Display device

Abstract

To provide a display device in which a frame is less likely to be plastically deformed.SOLUTION: The display device includes: an optical member facing a display panel; and a frame for holding the optical member. The frame includes: a frame body; and a frame component attached to the frame body to hold an end part of the optical member together with the frame body.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a display device. [Background technology]

[0002] In recent years, display devices have been developed as disclosed in the following Patent Document 1. The display device includes an optical member that transmits light emitted by a backlight to the display panel side. As the optical member, for example, an optical sheet and a diffusion plate are used. As the display panel, for example, a liquid crystal panel is used.

[0003] In the display device described above, the optical sheet is held by a frame that is a part of the cabinet. The frame is provided along the four sides of the rectangular display panel and includes frame-shaped optical member holding grooves that receive the four ends of the rectangular optical member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-226270 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the display device disclosed in the above-mentioned Patent Document 1, the frame-shaped optical member holding groove is formed by resin molding as a part of the frame. Therefore, first, the optical member is bent in the long side direction, so that both ends of the optical member in the long side direction are inserted into the optical member holding groove. Next, the frame is bent in the short side direction, so that both ends of the optical member in the short side direction are inserted into the optical member holding groove.

[0006] According to the display device disclosed in the above Patent Document 1, which requires such a manufacturing process, there is a risk that the frame will be plastically deformed when it is bent in the short side direction. If the frame is plastically deformed, the appearance of the display device will be impaired. Furthermore, if stress caused by the plastic deformation of the frame is generated in the optical member, the optical member will not be able to exhibit the desired optical characteristics.

[0007] The present disclosure has been made in view of the above-mentioned problems. It is an object of the present disclosure to provide a display device in which the risk of plastic deformation of the frame is reduced. [Means for solving the problem]

[0008] The display device of the present disclosure comprises an optical member facing a display panel and a frame that holds the optical member, the frame including a frame main body and a frame part attached to the frame main body so as to sandwich an end of the optical member together with the frame main body. [Brief description of the drawings]

[0009] [Figure 1] 2 is a front view of an optical member and a frame that configure the display device of the first embodiment. FIG. [Diagram 2] 2 is a vertical cross-sectional view of the display device of the first embodiment, taken along line II-II of FIG. [Diagram 3] 3 is a partial cross-sectional view of an end portion of the display device of the first embodiment, and is an enlarged view of a part of FIG. 2. [Figure 4] 3A to 3C are partial perspective cross-sectional views of the display device according to the first embodiment during the manufacturing process. [Diagram 5] 1 is a partial cross-sectional view of a first modified example of the display device of the first embodiment. [Figure 6] 11 is a partial cross-sectional view of a second modified example of the display device of the first embodiment. FIG. [Figure 7] FIG. 2 is a perspective view of a frame of the display device according to the first embodiment. [Figure 8] 2 is a front view of a frame of the display device according to the first embodiment. FIG. [Figure 9]9 is a cross-sectional view of the frame of the display device according to the first embodiment, taken along line IX-IX in FIG. 8. [Figure 10] 9 is a partial perspective view of the frame of the display device according to the first embodiment, showing a portion surrounded by a dashed line X in FIG. 8. FIG. [Figure 11] 10 is a cross-sectional view of the frame of the display device according to the first embodiment, taken along line XI-IXI in FIG. 8. [Figure 12] 9 is a partial front view of the frame of the display device according to the first embodiment, which corresponds to the portion surrounded by the dashed line XII in FIG. 8. FIG. [Figure 13] 13 is a partial front view of a frame main body of the display device according to the first embodiment, showing only the frame main body corresponding to FIG. 12. FIG. [Figure 14] 3 is a front view of a frame component of the display device according to the first embodiment. FIG. [Figure 15] 4 is a bottom view of a frame component of the display device according to the first embodiment. FIG. [Figure 16] 15 is a partial front view of an end portion of a frame part of the display device according to the first embodiment, showing a portion surrounded by a dashed line XVI in FIG. 14. FIG. [Figure 17] 17 is a partial bottom view of an end portion of a frame component of the display device according to the first embodiment, illustrating a portion surrounded by a dashed line XVII in FIG. 15. FIG. [Figure 18A] 5 is a cross-sectional view showing a first step of a method for attaching an optical member to a frame in a manufacturing process of the display device according to the first embodiment. FIG. [Figure 18B] 7 is a cross-sectional view showing a second step of the method of attaching the optical member to the frame in the manufacturing process of the display device according to the first embodiment. FIG. [Figure 19] FIG. 11 is a perspective view of a frame of a display device according to a second embodiment. [Figure 20] FIG. 11 is a front view of a frame of the display device according to the second embodiment. [Figure 21] FIG. 11 is a perspective view of a frame main body of the display device according to the second embodiment. [Figure 22] FIG. 11 is a front view of a frame main body of the display device according to the second embodiment. [Figure 23] 13 is a bottom view of a frame main body of the display device according to the second embodiment. FIG. [Figure 24] FIG. 11 is a perspective view of a frame component of the display device according to the second embodiment. [Diagram 25] 13 is a front view of a frame component of the display device according to the second embodiment. FIG. [Figure 26] 13 is a bottom view of a frame component of the display device according to the second embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a display device according to an embodiment of the present disclosure will be described with reference to the drawings. In the drawings, the same or equivalent elements are designated by the same reference numerals, and redundant description will not be repeated.

