CN119559858A - Display device - Google Patents

Abstract

The disclosure provides a display device, which comprises a back plate, a light source, a reflecting sheet, a light guide plate and an elastic structure. The light source is arranged on the backboard. The reflector plate is arranged on the back plate and comprises a first part and a second part. The light guide plate has a bottom surface and a plurality of side surfaces. The elastic structure is disposed between the plurality of side surfaces and the back plate. In a cross-sectional view, the first portion is disposed between the bottom surface and the back plate, one of the plurality of side surfaces faces the light source, and another of the plurality of side surfaces faces the second portion.

Description

Display device

Technical Field

The present disclosure relates to an electronic device, and more particularly, to a display device.

Background

In the design of the current display, in order to avoid shadows caused by warpage or abnormal sounds caused by displacement during vibration, the optical films are often fixed by an adhesive material. However, even if the optical film is designed to have a very small size, it is prone to swelling and shrinkage after weatherability testing, resulting in adhesion failure or optical problems (e.g., shadowing of localized areas).

Disclosure of Invention

The present disclosure provides a display device that helps to improve adhesion failure or optical problems.

According to an embodiment of the disclosure, a display device includes a back plate, a light source, a reflective sheet, a light guide plate, and an elastic structure. The light source is arranged on the backboard. The reflector plate is arranged on the back plate and comprises a first part and a second part. The light guide plate has a bottom surface and a plurality of side surfaces. The elastic structure is disposed between the plurality of side surfaces and the back plate. In a cross-sectional view, the first portion is disposed between the bottom surface and the back plate, one of the plurality of side surfaces faces the light source, and another of the plurality of side surfaces faces the second portion.

According to another embodiment of the present disclosure, a display device includes a back plate, a light source, a light guide plate, and a frame. The light source is arranged on the backboard. The light guide plate is arranged on the backboard. The frame is arranged on the back plate and provided with a tightening part and an elastic structure. The elastic structure is arranged between the tightening part and the light guide plate. The ratio of the length L of the constriction multiplied by the width W and thickness T of the constriction is between 0.5mm ^-1 and 45mm ^-1 (i.e. 0.5mm ^-1≤L/(WⅹT)≤45mm^-1).

In order to make the above features and advantages of the present disclosure more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

FIG. 1 is a partial top view schematic illustration of a display device according to some embodiments of the present disclosure;

FIGS. 2A and 2B are schematic diagrams of a first cross-section corresponding to the line I-I 'and the line II-II' of FIG. 1, respectively;

FIG. 3 shows a schematic view of the display device of FIG. 2A after weathering tests;

FIG. 4 is a second cross-sectional view corresponding to section line I-I' of FIG. 1;

FIG. 5 is a partial top view schematic illustration of a display device according to further embodiments of the present disclosure;

FIG. 6 is a schematic cross-sectional view corresponding to section line I-I' of FIG. 5;

FIG. 7 is a partial top view schematic illustration of a display device according to further embodiments of the present disclosure;

FIGS. 8A and 8B are schematic cross-sectional views corresponding to the line III-III 'and the line IV-IV' in FIG. 7, respectively;

Fig. 9 is a schematic perspective view of region R of fig. 7;

FIG. 10 is a schematic side view of the frame, light guide plate, reflector and resilient structure of the architecture of FIG. 7;

FIG. 11 is another cross-sectional view corresponding to section line IV-IV' in FIG. 7;

fig. 12 is another side view of the frame, light guide plate, reflector and resilient structure under the architecture of fig. 7.

Detailed Description

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

Certain terms are used throughout the description and following claims to refer to particular components. Those skilled in the art will appreciate that electronic device manufacturers may refer to a component by different names. It is not intended to distinguish between components that differ in function but not name. In the following description and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to.

Directional references herein, such as "upper", "lower", "front", "rear", "left", "right", etc., are merely with reference to the figures. Thus, the directional terminology is used for purposes of illustration and is not intended to be limiting of the disclosure. In the drawings, the various figures illustrate the general features of methods, structures and/or materials used in certain embodiments. However, these drawings should not be construed as defining or limiting the scope or nature of what is covered by these embodiments. For example, the relative dimensions, thicknesses, and locations of various layers, regions, and/or structures may be reduced or exaggerated for clarity.

