Display device

Abstract

The present disclosure relates to a display device. The display device can include a display panel, a cover member disposed on a front surface of the display panel, a fixing frame disposed on a rear surface of the cover member and including a fastening member, a core plate disposed on a rear surface of the fixing frame and including a coupling block, a fastener coupled to the coupling block and the fastening member to couple the fixing frame to the core plate, and a stress distribution device disposed on the fastening member, the stress distribution device configured to disperse a stress applied to the cover member due to coupling of the fixing frame to the core plate using the fastener. According to the present disclosure, by dispersing and mitigating the stress generated during fastening between the fixing frame and the core plate, it is possible to expect mitigation of the phenomenon of cover glass warping or unevenness.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2022-0149831, filed on November 10, 2022, the entire contents of which are incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to a display device, and more specifically to a display device capable of dispersing and mitigating stress generated during the fastening of the fixing frame and core plate, thereby reducing unevenness and warping of the cover glass. Background Technology

[0004] The rapid development of displays for visual representation of electrical information signals has enabled the development of various display devices with excellent performance in terms of compactness, light weight and low power consumption.

[0005] Liquid crystal display (LCD) devices and organic light-emitting diode (OLED) devices are representative examples of display devices.

[0006] Among these display devices, self-emissive display devices, such as organic light-emitting displays, are considered competitive applications for achieving compact and vivid color display without the need for a separate light source. The display device has a self-emissive component at each sub-pixel, which consists of two electrodes facing each other and a light-emitting layer between the two electrodes, emitting light when transported electrons and holes recombine.

[0007] A display device may include a display panel and several other components to provide various functions. For example, the display assembly may include one or more display driver circuits for controlling the display panel. Examples of driver circuits include gate drivers, light-emitting (source) drivers, power (VDD) routers, electrostatic discharge (ESD) circuits, multiplexing (MUX) circuits, data signal lines, cathode contacts, and other functional elements.

[0008] The display assembly may also include multiple peripheral circuits to provide various additional functions such as touch sensing or fingerprint recognition. Some components may be placed on the display panel itself, while others may be placed on a thin film or circuit board disposed outside the display panel.

[0009] The advantage of organic light-emitting display devices lies in their ability to be fabricated as thin-film devices using a light-emitting layer between electrodes. Furthermore, since organic light-emitting display devices do not require a separate light source, they are well-suited for designing various forms, such as flexible, bendable, and foldable displays.

[0010] The application of display devices, including those with self-emissive components such as organic light-emitting displays, is expanding into various fields, such as traditional electronic devices (e.g., televisions (TVs)) as well as automotive dashboards, windshields, mirror displays, and indoor and outdoor signage. These display devices require optimization to adapt to their operating environments.

[0011] With the advent of the electric vehicle era, many automakers are equipping their electric vehicles with displays such as LCDs and OLEDs to show various vehicle operating information. However, traditional display devices installed in vehicles have well-known drawbacks and limitations.

[0012] For example, when a display device is installed in a vehicle, the core plate and set frame can be secured to the vehicle's dashboard or other internal structural components using fasteners, extending into the area in front of the driver's seat or front passenger seat. As will be further described below, this fastening, typically using screws, often results in significant warping or unevenness of the display, and more specifically, warping or unevenness of the cover glass. Warping and unevenness can concentrate near the location of the fasteners and can damage the display, and when the display is a touchscreen device, it also poses a risk of touch malfunction. Therefore, it would be beneficial to have a display device that overcomes the defects and shortcomings of conventional displays.

[0013] Figure 12 illustrates the fastening structure of a conventional display device between the core board 4 and the fixing frame 3, which serves as the background for the advantages and benefits of the present disclosure. The front surface of the fixing frame 3 can be bonded to the cover glass 1 by resin 2. The rear surface of the fixing frame 3 can be fastened to the core board 4 by bolts 6 passing through bolt holes 5 formed in the connecting portion 5a of the fixing frame 3. The bolts 6 are machined to have threads 6a and are fastened to the bolt holes 5 by screwing the bolts 6 into the bolt holes 5.

[0014] Here, bolt 6 is screwed in, applying force B1 to pull the connecting parts 5a together. In this case, since the connecting parts 5a are part of the fixed frame 3, stress B2 is generated along the direction of bolt 6 in the area of ​​the fixed frame 3 corresponding to the connecting parts 5a. In other words, when bolt 6 is screwed in, bolt 6 applies force B1 to the fixed frame 3, which results in a force B2 on the cover glass 1, wherein force B2 is generally a vertically upward force (in the orientation of Figure 12), which tends to deform the cover glass 1.

[0015] As described above, since the fixing frame 3 is bonded to the cover glass 1 by the resin 2, stress is generated in region F of the cover glass 1 (region F corresponds to the fastening region in the direction of the bolt), which leads to deformation.

[0016] To ensure reliable mounting of the display device, strong bolts are required for tightening. However, this can lead to excessive stress B2 on the mounting frame 3, causing warping or unevenness of the cover glass 1 protecting the display panel. This warping or unevenness occurs particularly in the area where the mounting screws are located, typically at the edge of the cover glass 1. This affects the appearance and introduces a risk of touch malfunction. Summary of the Invention

[0017] This disclosure is provided to address the aforementioned problems in the related technical field and is intended to provide a display device that can reduce warping or unevenness of the cover glass by dispersing and mitigating stress generated during the fastening of the fixing frame and the core plate.

[0018] To achieve the above objectives, this disclosure provides a display device that may include: a display panel; a cover member disposed on a front surface of the display panel; a fixing frame disposed on a rear surface of the cover member and including fastening members; a core plate disposed on the rear surface of the fixing frame and including a connecting block; a fastener connected to the connecting block and the fastening member to connect the fixing frame to the core plate; and a stress distribution device disposed on the fastening member, the stress distribution device being configured to distribute the stress applied to the cover member due to the fastener connecting the fixing frame to the core plate.

[0019] Furthermore, in embodiments of this disclosure, the stress distribution device may further include: an expansion member disposed at the lower portion of the fastening member and expanding outward from the fastening member; and a stress-free space formed inside the expansion member and communicating with a fastening hole in the connecting block.

[0020] Furthermore, in embodiments of this disclosure, the expansion member may include: an upper flange connected to the lower portion of the fastening member and expanding outward from the fastening member in a radial direction; and a side flange connected to the upper flange between the lower portion of the upper flange and the fixing frame.

[0021] Furthermore, in embodiments of this disclosure, the expansion member can be formed in a cylindrical shape.

[0022] Furthermore, in embodiments of this disclosure, the stress-free space may be formed inside the expansion member and may have a circular or polygonal shape.

[0023] Furthermore, in embodiments of this disclosure, the stress distribution device may also include a support member that is connected to the outer surface of the fastening member and arranged on the upper portion of the upper flange.

[0024] Furthermore, in embodiments of this disclosure, the stress distribution device may also include a radially extending protrusion that projects outward from the side flange.

[0025] Furthermore, in embodiments of this disclosure, the core plate may also include a protruding block connected to the lower portion of the connecting block, protruding toward the side flange, and disposed on the lower portion of the protrusion.

[0026] Furthermore, in embodiments of this disclosure, the core plate may also include an extension block connected to the lower portion of the connecting block and arranged to surround the upper flange and the side flange.

[0027] Furthermore, in embodiments of this disclosure, the display device may also include an adhesive member disposed between the cover member and the fixed frame and for bonding the cover member to the fixed frame.

[0028] Furthermore, in embodiments of this disclosure, the cover member may include an effective area corresponding to the display panel in position, and an ineffective area outside the effective area, and the adhesive member is disposed in the ineffective area.

