Display device

Abstract

The invention provides a display device which comprises a back plate, a light source, a reflector plate, a light guide plate and an elastic structure. The light source is arranged on the back plate. 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 arranged between the plurality of side surfaces and the back plate. In a cross-sectional direction, 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

Technical Field

[0001] The present disclosure relates to an electronic device, and more particularly to a display device. Background Art

[0002] In current display designs, in order to avoid shadows caused by warping or strange noises caused by displacement during vibration, optical films are often fixed with adhesive materials. However, even if the size of the optical film is designed just right, it is easy to expand and shrink after weather resistance testing, resulting in adhesive failure or optical problems (for example, shadows are generated in local areas). Summary of the invention

[0003] The present disclosure provides a display device which helps to improve adhesion failure or optical problems.

[0004] According to an embodiment of the present 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 disposed on the back plate. The reflective sheet is disposed on the back plate and includes a first portion and a second portion. 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 direction, 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.

[0005] According to another embodiment of the present disclosure, a display device includes a back panel, a light source, a light guide plate, and a frame. The light source is disposed on the back panel. The light guide plate is disposed on the back panel. The frame is disposed on the back panel and has a tightening portion and an elastic structure. The elastic structure is disposed between the tightening portion and the light guide plate. The ratio of the length L of the tightening portion to the product of the width W of the tightening portion and the thickness T is between 0.5 mm. -1 Up to 45mm -1 (That is, 0.5 mm -1 ≤L / (WⅹT)≤45mm -1 ).

[0006] In order to make the above features and advantages of the present disclosure more obvious and understandable, embodiments are given below with reference to the accompanying drawings for detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a partial top view schematic diagram of a display device according to some embodiments of the present disclosure;

[0008] Figure 2A as well as Figure 2B They are respectively Figure 1 A schematic diagram of a first cross section along section line II-I' and section line II-II';

[0009] Figure 3 Show Figure 2ASchematic diagram of a display device after a weather resistance test;

[0010] Figure 4 It corresponds to Figure 1 A second cross-sectional diagram of the middle section line I-I';

[0011] Figure 5 is a partial top view schematic diagram of a display device according to other embodiments of the present disclosure;

[0012] Figure 6 It corresponds to Figure 5 A schematic cross-sectional view of the middle section line I-I';

[0013] Figure 7 is a partial top view schematic diagram of a display device according to some other embodiments of the present disclosure;

[0014] Fig. 8A as well as Figure 8B They are respectively Figure 7 Schematic cross-sectional view of the middle section line III-III' and the section line IV-IV';

[0015] Fig. 9 yes Figure 7 A three-dimensional schematic diagram of the middle region R;

[0016] Fig.10 is Figure 7 A side view schematic diagram of a frame, a light guide plate, a reflective sheet and an elastic structure under the architecture;

[0017] Fig.11 It corresponds to Figure 7 Another schematic cross-sectional view of the median section line IV-IV';

[0018] Fig.12 is Figure 7 Another side view schematic diagram of the frame, light guide plate, reflector and elastic structure under the architecture. DETAILED DESCRIPTION

[0019] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0020] Certain words are used throughout the present disclosure and in the appended claims to refer to specific components. It should be understood by those skilled in the art that electronic device manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following description and claims, the words "including" and "comprising" are open-ended words and should therefore be interpreted as "including but not limited to..."

[0021] The directional terms mentioned herein, such as "up", "down", "front", "back", "left", "right", etc., are only with reference to the directions of the drawings. Therefore, the directional terms used are for illustration and not for limiting the present disclosure. In the drawings, each figure shows the general characteristics of the methods, structures and / or materials used in a particular embodiment. However, these drawings should not be interpreted as defining or limiting the scope or nature covered by these embodiments. For example, for clarity, the relative size, thickness and position of each film layer, region and / or structure may be reduced or enlarged.