The description of one structure (or layer, element, substrate) being above/on another structure (or layer, element, substrate) in this disclosure may refer to two structures being adjacent and directly connected, or may refer to two structures being adjacent and not directly connected. Indirect connection refers to having at least one intervening structure (or intervening layers, intervening elements, intervening substrates, intervening spaces) between two structures, the lower surface of one structure being adjacent to or directly connected to the upper surface of the intervening structure, and the upper surface of the other structure being adjacent to or directly connected to the lower surface of the intervening structure. The intermediate structure may be a single-layer or multi-layer solid structure or a non-solid structure, and is not limited thereto. In the present disclosure, when a structure is disposed "on" another structure, it may mean that the structure is "directly" on the other structure, or that the structure is "indirectly" on the other structure, that is, at least one structure is further interposed between the structure and the other structure.

The terms "about," "equal," or "identical," "substantially," or "substantially" are generally interpreted as being within 20% of a given value or range, or as being within 10%, 5%, 3%, 2%, 1%, or 0.5% of the given value or range. Furthermore, the terms "range from a first value to a second value," and "range between a first value and a second value," mean that the range includes the first value, the second value, and other values therebetween.

The use of ordinal numbers such as "first," "second," and the like in the description and in the claims is used for modifying an element, and is not by itself intended to exclude the presence of any preceding ordinal number(s) or order(s) of a certain element or another element or order(s) of manufacture, and the use of such ordinal numbers merely serves to distinguish one element having a certain name from another element having a same name. The same words may not be used in the claims and the specification, whereby a first element in the description may be a second element in the claims.

The electrical connection or coupling described in this disclosure may refer to a direct connection or an indirect connection, in which case the terminals of the elements of the two circuits are directly connected or connected with each other by a conductor segment, and in which case the terminals of the elements of the two circuits have a switch, a diode, a capacitor, an inductor, a resistor, other suitable elements, or a combination thereof, but is not limited thereto.

In the present disclosure, the thickness, length and width may be measured by an optical microscope (Optical Microscope, OM), and the thickness or width may be measured by a cross-sectional image in an electron microscope, but not limited thereto. In addition, any two values or directions used for comparison may have some error. In addition, references in the present disclosure to the terms "equal," "identical," "substantially," or "substantially" generally represent ranges that fall within 10% of the given values or ranges. Furthermore, the terms "a given range of values from a first value to a second value," "a given range falling within a range of values from the first value to the second value," or "a given range between the first value and the second value," mean that the given range includes the first value, the second value, and other values therebetween. The angle between the first direction and the second direction may be between 80 degrees and 100 degrees if the first direction is perpendicular to the second direction, and between 0 degrees and 10 degrees if the first direction is parallel to the second direction.

Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be appreciated that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

In the present disclosure, the electronic device may include a display device, a backlight device, an antenna device, a sensing device or a stitching device, but is not limited thereto. The electronic device may be a bendable or flexible electronic device. The display device may be a non-self-luminous type display device or a self-luminous type display device. The display device may include, for example, liquid crystals (QDs), light emitting diodes (leds), fluorescence (fluorescence), phosphorescence (phosphorescence), quantum Dots (QDs), other suitable display media, or combinations of the foregoing. The Antenna arrangement may for example comprise a frequency selective surface (Frequency Selective Surface, FSS), a radio frequency Filter (RF-Filter), a polarizer (Polarizer), a resonator (Resonator), an Antenna (Antenna) or the like. The antenna may be a liquid crystal type antenna or a non-liquid crystal type antenna. The sensing device may be a sensing device for sensing capacitance, light, heat energy or ultrasonic wave, but is not limited thereto. In the present disclosure, an electronic device may include electronic components, which may include passive components and active components, such as capacitors, resistors, inductors, diodes, transistors, and the like. The diode may comprise a light emitting diode or a photodiode. The light emitting diode may include, for example, but not limited to, an Organic LIGHT EMITTING Diode (OLED), a sub-millimeter light emitting diode (mini LED), a micro LED, or a quantum dot LED. The splicing device can be, for example, a display splicing device or an antenna splicing device, but is not limited to this. It should be noted that the electronic device may be any of the above arrangements, but is not limited thereto. Furthermore, the shape of the electronic device may be rectangular, circular, polygonal, a shape with curved edges, or other suitable shape. The electronic device may have a driving system, a control system, a light source system, and other peripheral systems to support a display device, an antenna device, a wearable device (including augmented reality or virtual reality, for example), an in-vehicle device (including an automobile windshield, for example), or a mosaic device.