[0029] Furthermore, in embodiments of this disclosure, the fastening member and the connecting block may be arranged in the ineffective area.

[0030] Furthermore, in embodiments of this disclosure, the adhesive member may include a non-adhesive region formed by cutting away a shape corresponding to the internal shape of the stress-free space.

[0031] This disclosure also provides a display device that may include: a display panel; a cover disposed on the display panel; a frame on the cover, the frame including a fastening member; a fastener configured to be received by the fastening member to attach the frame to the cover; and a stress distribution device on the fastening member, the width of the stress distribution device being greater than the width of the fastening member, to distribute stresses applied to the cover in response to attaching the frame to the cover via the fastener.

[0032] Furthermore, in embodiments of this disclosure, the frame may be a fixed frame, and the display device may further include a core plate disposed on the fixed frame, the core plate including a connecting block aligned with the fastening member.

[0033] Furthermore, in embodiments of this disclosure, the core plate can be connected to the fixed frame via fasteners inserted through the connecting block and the fastening member.

[0034] Furthermore, in embodiments of this disclosure, the stress distribution device may include an expansion member and a hollow cavity inside the expansion member.

[0035] Furthermore, in embodiments of this disclosure, the hollow cavity may be arranged around a position on the cover aligned with the fastener, and the hollow cavity is configured to disperse stress away from the position on the cover aligned with the fastener.

[0036] Furthermore, in embodiments of this disclosure, the stress distribution device may also include at least one support member on the expansion member and on the fastening member.

[0037] Furthermore, in embodiments of this disclosure, the at least one support member may be a plurality of support struts radially spaced apart from each other around the fastening member.

[0038] According to this disclosure, warping or unevenness of the cover glass can be mitigated by dispersing and reducing stress, wherein the warping or unevenness of the cover glass is caused by stress generated during the fastening of the fixing frame and the core plate.

[0039] It can also improve visibility by reducing distortion of the vehicle's front screen. It can also improve the appearance of the vehicle's front screen.

[0040] It can also prevent touch response malfunctions and degradation of the displayed image quality. Attached Figure Description

[0041] Figure 1 This is a front view of a display device according to an embodiment of the present disclosure;

[0042] Figure 2 This is a rear view of a display device according to an embodiment of the present disclosure;

[0043] Figure 3 This is an exploded view of a display device according to an embodiment of the present disclosure;

[0044] Figure 4 This is a cross-sectional view of a light-emitting component according to an embodiment of the present disclosure;

[0045] Figure 5 This is a perspective view of a stress dispersion unit according to an embodiment of the present disclosure;

[0046] Figure 6 This is a cross-sectional view of a stress dispersion unit according to an embodiment of the present disclosure.

[0047] Figure 7A This is a side cross-sectional view showing the structure of the stress dispersion unit and the core plate according to the first embodiment of the present disclosure;

[0048] Figure 7B This is a side cross-sectional view showing the structure of the stress dispersion unit and the core plate according to a second embodiment of the present disclosure.

[0049] Figure 7C This is a side cross-sectional view showing the structure of the stress dispersion unit and the core plate according to the third embodiment of the present disclosure;

[0050] Figures 8A to 8D These are illustrations showing various forms of the expansion member of the stress dispersion unit according to embodiments of the present disclosure;

[0051] Figures 9A to 9D These are illustrations showing various shapes of a portion of an adhesive member corresponding to an expansion member according to embodiments of the present disclosure;

[0052] Figure 10A This is a diagram illustrating the stress distribution in the cover glass when the conventional fixed frame and core panel are fastened.

[0053] Figure 10B This is a diagram illustrating the stress distribution in the cover glass when the fixed frame and core plate are fastened according to an embodiment of the present disclosure.

[0054] Figure 11A This is a diagram illustrating the stress distribution formed in the fastening area along the edge of a conventional cover glass;

[0055] Figure 11B This is a diagram illustrating the stress distribution formed along the edge of the cover glass in the fastening area according to an embodiment of the present disclosure.

[0056] Figure 12 is a cross-sectional view showing the fastening structure between the conventional core board and the fixed frame. Detailed Implementation

[0057] The advantages and features of this disclosure, as well as the methods for achieving these advantages and features, will become clear from the detailed description of the embodiments below with reference to the accompanying drawings. However, the disclosed invention can be implemented in many different forms and should not be construed as limited to the embodiments described herein; rather, these embodiments are provided to make this disclosure thorough and complete, and to fully convey the inventive concept to those skilled in the art, and the invention will be defined only by the appended claims.

[0058] The shapes, dimensions, scales, angles, numbers, etc., shown in the accompanying drawings to illustrate embodiments of the present disclosure are merely exemplary and therefore the disclosure is not limited thereto. Throughout the specification, the same reference numerals refer to the same parts. Furthermore, detailed descriptions of well-known technologies may be omitted in this disclosure to avoid obscuring the subject matter. When terms such as “comprising,” “having,” “including,” or “made of” are used in this specification, it should be understood that additional elements or steps may be included unless specifically used with “only.” Unless otherwise expressly stated, when a part is represented in the singular, its plural form is intended to be included as well.

[0059] When explaining these components, even if there is no explicit description, it is interpreted as including the error range.

[0060] When describing positional relationships, for example, when the relationship between two parts is described as "on top of", "on the top of", "below", "next to", etc., one or more other parts may be located between the two parts unless "directly" or "closely" is used.

[0061] When a device or layer is referred to as being "on" another device or layer, this includes situations where a device or layer is directly located on another device or layer, or where there is another device or layer placed between the two devices or layers.

[0062] Although the terms "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from others. Therefore, the first component mentioned below can be a second component in the technical sense of this disclosure.

[0063] The dimensions and thicknesses of the components depicted in the accompanying drawings are for ease of description and should not be construed as limiting the scope of this disclosure.

[0064] The features of the various embodiments of this disclosure can be combined or assembled, in part or in whole, in various interconnected and interoperable technical ways that are obvious to those skilled in the art, and each embodiment can be implemented independently or in combination with related embodiments.

[0065] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0066] In this disclosure, the term "display device" is used in a narrow sense to refer to display devices such as liquid crystal modules (LCMs), organic light-emitting diode (OLED) modules, and quantum dot (QD) modules, each of which includes a display panel and a panel driving unit for operating the display panel. It may also include assemblies of electronic equipment or devices, such as device displays, including complete or final products such as laptops, televisions, computer monitors, automotive displays, or other forms of device displays provided to vehicles, as well as mobile electronic devices such as smartphones or tablets that include LCMs, OLED modules, QD modules, etc.

[0067] Therefore, in this disclosure, the display device may include not only the display device itself in the narrow sense, such as LCM, OLED module, QD module, but also complete sets of equipment as application products or final consumer devices, each of which includes LCM, OLED module, QD module, etc.

[0068] Furthermore, in some cases, an LCM, OLED module, or QD module, including a display panel and a panel driving unit, can be referred to as a "display device" in the narrow sense, while an electronic device that is a complete product including an LCM, OLED module, or QD module can be referred to as a "kit." For example, a display device in the narrow sense may include a liquid crystal (LCD), organic light-emitting diode (OLED), or quantum dot (QD) display panel and a source printed circuit board (PCB) that serves as a control unit for driving the display panel, while a kit may further include a set of PCBs that serve as a control unit to be electrically connected to the source PCB and control the entire kit.

