Display device

Abstract

The invention discloses a display device, which comprises a circuit substrate and a plurality of light-emitting units, and the plurality of light-emitting units are positioned on the circuit substrate. Each light-emitting unit comprises a plurality of light-emitting elements, a plurality of repairing areas and a plurality of covering parts. The plurality of light-emitting elements are separated from each other and are electrically connected with the circuit substrate. Each repairing area is located on one side of the corresponding light-emitting element. The plurality of covering members are separated from each other, a first covering member in the plurality of covering members covers a first light-emitting element in the plurality of light-emitting elements, and a second covering member in the plurality of covering members covers a first repair area in the plurality of repair areas.

Description

Technical Field

[0001] This invention relates to an optoelectronic device, and more particularly to a display device. Background Technology

[0002] With the development of technology, touch display devices have been widely used in daily life due to their user-friendly interface. For example, capacitive touch technology determines the position of the touch point by reacting to changes in capacitance caused by a touched object (such as a finger or stylus). Furthermore, due to the advantages of Micro-LED displays, such as energy saving, high efficiency, high brightness, and fast response time, Micro-LED touch display devices with touch functionality are expected to become one of the mainstream display products.

[0003] However, the design of Micro-LED touch display devices must not only consider light extraction efficiency and reliability, but also have good resistance to touch pressure to ensure that they can pass the touch pressure resistance test. Summary of the Invention

[0004] This invention provides a display device with good resistance to touch pressure.

[0005] One embodiment of the present invention provides a display device including a circuit board and a plurality of light-emitting units located on the circuit board. Each light-emitting unit includes a plurality of light-emitting elements, a plurality of repair areas, and a plurality of cover members. The plurality of light-emitting elements are separated from each other and electrically connected to the circuit board. Each repair area is located on one side of a corresponding light-emitting element. The plurality of cover members are separated from each other, wherein a first cover member of the plurality of cover members covers a first light-emitting element of the plurality of light-emitting elements, and a second cover member of the plurality of cover members covers a first repair area of ​​the plurality of repair areas.

[0006] In one embodiment of the present invention, the Young's modulus of the plurality of coverings is from 1 GPa to 10 GPa.

[0007] In one embodiment of the present invention, the projected area of ​​the plurality of covering members on the circuit board accounts for 5% to 30% of the upper surface area of ​​the circuit board.

[0008] In one embodiment of the present invention, the minimum distance between the side of the first cover and the side of the first light-emitting element is 1 μm to 10 μm.

[0009] In one embodiment of the present invention, the aforementioned plurality of coverings have a rectangular, trapezoidal or arc-shaped cross-sectional shape.

[0010] In one embodiment of the present invention, there are multiple gaps between the plurality of coverings, and the width of the plurality of gaps is greater than 0 μm and less than or equal to 10 μm.

[0011] In one embodiment of the present invention, the above-described display device further includes an insulating layer located on a plurality of light-emitting units and sealing a plurality of gaps.

[0012] In one embodiment of the present invention, the plurality of gaps described above are either in a vacuum or contain air or nitrogen.

[0013] In one embodiment of the present invention, the display device further includes a touch element, which is located above a plurality of light-emitting units and does not overlap the plurality of light-emitting units.

[0014] In one embodiment of the present invention, the above-described touch element overlaps the gap between multiple covers.

[0015] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1A This is a partial top view schematic diagram of a display device according to an embodiment of the present invention.

[0017] Figure 1B It is along Figure 1A A schematic diagram of the cross section line A-A'.

[0018] Figure 1C It is along Figure 1A A schematic diagram of the cross section drawn by section line B-B'.