It is to be understood that the following exemplary embodiments may be substituted, rearranged, and mixed for the features of several different embodiments without departing from the spirit of the disclosure to accomplish other embodiments. Features of the embodiments can be mixed and matched at will without departing from the spirit of the invention or conflicting.

Fig. 1 is a partial top view schematic illustration of a display device according to some embodiments of the present disclosure. For the sake of brevity, fig. 1 schematically illustrates a light guide plate, an adhesive layer, and a reflective sheet in a display device and omits other film layers or elements in the display device. Fig. 2A and 2B are schematic cross-sectional views of the first type corresponding to the section line I-I 'and the section line II-II' in fig. 1, respectively. Fig. 3 shows a schematic view of the display device of fig. 2A after a weather resistance test.

Referring to fig. 1 to 2B, the display device 1 may include a back plate 10, a light source 11, a reflective sheet 12, a light guide plate 13, and an elastic structure 14. The light source 11 is arranged on the back plate 10. The reflective sheet 12 is disposed on the back plate 10 and includes a first portion 12-1 and a second portion 12-2. The light guide plate 13 is disposed on the reflection sheet 12 and has a bottom surface S6 and a plurality of side surfaces (including, for example, a side surface S1, a side surface S2, a side surface S3, and a side surface S4). The elastic structure 14 is disposed between the plurality of side surfaces and the back plate 10. In the cross-sectional direction (e.g., in the direction D2 of fig. 2B or in the direction D1 of fig. 2A), the first portion 12-1 is disposed between the bottom surface S6 and the back plate 10, one of the plurality of side surfaces (e.g., side surface S4) faces the light source 11, and the other of the plurality of side surfaces (e.g., side surface S1, side surface S2, or side surface S3) faces the second portion 12-2.

In detail, the back plate 10 can be used to support components, provide structural strength, or provide heat dissipation. The material of the back plate 10 may include, but is not limited to, metal, alloy, other heat conductive or high strength materials.

The light source 11 may be used to provide a light beam (not shown). In some embodiments, the light source 11 may be attached to the inner sidewall of the back plate 10 by an adhesive layer (not shown) such that the light beam provided by the light source 11 is transmitted toward the side surface S4 of the light guide plate 13.

For example, as shown in fig. 2B, the light source 11 may include a circuit board 110 and a plurality of light emitting elements 112 (one schematically shown in fig. 2B). The light emitting elements 112 are disposed on the circuit board 110 and electrically connected to the circuit board 110. The circuit board 110 includes, for example, a printed circuit board, and the plurality of light emitting elements 112 includes, for example, light emitting diodes, but is not limited thereto. The light emitting diode includes, but is not limited to, a sub-millimeter light emitting diode, a micro light emitting diode, or other suitable light emitting device, or a combination thereof. In some embodiments, the circuit board 110 may be attached to the sidewall of the back plate 10 by an adhesive layer (not shown) such that the plurality of light emitting elements 112 face the side surface S4 of the light guide plate 13.

The reflective sheet 12 can be used for reflecting the light beam transmitted away from the light guide plate 13, thereby improving the light utilization rate. The reflective sheet 12 includes, for example, a white reflective sheet, a white adhesive tape or a metal reflective sheet, but is not limited thereto.