[0022] A structure (or layer, element, substrate) described in the present disclosure is located on / above another structure (or layer, element, substrate), which may refer to the two structures being adjacent and directly connected, or it may refer to the two structures being adjacent but not directly connected. Indirect connection means that there is at least one intermediate structure (or intermediate layer, intermediate element, intermediate substrate, intermediate interval) between the two structures, the lower surface of one structure is adjacent to or directly connected to the upper surface of the intermediate structure, and the upper surface of the other structure is adjacent to or directly connected to the lower surface of the intermediate structure. The intermediate structure can be composed of a single-layer or multi-layer physical structure or a non-physical structure, without limitation. In the present disclosure, when a certain structure is disposed "on" another structure, it may refer to that the certain structure is "directly" on the other structure, or that the certain structure is "indirectly" on the other structure, that is, at least one structure is sandwiched between the certain structure and the other structure.

[0023] The terms "approximately", "equal to", "equal to" or "same", "substantially" or "approximately" are generally interpreted as within 20% of a given value or range, or within 10%, 5%, 3%, 2%, 1% or 0.5% of a given value or range. In addition, the phrases "a range is from a first value to a second value", "a range is between a first value and a second value" indicate that the range includes the first value, the second value and other values ​​therebetween.

[0024] The ordinal numbers used in the specification and claims, such as "first", "second", etc., are used to modify the elements. They do not imply or represent any previous ordinal numbers of the element (or elements), nor do they represent the order of one element and another element, or the order of the manufacturing method. The use of these ordinal numbers is only used to make the element with a certain name clearly distinguishable from another element with the same name. The claims and the specification may not use the same words. Accordingly, the first component in the specification may be the second component in the claim.

[0025] The electrical connection or coupling described in the present disclosure may refer to direct connection or indirect connection. In the case of direct connection, the endpoints of the components on the two circuits are directly connected or connected to each other by a conductor segment, and in the case of indirect connection, there is a switch, diode, capacitor, inductor, resistor, other suitable components, or a combination of the above components between the endpoints of the components on the two circuits, but it is not limited to these.

[0026] In the present disclosure, the thickness, length and width can be measured by an optical microscope (OM), and the thickness or width can be measured by a cross-sectional image in an electron microscope, but it is not limited thereto. In addition, any two values ​​or directions used for comparison may have a certain error. In addition, the terms "equal", "equal", "same", "substantially" or "substantially" mentioned in the present disclosure generally represent falling within 10% of a given value or range. In addition, the term "a given range is from a first value to a second value", "a given range falls within the range from a first value to a second value" or "a given range is between a first value and a second value" means that the given range includes the first value, the second value and other values ​​therebetween. If the first direction is perpendicular to the second direction, the angle between the first direction and the second direction may be between 80 degrees and 100 degrees; if the first direction is parallel to the second direction, the angle between the first direction and the second direction may be between 0 degrees and 10 degrees.

[0027] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art to which the present disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined in the embodiments of the present disclosure.

[0028] In the present disclosure, the electronic device may include a display device, a backlight device, an antenna device, a sensing device or a splicing 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 display device or a self-luminous display device. The display device may, for example, include liquid crystal, light-emitting diode, fluorescence, phosphor, quantum dot (QD), other suitable display media or a combination of the foregoing. The antenna device may, for example, include a frequency selective surface (FSS), a radio frequency filter, a polarizer, a resonator or an antenna, etc. The antenna may be a liquid crystal antenna or a non-liquid crystal antenna. The sensing device may be a sensing device for sensing capacitance, light, heat or ultrasound, but is not limited thereto. In the present disclosure, the electronic device may include electronic components, and the electronic components may include passive components and active components, such as capacitors, resistors, inductors, diodes, transistors, etc. The diode may include a light-emitting diode or a photodiode. The light emitting diode may include, for example, an organic light emitting diode (OLED), a sub-millimeter light emitting diode (mini LED), a micro LED or a quantum dot light emitting diode (quantum dotLED), but is not limited thereto. The splicing device may be, for example, a display splicing device or an antenna splicing device, but is not limited thereto. It should be noted that the electronic device may be any arrangement or combination of the foregoing, but is not limited thereto. In addition, the appearance of the electronic device may be rectangular, circular, polygonal, a shape with curved edges or other suitable shapes. The electronic device may have peripheral systems such as a drive system, a control system, a light source system, etc. to support a display device, an antenna device, a wearable device (for example, including augmented reality or virtual reality), a vehicle-mounted device (for example, including a car windshield) or a splicing device.