[0011] (Embodiment 1) The display device 10 of the first embodiment will be described with reference to Figs. 1 to 18. In each drawing, the display device 10 has a left-right symmetrical shape and a top-bottom symmetrical shape. However, the display device 10 is not limited to having a left-right symmetrical shape and is not limited to having a top-bottom symmetrical shape.

[0012] In this embodiment, the display device 10 is a television receiver. However, the display device 10 may be a display device that is a part of a desktop or notebook personal computer.

[0013] Fig. 1 is a front view of an optical member 2 and a frame 3 constituting a display device 10 of the present embodiment. Fig. 2 is a transverse cross-sectional view of the display device 10 of the present embodiment, taken along line II-II in Fig. 1. Fig. 3 is a partial cross-sectional view of an end portion of the display device 10 of the present embodiment, and is an enlarged view of a portion of Fig. 2. Fig. 4 is a partial perspective cross-sectional view of the display device 10 of the present embodiment during the manufacturing process.

[0014] 1 and 4 show a state in which the display panel 1 depicted in Fig. 2 and Fig. 3 has been removed from the display device 10. Also, Fig. 4 shows a state in which, in addition to the display panel 1, a frame part 3B has been removed from the display device 10.

[0015] As can be seen from FIGS. 1 to 4, the display device 10 includes a display panel 1, an optical member 2, a frame 3, an elastic member 4, double-sided tape 5, double-sided tape 6, a reflective sheet 7, double-sided tape 8, a backlight 9, and a rear panel BP.

[0016] The display panel 1 displays an image. The display panel 1 may be, for example, a liquid crystal panel that displays an image by adjusting the amount of light that transmits through each pixel. However, the display device 10 may be any device that displays an image by adjusting the amount of light that transmits through each pixel.

[0017] In this embodiment, the display panel 1 is attached to the frame 3 shown in FIG. 1 and has a horizontally long rectangular shape when viewed from the front. However, the display panel 1 may have a vertically long rectangular shape. The display panel 1 has a plate shape. The display panel 1 has a plurality of pixels arranged in a matrix. In the display panel 1, the aperture ratio of each of the plurality of pixels is controlled by a control device. Thereby, the light transmittance of each of the plurality of pixels is controlled so that an image is displayed on the display panel 1.

[0018] In the present embodiment, the optical member 2 also has a horizontally long rectangular shape in a front view, as can be seen from Fig. 1. However, the optical member 2 may also have a vertically long rectangular shape. The optical member 2 also has a plate shape. The optical member 2 is disposed so as to face the display panel 1, as can be seen from Figs. 2 and 3.

[0019] The optical member 2 transmits light emitted by a backlight 9 shown in FIG. 4 and guides the light to the display panel 1. As shown in FIG. 2 and FIG. 3, the optical member 2 includes a diffusion plate 2A and two types of optical sheets 2B-1 and 2B-2. The two types of optical sheets 2B-1 and 2B-2 have different optical properties such as refractive index. The two types of optical sheets 2B-1 and 2B-2 are called a QD (Quantum Dot) sheet and a CPOP (Core Prism On Prism) sheet, respectively. The optical member 2 is disposed so as to face the backlight 9.

[0020] The frame 3 constitutes a frame for the display panel 1. In this embodiment, the frame 3 is made of aluminum, but may be made of other materials. In this embodiment, the frame 3 is formed by subjecting an extruded long member to processes such as cutting, punching, machining, bending, joining, and welding, but may be formed by any method. The frame 3 holds the optical member 2 and the display panel 1. The frame 3 is provided so as to surround the outer periphery of the display panel 1 and the optical member 2.