The first portion 12-1 of the reflective sheet 12 is disposed on the back plate 10 and between the light guide plate 13 and the back plate 10, for example. The second portion 12-2 of the reflective sheet 12 is disposed, for example, on a side surface (e.g., side surface S1, side surface S2, or side surface S3) of the light guide plate 13 that does not face the light source 11. In some embodiments, as shown in fig. 2A and 2B, the first portion 12-1 and the second portion 12-2 can be separated from each other, but not limited thereto. In other embodiments, as shown in FIGS. 4, 6, 11, and 12, the first portion 12-1 and the second portion 12-2 may be in contact with each other.

In some embodiments, the display device 1 may further include an adhesive layer 15, wherein the adhesive layer 15 is disposed between the second portion 12-2 and a side surface (e.g., the side surface S1, the side surface S2, or the side surface S3), and the second portion 12-2 may be attached to the side surface by the adhesive layer 15. In some embodiments, the reflective sheet 12 may include a plurality (e.g., three) of second portions 12-2, and the display device 1 may include a plurality (e.g., three) of adhesive layers 15. The second portions 12-2 may be respectively attached to the side surfaces S1, S2 and S3 by a plurality of adhesive layers 15, but not limited thereto. The adhesive layer 15 includes, but is not limited to, foam, adhesive tape, pressure sensitive adhesive or optical adhesive.

The light guide plate 13 may be used to transmit light beams. For example, light beams (not shown) emitted by the plurality of light emitting elements 112 may enter the light guide plate 13 through the side surface S4 of the light guide plate 13 and be transmitted toward the side surface S2 by way of total internal reflection (total internal reflection, TIR). In addition to the bottom surface S6 and the plurality of side surfaces, the light guide plate 13 may have a top surface S5, wherein the bottom surface S6 is located between the top surface S5 and the first portion 12-1 of the reflective sheet 12. In some embodiments, at least one of the bottom surface S6 and the top surface S5 of the light guide plate 13 may be formed with a plurality of microstructures (not shown) or a plurality of dots (not shown). In some embodiments, the material of the light guide plate 13 may include plastic or glass, but is not limited thereto.

The elastic structure 14 is a structure that deforms (e.g., compresses or expands) when an external force is applied and returns to a previous state after the external force is released. The elastic structure 14 may achieve a compressive or expansive elastic effect by itself or by the configuration of the three-dimensional structure, and thus the material of the elastic structure 14 may not be limited. For example, although not shown, the elastic structure 14 may be made of paper, foam or plastic and have a three-dimensional configuration, or the elastic structure 14 may be composed of a spring or other elastic member, but is not limited thereto. In addition, the elastic structure 14 may be a structure integrally formed with the reflective sheet 12 or a structure additionally provided (e.g., adhered, fastened or otherwise fixed) on other components (e.g., the back plate 10 or the frame 16). As shown in FIG. 2A or FIG. 2B, the elastic structure 14 may be connected to the second portion 12-2, and the elastic structure 14 may also be connected to the first portion 12-1. For example, the elastic structure 14 may be connected between the first portion 12-1 and the second portion 12-2, and the elastic structure 14, the first portion 12-1 and the second portion 12-2 may be integrally formed, but not limited thereto.

The elastic structure 14 has a first configuration in a first state and a second configuration different from the first configuration in a second state. For example, the elastic structure 14 has a non-compressed configuration as shown in fig. 2A and 2B at normal temperature and a compressed configuration as shown in fig. 3 at high temperature. Specifically, in the weather resistance test, as shown in fig. 3, the light guide plate 13 and the reflection sheet 12 are subjected to stress and strain due to the difference in thermal expansion coefficient. The larger the thermal expansion coefficient, the larger the deformation amount. By way of illustration of the fact that the coefficient of thermal expansion of the light guide plate 13 is greater than that of the reflective sheet 12, the dimension of the light guide plate 13 (e.g., the length in the direction D1) increases more than that of the reflective sheet 12 in a high temperature environment, and the elastic structure 14 is compressed. The stress applied to the second portion 12-2 and/or the first portion 12-1 of the reflective sheet 12 is relaxed or absorbed by the elastic structure 14, which helps to maintain the flatness of the second portion 12-2 and/or the first portion 12-1, thereby improving adhesion failure (e.g., the second portion 12-2 is stressed to separate from the side surface) or improving optical problems (e.g., the second portion 12-2 is separated from the side surface to cause darkening).