[0069] The display panel used in this embodiment may include all types of display panels, such as liquid crystal display panels, organic light-emitting diode (OLED) display panels, quantum dot (QD) display panels, and electroluminescent display panels, but is not limited to the specific display panel used in this embodiment that can bend the bezel using a flexible substrate and the underlying backplate support structure. Furthermore, the display panel used in the embodiments of this specification is not limited to the shape or size of the display panel.

[0070] For example, when the display panel is an organic light-emitting diode (OLED) display panel, it may include multiple gate lines and data lines, as well as pixels formed at the intersections of the gate lines and data lines. Furthermore, it may be configured to include an array, an OLED layer on the array, an encapsulation substrate or encapsulation layer disposed on the array to cover the OLED layer, etc., the array including thin-film transistors as components for selectively applying voltage to each pixel.

[0071] The encapsulation layer can protect the thin-film transistor and organic light-emitting device (OLED) layers from external impacts and prevent moisture or oxygen from penetrating the OLED layers. Furthermore, the layers formed on the array can include inorganic light-emitting layers, such as nanoscale material layers or quantum dots.

[0072] In this disclosure, Figure 1 An exemplary organic light-emitting diode (OLED) display panel that can be integrated into a display device is shown, but as described above, embodiments of this disclosure are not limited to OLED display panels.

[0073] Figure 1 This is an illustration of a display device according to an embodiment of the present disclosure.

[0074] refer to Figure 1 The display device 100 can be applied to the central dashboard of a vehicle, or it can be otherwise fixed to the internal frame structure of the vehicle and configured to display images to the user. Although Figure 1 A rectangular display panel 150 is shown, but the shape of the display device 100 is not necessarily limited to this, but can be made into various shapes, such as square, polygonal, circular, oval or curved.

[0075] refer to Figure 1 The display device 100 is equipped with integrated display and touch functions, and the cover member 110 is attached to the front. A display panel 150 for display can be disposed on the rear surface of the cover member 110. The display device 100 can be inserted into and coupled to the vehicle's dashboard. The display panel 150 can be manufactured on a rigid substrate, but in the case of organic light-emitting devices, it can also be manufactured on a flexible substrate. The display panel 150 manufactured on a flexible substrate can deform concave or convex according to the shape of the dashboard, thereby achieving a flexible design. The cover member 110 can be a cover glass.

[0076] Figure 4 It shows that it is set Figure 1 The cross-sectional structure of the light-emitting components in the display panel 150 is shown. The substrate 111 can support various components of the display panel 150. The substrate 111 can be formed from a transparent dielectric material such as glass or plastic. When made of plastic, the substrate 111 can be a plastic film or a plastic substrate. For example, the substrate 111 can be in the form of a film, including one of polyimide-based polymers, polyester-based polymers, silicone-based polymers, acrylic-based polymers, polyolefin-based polymers, and copolymers thereof. Among these materials, polyimide is primarily used as a plastic substrate because it is suitable for high-temperature processes and is a coatable material.

[0077] A buffer layer (not shown) may be positioned on the substrate 111. The buffer layer is a functional layer that protects the thin-film transistor (TFT) from impurities, such as alkaline ions that may leak from the bottom of the substrate 111. The buffer layer may be formed of silicon oxide (SiOx), silicon nitride (SiNx), or multiple layers thereof.

[0078] Thin-film transistor 119 can be disposed on buffer layer and / or substrate 111. Thin-film transistor 119 can be formed by sequentially arranging gate electrode 119a, gate insulating layer 112, semiconductor layer 119b, interlayer insulating film 114, source electrode 119c, and drain electrode 119d. One or more thin-film transistors 119 may be arranged for multiple sub-pixels disposed in the effective area of ​​display panel 150.

[0079] Despite Figure 4 The thin-film transistor 119 is shown as a bottom-gate type, but it is not limited to this and can also be provided as a top-gate type, wherein the order of the semiconductor layer 119b and the gate electrode 119a is reversed.

[0080] Semiconductor layer 119b can be disposed at a specific portion on substrate 111 or buffer layer. Semiconductor layer 119b can be made of polycrystalline silicon (p-Si), and in this case, regions of semiconductor layer 119b can be doped with impurities to form electrode layers. Semiconductor layer 119b can also be made of amorphous silicon (a-Si) and various organic semiconductor materials (e.g., pentene). Furthermore, semiconductor layer 119b can also be made of oxide materials. Gate insulating layer 112 can be formed of inorganic dielectric materials such as silicon oxide (SiOx) or silicon nitride (SiNx) and organic dielectric materials. Gate electrode 119a can be formed of various conductive materials, such as magnesium (Mg), aluminum (Al), nickel (Ni), chromium (Cr), molybdenum (Mo), tungsten (W), gold (Au), or alloys thereof.

[0081] The first interlayer insulating film 114 can be formed of an inorganic or organic dielectric material such as silicon oxide (SiOx) or silicon nitride (SiNx). The first interlayer insulating film 114 can be selectively removed to form contact holes that expose the source and drain regions.

[0082] The source electrode 119c and the drain electrode 119d are formed as single-layer or multi-layer electrode materials on the first interlayer insulating film 114.

[0083] An inorganic protective film 116 and a planarization layer 118 can be positioned on the thin-film transistor 119 to cover the source electrode 119c and the drain electrode 119d. The inorganic protective film 116 and the planarization layer 118 protect the thin-film transistor 119 and make its upper surface planar.

[0084] The inorganic protective film 116 can be formed from inorganic dielectric films such as silicon nitride (SiNx) and silicon oxide (SiOx), while the planarization layer 118 can be made from organic dielectric films such as phenylcyclobutene (BCB) or acrylic acid (Acryl). The inorganic protective film 116 and the planarization layer 118 can each be formed as a single layer, a double layer, or a multilayer structure, and in some cases, one of the two layers can be omitted.

[0085] The light-emitting component OLED connected to the thin-film transistor (TFT) 119 can be formed by sequentially arranging a first electrode 122, an organic light-emitting layer 124, and a second electrode 126. That is, the light-emitting component OLED may include a first electrode 122 connected to a drain electrode 119d through a via 156d formed in a planarization layer 118 and an inorganic protective film 116, an organic light-emitting layer 124 positioned on the first electrode 122, and a second electrode 126 positioned on the organic light-emitting layer 124.

[0086] When the display panel 150 is a top-emitting type where emission occurs upwards via the second electrode 126, the first electrode 122 may include an opaque conductive material with high reflectivity. Examples of reflective conductive materials in this case may include silver (Ag), aluminum (Al), gold (Au), molybdenum (Mo), tungsten (W), chromium (Cr), or alloys thereof.

[0087] A dam 128 is formed in a region excluding the light-emitting region and extends upward to the light-emitting region. Therefore, the dam 128 has a dam hole exposing the first electrode 122 corresponding to the light-emitting region. The dam 128 can be made of an inorganic dielectric material such as silicon nitride (SiNx) or silicon oxide (SiOx), or an organic dielectric material such as BCB, acrylic resin, or imide resin.

[0088] An organic light-emitting layer 124 is positioned on a first electrode 122 exposed by a dam 128. The organic light-emitting layer 124 may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. Furthermore, the organic light-emitting layer 124 may include a single light-emitting layer structure that emits a single light within a single stack, or the organic light-emitting layer 124 may include a multi-stack structure comprising multiple stacks, each of the multiple stacks including a single light-emitting layer of the same color. In this case, adjacent sub-pixels can be arranged to emit light of different colors to display various colors. For example, sub-pixels with red, green, and blue emitting layers can be arranged in a row, or arranged spaced apart from each other in a triangular shape or layered structure, such that some sub-pixels of predetermined colors are arranged in parallel, and other sub-pixels are arranged diagonally opposite each other.