[0021] 2 and 3, the frame 3 includes a frame main body 3A and a frame component 3B. Therefore, the frame main body 3A and the frame component 3B can be made of different materials. Therefore, the frame main body 3A and the frame component 3B can be made of materials suitable for their respective applications.

[0022] The frame body 3A is a member that constitutes a frame whose outline is slightly larger than the display panel 1 and the optical member 2. The frame body 3A is a frame-shaped member that extends along the four sides of a rectangle that extends along each side of the rectangular display panel 1. A reflective sheet 7 that reflects light emitted by the backlight 9 toward the optical member 2 is attached to the inner inclined surface of the frame body 3A.

[0023] As can be seen from Figs. 2 and 3, the frame part 3B is attached to the frame main body 3A so as to sandwich the end of the optical member 2 together with the frame main body 3A. In this disclosure, the frame part 3B "sandwiches the end of the optical member 2 together with the frame main body 3A" means that the end of the optical member 2 is present between the frame main body 3A and the frame part 3B. As a result, the end of the optical member 2 is held in the holding groove 30 formed by the frame main body 3A and the frame part 3B. In this specification, the "end" of the optical member 2 means a part excluding the central part of the optical member 2 and a part at a certain distance from the outer periphery of the optical member 2.

[0024] The frame part 3B is a plate-like member having a substantially rectangular shape in a front view, but the shape of the frame part 3B may be any shape as long as it can be attached to the frame main body 3A so as to sandwich the end of the optical member 2 together with the frame main body 3A. In other words, as long as the frame 3 in which the end of the optical member 2 is stored in the holding groove 30 is formed by attaching the frame part 3B to the frame main body 3A, the shape of the frame main body 3A and the shape of the frame part 3B may be any shape.

[0025] Therefore, it is not necessary for the end of the optical member 2 to be in contact with either the frame main body 3A or the frame component 3B. A gap may exist between the end of the optical member 2 and the frame main body 3A or between the end of the optical member 2 and the frame component 3B.

[0026] The rear panel BP is fixed to the frame main body 3A with double-sided tape 8. A backlight 9 is attached to the inner surface of the rear panel BP, as shown in Fig. 4. Light emitted by the backlight 9 travels toward the position of the optical member 2.

[0027] The elastic member 4 is provided between the frame part 3B and the end of the optical member 2. The elastic member 4 is in contact with both the frame part 3B and the end of the optical member 2. The elastic member 4 is made of a flexible material such as rubber. Therefore, even if the frame part 3B is pressed against the optical member 2, the elastic member 4 functions as a cushion by elastically deforming. As a result, the risk of damaging the optical member 2 is reduced. Therefore, it is possible to reduce the risk of defects occurring in the image displayed on the display panel 1 due to damage to the optical member 2.

[0028] The double-sided tape 5 fixes the frame main body 3A and the optical member 2. Therefore, by using the double-sided tape 5, the end of the optical member 2 can be bonded to the frame main body 3A by pressing the end of the optical member 2 toward the frame main body 3A from directly above the optical member 2. Therefore, the end of the optical member 2 can be more reliably bonded to the frame main body 3A.

[0029] Furthermore, by using the double-sided tape 5, the frame part 3B can be attached to the frame main body 3A in a state in which the optical member 2 is fixed to the frame main body 3A. Therefore, it is possible to reduce the difficulty of the work caused by the optical member 2 moving when attaching the frame part 3B to the frame main body 3A. Also, for example, when the display device 10 falls from the installation surface or topples over, causing the optical member 2 to move to the right in FIG. 3, it is possible to prevent the optical member 2 from being damaged due to contact between the optical member 2 and the frame main body 3A.

[0030] The frame part 3B is attached to the frame main body 3A by fitting. Therefore, the frame part 3B can be easily attached to the frame main body 3A. The specific fitting structure will be shown later. The fitting may be any of a clearance fit, an interference fit, or an intermediate fit.

[0031] The display panel 1 is attached to the frame part 3B with double-sided tape 6. Therefore, a material suitable for attaching the display panel 1 can be selected as the material for the frame part 3B.

[0032] Although the frame part 3B is attached from the inside to the outside of the frame main body 3A, it may be attached from the outside to the inside of the frame main body 3A. Furthermore, although the frame part 3B has an extremely elongated rectangular plate shape in this embodiment, the shape of the frame part 3B is not particularly limited.