In some embodiments, the length of the first portion 12-1 may be greater than the length of the light guide plate 13 in a cross-sectional direction to provide sufficient compression space for the elastic structure 14. As shown in fig. 2A, a length L12-1 of the first portion 12-1 in the direction D1 may be greater than a length L13 of the light guide plate 13 in the direction D1. As shown in fig. 2B, a length L12-1 'of the first portion 12-1 in the direction D2 may be greater than a length L13' of the light guide plate 13 in the direction D2.

The display device 1 may optionally also comprise other elements or film layers according to different requirements. For example, the display device 1 may also include a frame 16. The frame 16 may be fixed to the back plate 10 by adhesion, clamping or other fixing methods, and the elastic structure 14 may be located between the side surface (e.g., the side surface S1, the side surface S2 or the side surface S3) and the frame 16. In some embodiments, the frame 16 may be made of a light shielding material to shield the underlying components, such as the light source 11, the second portion 12-2, and the elastic structure 14, but not limited thereto.

In some embodiments, the frame 16 has a light transmissive region R16. The size of the light-transmitting region R1 is defined by the opening of the frame 16 on the light-emitting side (the side of the frame 16 remote from the reflective sheet 12). The light-transmitting region R16 and the light guide plate 13 are disposed in an overlapping manner in the direction D3, such that the light beam emitted from the top surface S5 of the light guide plate 13 can be transmitted toward the element (such as the display module 20) on the frame 16 through the light-transmitting region R16.

In some embodiments, the length of the light guide plate 13 may be greater than the opening length of the frame 16 (such as the length of the light-transmitting region R16) on the light-emitting side in the cross-sectional direction, so as to improve the uniformity of light emission or reduce the generation of peripheral dark regions. As shown in fig. 2A, a length L13 of the light guide plate 13 in the direction D1 may be greater than a length L16 of the light-transmitting region R16 in the direction D1. As shown in fig. 2B, the length L13 'of the light guide plate 13 in the direction D2 may be greater than the length L16' of the light-transmitting region R16 in the direction D2.

The display device 1 may further include a plurality of optical films to enhance the uniformity of the light or provide a concentrated brightness enhancement effect, but is not limited thereto. For example, the display device 1 may further include a diffusion sheet 17, a prism sheet 18, and a diffusion sheet 19, wherein the diffusion sheet 17, the prism sheet 18, and the diffusion sheet 19 are sequentially stacked on the top surface S5 of the light guide plate 13. However, it should be understood that the types of optical films, the number of optical films of various types, the stacking relationship between the optical films, and the like in the display device 1 may be changed according to practical needs, and are not limited thereto.

The display device 1 may further include a display module 20 and an adhesive layer 21. The display module 20 may be disposed on the frame 16 through the adhesive layer 21, and an active region (not shown; e.g., a region providing a display image) of the display module 20 may be disposed to overlap the light-transmitting region R16 of the frame 16 in the direction D3. The adhesive layer 21 includes, but is not limited to, foam, adhesive tape, pressure sensitive adhesive or optical adhesive. The display module 20 includes, but is not limited to, a display panel 200, a polarizer 202, and a polarizer 204. The display panel 200 is disposed between the polarizer 202 and the polarizer 204. For example, the display panel 200 may be a non-self-luminous display panel, such as a liquid crystal display panel, but is not limited thereto. The polarizers 202 and 204 may be absorptive polarizers, and the polarizers 202 and 204 may have absorption axes parallel or perpendicular to each other, but not limited thereto. In other embodiments, although not shown, the display module 20 may be fixed to the frame 16 by a snap fit or other fixing method, and the fixing method of the display module 20 and the frame 16 is not limited herein.