[0089] In some cases, white subpixels can also be added to this arrangement. Furthermore, the organic light-emitting layer 124 can be configured to represent white by stacking multiple stacked structures comprising emitting layers that emit different colors of light. When representing white using a stacked structure, a separate color filter can be added to each subpixel.

[0090] The second electrode 126 is positioned on the organic light-emitting layer 124. When the display panel 150 adopts a top-emitting structure, the second electrode 126 may be formed of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO) or a semi-transparent metal or metal alloy such as MgAg, so as to emit the light generated in the organic light-emitting layer 124 upward through the second electrode 126.

[0091] The second electrode 126 can be arranged to reach a capping layer at the top of the second electrode 126. This capping layer can protect the OLED and help extract the light emitted through the second electrode 126 by using a material with a high refractive index.

[0092] An encapsulation layer 156 can be disposed on the light-emitting component OLED. The encapsulation layer 156 prevents oxygen and moisture from penetrating from the outside, thus preventing oxidation of the light-emitting material and electrode materials. Exposure of the OLED to moisture or oxygen can cause pixel shrinkage or the formation of black spots, thereby reducing the light-emitting area. The encapsulation layer 156 is formed by alternately stacking inorganic layers 156a and 156c made of glass, metal, alumina (AlOx), or silicon (Si) materials with an organic layer 156b. The organic layer 156b acts as a buffer to release the oxidizing agent caused by the display panel (…). Figure 1 The bending of the "100" in the image causes stress between layers and enhances flatness. The organic layer 156b can be made of an organic dielectric material, such as acrylic resin, epoxy resin, polyimide, polyethylene, or silicon carbide (SiOC). Here, the first inorganic layer 156a and the second inorganic layer 156c are used to block the penetration of moisture or oxygen, while the organic layer 156b flattens the surface of the first inorganic layer 156a. The encapsulation layer 156 includes several thin film layers, which, compared to a single layer, increases the length and complexity of the path that moisture and oxygen must take, making it difficult for moisture and oxygen to penetrate into the light-emitting component OLED.

[0093] A protective layer (not shown) may be further formed between the light-emitting OLED and the encapsulation layer 156 to protect the encapsulation layer 156 from being peeled off or having its uniformity affected during the manufacturing process of the encapsulation layer 156.

[0094] refer to Figure 4The polarizing layer 154 can be disposed on the encapsulation layer 156. The polarizing layer 154 can minimize the impact of light entering the display panel 150 from an external light source on the semiconductor layer 119b or the organic light-emitting layer 124.

[0095] refer to Figure 4 The touch sensing layer 155 can be disposed on the polarizing layer 154. The touch sensing layer 155 can be configured to have a first touch electrode 155a and a second touch electrode 155c that intersect each other, allowing one electrode to receive an applied voltage signal and the other electrode to sense the voltage signal. The patterns of the first touch electrode 155a and the second touch electrode 155c can be designed as polygonal or circular shapes on the touch insulating layer 155b, and arranged at a distance from each other.

[0096] The cover member 110 can be disposed on the touch-sensitive layer 155. The touch-sensitive layer 155 and the cover member 110 can be bonded together by an adhesive layer therebetween.

[0097] refer to Figures 1 to 6 The display device 100 according to the embodiments of the present disclosure may include a display panel 150, a cover member 110, a fixing frame 140, a core board 160 and a stress dispersion unit 200.

[0098] refer to Figure 1 The display panel 150 according to an embodiment of the present disclosure can be applied to the central dashboard of a vehicle and is arranged in a segmented manner to display the required information. Reference is made to the following... Figure 4 The described display panel 150.

[0099] The cover member 110 can be arranged on the front of the display panel 150 and can be divided into an active area AA and an inactive area NA. The active area AA can correspond to the position of the display panel 150, while the inactive area NA can refer to the area outside the active area AA and / or the area surrounding the active area AA that is not configured to display an image.

[0100] refer to Figure 2 The core plate 160 can be arranged on the back of the cover member 110 and the fixing frame 140, and can have connecting blocks 163 formed thereon. As will be further described below, the connecting blocks 163 are associated with corresponding fastening members 180 of the fixing frame 140. In this case, the core plate 160 may include a plurality of connecting blocks 163 located at positions corresponding to the inactive area NA of the cover member 110 on the core plate 160.

[0101] refer to Figure 3According to embodiments of the present disclosure, the display device 100 may include a cover member 110 and a display panel 150. The cover member 110 is shaped to correspond to the shape of a vehicle's central dashboard and is positioned at the foremost side. The display panel 150 is arranged in a segmented manner on the rear surface of the cover member 110. This means that the display panel 150 can be divided or partitioned into several independent and distinct display panel portions that collectively define the display panel 150. Figure 3 In the non-limiting example provided, the display panel 150 includes three distinct individual segments 150a throughout the display panel 150, each having a selected shape and configuration, and each capable of displaying different information to the vehicle user or driver. The display panel 150 may be selected to include more or fewer display panel segments 150a, whose shapes and configurations differ from those illustrated.

[0102] To assemble the fixing frame 140 and the cover member 110, an adhesive member 130 can be placed between the fixing frame 140 and the cover member 110. In this case, the adhesive member 130 may have one or more open areas (or openings) that match the display panel segment 150a of the display panel 150. Furthermore, the adhesive member 130 may have open non-adhesive areas 131 formed in its region E, which corresponds to the position of the connecting block 163, shown as being located within region C of the core plate 160 and associated with the fastening member 180 described with respect to the fixing frame 140. Multiple positions E of the adhesive member 130 corresponding to the connecting block 163 may be provided on the adhesive member 130. This means that the adhesive member 130 may include a selected number of open non-adhesive areas 131 (shown as being located within region E) that correspond to the connecting block 163 of the core plate 160 and are associated with the fastening member of the fixing frame 140.

[0103] The fixing frame 140 can be attached to the rear surface of the cover member 110 via the adhesive member 130, and can be formed to have an open area that matches the position of the display panel 150. More specifically, it can include an opening 141 corresponding to the display panel segment 150a of the display panel 150. Furthermore, the fixing frame 140 can be provided with a fastening member 180 in its region D, which matches the position of the connecting block 163 of the core board 160 and the open non-adhesive region 131. Multiple fastening members 180 in region D of the fixing frame 140 can be provided on the fixing frame 140. This means that the number and position of the fastening members 180 of the fixing frame 140 can correspond to the number and position of the connecting block 163 of the core board 160 and the number and position of the open non-adhesive region 131 of the adhesive member 130.

[0104] Although not shown in the figure, the source printed circuit board and the control printed circuit board can be placed in the open area (i.e., opening 132) of the adhesive member 130 and the fixing frame 140 and connected to the display panel 150 to allow control of the display panel 150.

[0105] The core plate 160 can be arranged on the rear surface of the fixed frame 140, and the connecting block 163 can be arranged on the core plate 160 at position C corresponding to the open non-adhesive region 131 of the fastening member 180 and the adhesive member 130 of the fixed frame 140 (i.e., in region C). Position C corresponding to the fastening member 180 and the non-adhesive region 131 can be provided as a plurality on the fixed frame 140.

[0106] Accordingly, the connecting block 163 of the core plate 160 and the fastening member 180 of the fixing frame 140 can be connected by fasteners, such as screws or bolts in a non-limiting embodiment.