[0029] It should be noted that the following embodiments may replace, reorganize, or mix features in several different embodiments to complete other embodiments without departing from the spirit of the present disclosure. Features between embodiments may be mixed and matched as long as they do not violate the spirit of the invention or conflict with each other.

[0030] Figure 1 is a partial top view of a display device according to some embodiments of the present disclosure. For the purpose of simplicity, Figure 1 The light guide plate, the adhesive layer and the reflective sheet in the display device are schematically shown, and other film layers or elements in the display device are omitted. Figure 2A as well as Figure 2BThey are respectively Figure 1 A first cross-sectional schematic diagram of the section line II' and the section line II-II'. Figure 3 Show Figure 2A Schematic diagram of a display device after weather resistance testing.

[0031] Please refer to Figures 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 disposed 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 reflective sheet 12 and has a bottom surface S6 and a plurality of side surfaces (for example, including 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 (for example, in Figure 2B In the direction of D2 or Figure 2A In the direction D1), the first portion 12-1 is disposed between the bottom surface S6 and the back panel 10, one of the plurality of side surfaces (for example, the side surface S4) faces the light source 11, and another one of the plurality of side surfaces (for example, the side surface S1, the side surface S2 or the side surface S3) faces the second portion 12-2.

[0032] Specifically, the back plate 10 can be used to carry components, provide structural strength, or provide heat dissipation. The material of the back plate 10 may include metal, alloy, or other heat-conducting or high-strength materials, but is not limited thereto.

[0033] The light source 11 can be used to provide a light beam (not shown). In some embodiments, the light source 11 can be attached to the inner wall of the back plate 10 through an adhesive layer (not shown), so that the light beam provided by the light source 11 is transmitted toward the side surface S4 of the light guide plate 13 .

[0034] For example, if Figure 2B As shown, the light source 11 may include a circuit board 110 and a plurality of light emitting elements 112 ( Figure 2B Schematically shown is a). A plurality of light-emitting elements 112 are disposed on the circuit board 110 and electrically connected to the circuit board 110. The circuit board 110, for example, includes a printed circuit board, and the plurality of light-emitting elements 112, for example, include light-emitting diodes, but are not limited thereto. The light-emitting diodes, for example, include sub-millimeter light-emitting diodes, micro light-emitting diodes, or other suitable light-emitting elements, or a combination thereof, but are not limited thereto. In some embodiments, the circuit board 110 can be attached to the side wall of the back plate 10 through an adhesive layer (not shown) so that the plurality of light-emitting elements 112 face the side surface S4 of the light guide plate 13.

[0035] The reflective sheet 12 can be used to reflect 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.

[0036] The first portion 12-1 of the reflective sheet 12 is, for example, disposed on the back plate 10 and between the light guide plate 13 and the back plate 10. The second portion 12-2 of the reflective sheet 12 is, for example, disposed on a side surface (for example, side surface S1, side surface S2, or side surface S3) of the light guide plate 13 that does not face the light source 11. Figure 2A as well as Figure 2B As shown, the first portion 12-1 and the second portion 12-2 can be separated from each other, but the present invention is not limited thereto. Figure 4 , Figure 6 , Fig.11 as well as Fig.12 As shown, the first portion 12 - 1 and the second portion 12 - 2 may contact each other.

[0037] 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 the 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 through the adhesive layer 15. In some embodiments, the reflective sheet 12 may include a plurality of (e.g., three) second portions 12-2, and the display device 1 may include a plurality of (e.g., three) adhesive layers 15. The plurality of second portions 12-2 may be attached to the side surface S1, the side surface S2, and the side surface S3 respectively through the plurality of adhesive layers 15, but the present invention is not limited thereto. The adhesive layer 15 may include, for example, foam glue, tape, pressure-sensitive glue, or optical glue, but the present invention is not limited thereto.