[0019] Figure 2A and Figure 2B This is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0021] In the attached figures, the following labels are used:

[0022] 10, 20, 30: Display devices

[0023] 110: Circuit board

[0024] 112:Substrate

[0025] 114: Driver Circuit Layer

[0026] 120~124: Light-emitting element

[0027] 120S, 140S: Side View

[0028] 120T, 140T: Top surface

[0029] 130~133: Repair Area

[0030] 140~146, 140A, 140B: Cover parts

[0031] 150: Insulation layer

[0032] 160: Upper substrate

[0033] 170: Touch element

[0034] 180: Supporting structure

[0035] A-A', B-B': Section lines

[0036] CP: Connector

[0037] GP: gap

[0038] LU: Light-emitting unit

[0039] PD1~PD7: Pads

[0040] SL1, SL2, SL3: Signal lines

[0041] W1: Width

[0042] W2, W3: Minimum Spacing Detailed Implementation

[0043] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate elements are present. As used herein, "connection" can refer to a physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may refer to the presence of other elements between two elements.

[0044] It should be understood that although the terms "first," "second," "third," etc., may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or part from another. Therefore, the first "element," "component," "region," "layer," or "part" discussed below may be referred to as a second element, component, region, layer, or part without departing from the teachings of this document.

[0045] The terminology used herein is for the purpose of describing particular embodiments only and is not restrictive. As used herein, unless the content clearly indicates otherwise, the singular forms "a," "an," and "the" are intended to include the plural forms, including "at least one" or indicating "and / or." As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It should also be understood that, when used in this specification, the terms "comprising" and / or "including" specify the presence of the stated features, areas, integrals, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, areas, integrals, steps, operations, elements, components, and / or combinations thereof.

[0046] Furthermore, relative terms such as "down" or "bottom" and "up" or "top" may be used herein to describe the relationship between one element and another, as illustrated in the figures. It should be understood that relative terms are intended to include different orientations of the device beyond those shown in the figures. For example, if a device in one figure is flipped, an element described as being "down" of another element will be oriented "up" of that element. Thus, the exemplary term "down" can include both "down" and "up" orientations, depending on the specific orientation of the figure. Similarly, if a device in one figure is flipped, an element described as being "down" or "below" of another element will be oriented "above" that element. Thus, the exemplary terms "down" or "below" can include both "up" and "down" orientations.

[0047] Given the specific number of measurements discussed and the associated errors (i.e., limitations of the measurement system), the terms "about," "approximately," or "substantially" as used herein include the value and the average value within an acceptable range of deviations from the specific value as determined by one of ordinary skill in the art. For example, "about" may mean within one or more standard deviations of the value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the terms "about," "approximately," or "substantially" as used herein may be chosen based on the optical, etched, or other properties to select a more acceptable range of deviations or standard deviations, and may not apply to all properties without using a single standard deviation.

[0048] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having the same meaning as they have in the context of the relevant technology and the invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly defined herein.

[0049] This document describes exemplary embodiments with reference to cross-sectional views, which are schematic diagrams of idealized embodiments. Therefore, variations in shape as a result of, for example, manufacturing techniques and / or tolerances, are expected in the illustrations. Consequently, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but rather include, for example, shape deviations caused by manufacturing processes. For example, regions shown or described as flat may generally have rough and / or non-linear characteristics. Furthermore, the acute angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to show the precise shapes of the regions, nor are they intended to limit the scope of the claims.

[0050] Figure 1A This is a partial top view of a display device 10 according to an embodiment of the present invention. Figure 1B It is along Figure 1A A schematic diagram of the cross section line A-A'. Figure 1C It is along Figure 1A A schematic diagram of the cross-section along section line B-B'. Please refer to... Figure 1A The display device 10 includes a circuit board 110 and a light-emitting unit LU located on the circuit board 110. To make the illustration clearer, Figure 1A Some components shown in other diagrams are omitted. The following will be used in conjunction with... Figures 1A to 1C The embodiments of the various components and film layers of the display device 10 will be further described, but the present invention is not limited thereto.

[0051] Please refer to Figure 1A ,Although Figure 1A Only one light-emitting unit LU is shown; however, multiple light-emitting units LU may be disposed on the circuit board 110. For example, the light-emitting unit LU may serve as a pixel of the display device 10, and multiple light-emitting units LU may be arranged in an array on the circuit board 110, enabling the display device 10 to dynamically display various images.