[0107] Here, the connecting block 163, the fastening member 180, and the non-adhesive area 131 can each be arranged in multiple positions corresponding to the ineffective area NA of the cover member 110. This is to prevent any impact on the information display of the display panel 150, even if stress is generated on the cover member 110 due to the force exerted on the fixing frame 140 by the fasteners of the connecting block 163 of the connecting core plate 160 and the fasteners of the fastening member 180 of the fixing frame 140.

[0108] at the same time, Figures 5 to 7A The structure of the stress dispersion unit 200 and the core plate 160 according to the first embodiment is shown. Specifically, Figure 5 The region D of the fixed frame 140 is shown, which includes the fastening member 180 associated with the stress dispersion unit 200. Figure 6 It is a cross-sectional view of the combination of fastening member 180 and stress dispersion unit 200. Figure 7A This is a side cross-sectional view of the combination of fastening member 180 and stress dispersion unit 200, which shows the stress distribution in the combination.

[0109] refer to Figure 5 and Figure 6The stress-dispersing unit 200 is placed on the fastening member 180 of the fixed frame 140 to disperse the stress applied to the cover member 110 when the fastening member 180 is fastened to the connecting block 163 of the core plate 160 using screws or other fasteners. In one embodiment, the fastening member 180 includes a body 181 and a fastening hole 182 through the body 181. The fastening member 180 may be integrally formed with the stress-dispersing unit 200 as a single integral structure. Alternatively, the stress-dispersing unit 200 may be a separate component that receives the body 181 of the fastening member 180 during assembly of the display device 100. Unless otherwise stated, the following description assumes that the fastening member 180 and the stress-dispersing unit 200 are a single integral structure.

[0110] The stress dispersion unit 200 may include a support member 210, an expansion member 230, and a stress-free space 235.

[0111] The expansion member 230 may be disposed below the body 181 of the fastening member 180 and connected to the body 181 of the fastening member 180, and has a shape that expands outward from the body 181 of the fastening member 180. In embodiments of this disclosure, the expansion member 230 has a cylindrical shape, but is not necessarily limited thereto.

[0112] The expansion member 230 may include an upper flange 231 and a side flange 232, which may be the top wall and side wall of the expansion member 230, respectively.

[0113] The upper flange 231 can be connected to the lower portion of the fastening member 180 and has a shape that expands outward in the radial direction from the lower portion of the fastening member 180. The side flange 232 can be connected between the lower portion of the upper flange 231 and the fixing frame 140.

[0114] like Figure 5 As shown, support members 210 (which may include multiple support members 210) are disposed on the body 181 of the fastener 180 and the upper flange 231 of the expansion member 230 of the stress dispersion unit 230. The support members 210 may be implemented as a brace extending from the sidewall of the body 181 of the fastener 180 to the expansion member 230 of the stress dispersion unit 200. In one embodiment, each support member 210 is connected to the body 181 and extends over a significant portion of the height of the body 181. Figure 5As shown, the support members 210 are preferably arranged radially spaced apart from each other around the body 181 of the fastening member 180. This radial spacing (pitch) can be equidistant, but is not mandatory; the support members 210 can typically have a selected pitch. Each support member 210 can be a solid, continuous material, generally quadrilateral, with its inner side connected to the body 181 of the fastening member 180, its bottom side connected to the upper flange 231 of the expansion member 230, and its two outer sides not connected to the body 181 and / or the expansion member 230. The outer sides may define at least one rounded outer corner.

[0115] Furthermore, the width of the support member 210 relative to the body 181 of the fastening member 180 can be increased in height. In other words, the width of the support member 210 relative to the body 181 at the junction with the upper flange 231 of the expansion member 230 (i.e., at the bottom of the support member 210) is greater than that of the support member 210 along the... Figure 5 The width at the top of the orientation. The configuration of each support member 210 can be the same or different. For example, in Figure 5 In this embodiment, support member 210 includes a first support member 201a and a second support member 201b, which are arranged alternately in the radial direction around body 181. The width of the first support member 201a relative to body 181 (i.e., the width approximates the width of the upper flange 231) is typically greater than the width of the second support member 201b relative to body 181. The first support member 201a may correspond to a location of concentrated stress, and the increased width helps to distribute higher stress over a wider area, thereby reducing the stress distributed to expansion member 230. Alternatively, it may not be necessary to include each support member 210 with a width approximate to the width of the upper flange 231 of expansion member 230 to achieve the advantages described herein; in this case, a smaller width second support member 201b is provided to reduce manufacturing costs and materials.

[0116] It should be understood that the aforementioned features, shape, spacing, and other characteristics of the support member 210 can be selected based on various design factors. For example, the support member 210 may have a different height and width than shown in the figure, may have different spacing, may have different overall shapes, and / or may have different arrangements relative to the body 181 and the upper flange 231, etc. Many other configurations of the support member 210 are also considered herein. Therefore, this disclosure is not limited to... Figure 5 The supporting member 210 shown.

[0117] refer to Figure 6The stress-free space 235 can be formed inside the expansion member 230 and connected to the fastening hole 182 formed in the fastening member 180. In other words, the expansion member 230 is generally hollow, and the stress-free space 235 is a cavity or chamber defined by the upper flange 231 and the side flange 232 of the expansion member 230. The inner surface of the fastening hole 182 may be threaded. The fastening hole 182 can receive a screw pin 170 with threads 170a machined on its outer surface to connect the fastening member 180, the stress-dispersing unit 200, and the fixing frame 140 together.

[0118] The support member 210 can be attached to the outer surface of the fastening member 180 and is disposed on the top of the upper flange 231. (See reference) Figure 5 The support members 210 can be arranged in multiple ways along the outer periphery of the fastening member 180 in the longitudinal direction.

[0119] The connecting block 163 can protrude upward from the core plate 160 and surround the upper portion of the body 181 of the fastening member 180. The connecting block 163 may have a connecting hole 163a formed therein, through which a screw pin 170 can pass and be secured using a threaded fastening method, thereby connecting the core plate 160 and the fixing frame 140. Figure 6 As shown, the connecting block 163 is generally hollow, and the fastening member 180 and the stress dispersing unit 200 are generally received in the cavity of the connecting block 163, such that the respective fastening holes are aligned to receive the screw pins 170.

[0120] refer to Figure 7A When the head of the screw pin 170 is placed in the connecting hole 163a, rotating the screw pin 170 applies a force that pulls the fastening member 180 along the direction of the screw pin 170. Assuming the tension applied to the fastening member 180 by the screw pin 170 is the initial stress A0, the initial stress applied to the fastening member 180 is radially dispersed by the stress dispersion unit 200. The stress weakens the strength of the initial stress A0 through the radial dispersion by the stress dispersion unit 200.

[0121] In other words, the initial stress A0 is distributed into 1 / n according to the number n of support members 210 arranged along the outer periphery of the fastening member 180, and is transmitted along the direction of the expansion member 230. Assuming the stress reduced to 1 / n is the primary stress A1, the primary stress A1 is distributed by the multiple support members 210, and is transmitted as shown in the diagram. Figure 7A The arrow associated with “A1” in the diagram travels along the direction of the expansion member 230.

[0122] Furthermore, although the initial stress A0 is concentrated in the central portion of the assembly, the primary stress A1 is dispersed by the support member 210 and propagates over a larger area. This effect is primarily due to the distribution of stress concentration in both size and direction by the support member 210. Stress is typically defined by the force applied over a given area. Therefore, by expanding the distribution area of ​​the initial stress A0 by the support member 210, and assuming the initial force or initial stress A0 is constant, the resulting primary stress A1 is smaller, and likely much smaller than the initial stress A0. In a non-limiting example, if the width (w) of the support member 210 is the same as the width of the pin 170, the resulting width (and area) of the combination of the support member 210 and the pin 170 is 2w. Compared to the pin 170 alone, applying a constant force or initial stress A0 from the pin 170 over twice the area results in a 50% reduction in stress. In some embodiments, since the support member 210 may be wider than the pin 170, the stress difference between A0 and A1 may be correspondingly greater than 50%.

