Indication device

Abstract

To provide a display device capable of making a part on a side of a panel retainer opposite with respect to a display panel side is hardly seeable even when the display panel is seen in an oblique direction in relation to a display surface.SOLUTION: A display device includes: a display panel having a video display part and a black band part encircling the video display part; a frame provided so as to encircle the display panel; and a panel retainer that extends inward from the frame and retains a circumferential edge of the display panel on a back side of the black band part. A part on an opposite side of a distal surface of the panel retainer with respect to the display panel side is positioned on the frame side with respect to a part on the display panel side.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] Generally, a display device includes a display panel including a video display area where a video is displayed and a black band area surrounding the video display area. For example, a display device such as that disclosed in Patent Document 1 below includes a frame area surrounding the display panel and a panel holder area extending inward from the frame area and holding the peripheral edge of the display panel behind the black band area. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2014-208384 Summary of the Invention [Problem to be solved by the invention]

[0004] In the display device disclosed in Patent Document 1, the tip end surface of the panel holding part is perpendicular to the display surface. Therefore, when the display panel is viewed perpendicularly to the display surface, the panel holding part is located behind the black band and is therefore not visible to the viewer. However, when the display panel is viewed obliquely to the display surface, the corner of the tip end surface of the panel holding part opposite the corner on the display panel side is visible.

[0005] The present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide a display device that can make the portion of the panel holding portion opposite the display panel difficult to see even when the display panel is viewed obliquely relative to the display surface. [Means for solving the problem]

[0006] The display device of the present disclosure comprises a display panel including an image display section and a black band section surrounding the image display section, a frame section arranged to surround the display panel, and a panel holding section extending inward from the frame section and holding the peripheral edge of the display panel on the back side of the black band section, with the tip surface of the panel holding section being positioned closer to the frame section than the section on the display panel side. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a front view of a display device according to a first embodiment. [Figure 2] 2 is an enlarged view of a portion of the display device according to the first embodiment, which is surrounded by a dashed line in FIG. 1. FIG. [Figure 3] 3 is a partial cross-sectional view of the display device of the first embodiment, taken along line III-III in FIGS. 1 and 2.

[0023] FIG. [Figure 4] 4 is a partial cross-sectional view of the display device of the first embodiment, and is an enlarged view of a part of FIG. 3. FIG. [Figure 5] FIG. 4 is a partial perspective view of the display device of the first embodiment, showing the part shown in FIG. 3. [Figure 6] 10 is a diagram showing a panel holding section and its periphery of a display device according to a second embodiment. FIG. [Figure 7] 10 is a diagram showing a panel holding section and its periphery of a display device according to a third embodiment. FIG. [Figure 8] FIG. 10 is a diagram showing a panel holding section and its periphery of a display device according to a fourth embodiment. [Figure 9] FIG. 10 is a diagram showing a panel holding section and its periphery of a display device according to a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Display devices according to embodiments will be described below 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.

[0009] (Embodiment 1) Fig. 1 is a front view of a display device DS according to the present embodiment. Fig. 2 is an enlarged view of a portion of the display device DS according to the present embodiment surrounded by a dashed line in Fig. 1. Fig. 3 is a partial cross-sectional view of the display device DS according to the present embodiment, taken along line III-III in Fig. 1.

[0010] The display device DS of this embodiment is a liquid crystal display device. However, the display device DS may also be an organic light-emitting diode (OLED) or a quantum dot light-emitting diode (QLED) using organic electroluminescence (EL).

[0011] The display device DS includes a display panel DP and a backlight panel BL. The display device DS also includes a panel support chassis PS that supports the display panel DP and the backlight panel BL. The display device DS also includes a backlight cover BC that is provided to cover the back surface of the backlight panel BL. Both the panel support chassis PS and the backlight cover BC may be made of metal, resin, or any other material.

[0012] The display panel DP includes, in a plan view, an image display section VD having a display surface S for displaying an image and a black band section BK surrounding the image display section VD. The display panel DP includes a front-side optical sheet 1, a liquid crystal panel 2, and a rear-side optical sheet 3 (see FIG. 4). The backlight panel BL includes a first optical member 4, a second optical member 5, and a third optical member 6 (see FIG. 4). An LED substrate serving as a light source is provided between the backlight panel BL and the backlight cover BC, but is not shown.