The elastic structure 14 improves the adhesion failure or the optical problem, and helps to improve the uniformity of the light beam output from the light-transmitting region R16 of the frame 16, thereby improving the display quality of the display device 1.

Fig. 4 is a second cross-sectional view corresponding to the section line I-I' in fig. 1. Referring to fig. 4, the main differences between the display device 1A and the display device 1 of fig. 2A to 3 are described below. In the display device 1A, the first portion 12-1 is adjacent to an end of the second portion 12-2 (e.g., contacts the second portion 12-2), and the elastic structure 14A includes at least one bend B. The bending part B can be formed by two line segments extending along different directions, and the turning part of the two line segments can adopt acute angles, obtuse angles, right angles, arc angles or other corner designs. The elastic structure 14A has a non-compressed configuration as shown in fig. 4 at normal temperature and forms a compressed configuration at high temperature.

Fig. 5 is a partial top view schematic of a display device according to further embodiments of the present disclosure. For the sake of brevity, fig. 5 schematically illustrates the light guide plate, the adhesive layer, the reflective sheet, and the elastic structure in the display device and omits other film layers or elements in the display device. Fig. 6 is a schematic cross-sectional view corresponding to the section line I-I' in fig. 5. Referring to fig. 5 to 6, the main differences between the display device 1B and the display device 1A of fig. 4 are described below. In the display device 1B, the first portion 12-1, the second portion 12-2 and the elastic structure 14B are independently manufactured, and both ends of the elastic structure 14B abut against the second portion 12-2 (e.g., the middle portion of the second portion 12-2) and the inner side wall of the frame 16, respectively. In other embodiments, although not shown, the second portion 12-2 may be more firmly attached to the side surface (e.g., side surface S1, side surface S2, or side surface S3) of the light guide plate 13 by increasing the number of elastic structures 14B between the side surface (e.g., side surface S1, side surface S2, or side surface S3) of the light guide plate 13 and the frame 16 or by changing the relative arrangement positions of the elastic structures 14B and the second portion 12-2. The elastic structure 14B includes at least one bending portion B'. For example, the elastic structure 14B is a spiral structure, and the bending portion B' may be an arc-shaped region of a portion of the spiral structure. The elastic structure 14B has a non-compressed configuration as shown in fig. 6 at normal temperature and forms a compressed configuration at high temperature.

Fig. 7 is a partial top view schematic diagram of a display device according to further embodiments of the present disclosure. For the sake of brevity, fig. 7 schematically illustrates the light source, the elastic structure, and the frame in the display device and omits other film layers or elements in the display device. Fig. 8A and 8B are schematic cross-sectional views corresponding to the section line III-III 'and the section line IV-IV' in fig. 7, respectively. Fig. 9 is a schematic perspective view of the region R in fig. 7.

Fig. 10 is a schematic side view of the frame, light guide plate, reflector and resilient structure of the structure of fig. 7.

Referring to fig. 7 to 8B, the display device 1C may include a back plate 10, a light source 11, a light guide plate 13, and a frame 16C. The light source 11 is arranged on the back plate 10. The light guide plate 13 is disposed on the back plate 10. The frame 16C is provided on the back plate 10. From a top view of the display device 1C, as shown in FIG. 7, the frame 16C is provided with an elastic structure 14C at a width W of 0.3mm to 1mm (i.e., 0.3 mm. Ltoreq.W.ltoreq.1 mm), and the elastic structure 14C contacts the light guide plate 13.

In detail, in the display device 1C, as shown in fig. 8A, the elastic structure 14C is abutted between the frame 16C and the light guide plate 13, for example, and the elastic structure 14C may be a structure integrally formed with the frame 16C, but is not limited thereto. In some embodiments, a gap G may be left between the side of the frame 16C provided with the elastic structure 14C and the back plate 10 to provide a deformation space of the frame 16C when the light guide plate 13 is deformed.