[0123] The expansion member 230 is cylindrically connected to the lower portion of the support member 210, forming a stress-free space 235 in the central portion. Therefore, the primary stress A1, weakened to 1 / n, transmitted from the support member 210, is not transmitted to the central portion of the expansion member 230 forming the stress-free space 235. Consequently, the further weakened stress is transmitted radially along the direction of the expansion member 230 and applied to the fixing frame 140. It should be noted that the further weakened stress is distributed to the fixing frame 140 in the area outside the location of the pin 170. In other words, due to the design of the stress-dispersing unit 200 described above, no stress is distributed to the fixing frame 140 and the cover glass 110 at the location of the pin 170 (i.e., via the adhesive 130). Instead, the weakened stress is distributed over a large area around the location of the pin 170. This arrangement is significantly different from the conventional fastening arrangement shown in and described with reference to FIG. 12.

[0124] As stress passes through expansion member 230, primary stress A1 gradually diffuses into a wider area (i.e., the area through and around expansion member 230) and is transmitted to fixed frame 140 in a weakened state. Assuming the weakened stress is secondary stress A2, secondary stress A2 is even more widely dispersed than primary stress A1, as indicated by the arrow associated with "A2".

[0125] In other words, the initial stress A0 concentrated at the center of the fastener 180 is dispersed by the stress dispersion unit 200, resulting in a reduction in stress concentration over a wider area of ​​the stress dispersion unit 200 and a decrease in the magnitude of stress in the radial direction. This can alleviate the problem of localized deformation caused by stress concentration in a specific area of ​​the cover member 110 at the location of the fastener described with reference to FIG. 12 and further illustrated and described in the comparative examples below.

[0126] Specifically, since a stress-free space 235 is formed at the center of the expansion member 230, the initial stress A0 is not transmitted to the central portion associated with the pin, thereby reducing the deformation of the cover member 110 caused by stress concentration at the connection between the core plate 160 and the fixing frame 140 and / or at the location of the fasteners.

[0127] at the same time, Figure 7B The structure of the stress dispersion unit 200 and the core plate 160 according to the second embodiment is shown.

[0128] refer to Figure 7B The stress dispersion unit 200 is provided on the fastening member 180 and can disperse the stress applied to the cover member 110 when the fastening member 180 and the connecting block 163 are fixed by screws.

[0129] The stress dispersion unit 200 may include a support member 210, an expansion member 230, a protrusion 250, and a stress-free space 235.

[0130] The expansion member 230 may be disposed below the fastening member 180 and has a shape that expands outward from the fastening member 180. In embodiments of this disclosure, the expansion member 230 may have a cylindrical shape, but is not necessarily limited thereto.

[0131] The expansion member 230 may include an upper flange 231 and a side flange 232.

[0132] The upper flange 231 can be connected to the lower portion of the fastening member 180 and has a shape that expands outward from the fastening member 180 in the radial direction. The side flange 232 can be connected between the lower portion of the upper flange 231 and the fixing frame 140.

[0133] A stress-free space 235 may be formed inside the expansion member 230 and connected to a fastening hole 182 formed in the fastening member 180. The inner surface of the fastening hole 182 may be threaded. The fastening hole 182 may be secured by screwing in a screw pin 170 whose outer surface is threaded 170a.

[0134] Support members 210 can be connected to the outer surface of fastening member 180 and are disposed on the top of upper flange 231. Multiple support members 210 can be arranged along the outer circle of fastening member 180 in the longitudinal direction of fastening member 180.

[0135] Figure 7B The second embodiment and Figures 5 to 7AThe difference in the first embodiment is that the protrusion 250 is further included in the stress-dispersing unit 200. The protrusion 250 may be arranged to project outwardly from the side flange 232 in a radial direction and may extend further from the body 181 of the fastening member 180 than the support member 210. The protrusion 250 may be generally disc-shaped.

[0136] In this configuration, the connecting block 163 can protrude upward from the core plate 160 and form a shape surrounding the upper portion of the fastening member 180. The connecting block 163 may include a connecting hole 163a through which a screw pin 170 can pass and be secured to a fastening hole 182 using a threaded fastening method, thereby connecting the core plate 160 and the fixing frame 140.

[0137] Figure 7B The second embodiment and Figures 5 to 7A The first embodiment differs in that the core plate 160 also includes a protrusion 167. The protrusion 167 may be connected to the lower portion of the connecting block 163, protruding along the direction of the side flange 232, and positioned below the protrusion 250. The protrusion 167 may generally have a shape and arrangement corresponding to the protrusion 250 in a nested or intersecting arrangement.

[0138] like Figure 7B As shown, when the head of the screw pin 170 is placed in the connecting hole 163a, rotating the screw pin 170 applies a force that pulls the fastening member 180 along the direction of the screw pin 170. Assuming the tension applied to the fastening member 180 by the screw pin 170 is an initial stress A0, the initial stress applied to the fastening member 180 is radially dispersed by the stress dispersion unit 200, thereby weakening the strength.

[0139] In other words, the initial stress A0 is distributed into 1 / n according to the number n of the support members 210 arranged along the outer periphery of the fastening member 180, and is transmitted along the direction of the expansion member 230. Assuming the stress reduced to 1 / n is the primary stress A1, the primary stress A1 is distributed by the multiple support members 210 and is transmitted along the direction of the expansion member 230 as indicated by the arrow.

[0140] Furthermore, although the initial stress A0 is concentrated in the central portion, the primary stress A1 is dispersed by the support member 210 and propagates over a wider area. This effect is primarily due to the distribution of stress concentration in both magnitude and direction by the support member 210.

[0141] The expansion member 230 is cylindrically connected to the lower portion of the support member 210, forming a stress-free space 235 in the central portion. Therefore, the primary stress A1, which is weakened to 1 / n and transmitted from the support member 210, is not transmitted to the central portion of the expansion member 230 that forms the stress-free space 235, but is instead transmitted radially along the direction of the expansion member 230 and applied to the fixed frame 140.

[0142] As stress passes through expansion member 230, primary stress A1 gradually diffuses and is transmitted to fixed frame 140 in a weakened state. Assuming the weakened stress is secondary stress A2, secondary stress A2 is even more widely dispersed than primary stress A1, as indicated by the arrow.

[0143] In the second embodiment, the initial stress A0 can also be dispersed by the protrusion 250. The primary stress A1 is also dispersed by the protrusion 250, which is connected outwardly along the radial direction of the side flange 232. That is, the primary stress A1 is dispersed by both the protrusion 250 and the expansion member 230. The protrusion 250 can also be implemented as a ring or disc extending outwardly from the body 181 of the fastening member 180, further expanding the stress distribution area, thereby improving the distribution area compared to the concept described above. Figures 5 to 7A The embodiments further reduce stress.

[0144] Secondary stress A2 is dispersed by expansion member 230, while tertiary stress A3 is dispersed by protrusion 250. In this case, since tertiary stress A3 is excluded, the tensile force of secondary stress A2 in the second embodiment is smaller than that in the first embodiment.

[0145] This can reduce the deformation of the fixed frame 140 and further reduce the deformation of the cover member 110.

