiment, the second LED Del2 may have a pentagon in which one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0216] One corner of the triangular third LED Del3 is set opposite to one corner of the triangular second LED Del2.

[0217] For example, in the second LED Del2, the upper left corner can be a triangle; in the third LED Del3, the upper right corner can be a triangle.

[0218] The second LED Del2 has a pentagon with a third length L3 and a fourth length L4 along the horizontal and vertical directions, respectively, wherein the portion opposite to one corner is rounded; the second assembly groove 212b has a pentagon larger than the second LED Del2.

[0219] For example, the third length L3 and the fourth length L4 may be about 10 μm and about 21 μm, respectively, and the second assembly groove 212b may have a horizontal length of about 14 μm and a vertical length of about 25 μm.

[0220] The top surface of the second LED Del2 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be pentagonal, wherein the portion opposite one corner is rounded; the second surface S2 may be triangular.

[0221] As a result, the second LED Del2 was stably assembled into the second assembly trench 212b.

[0222] According to the sixth embodiment of the present invention, the third light-emitting diode (LED) Del3 of the third sub-pixel SP3 of the display device 110 has a pentagon including a rounded portion, wherein one corner corresponding to the second electrode 170 has an angle of about 45 degrees to about 55 degrees (the third angle A3 between the two connected sides has a shape of about 45 degrees to about 55 degrees), and wherein the third assembly trench 212c of the assembly substrate 210 on which the third LED Del3 is assembled has a pentagon corresponding to the third LED Del3.

[0223] When the third angle A3 is less than approximately 45 degrees, the distinguishability (exclusivity) between the second LED Del2 and the third LED Del3 is reduced. When the third angle A3 is greater than approximately 55 degrees, the likelihood of manufacturing degradation of the third LED Del3 increases.

[0224] In another embodiment, the third LED Del3 may have a pentagon in which one corner corresponding to the first electrode 168 has an angle of about 45 degrees to about 55 degrees.

[0225] The third LED Del3 has a pentagon with a fifth length L5 and a sixth length L6 along the horizontal and vertical directions, respectively, wherein the portion opposite to one corner is rounded; the third assembly groove 212c has a pentagon larger than the third LED Del3.

[0226] For example, the fifth length L5 and the sixth length L6 can be about 10 μm and about 21 μm, respectively, and the third assembly groove 212c can have a horizontal length of about 14 μm and a vertical length of about 25 μm.

[0227] The top surface of the third LED Del3 includes: a first surface S1 having a first electrode 168 above the step difference in the cross-sectional view; and a second surface S2 having a second electrode 170 below the step difference in the cross-sectional view (see...). Figure 3 The first surface S1 may be pentagonal, wherein the portion opposite one corner is rounded; the second surface S2 may be triangular.

[0228] As a result, the third LED Del3 was stably assembled into the third assembly trench 212c.

[0229] In the display device 110 according to the second to sixth embodiments of the present invention, the first LED Del1, the second LED Del2, and the third LED Del3 are formed with angles having asymmetrical corners that are different from each other; the first assembly groove 212a, the second assembly groove 212b, and the third assembly groove 212c are formed with shapes corresponding to the first LED Del1, the second LED Del2, and the third LED Del3. As a result, the exclusivity among the first LED Del1, the second LED Del2, and the third LED Del3 is improved, color mixing caused by incorrect assembly of the first LED Del1, the second LED Del2, and the third LED Del3 is prevented, thereby obtaining a relatively high resolution.

[0230] Therefore, by forming the light-emitting diodes into asymmetrical corners, color mixing is prevented and the manufacturing process is optimized. Furthermore, by forming red, green, and blue light-emitting diodes into different asymmetrical corners, simultaneous assembly technology is applied to relatively high resolutions.

[0231] Those skilled in the art will readily recognize that various modifications and variations can be made to this invention without departing from its scope. Therefore, this invention is intended to cover any modifications and variations that fall within the scope of the appended claims and their equivalents.

Claims

1. A display device, comprising: A display panel having a display area and a non-display area located around the periphery of the display area; The display area contains multiple gate lines and multiple data lines, which intersect each other to define a first sub-pixel, a second sub-pixel, and a third sub-pixel; A driving transistor is located in each of the first sub-pixel, the second sub-pixel, and the third sub-pixel and is connected to the plurality of gate lines and the plurality of data lines; as well as A first light-emitting diode, a second light-emitting diode, and a third light-emitting diode are respectively located in a first sub-pixel, a second sub-pixel, and a third sub-pixel and connected to the driving transistor. A corner of the first light-emitting diode, a corner of the second light-emitting diode, and a corner of the third light-emitting diode have different asymmetrical corner shapes from each other.