[0038] The light guide plate 13 can be used to transmit light beams. For example, light beams (not shown) emitted by multiple light emitting elements 112 can 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 total internal reflection (TIR). In addition to the bottom surface S6 and multiple side surfaces, the light guide plate 13 may also 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 multiple microstructures (not shown) or multiple dots (not shown). In some embodiments, the material of the light guide plate 13 may include plastic or glass, etc., but is not limited thereto.

[0039] The elastic structure 14 is a structure that deforms (for example, compresses or relaxes) when subjected to external force and returns to its previous state after the external force is removed. The elastic structure 14 can achieve the elastic effect of compression or relaxation through its own elasticity or through the configuration of a three-dimensional structure, so the material of the elastic structure 14 is not limited. For example, although not shown, the elastic structure 14 can be made of paper, foam or plastic and have a three-dimensional structure, or the elastic structure 14 can be composed of springs or other elastic components, but is not limited to this. In addition, the elastic structure 14 can be a structure that is integrally formed with the reflective sheet 12 or a structure that is additionally provided (for example, by gluing, snapping or other fixing methods) on other elements (such as the back panel 10 or the frame 16). Figure 2A or Figure 2B As shown, the elastic structure 14 can be connected to the second portion 12-2, and the elastic structure 14 can also be connected to the first portion 12-1. For example, the elastic structure 14 can 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 can be integrally formed, but not limited thereto.

[0040] The elastic structure 14 has a first configuration in the first state and a second configuration different from the first configuration in the second state. For example, the elastic structure 14 has a first configuration in the normal temperature state. Figure 2A as well as Figure 2B The non-compressed configuration shown, and at high temperature has Figure 3 In detail, during the weathering test, Figure 3 As shown, the light guide plate 13 and the reflector 12 generate stress and deformation due to the inconsistency of thermal expansion coefficients. The larger the thermal expansion coefficient, the larger the deformation. Taking the thermal expansion coefficient of the light guide plate 13 as an example, which is greater than the thermal expansion coefficient of the reflector 12, in a high temperature environment, the increase in the size of the light guide plate 13 (for example, the length in the direction D1) is greater than the increase in the size of the reflector 12, thereby squeezing the elastic structure 14. The elastic structure 14 alleviates or absorbs the stress applied to the second part 12-2 and / or the first part 12-1 of the reflector 12, which helps to maintain the flatness of the second part 12-2 and / or the first part 12-1, thereby improving adhesion failure (for example, the second part 12-2 is separated from the side surface due to stress) or improving optical problems (for example, the second part 12-2 is separated from the side surface and a shadow is generated).

[0041] In some embodiments, in the cross-sectional direction, the length of the first portion 12-1 may be greater than the length of the light guide plate 13 to provide sufficient compression space for the elastic structure 14. Figure 2A As shown, the length L12-1 of the first portion 12-1 in the direction D1 may be greater than the length L13 of the light guide plate 13 in the direction D1. Figure 2BAs shown, the length L12 - 1 ′ of the first portion 12 - 1 in the direction D2 may be greater than the length L13 ′ of the light guide plate 13 in the direction D2 .

[0042] According to different requirements, the display device 1 may also selectively include other elements or film layers. For example, the display device 1 may also include a frame 16. The frame 16 may be fixed to the back plate 10 by gluing, snapping or other fixing methods, and the elastic structure 14 may be located between the side surface (e.g., side surface S1, side surface S2 or side surface S3) and the frame 16. In some embodiments, the frame 16 may be made of a light-shielding material to shield the elements located thereunder, such as shielding the light source 11, the second portion 12-2 and the elastic structure 14, but is not limited thereto.

[0043] In some embodiments, the frame 16 has a light-transmitting 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 away from the reflective sheet 12). The light-transmitting region R16 overlaps with the light guide plate 13 in the direction D3, so 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.

[0044] In some embodiments, in the cross-sectional direction, the length of the light guide plate 13 may be greater than the opening length of the frame 16 on the light-emitting side (such as the length of the light-transmitting area R16) to improve light-emitting uniformity or reduce the generation of peripheral dark areas. Figure 2A As shown, the length L13 of the light guide plate 13 in the direction D1 may be greater than the length L16 of the light transmission region R16 in the direction D1. Figure 2B As shown, the length L13 ′ of the light guide plate 13 in the direction D2 may be greater than the length L16 ′ of the light transmission region R16 in the direction D2 .