[0033] The frame main body 3A is provided with a protrusion 3Apr that suppresses movement of the optical member 2. Therefore, in the holding groove 30 formed by the frame main body 3A and the frame parts 3B, the optical member 2 is prevented from moving along the holding groove 30. In this embodiment, the two protrusions 3Apr are provided only at positions that restrict the left-right movement of the optical member 2 in the holding groove 30. However, two more protrusions 3Apr may be provided at positions that restrict the up-down movement of the optical member 2 in the holding groove 30.

[0034] 5 and 6 are partial cross-sectional views of first and second modifications of display device 10 of the first embodiment, respectively.

[0035] As shown in Fig. 5, the double-sided tape 5 is provided, but the elastic member 4 may not be provided. Also, as shown in Fig. 6, both the elastic member 4 and the double-sided tape 5 may not be provided. Furthermore, although not shown, the elastic member 4 is provided, but the double-sided tape 5 may not be provided. In both of these modifications 1 and 2, the frame part 3B is attached to the frame main body 3A so as to sandwich the end of the optical member 2 together with the frame main body 3A.

[0036] Fig. 7 and Fig. 8 are respectively a perspective view and a front view of the frame 3 of the display device 10 of the present embodiment. Fig. 9 is a cross-sectional view of the frame 3 of the display device 10 of the present embodiment, taken along line IX-IX in Fig. 8. Fig. 10 is a partial perspective view of the frame 3 of the display device 10 of the present embodiment, a perspective view of a portion surrounded by dashed line X in Fig. 8.

[0037] Fig. 11 is a cross-sectional view of the frame 3 of the display device 10 of the present embodiment, taken along the line XI-XI in Fig. 8. Fig. 12 is a partial front view of the frame 3 and the frame main body 3A of the display device 10 of the present embodiment, corresponding to the portion surrounded by the dashed line X in Fig. 8. Fig. 13 is a partial front view of the frame main body 3A of the display device 10 of the present embodiment, corresponding to Fig. 12 and showing only the frame main body 3A.

[0038] Figures 14 and 15 are respectively a front view and a bottom view of frame part 3B of display device 10 of the present embodiment. Figure 16 is a partial front view of an end part of frame part 3B of display device 10 of the present embodiment, and is a view of a part surrounded by dashed line XVI in Figure 14. Figure 17 is a partial bottom view of an end part of frame part 3B of display device 10 of the present embodiment, and is a view of a part surrounded by dashed line XVII in Figure 15.

[0039] As can be seen from Figs. 7 to 17, the frame main body 3A has a rectangular frame shape. The frame main body 3A has a through hole 3Ath penetrating in the thickness direction. Furthermore, a protrusion 3Apr is provided in a holding groove 30 (see Figs. 2 to 4) formed by the frame main body 3A and the frame component 3B. The frame component 3B is an extremely elongated plate-like member. Near each of both ends of the frame component 3B, there is a protruding portion 3Bpr that protrudes in the thickness direction of the frame component 3B. The protruding portion 3Bpr is fitted into the through hole 3Ath.

[0040] 18A and 18B are cross-sectional views showing a first step and a second step, respectively, of a method for attaching optical member 2 to frame 3 in a manufacturing process for display device 10 of the present embodiment.

[0041] As shown in Fig. 18A, first, the optical member 2 is bent in the long side direction so that the optical member 2 can be inserted from the notch N to a position that will become the holding groove 30. Then, as shown in Fig. 18B, while the optical member 2 is in a bent state, the optical member 2 is inserted through the notch N to a position that will become the holding groove 30. Next, the frame part 3B is attached to the frame main body 3A (not shown). As a result, the optical member 2 is held in the holding groove 30. Movement of the optical member 2 in the long side direction within the holding groove 30 is restricted by the protrusion 3Apr.

[0042] As described above, the frame body 3A is provided with two notches N capable of receiving both ends of the optical member 2, respectively. Therefore, it is easy to insert the optical member 2 into a position that will become the holding groove 30 without bending the frame body 3A. The notch N in this embodiment has a shape that corresponds to the shape of the end of the optical member 2, for example, an extremely elongated rectangle. However, the shape of the notch N may be any shape as long as it can receive the optical member 2.

[0043] 18A and 18B, the length of the notch N is smaller than the length of the long side of the optical member 2. This makes it possible to easily prevent the optical member 2 from coming out of the holding groove 30 while the frame part 3B is attached to the frame main body 3A in a state where the optical member 2 is placed at a position that will become the holding groove 30. However, the length of the notch N in the long side direction may be the same as the length of the long side of the optical member 2 or may be smaller than the length of the long side of the optical member 2.