2. The display device according to claim 1, wherein the first light-emitting diode has one of a square, rhomboid, teardrop, and hexagonal shape.

3. The display device according to claim 1, wherein one corner of the second light-emitting diode and one corner of the third light-emitting diode are configured to face each other.

4. The display device according to claim 3, wherein the second light-emitting diode has a parallelogram shape and the third light-emitting diode has an equilateral trapezoid shape.

5. The display device according to claim 3, wherein the second light-emitting diode is trapezoidal and the third light-emitting diode is trapezoidal.

6. The display device according to claim 3, wherein the second light-emitting diode has a trapezoidal shape including a rounded portion, and the third light-emitting diode has a trapezoidal shape including a rounded portion.

7. The display device according to claim 3, wherein the second light-emitting diode has a pentagon including a rounded portion, and the third light-emitting diode has a pentagon including a rounded portion.

8. The display device according to claim 1, wherein the first angle between the two sides of one corner of the first light-emitting diode is 90 degrees. The second angle between the two sides of one corner of the second light-emitting diode is 45 degrees to 55 degrees. The third angle between the two sides of one corner of the third light-emitting diode is 45 degrees to 55 degrees.

9. The display device according to claim 1, wherein each of the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode comprises: First semiconductor layer; An active layer on a first portion of the first semiconductor layer; A second semiconductor layer on the active layer; The first electrode on the second semiconductor layer; as well as The second electrode is located on the second portion of the first semiconductor layer.

10. The display device according to claim 9, wherein the top surface of each of the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode comprises: A first surface having the first electrode above the step difference in the cross-sectional view; And a second surface, which has the second electrode below the step difference in the cross-sectional view.

11. The display device according to claim 10, wherein the first surface of the first light-emitting diode has a V-shape, and the second surface of the first light-emitting diode has a square shape. The first surface of the second light-emitting diode has an equilateral trapezoidal shape, and the second surface of the second light-emitting diode has a triangular shape. The first surface of the third light-emitting diode has a parallelogram shape, and the second surface of the third light-emitting diode has a triangle shape.

12. The display device according to claim 10, wherein the first surface of the first light-emitting diode has a crescent shape, and the second surface of the first light-emitting diode has a fan shape. The first surface of the second light-emitting diode has an equilateral trapezoidal shape, and the second surface of the second light-emitting diode has a triangular shape. The first surface of the third light-emitting diode has a parallelogram shape, and the second surface of the third light-emitting diode has a triangle shape.

13. The display device according to claim 10, wherein the first surface of the first light-emitting diode has a chamfered V-shape, and the second surface of the first light-emitting diode has a square shape. The first surface of the second light-emitting diode has an equilateral trapezoidal shape, and the second surface of the second light-emitting diode has a triangular shape. The first surface of the third light-emitting diode has a parallelogram shape, and the second surface of the third light-emitting diode has a triangle shape.

14. The display device according to claim 10, wherein the first surface of the first light-emitting diode has a V-shape, and the second surface of the first light-emitting diode has a square shape. The first surface of the second light-emitting diode is trapezoidal, and the second surface of the second light-emitting diode is triangular. The first surface of the third light-emitting diode is trapezoidal, and the second surface of the third light-emitting diode is triangular.

15. The display device according to claim 10, wherein the first surface of the first light-emitting diode has a V-shape, and the second surface of the first light-emitting diode has a square shape. The first surface of the second light-emitting diode has a trapezoidal shape including a rounded portion, and the second surface of the second light-emitting diode has a triangular shape. The first surface of the third light-emitting diode has a trapezoidal shape including a rounded portion, and the second surface of the third light-emitting diode has a triangular shape.

16. The display device according to claim 10, wherein the first surface of the first light-emitting diode has a V-shape, and the second surface of the first light-emitting diode has a square shape. The first surface of the second light-emitting diode has a pentagonal shape including a rounded portion, and the second surface of the second light-emitting diode has a triangle. The first surface of the third light-emitting diode has a pentagonal shape including a rounded portion, and the second surface of the third light-emitting diode has a triangle.

17. The display device according to claim 1, wherein the first light-emitting diode has a first length of 14 μm in the horizontal direction and a second length of 14 μm in the vertical direction. The second light-emitting diode has a third length of 10 μm along the horizontal direction and a fourth length of 18 μm along the vertical direction. The third light-emitting diode has a fifth length of 10 μm along the horizontal direction and a sixth length of 18 μm along the vertical direction.

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