[0045] The display device 1 may further include a plurality of optical films to improve the uniformity of light output or provide a concentrated brightening effect, but the present invention is not limited thereto. For example, the display device 1 may further include a diffuser 17, a prism sheet 18, and a diffuser 19, wherein the diffuser 17, the prism sheet 18, and the diffuser 19 are sequentially stacked on the top surface S5 of the light guide plate 13. However, it should be understood that the type of optical films in the display device 1, the number of optical films of various shapes, and the mutual stacking relationship between the plurality of optical films may be changed according to actual needs, and are not limited thereto.

[0046] 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 via the adhesive layer 21, and the active area (not shown; for example, the area providing the display image) of the display module 20 may be disposed overlapping with the light-transmitting area R16 of the frame 16 in the direction D3. The adhesive layer 21 may include, for example, foam glue, tape, pressure-sensitive glue or optical glue, but is not limited thereto. The display module 20 may include, for example, a display panel 200, a polarizer 202 and a polarizer 204, but is not limited thereto. 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 polarizer 202 and the polarizer 204 may be absorption polarizers, and the polarizer 202 and the polarizer 204 may have absorption axes that are parallel to or perpendicular to each other, but are not limited thereto. In other embodiments, although not shown, the display module 20 may be fixed to the frame 16 by snapping or other fixing methods, and the fixing method of the display module 20 and the frame 16 is not limited herein.

[0047] Improving adhesion failure or optical problems through the elastic structure 14 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 .

[0048] Figure 4 It corresponds to Figure 1 The second section diagram along the middle section line I-I'. Please refer to Figure 4 , the display device 1A and Figures 2A to 3 The main differences of the display device 1 are described as follows. In the display device 1A, the first portion 12-1 is adjacent to the end of the second portion 12-2 (for example, in contact with the second portion 12-2), and the elastic structure 14A includes at least one bending portion B. The bending portion B may be composed of two line segments extending in different directions, and the turning point of the two line segments may be an acute angle, an obtuse angle, a right angle, an arc angle or other angle designs. The elastic structure 14A has the following characteristics at room temperature: Figure 4 The non-compressed configuration is shown, and at high temperature it forms a compressed configuration.

[0049] Figure 5 is a partial top view of a display device according to some other embodiments of the present disclosure. For the purpose of simplicity, Figure 5 The light guide plate, the adhesive layer, the reflective sheet and the elastic structure in the display device are schematically shown, and other film layers or elements in the display device are omitted. Figure 6 It corresponds to Figure 5 The cross-section diagram of the middle section line I-I'. Please refer to Figures 5 and 6 , the display device 1B and Figure 4The main differences of the display device 1A are described as follows. In the display device 1B, the first part 12-1, the second part 12-2 and the elastic structure 14B are independently manufactured, and the two ends of the elastic structure 14B respectively abut against the second part 12-2 (for example, the middle part of the second part 12-2) and the inner side wall of the frame 16. In other embodiments, although not shown, the second part 12-2 can be more firmly attached to the side surface of the light guide plate 13 (for example, the side surface S1, the side surface S2 or the side surface S3) by increasing the number of elastic structures 14B between the side surface of the light guide plate 13 (for example, the side surface S1, the side surface S2 or the side surface S3) and the frame 16 or by changing the relative setting position of the elastic structure 14B and the second part 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' can be an arc-shaped area of ​​a part of the spiral structure. The elastic structure 14B has the following properties at room temperature. Figure 6 The non-compressed configuration is shown, and at high temperature it forms a compressed configuration.

[0050] Figure 7 is a partial top view of a display device according to some other embodiments of the present disclosure. For the purpose of simplicity, Figure 7 The light source, the elastic structure and the frame in the display device are schematically shown, and other film layers or elements in the display device are omitted. Fig. 8A as well as Figure 8B They are respectively Figure 7 Schematic cross-sectional view of the section line III-III' and the section line IV-IV'. Fig. 9 yes Figure 7 Schematic diagram of the central region R.