[0052] The circuit board 110 of the display device 10 may include a substrate 112 and a driving circuit layer 114, wherein the driving circuit layer 114 may be located between the substrate 112 and the light-emitting unit LU, and the light-emitting unit LU may be electrically connected to the driving circuit layer 114. Specifically, the substrate 112 may be a transparent substrate or an opaque substrate, and its material may be glass, polyimide (PI), polycarbonate (PC), polyester (PET), cyclic olefin copolymer (COC), metallocene-based cyclic olefin copolymer (mCOC), or other suitable materials; the present invention is not limited thereto.

[0053] The driving circuit layer 114 may include components or lines required by the display device 10, such as driving elements, switching elements, storage capacitors, power lines, driving signal lines, timing signal lines, current compensation lines, detection signal lines, etc. For example, in some embodiments, the driving circuit layer 114 may include signal lines SL1, SL2, SL3 and pads PD1 to PD7, wherein pads PD1 and PD4 may be electrically connected to signal line SL1, pads PD2 and PD5 may be electrically connected to signal line SL2, pads PD3 and PD6 may be electrically connected to signal line SL3, and pad PD7 may be electrically connected to other signal lines, such as shared signal lines.

[0054] Each light-emitting unit LU may include a plurality of light-emitting elements 120. For example, the plurality of light-emitting elements 120 may constitute a plurality of sub-pixels of the light-emitting unit LU, such that each light-emitting unit LU includes a plurality of sub-pixels. In some embodiments, the plurality of light-emitting elements 120 may include three light-emitting elements 121, 122, and 123, but is not limited thereto. In some embodiments, the plurality of light-emitting elements 120 includes two light-emitting elements 121, one light-emitting element 122, and one light-emitting element 123. In other embodiments, the plurality of light-emitting elements 120 includes two light-emitting elements 121, two light-emitting elements 122, and two light-emitting elements 123. Light-emitting element 121 is, for example, a red light-emitting diode, light-emitting element 122 is, for example, a green light-emitting diode, and light-emitting element 123 is, for example, a blue light-emitting diode. In this way, light-emitting elements 121, 122, and 123 may each constitute a sub-pixel of the light-emitting unit LU, and the light-emitting unit LU may constitute a pixel of the display device 10.

[0055] Light-emitting elements 121, 122, and 123 are fabricated on a growth substrate and then transferred to a circuit board 110 via a mass transfer process, and are electrically connected to signal lines SL1, SL2, and SL3, respectively. For example, signal line SL1 can be electrically connected to pads PD1 and PD4, signal line SL2 can be electrically connected to pads PD2 and PD5, and signal line SL3 can be electrically connected to pads PD3 and PD6.

[0056] The anode of light-emitting element 121 can be electrically connected to pad PD1 or pad PD4, the anode of light-emitting element 122 can be electrically connected to pad PD2 or pad PD5, the anode of light-emitting element 123 can be electrically connected to pad PD3 or pad PD6, and the cathodes of light-emitting elements 121, 122, and 123 can all be electrically connected to pad PD7. In some embodiments, light-emitting element 121 is located on pads PD1 and PD7 and its anode is electrically connected to pad PD1, light-emitting element 122 is located on pads PD2 and PD7 and its anode is electrically connected to pad PD2, light-emitting element 123 is located on pads PD3 and PD7 and its anode is electrically connected to pad PD3, and the cathodes of light-emitting elements 121, 122, and 123 are all electrically connected to pad PD7, but this is not a limitation. In some embodiments, light-emitting element 121 is located on pads PD1 and PD7 with its anode electrically connected to pad PD1; light-emitting element 122 is located on pads PD5 and PD7 with its anode electrically connected to pad PD5; light-emitting element 123 is located on pads PD3 and PD7 with its anode electrically connected to pad PD3; and the cathodes of light-emitting elements 121, 122, and 123 are all electrically connected to pad PD7. The electrical connection between light-emitting elements 121, 122, and 123 and pads PD1 to PD7 may also include other conductive materials, such as solder or conductive adhesive, as needed.