[0044] The notch N is provided along the long side direction of the display panel 1. Therefore, by bending the optical member 2 in the long side direction, the optical member 2 can be placed at a position that becomes the holding groove 30. However, the notch N may be provided along the short side direction of the display panel 1. Furthermore, the notch N may be provided along each of the long side direction and the short side direction of the display panel 1.

[0045] According to the display device 10 of the present embodiment as described above, first, the optical member 2 is inserted into the holding groove 30 through the notch N formed in the frame 3 while being bent in the long side direction. This allows the optical member 2 to be held in the holding groove 30. Therefore, when attaching the optical member 2 to the frame 3, it is not necessary to bend the frame 3.

[0046] As a result, the risk of plastic deformation of the frame 3 is reduced. Therefore, it is possible to prevent the appearance of the display device 10 from being damaged due to the plastic deformation of the frame 3. In addition, it is possible to reduce the risk that the optical member 2 will not be able to exhibit the desired optical characteristics due to the optical member 2 receiving stress from the frame 3 as a result of the plastic deformation of the frame 3.

[0047] Furthermore, according to the display device 10 of the present embodiment, since it is not necessary to bend the frame 3 when inserting the optical member 2 into the holding groove 30, it is possible to alleviate restrictions on the material of the frame 3. Therefore, the frame 3 may be made of any material other than aluminum, such as iron, glass, or wood, or a combination thereof.

[0048] (Embodiment 2) Display device 10 of embodiment 2 will be described with reference to Fig. 19 to Fig. 26. Note that, in the following, description of the same points as display device 10 of embodiment 1 will not be repeated. Display device 10 of the present embodiment differs from display device 10 of embodiment 1 in the following points.

[0049] Fig. 19 and Fig. 20 are respectively a perspective view and a front view of the frame 3 of the display device 10 of the present embodiment. Fig. 21, Fig. 22, and Fig. 23 are respectively a perspective view, a front view, and a bottom view of the frame main body 3A of the display device 10 of the present embodiment. Fig. 23, Fig. 24, and Fig. 25 are respectively a perspective view, a front view, and a bottom view of the frame part 3B of the display device 10 of the present embodiment.

[0050] 19 to 26, the frame main body 3A in this embodiment is a rod-shaped member extending along one side of the rectangular outline of the display panel 1. In this embodiment, four frame main bodies 3A are assembled or joined together so as to form the four sides of the rectangle.

[0051] In this embodiment as well, the frame part 3B is a long and narrow plate-like member extending along the frame main body 3A near the center of the frame main body 3A extending along one side of the rectangle. Also in this embodiment as well, the frame part 3B is attached to the frame main body 3A from the inside of the frame main body 3A so as to cover the notch N of the frame main body 3A.

[0052] In the present embodiment as described above, the frame main body 3A also has two through holes 3Ath. The frame component 3B has two protrusions 3Bpr near both ends. The two protrusions 3Bpr are inserted into the two through holes 3Ath, respectively. As a result, the frame main body 3A and the frame component 3B are fixed to each other. As a result, the four frame main bodies 3A and the four frame components 3B form a structure substantially the same as that of the frame 3 of the first embodiment.

[0053] The frame 3 of this embodiment, in which four rod-shaped frame bodies 3A and four plate-shaped frame parts 3B are assembled into a frame shape, can reduce the risk of plastic deformation of the frame 3 during the manufacturing process of the display device 10, similar to the frame 3 of embodiment 1. [Explanation of symbols]

[0054] 1 Display panel 2 Optical components 3 Frame 3A Frame Body 3Apr protrusion 3B Frame parts 4 Elastic member 5 Double-sided tape N Notch

Claims

1. an optical member facing the display panel; a frame for holding the optical member; The frame is The frame body, a frame part attached to the frame main body so as to sandwich the end of the optical member together with the frame main body, Display device.

2. Further comprising an elastic member between the frame part and the end of the optical member. The display device according to claim 1 .

3. The optical member is fixed to the frame body by a double-sided tape. The display device according to claim 1 .

4. The frame parts are attached to the frame body by fitting. The display device according to claim 1 .

5. The frame body is provided with a protrusion that suppresses movement of the optical member. The display device according to claim 1 .

6. The frame body is provided with a notch capable of receiving an end of the optical member. The display device according to claim 1 .

7. The length of the notch is smaller than the length of a long side of the optical member. The display device according to claim 6.

8. The cutout is provided along a long side direction of the display panel. The display device according to claim 6.

9. The display panel is attached to the frame component. The display device according to claim 1 .

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