[0051] Fig.10 is Figure 7 A side view schematic diagram of the frame, light guide plate, reflector and elastic structure under the architecture.

[0052] Please refer to Figures 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 disposed on the back plate 10. The light guide plate 13 is disposed on the back plate 10. The frame 16C is disposed on the back plate 10. From a top view of the display device 1C, as shown in FIG. Figure 7 As shown, the frame 16C is provided with an elastic structure 14C at a width W of 0.3 mm to 1 mm (ie, 0.3 mm≦W≦1 mm), and the elastic structure 14C contacts the light guide plate 13 .

[0053] Specifically, in the display device 1C, if Fig. 8AAs shown, the elastic structure 14C, for example, abuts between the frame 16C and the light guide plate 13, and the elastic structure 14C may be a structure formed integrally 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 where the elastic structure 14C is provided and the back plate 10 to provide a deformation space for the frame 16C when the light guide plate 13 is deformed.

[0054] In some embodiments, Figure 7 As shown, 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 the side of the frame 16C where the light source 11 and the elastic structure 14C are not disposed may be fixed to the light guide plate 13 by an adhesive layer (not shown), but the present invention is not limited thereto. Figure 7 As shown, there may be multiple elastic structures 14C disposed on the same side of the frame 16C, and the multiple elastic structures 14C may be symmetrically distributed or evenly distributed on the same side of the frame 16C to reduce the probability of the frame 16C rotating due to unbalanced force when the light guide plate 13 expands or contracts.

[0055] In some embodiments, the frame 16C may have a constriction portion 160 and an elastic structure 14C, and the elastic structure 14C is disposed between the constriction portion 160 and the light guide plate 13. The width W of the frame 16C at the constriction portion 160 is smaller than the width W of the frame 16C at other portions adjacent to the constriction portion 160. For example, the width W of the constriction portion 160 may be 0.3 mm to 1 mm (i.e., 0.3 mm ≤ W ≤ 1 mm). In some embodiments, the constriction portion 160 is located on a side of the frame 16C opposite to the light source 11, but is not limited thereto. The elastic structure 14C may be disposed corresponding to the constriction portion 160. Fig. 9 As shown, the elastic structure 14C can be connected to the tightening portion 160. In the present disclosure, the length L, width W and thickness T of the tightening portion 160 can satisfy the relationship (1):

[0056] 0.5mm -1 ≤L / (WⅹT)≤45mm -1 …Relationship (1)

[0057] For example, the ratio of the length L of the constricted portion 160 to the product of the width W and the thickness T of the constricted portion 160 (ie, L / (W x T)) may be 0.5 mm. -1 , 5mm -1 , 10mm -1 , 15mm -1 , 20mm -1 , 25mm -1 , 30mm -1 , 35mm -1 , 40mm-1 , 45mm -1 Or any value between the aforementioned values ​​or a numerical range consisting of any values, so as to have sufficient rigidity or structural strength. In some embodiments, the length L of the constriction portion 160 can be 3 mm to 15 mm (that is, 3 mm ≤ L ≤ 15 mm), and the thickness T of the constriction portion 160 can be 1.2 mm to 2.5 mm (that is, 1.2 mm ≤ T ≤ 2.5 mm), but not limited thereto. The width W, length L or thickness T of the constriction portion 160 can be designed according to requirements.

[0058] By providing the elastic structure 14C at a position where the width of the frame 16C is relatively small (e.g., the tightening portion 160), it is helpful to reduce the width increase of the frame 16C, so as to meet the demand for a narrow frame. In some embodiments, the elastic structure 14C may have a chamfer CF to facilitate the assembly of the light guide plate 13 or other optical elements (e.g., the reflector 12C and / or other optical films). The chamfer CF may have a trapezoidal shape or other polygonal shapes, and the chamfer CF may have an inclined surface or a curved surface. Depending on the assembly direction, the inclined surface or curved surface may face or be away from the display module 20 (see Fig. 8A or Figure 8B ). In some embodiments, Fig.10 As shown, the light guide plate 13 can be fixed by the elastic structure 14C, wherein the width W14C of the elastic structure 14C is, for example, greater 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 external force impact. In some embodiments, the frame 16C may have a hollow area, an opening area or a recessed area around the elastic structure 14C to provide a deformation space for the frame 16C when the light guide plate 13 is deformed.