[0057] The light-emitting unit LU may also be configured with multiple repair areas 130, and the number of repair areas 130 in each light-emitting unit LU may be greater than or equal to the number of light-emitting elements 120. For example, the light-emitting unit LU includes three light-emitting elements 121, 122, and 123, and the multiple repair areas 130 in the light-emitting unit LU include repair areas 131, 132, and 133, wherein repair areas 131, 132, and 133 may be adjacent to light-emitting elements 121, 122, and 123, respectively. When misalignment, tilting, or omission occurs during the mass transfer of light-emitting elements 121, 122, and 123, the light-emitting elements 121, 122, or 123 can be repositioned in repair areas 131, 132, or 133 through a repair process to repair the sub-pixels that are not functioning properly.

[0058] In some embodiments, if the light-emitting elements 121, 122, and 123 are pre-transferred in large quantities to directly above the pads PD1, PD2, and PD3, then the areas directly above the pads PD4, PD5, and PD6 can be used as repair areas 131, 132, and 133, respectively.

[0059] The light-emitting unit LU may also include multiple covers 140, which are separated from each other and cover multiple light-emitting elements 120 and multiple repair areas 130 respectively. In other words, the covers 140 may also cover the repaired light-emitting elements. The covers 140 can help prevent or delay moisture intrusion into the light-emitting elements 120, enabling the display device 10 to pass the High Temperature Humidity Bias Test (THB) with good reliability.

[0060] For example, the material of the cover 140 includes photoresist or other suitable materials. In some embodiments, the Young's modulus of the cover 140 is above about 1 GPa, for example, from about 1 GPa to 10 GPa, but not limited thereto. In some embodiments, the refractive index of the cover 140 is in the range of about 1.5 to 2.1, for example, about 1.8, but not limited thereto.

[0061] In some embodiments, the number of covers 140 is equal to the total number of light-emitting elements 120 and repair areas 130. Each cover 140 may completely cover the corresponding light-emitting element 120 or the corresponding repair area 130. For example, the covers 140 include covers 141-146, wherein cover 141 completely covers light-emitting element 121, cover 142 completely covers light-emitting element 122, cover 143 completely covers light-emitting element 123, cover 144 completely covers repair area 131, cover 145 completely covers repair area 132, and cover 146 completely covers repair area 133. In this way, the footprint of the covers 140 can be increased, so that the covers 140 can help enhance the structural strength of the display device 10. In some embodiments, the projected area of ​​the covers 141-146 on the circuit board 110 accounts for 5% to 30% of the upper surface area of ​​the circuit board 110, for example, 24%. For example, when the projected area of ​​the cover 141 to 146 on the circuit board 110 reaches 24% of the area of ​​the upper surface of the circuit board 110 and the Young's modulus of the cover 140 is about 1 GPa, the display device 10 can withstand a pressure load of about 1.5 kg.

[0062] Multiple gaps GP can be provided between multiple covers 140, separating the covers 140 from each other, so that each cover 140 has an independent structure. Since the sidewalls of covers 141-146 can reflect light, the light extraction efficiency of the light-emitting element 120 can be further improved, and the multiple gaps GP can prevent the light emitted by adjacent light-emitting elements 120 from interfering with each other and affecting the light color. In some embodiments, the width W1 of each gap GP is greater than 0 μm and less than or equal to 10 μm, for example, about 1 μm or 2 μm. In some embodiments, the width W1 of multiple gaps GP can be exactly the same, but is not limited thereto. In other embodiments, the width W1 of multiple gaps GP can not be exactly the same. In some embodiments, the minimum distance W2 between the side surface 140S of each cover 140 and the side surface 120S of the corresponding light-emitting element it covers is 1 μm to 10 μm, for example, about 1 μm or 2 μm. In some embodiments, the minimum spacing W3 between the top surface 140T of each cover 140 and the top surface 120T of the corresponding light-emitting element it covers is 1 μm to 10 μm, for example, about 3 μm or 8 μm.