In some embodiments, as shown in fig. 7, the elastic structure 14C may be disposed on a side of the frame 16C opposite to the light source 11 and/or a side of the frame 16C adjacent to the light source 11, and a side of the frame 16C where the light source 11 is not disposed and the elastic structure 14C is not disposed may fix the light guide plate 13 through an adhesive layer (not shown), but is not limited thereto. In some embodiments, as shown in fig. 7, the number of the elastic structures 14C disposed on the same side of the frame 16C may be plural, and the distribution of the elastic structures 14C on the same side of the frame 16C may be symmetrical or uniform, so as to reduce the probability of rotation of the frame 16C due to unbalanced stress when the light guide plate 13 expands and contracts.

In some embodiments, the frame 16C may have a constriction 160 and a resilient structure 14C, and the resilient structure 14C is disposed between the constriction 160 and the light guide plate 13. The width W of the frame 16C at the pinch portion 160 is smaller than the width W of the frame 16C at other portions adjacent to the pinch portion 160. For example, the width W of the constriction 160 can be 0.3mm to 1mm (i.e., 0.3 mm. Ltoreq.W.ltoreq.1 mm). In some embodiments, the constriction 160 is located on a side of the frame 16C opposite the light source 11, but is not limited thereto. The elastic structure 14C may be disposed corresponding to the constriction 160. As shown in fig. 9, the elastic structure 14C may be connected with the constriction 160. In the present disclosure, the length L, the width W, and the thickness T of the constriction 160 may satisfy the relationship (1):

0.5mm ^-1≤L/(WⅹT)≤45mm^-1. Relational expression (1)

For example, the ratio of the length L of the constriction 160 to the product of the width W and the thickness T of the constriction 160 (i.e., L/(WxT)) may be 0.5mm^-1、5mm^-1、10mm^-1、15mm^-1、20mm^-1、25mm^-1、30mm^-1、35mm^-1、40mm^-1、45mm^-1 or any value or range of values between the foregoing values to have sufficient rigidity or structural strength. In some embodiments, the length L of the constriction 160 may be 3mm to 15mm (i.e., 3mm L15 mm), and the thickness T of the constriction 160 may be 1.2mm to 2.5mm (i.e., 1.2mm T2.5 mm), but is not limited thereto. The width W, length L, thickness T, etc. of the constriction 160 may be designed according to the need.

By providing the resilient structure 14C at a location where the width of the frame 16C is relatively small (e.g., the pinch portion 160), the width amplification of the frame 16C can be facilitated to be reduced, while the need for a narrow bezel can be met. In some embodiments, the resilient structure 14C may have a chamfer CF to facilitate assembly of the light guide plate 13 or other optical element (e.g., the reflective sheet 12C and/or other optical film). The chamfer CF may have a trapezoidal shape or other polygonal shape, and the chamfer CF may have a slope or an arc surface. The inclined surface or the cambered surface may face or be away from the display module 20 (see fig. 8A or 8B) depending on the assembly direction. In some embodiments, as shown in fig. 10, the light guide plate 13 can be fastened by the elastic structure 14C, wherein the width W14C of the elastic structure 14C is larger than the distance DT between the light guide plate 13 and the tightening portion 160, so as to reduce the probability of displacement of the light guide plate 13 due to shaking or impact of external force. In some embodiments, the frame 16C may have a hollowed-out area, an opening area or a recessed area around the elastic structure 14C to provide a deformation space of the frame 16C when the light guide plate 13 is deformed.

Referring again to fig. 8A and 8B, the display device 1C may further include a reflective sheet 12C, a diffusion sheet 17, a prism sheet 18, a diffusion sheet 19, a display module 20, and an adhesive layer 21. In some embodiments, the reflective sheet 12C is disposed on the back plate 10 and between the light guide plate 13 and the back plate 10, but not limited thereto.

Fig. 11 is another schematic cross-sectional view corresponding to the section line IV-IV' in fig. 7. Fig. 12 is another side view of the frame, light guide plate, reflector and resilient structure under the architecture of fig. 7.