[0059] Refer to Fig. 8A as well as Figure 8B The display device 1C may further include a reflective sheet 12C, a diffuser 17, a prism sheet 18, a diffuser 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 is not limited thereto.

[0060] Fig.11 It corresponds to Figure 7 Another cross-sectional schematic diagram of the median section line IV-IV'. Fig.12 is Figure 7 Another side view schematic diagram of the frame, light guide plate, reflector and elastic structure under the architecture.

[0061] Please refer to Fig.11 as well as Fig.12 , the display device 1D and FIG. 8A to FIG. 10The main differences of the display device 1C are described as follows. In the display device 1D, the reflective sheet 12 may also be located between the elastic structure 14C and the light guide plate 13, so 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 also include an adhesive layer 15 (shown in FIG. Fig.11 ,and Fig.12 The second portion 12 - 2 may be attached to the side surface S2 of the light guide plate 13 via an adhesive layer 15 .

[0062] In some embodiments, Fig.12 As shown, the light guide plate 13 and the second portion 12-2 of the reflective sheet 12 can be fixed by an elastic structure 14C, wherein the width W14C of the elastic structure 14C is, for example, greater than the distance DT' between the second portion 12-2 and the tightening portion 160, so as to reduce the probability of displacement of the light guide plate 13 and the second portion 12-2 of the reflective sheet 12 due to shaking or external force impact.

[0063] In summary, in the embodiments of the present disclosure, an elastic structure can be provided to provide stress buffering, thereby improving adhesion failure or optical problems.

[0064] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

[0065] Although the embodiments and advantages of the present disclosure have been disclosed as above, it should be understood that any person with ordinary knowledge in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure, and the features between the embodiments can be arbitrarily mixed and replaced with each other to form other new embodiments. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufacturing, material compositions, devices, methods and steps in the specific embodiments described in the specification. Any person with ordinary knowledge in the art can understand from the disclosure of the present disclosure that the processes, machines, manufacturing, material compositions, devices, methods and steps currently or in the future developed can be used according to the present disclosure as long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufacturing, material compositions, devices, methods and steps. In addition, each claim constitutes a separate embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment. The scope of protection of the present disclosure shall be determined by the attached claims.

Claims

1. A display device, characterized in that: include: Back panel; A light source is arranged on the back panel; A reflective sheet, disposed on the back plate and comprising a first part and a second part; a light guide plate having a bottom surface and a plurality of side surfaces; as well as an elastic structure, disposed between the plurality of side surfaces and the back plate, Wherein, in the cross-sectional direction, 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 one of the plurality of side surfaces faces the second portion.

2. The display device according to claim 1, characterized in that Also includes: The adhesive layer is disposed between the second portion and another one of the plurality of side surfaces.

3. The display device according to claim 1, characterized in that The elastic structure is connected to the second portion.

4. The display device according to claim 3, characterized in that: The elastic structure is also connected to the first portion.

5. The display device according to claim 1, characterized in that Also includes: 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 length of the opening of the frame on the light output side.

6. The display device according to claim 1, characterized in that: The elastic structure includes at least one bending portion.

7. The display device according to claim 1, characterized in that The resilient 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, characterized in that: include: Back panel; A light source is arranged on the back panel; A light guide plate, arranged on the back plate; as well as A frame is arranged on the back plate and has a tightening portion and an elastic structure, wherein the elastic structure is arranged between the tightening portion and the light guide plate, wherein the length L, width W and thickness T of the tightening portion satisfy the relationship (1): 0.5mm -1 ≤L / (WⅹT)≤45mm -1 …relationship (1).

9. The display device according to claim 8, characterized in that: Also includes: The reflective sheet is arranged on the back plate and located between the light guide plate and the back plate.

10. The display device according to claim 9, characterized in that: The reflective sheet is also located between the elastic structure and the light guide plate.

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