[0063] The display device 10 may further include an insulating layer 150 and an upper substrate 160. The insulating layer 150 may be disposed on a plurality of light-emitting units LU, and the upper substrate 160 may be disposed on the insulating layer 150. In other words, the insulating layer 150 may be located between the plurality of light-emitting units LU and the upper substrate 160. In some embodiments, the insulating layer 150 may be disposed on a plurality of covers 140, and the covers 140 physically contact the insulating layer 150, such that the plurality of covers 140 are sandwiched between the upper substrate 160 and the circuit board 110. In this way, the plurality of covers 140 can keep the gap between the upper substrate 160 and the circuit board 110 stable, thereby improving the structural strength of the display device 10. The insulating layer 150 and the circuit board 110 can seal the plurality of gaps GP, and the plurality of gaps GP may be a vacuum or contain air or nitrogen. In some embodiments, the vacuum degree in the plurality of gaps GP is approximately 1 x 10⁻⁶. -5 Torr up to 10 Torr.

[0064] The display device 10 further includes a touch element 170, which may be located above a plurality of light-emitting units LU. In some embodiments, the touch element 170 includes touch electrodes. For example, an upper substrate 160 is located above the touch element 170, and the touch element 170 is disposed between the insulating layer 150 and the upper substrate 160 to avoid unnecessary electrical connections between the touch element 170 and other conductive elements. In some embodiments, the touch element 170 does not overlap the plurality of light-emitting elements 120 to avoid affecting the light emission of the light-emitting elements 120. In some embodiments, the touch element 170 overlaps the gap GP between the plurality of covers 140. The touch element 170 may include an oxide of a metal material, a nitride of a metal material, an oxide oxynitride of a metal material, or other suitable transparent conductive materials, or a stacked layer of the above transparent conductive materials, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium gallium zinc oxide, or a stacked layer of at least two of the above, but is not limited thereto.

[0065] The display device 10 may further include a support structure 180, which may be disposed between the upper substrate 160 and the circuit board 110 to stabilize the gap between the upper substrate 160 and the circuit board 110 together with a plurality of cover members 140. In some embodiments, the support structure 180 is disposed only at the outermost periphery of the display device 10. For example, Figure 1A The light-emitting unit LU shown is a light-emitting unit adjacent to the support structure 180. The material of the support structure 180 may include inorganic materials, organic materials, mixtures of inorganic and organic materials, or combinations or stacks of the above materials. For example, inorganic materials may include oxides or nitrides, such as silicon oxide (SiOx) or silicon nitride (SiNx), but are not limited thereto. Organic materials may include photoresist materials, curable resin materials, or other suitable materials.

[0066] In some embodiments, as follows Figures 1B to 1C Testing was conducted on the display device 10, in which the plurality of covers 140 substantially contact the insulating layer 150, and a contrast display device, differing only in that the plurality of covers 140 do not substantially contact the insulating layer 150 (e.g., in which the height of the covers 140 is less than the distance between the insulating layer 150 and the circuit board 110). This demonstrates that, as shown... Figures 1B to 1C The light emission efficiency of the display device 10 shown is about 10% higher than that of the comparative display device, and the power consumption is reduced by about 14%. In addition, the display device 10 can operate for more than 240 hours (THB 60°C / RH90% T240hr) without failure in an environment with a temperature of 60°C and a relative humidity of 90%, and can pass the THB test to show good reliability. It can also pass the touch pressure resistance test.

[0067] The following uses Figures 2A to 3 Further embodiments of the present invention will be described, and the following will be used... Figures 1A to 1C The component designations and related content of the embodiments are as follows: the same designations are used to represent the same or similar components, and descriptions of identical technical content are omitted. For explanations of the omitted parts, please refer to... Figures 1A to 1C The embodiments described below will not be repeated.

[0068] Figure 2A and Figure 2B This is a cross-sectional schematic diagram of a display device 20 according to an embodiment of the present invention. Please refer to... Figures 2A to 2B The display device 20 may include a plurality of light-emitting elements 120, a plurality of repair areas 130 (including repair areas 131, 132, and 133), a plurality of cover members 140A, an insulating layer 150, an upper substrate 160, a touch element 170, and a support structure 180 disposed on a circuit board 110.