[0146] In other words, the initial stress A0 concentrated at the center of the fastening member 180 is dispersed by the stress dispersion unit 200, thereby reducing stress concentration and weakening the stress magnitude in the radial direction. This can alleviate the problem of localized deformation caused by stress concentration in a specific area of ​​the cover member 110.

[0147] at the same time, Figure 7C The structure of the stress dispersion unit 200 and the core plate 160 according to the third embodiment is shown.

[0148] Figure 7C The third embodiment and Figures 5 to 7A The difference in the first embodiment is that the upper flange 231 is... Figure 5 The expansion member 230 in Figure 7 expands further outward in the radial direction relative to the body 181 of the fastening member 180.

[0149] In this configuration, the initial stress A0 is dispersed into primary stress A1 on the support member 210. Primary stress A1 is then transformed into secondary stress A2 on the upper flange 231 and further diffuses and disperses outward along the radial direction. Subsequently, secondary stress A2 is transmitted along the side flange 232 to the fixed frame 140, becoming tertiary stress A3.

[0150] Although the difference in tensile force between secondary stress A2 and tertiary stress A3 may not be significant, it is expected that... Figures 5 to 7A Compared to the first embodiment, stress concentration is further reduced because stress dispersion occurs over a wider radial range (i.e., a larger area).

[0151] In this case, the core plate 160 may further include an expansion block 165 surrounding an expansion member 230 that extends outward in a radial direction.

[0152] The expansion block 165 can be connected to the lower portion of the connecting block 163 and is configured to surround the upper flange 231 and the side flange 232.

[0153] at the same time, Figures 8A to 8D Various shapes of the expansion member 230 of the stress dispersion unit 200 according to embodiments of the present disclosure are shown. Meanwhile, Figures 9A to 9D Various shapes of the portion of the adhesive member 130 corresponding to the expansion member 230 according to embodiments of the present disclosure are shown.

[0154] like Figure 8A As shown, the expansion member 230 can have a circular outer periphery, and the interior of the stress-free space 235 can have a triangular shape. Figure 9A As shown, the non-adhesive region 131 is formed by cutting away the adhesive member 130 from the adhesive member. Figure 8A The stress-free space 235 is formed to correspond to the shape 139 shown. This is because the stress-free space 235 is open, eliminating the need for adhesion between the cover member 110 and the fixing frame 140 therein.

[0155] based on Figure 7A In the first embodiment shown, the initial stress A0 is dispersed and weakened into a primary stress A1 on the support member 210, and the primary stress A1 is further dispersed outward in the radial direction into a secondary stress A2 on the expansion member 230 and applied to the fixed frame 140.

[0156] When the inner side 233 forms a triangular shape, the secondary stress A2 can be distributed across the three compartments, which is beneficial for its dispersion.

[0157] like Figure 8BAs shown, the expansion member 230 may have a circular outer perimeter, and the interior of the stress-free space 235 may have a square shape.

[0158] like Figure 9B As shown, the non-adhesive region 131 is formed by cutting away the adhesive component 130 from the adhesive component. Figure 8B The stress-free space 235 is formed to correspond to the shape 139 shown. This is because the stress-free space 235 is open, eliminating the need for adhesion between the cover member 110 and the fixing frame 140 therein.

[0159] based on Figure 7A In the first embodiment shown, the initial stress A0 is dispersed and weakened into a primary stress A1 on the support member 210, and the primary stress A1 is further dispersed radially outward into a secondary stress A2 on the expansion member 230 and applied to the fixed frame 140.

[0160] When the inner side 233 forms a square shape, the secondary stress A2 can be distributed across the four compartments, which is beneficial for its dispersion.

[0161] like Figure 8C As shown, the expansion member 230 may have a circular outer periphery, and the interior of the stress-free space 235 may have an elliptical shape.

[0162] like Figure 9C As shown, the non-adhesive region 131 is formed by cutting away the adhesive component 130 from the adhesive component. Figure 8C The stress-free space 235 is formed to correspond to the shape shown. This is because the stress-free space 235 is open, eliminating the need for adhesion between the cover member 110 and the fixing frame 140 therein.

[0163] based on Figure 7A In the first embodiment shown, the initial stress A0 is dispersed and weakened into a primary stress A1 on the support member 210, and the primary stress A1 is further dispersed radially outward into a secondary stress A2 on the expansion member 230 and applied to the fixed frame 140.

[0164] In this case, when the inner side 233 forms an elliptical shape, the secondary stress A2 is dispersed across a pair of regions along the main axis of the elliptical shape and is applied to the fixed frame 140.

[0165] like Figure 8D As shown, the expansion member 230 may have a circular outer periphery, and the interior of the stress-free space 235 may have a circular shape.

[0166] like Figure 9D As shown, the non-adhesive region 131 is formed by cutting away the adhesive component 130 from the adhesive component. Figure 8DThe stress-free space 235 is formed to correspond to the shape 139 shown. This is because the stress-free space 235 is open, eliminating the need for adhesion between the cover member 110 and the fixing frame 140 therein.

[0167] based on Figure 7A In the first embodiment shown, the initial stress A0 is dispersed and weakened into a primary stress A1 on the support member 210, and the primary stress A1 is further dispersed outward in the radial direction into a secondary stress A2 on the expansion member 230 and applied to the fixed frame 140.

[0168] When the inner side 233 forms a circular shape, the secondary stress A2 can be evenly distributed along the radial direction.

[0169] Figure 10A The stress distribution in the cover glass 1 is shown (e.g., in Figure 12) when the conventional fixed frame 3 and core plate 4 are fastened, and Figure 10B The stress distribution in the cover glass is shown when the fixed frame and core plate are fastened according to an embodiment of the present disclosure.

[0170] Figure 11A The stress distribution formed along the edge of the conventional cover glass 1 at the fastening area is shown (e.g., in Figure 12). Figure 11B The stress distribution formed along the edge of the cover glass in the fastening area according to an embodiment of the present disclosure is shown.

[0171] As described above, in the conventional fastening structure depicted in Figure 12, when the bolt 6 is tightened into the bolt hole 5, a tensile force B1 is applied to the connecting portion 5a by the bolt 6, causing the tensile force B1 to be transmitted to the fixed frame 3 as stress B2. In this case, the cover glass 1, which is connected to the fixed frame 3 by the resin 2, experiences tensile stress along the direction of the bolt 6 at the corresponding position in the fastening area (area F), resulting in significant deformation at the connecting portion between the core plate 4 and the fixed frame 3, as well as at the position closely corresponding to the position of the bolt 6. In other words, in the conventional arrangement, all the stress generated by tightening the bolt 6 is concentrated in a very small area on the cover glass 1 that is approximately aligned with the position of the bolt 6 (i.e., area F), and can correspondingly lead to deformation.

[0172] The stress dispersion unit 200 described in the embodiment forms a stress-free space 235 at the connection between the core plate 160 and the fixed frame 140, and allows the initial stress A0 to be radially dispersed through the support member 210 and the expansion member 230, thereby reducing stress concentration and minimizing the deformation of the cover member 110.

[0173] refer to Figures 10A to 11B A comparison was made between a conventional fastening structure and a fastening structure having a stress dispersion unit 200 according to an embodiment of the present disclosure.

[0174] Figure 10A Experimental data based on the conventional fastening structure shown in Figure 12 are presented, which show that when the bolt 6 is fastened to the connection portion 5a, the resulting tensile force causes stress in the H1 region of the cover glass 1, resulting in deformation in the direction of the bolt 6.

[0175] In this case, because the stress is concentrated in the connection, the H1 region is represented by a darker shade. This indicates that the region is experiencing significant stress.