Referring to fig. 11 and 12, the main differences between the display device 1D and the display device 1C of fig. 8A to 10 are described below. In the display device 1D, the reflective sheet 12 may also be located between the elastic structure 14C and the light guide plate 13 such that the elastic structure 14C indirectly contacts the light guide plate 13. Specifically, the reflective sheet 12 includes a first portion 12-1 and a second portion 12-2, wherein the second portion 12-2 is located between the elastic structure 14C and the light guide plate 13. In some embodiments, the display device 1D may further include an adhesive layer 15 (shown in fig. 11 and omitted in fig. 12), and the second portion 12-2 may be attached to the side surface S2 of the light guide plate 13 through the adhesive layer 15.

In some embodiments, as shown in fig. 12, the second portion 12-2 of the reflective sheet 12 and the light guide plate 13 can be fastened by the elastic structure 14C, wherein the width W14C of the elastic structure 14C is larger than the distance DT' between the second portion 12-2 and the tightening portion 160, for example, so as to reduce the probability of displacement of the second portion 12-2 of the reflective sheet 12 and the light guide plate 13 due to shaking or impact of external force.

In summary, in embodiments of the present disclosure, stress buffering may be provided by providing a resilient structure, thereby improving adhesion failure or optical problems.

Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the technical solutions described in the foregoing embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or replacements do not depart from the spirit of the technical solutions of the embodiments of the present disclosure.

Although embodiments and advantages thereof have been disclosed, it should be understood that those skilled in the art may make various changes, substitutions and alterations herein without departing from the spirit and scope of the present disclosure, and that the features of the embodiments may be mixed with each other and substituted for other embodiments without departing from the spirit and scope of the present disclosure. Furthermore, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, which will be readily apparent to those of ordinary skill in the art from the present disclosure, without departing from the spirit and scope of the present application, as the process, machine, manufacture, composition of matter, means, methods and steps described in the specification are to be carried out in the context of the present application as long as the substantially identical functions or results are achieved in the substantially identical manner in the embodiments described herein. Accordingly, the scope of the present application includes such processes, machines, manufacture, compositions of matter, means, methods, or steps. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present disclosure also includes combinations of the individual claims and embodiments. The scope of the present disclosure is defined by the appended claims.

Claims (10)

1. A display device, comprising:

A back plate;

A light source arranged on the back plate;

A reflection sheet disposed on the back plate and including a first portion and a second portion;

a light guide plate having a bottom surface and a plurality of side surfaces, and

An elastic structure disposed between the plurality of side surfaces and the back plate,

Wherein the first portion is disposed between the bottom surface and the back plate in a cross-sectional direction, one of the plurality of side surfaces faces the light source, and another of the plurality of side surfaces faces the second portion.

2. The display device according to claim 1, further comprising:

and an adhesive layer disposed between the second portion and another one of the plurality of side surfaces.

3. The display device of claim 1, wherein the resilient structure is coupled to the second portion.

4. A display device as claimed in claim 3, characterized in that the elastic structure is further connected to the first part.

5. The display device according to claim 1, further comprising:

And a frame, wherein in the cross-sectional direction, the length of the first portion is greater than the length of the light guide plate, and the length of the light guide plate is greater than the opening length of the frame on the light emitting side.

6. The display device of claim 1, wherein the elastic structure comprises at least one bend.

7. The display device of claim 1, wherein the elastic structure has a first configuration in a first state and a second configuration different from the first configuration in a second state.

8. A display device, comprising:

A back plate;

A light source arranged on the back plate;

A light guide plate disposed on the back plate, and

A frame disposed on the back plate and having a compact portion and an elastic structure, wherein the elastic structure is disposed between the compact portion and the light guide plate, wherein a length L, a width W, and a thickness T of the compact portion satisfy a relation (1):

0.5mm ^-1≤L/(WⅹT)≤45mm^-1. Relation (1).

9. The display device according to claim 8, further comprising:

The reflecting sheet is arranged on the back plate and positioned between the light guide plate and the back plate.

10. The display device of claim 9, wherein the reflective sheet is further positioned between the elastic structure and the light guide plate.