[0069] With Figures 1A to 1C Compared to the display device 10 shown, Figures 2A to 2B The main difference in the display device 20 shown is that the upper part of the cover 140A of the display device 20 has a trapezoidal cross-sectional shape, and the top surface of the cover 140A contacts the bottom surface of the insulating layer 150. In this way, the cover 140A can still enhance the structural strength of the display device 20. In addition, the display device 20 can also pass the THB test and touch withstand voltage test, and has acceptable light emission efficiency.

[0070] In some embodiments, the light-emitting element 120 of the display device 20 includes light-emitting elements 121, 123, and 124, wherein, as shown in the figures... Figure 1B The light-emitting element 122, which is disposed on the pad PD2, is removed, for example, due to misalignment during mass transfer, and the light-emitting element 124 is disposed on the pad PD5, for example, located in the repair area 132, through a repair process. In some embodiments, the light-emitting element 124 is electrically connected to the pad PD5 via a connector CP. The connector CP may be made of conductive adhesive or other suitable conductive bonding material.

[0071] Figure 3 This is a cross-sectional schematic diagram of a display device 30 according to an embodiment of the present invention. Please refer to... Figure 3 The display device 30 may include, for example, Figure 1A The diagram shows multiple light-emitting units LU, an insulating layer 150, an upper substrate 160, a touch element 170, and a support structure 180 disposed on a circuit board 110, and each light-emitting unit LU includes multiple light-emitting elements 120, such as... Figure 1C The multiple repair areas 130 and multiple covers 140B are shown.

[0072] With Figures 1A to 1C Compared to the display device 10 shown, Figure 3 The main difference in the display device 30 shown is that the upper part of the cover 140B of the display device 30 has an arc-shaped cross-section, and the top surface of the cover 140B contacts the bottom surface of the insulating layer 150. In this way, the cover 140B can enhance the structural strength of the display device 30 and pass the touch resistance test. In addition, the display device 30 can also pass the THB test and has good light extraction efficiency.

[0073] In summary, the display device of the present invention, by providing multiple separately separated covers on the light-emitting element and the repair area, can help prevent or delay moisture intrusion into the light-emitting element, while enhancing the structural strength of the display device, thus enabling the display device to have ideal reliability and pass the touch pressure resistance test. Furthermore, the sidewalls of the covers can reflect the light emitted from the light-emitting element, thereby further improving the light extraction efficiency of the display device.

[0074] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A display device, characterized in that, include: Circuit board; as well as Multiple light-emitting units are located on the circuit board, wherein each light-emitting unit includes: Multiple light-emitting elements are separated from each other and electrically connected to the circuit board; Multiple repair areas, each repair area being located on one side of a corresponding light-emitting element; and Multiple cover components, separate from each other. The first cover of the plurality of covers covers the first light-emitting element of the plurality of light-emitting elements, and the second cover of the plurality of covers covers the first repair area of ​​the plurality of repair areas.

2. The display device as claimed in claim 1, characterized in that, The Young's modulus of the plurality of coverings is from 1 GPa to 10 GPa.

3. The display device as claimed in claim 1, characterized in that, The projected area of ​​the plurality of covers on the circuit board accounts for 5% to 30% of the upper surface area of ​​the circuit board.

4. The display device as claimed in claim 1, characterized in that, The minimum distance between the side of the first cover and the side of the first light-emitting element is 1 μm to 10 μm.

5. The display device as claimed in claim 1, characterized in that, The plurality of coverings have rectangular, trapezoidal or arc-shaped cross-sections.

6. The display device as claimed in claim 1, characterized in that, The plurality of coverings have a plurality of gaps between them, and the width of the plurality of gaps is greater than 0 μm and less than or equal to 10 μm.

7. The display device as claimed in claim 6, characterized in that, It also includes an insulating layer located on the plurality of light-emitting units and sealing the plurality of gaps.

8. The display device as claimed in claim 7, characterized in that, The gaps are either in a vacuum or contain air or nitrogen.

9. The display device as claimed in claim 1, characterized in that, It also includes a touch element located above the plurality of light-emitting units, and the touch element does not overlap the plurality of light-emitting units.

10. The display device as claimed in claim 9, characterized in that, The touch element overlaps the gap between the plurality of covers.

Images