[0176] on the contrary, Figure 10B Experimental data are presented based on a fastening structure having a stress-dispersing unit 200 formed according to an embodiment of the present disclosure. As described above, when the screw pin 170 is fastened to the fastening member 180, the initial stress A0 generated by the fastening force of the screw pin 170 is radially dispersed and reduced along the support member 210 and the expansion member 230, and the presence of an open stress-free space 235 at the center of the expansion member 230 helps to reduce stress occurrence in the H2 region of the cover member 110. This is indicated by a relatively light shading and is consistent with... Figure 10A In contrast, the stress has been significantly reduced, as can be observed through color.

[0177] Figure 11A The H1 region shown corresponds to Figure 10A The H1 region shown, and referenced Figure 11A As indicated by the dark shading located locally at the fastener position, stress concentration can be observed in the connection between the bolt 6 and the fastening part 5a on the cover glass 1.

[0178] Here, multiple connecting parts are provided, and the unit of deformation for each connecting part is millimeters.

[0179] For example, the deformation in region H1 of cover glass 1 is approximately -0.304 mm.

[0180] Here, the negative sign indicates that the deformation occurs inwards along the direction towards the ground, because Figure 11A The front side of the cover glass 1 is shown.

[0181] Figure 11B The H2 region shown corresponds to Figure 10B The H2 region shown is referenced. Figure 11A It can be observed that the stress in the connection between the screw pin 170 and the fastening member 180 on the cover member 110 is relieved, as indicated by the light shading.

[0182] This can be achieved by combining the deformation value and color with... Figure 11A The corresponding deformation value and color are compared to confirm this.

[0183] By comparison Figure 11A The H1 region, represented by a relatively dark shade, and Figure 11B In the H2 region, which is represented by a relatively light shade, stress reduction can be observed.

[0184] The deformation value of the cover member 110 in region H2 is approximately -0.207 mm. This means that the deformation value is reduced by approximately 0.097 mm compared to that in region H1, which corresponds to a stress reduction of approximately 38%. Compared to conventional technologies, this stress reduction significantly reduces deformation of the cover glass and display device due to fastening operations.

[0185] Here, the negative sign indicates that the deformation occurs inwards along the direction towards the ground, because Figure 11B The front side of the cover glass 1 is shown.

[0186] In summary, when the stress-dispersing unit 200 is configured as shown in the embodiments of this disclosure in the connection portion between the core plate 160 and the fixing frame 140, stress concentration in the connection portion is dispersed and reduced compared to conventional methods. Therefore, reduced deformation of the cover member 110, particularly at the connection portion, improves the quality and aesthetics of the display device 100, ultimately leading to increased consumer satisfaction.

[0187] The above description merely illustrates a specific embodiment of the display device.

[0188] Therefore, it should be noted that those skilled in the art will readily understand that this disclosure can be replaced or modified in various forms without departing from the scope of the following claims and the intent of this disclosure.

[0189] List of reference numerals

[0190] 100: Display device

[0191] 110: Cover component; 130: Adhesive component

[0192] 140: Fixed frame; 150: Display panel

[0193] 160: Core board; 163: Connecting block

[0194] 165: Extension block 167: Protruding block

[0195] 170: Screw pin; 180: Fastening component

[0196] 200: Stress dispersion element; 210: Supporting component

[0197] 230: Expansion member; 231: Upper flange

[0198] 232: Side flange 233: Inner side

[0199] 235: Stress-free space; 250: Protrusion

Claims

1. A display device, comprising: Display panel; A cover member, the cover member being disposed on the front surface of the display panel; A fixing frame is disposed on the rear surface of the cover member and includes fastening members; A core plate, which is disposed on the rear surface of the fixed frame and includes a connecting block; Fasteners, which are connected to the connecting block and the fastening member, to connect the fixing frame to the core plate; as well as A stress distribution device, disposed on the fastening member, is configured to distribute the stress applied to the cover member due to the fasteners used to connect the fixing frame to the core plate. The stress distribution device includes: (i) an expansion member disposed at the lower portion of the fastening member and expanding outwardly from the fastening member, the expansion member including an upper flange; and (ii) A support member, which is connected to the outer surface of the fastening member and arranged on the upper part of the upper flange, for distributing stresses transmitted from the fastening member to the expansion member within the stress distribution device.

2. The display device according to claim 1, characterized in that, The stress distribution device further includes: A stress-free space is formed inside the expansion member and communicates with a fastening hole in the fastening member.

3. The display device according to claim 2, characterized in that: The upper flange is connected to the lower portion of the fastening member and expands outward in a radial direction from the fastening member; and the expansion member also includes a side flange connected to the upper flange between the lower portion of the upper flange and the fixing frame.

4. The display device according to claim 3, characterized in that, The expansion member is formed into a cylindrical shape.

5. The display device according to claim 4, characterized in that, The stress-free space is formed inside the expansion member and has a circular or polygonal shape.

6. The display device according to claim 3, characterized in that, The stress distribution device also includes radially extending protrusions that project outward from the side flange.

7. The display device according to claim 6, characterized in that, The core plate also includes a protruding block that is connected to the lower part of the connecting block, protrudes toward the side flange, and is arranged on the lower part of the protrusion.

8. The display device according to claim 3, characterized in that, The core plate also includes an extension block connected to the lower part of the connecting block and arranged around the upper flange and the side flange.

9. The display device according to claim 2, characterized in that, The display device further includes an adhesive member disposed between the cover member and the fixed frame and adhesively attaching the cover member to the fixed frame.

10. The display device according to claim 9, characterized in that, The cover member includes an effective area corresponding to the display panel in position, and an ineffective area outside the effective area, and the adhesive member is disposed in the ineffective area.

11. The display device according to claim 10, characterized in that, The fastening member and the connecting block are arranged in the invalid area.

12. The display device according to claim 9, characterized in that, The adhesive component includes a non-adhesive region, which is formed by cutting out a shape corresponding to the internal shape of the stress-free space.

13. A display device, comprising: Display panel; A cover disposed on the display panel; A frame on the cover, the frame including fastening members; Fasteners configured to be received by the fastening member to attach the frame to the cover; as well as A stress distribution device on the fastening member, the width of which is greater than the width of the fastening member, is provided to distribute the stresses applied to the cover in response to the fastening of the frame to the cover via the fasteners. The stress distribution device includes: (i) an expansion member disposed at the lower portion of the fastening member and expanding outwardly from the fastening member, the expansion member including an upper flange; and (ii) At least one support member, which is connected to the outer surface of the fastening member and arranged on the upper part of the upper flange to distribute stress transmitted from the fastening member to the expansion member within the stress distribution device.

14. The display device according to claim 13, characterized in that, The frame is a fixed frame, and the display device further includes: A core plate is mounted on the fixed frame, the core plate including a connecting block aligned with the fastening member.

15. The display device according to claim 14, characterized in that, The core plate is connected to the fixed frame via fasteners inserted through the connecting block and the fastening member.

16. The display device according to claim 14, characterized in that, The stress distribution device also includes a hollow cavity inside the expansion member.

17. The display device according to claim 16, characterized in that, The hollow cavity is arranged around a position on the cover aligned with the fastener, and the hollow cavity is configured to disperse stress away from the position on the cover aligned with the fastener.

18. The display device according to claim 13, characterized in that, The upper flange is connected to the lower part of the fastening member and expands outward from the fastening member in the radial direction.

19. The display device according to claim 13, characterized in that, The at least one support member is a plurality of support struts that are radially spaced apart from each other around the fastening member.

Images