[0013] The panel support chassis PS includes a frame portion F, a panel holding portion PH, and a backlight holding portion LH. The frame portion F is provided to surround the outer periphery of the display panel DS in a front view. The frame portion F has a rectangular shape that extends along the outline of the rectangular display panel DS.

[0014] In this embodiment, the frame portion F is made of resin, but it may also be made of metal, and may be made of any material. The frame portion F is rectangular, but may have any shape, such as a polygon, a circle, or an ellipse, as long as it is arranged to surround the display panel DS. In this embodiment, the frame portion F surrounding the display panel DS does not have to be integrally formed from a single member. For example, of the four portions along the four sides of the rectangle, the top side, left side, and right side may be integrally formed from a single member, and the bottom side may be formed from a separate member.

[0015] The panel holding portion PH extends inward from the frame portion F and holds the peripheral edge CE of the display panel DP behind the black band portion BK. The peripheral edge CE is a frame-shaped portion that surrounds the video display portion VD of the display panel DP. When viewed from the front of the display surface S of the display panel DP, the inner tip surface TE of the panel holding portion PH is positioned outside the display panel DP relative to the inner peripheral edge of the black band portion BK. Therefore, when the display surface S of the display panel DP is viewed from directly in front in a direction perpendicular to the display surface S, the panel holding portion PH is hidden behind the black band portion BK. In this case, an observer looking at the display surface S of the display device DS does not see the panel holding portion PH.

[0016] In this embodiment, the panel holding portion PH is formed by integral molding with the frame portion F. However, the panel holding portion PH may be formed by a member independent from the frame portion F. In this case, the panel holding portion PH and the frame portion F may be connected by connecting members such as screws or bolts and nuts, or may be joined by techniques such as welding or thermocompression bonding. In this embodiment, the panel holding portion PH is made of resin, but it may also be made of metal, and may be made of any material.

[0017] The backlight holding portion LH holds the peripheral edge CE of the backlight panel BL on the rear side of the display panel DP. The backlight holding portion LH is formed by integral molding with the frame portion F. However, the backlight holding portion LH may be formed by a member independent of the frame portion F. In this case, the backlight holding portion LH and the frame portion F may be connected by connecting members such as screws or bolts and nuts, or may be joined by techniques such as welding or thermocompression bonding. In this embodiment, the backlight holding portion LH is made of resin, but it may also be made of metal, or may be made of any material.

[0018] Fig. 4 is a partial cross-sectional view of the display device DS according to the embodiment, and is an enlarged view of a part of Fig. 3. Fig. 5 is a partial perspective view of the display device DS according to the embodiment, and is a perspective view of the part shown in Fig. 3.

[0019] In FIG. 4, leading edge position P1 refers to a point at the leading edge of the surface (rear surface) of the panel holding part PH opposite to the surface on the display panel DP side. Meanwhile, in FIG. 5, leading edge position P1 refers to a line parallel to the display panel DP. Also in FIG. 4, leading edge position P2 refers to a point at the leading edge of the surface on the display panel DP side of the panel holding part PH, while in FIG. 5, leading edge position P2 refers to a line parallel to the display panel DP. Furthermore, leading edge position P3 refers to a point at the inner edge of the surface (rear surface) on the panel holding part PH side of the black band part BK. Although not shown, leading edge position P3 is a line parallel to the display panel DP.

[0020] 4 and 5, at the tip portion of the panel holding portion PH, portions on both sides of an imaginary boundary line (not shown) along the extension direction of the panel holding portion PH are referred to as portion PA and portion PB, respectively. Also, the portion relatively close to the display panel DP is referred to as portion PA, and the portion relatively far from the display panel DP is referred to as portion PA. In this embodiment, since the tip surface TE is formed of a single plane, the imaginary boundary line between portion PA and portion PB may be set at any position on the tip surface TE in FIGS. 4 and 5. Note that portion PA relatively close to the display panel DP may also be referred to as the portion on the display panel DP side. Also, portion PB relatively far from the display panel DP may also be referred to as the portion opposite the display panel DP side.

[0021] As can be seen from FIGS. 4 and 5 , with respect to the tip surface TE of the panel holding portion PH, the portion PB opposite the display panel DP side is positioned closer to the frame portion F than the portion PA on the display panel DP side. Note that, in the tip surface TE, the portions PA and PB merely indicate their relative positional relationship, and the respective sizes of the portions PA and PB may be any size. With this configuration, even when the display panel DP is viewed obliquely with respect to the display surface S of the video display unit VD, the tip position P1 of the tip surface TE on the side opposite the display panel DP side can be made difficult to see. The tip surface TE may be formed by molding using a mold, by chamfering using a cutting tool, or by any other method.

[0022] In this embodiment, the entire tip surface TE forms an inclined surface that is inclined with respect to the display surface S. This inclined surface is flat over the entire surface. Therefore, the tip surface TE can be easily formed. The angle α (see FIG. 4) that the inclined surface as the tip surface TE makes with respect to the display surface S of the display panel DS may be any angle. However, from the viewpoint of making the tip position P1 of the tip surface TE on the display panel DP side more difficult to see even when the display panel DP is viewed obliquely with respect to its display surface S, it is preferable that the angle α is small.

[0023] Furthermore, a leading edge position P1 on the side of the leading edge surface TE opposite to the display panel DP side is positioned closer to the frame part F than an imaginary line VL connecting a leading edge position P2 on the display panel DP side of the leading edge surface TE and a leading edge position P3 on the video display part VD side of the black band part BK. In this case, the leading edge position P1 is a leading edge (corner) on the opposite side to the leading edge (corner) on the display surface S side. Therefore, even when the display panel DP is viewed obliquely relative to the display surface S, the leading edge position P1 (corner) on the display panel DP side of the leading edge surface TE can be made less noticeable.

[0024] Furthermore, the corner at the tip of the panel holding part PH on the side opposite to the display panel DP, i.e., the corner formed by two surfaces extending to sandwich the tip position P1, forms an obtuse angle β (see FIG. 4), which reduces the risk of damage to the backlight panel BL caused by the backlight panel BL coming into contact with the corner when the backlight panel BL is inserted between the panel holding part PH and the backlight holding part LH.

[0025] The panel holding part PH has a protrusion PR that protrudes toward the display panel PS at a tip position P2 of the tip surface TE on the display panel DP side. This protrusion PR prevents the connection part CN from shifting inward of the display device DS.

[0026] (Embodiment 2) Next, a display device DS according to a second embodiment will be described. Note that, in the following, the same points as those in the first embodiment will not be described repeatedly. This embodiment differs from the first embodiment in the following points.

[0027] FIG. 6 is a diagram showing the panel holding part PH and its periphery of the display device DS of this embodiment.

[0028] As can be seen from Fig. 6, the entire tip surface TE is curved. This curved surface of the tip surface TE may have a constant curvature such as a circular arc surface in the cross section of Fig. 6, but it may also be a surface with a variable curvature.

[0029] As in the first embodiment, at the tip portion of the panel holding portion PH shown in FIG. 6, portions on both sides of an imaginary boundary line (not shown) along the extension direction of the panel holding portion PH are referred to as portion PA and portion PB, respectively. Furthermore, at the tip portion of the panel holding portion PH, a portion relatively close to the display panel DP is referred to as portion PA, and a portion relatively far from the display panel DP is referred to as portion PA. In this embodiment, since the tip surface TE is formed of a single curved surface, the imaginary boundary line between portion PA and portion PB may be set at any position on the tip surface TE in FIG. 6. The portion relatively close to the display panel DP, portion PA, may also be referred to as the portion on the display panel DP side. Furthermore, the portion PB relatively far from the display panel DP may also be referred to as the portion opposite the display panel DP side.

[0030] In the present embodiment, too, with respect to the tip surface TE of the panel holding part PH, the part PB on the opposite side to the display panel DP side is positioned closer to the frame part F than the part PA on the display panel DP side. Therefore, when the display panel DP is viewed obliquely with respect to its display surface S, the tip position P1 on the opposite side of the tip surface TE to the display panel DP side can be made less visible.

[0031] Furthermore, because the entire tip surface TE is curved, there is no corner with angle β as shown in Fig. 4 of embodiment 1 at tip position P1 of tip surface TE of panel holding part PH on the side opposite to the display panel DS. Therefore, according to the display device DS of this embodiment, the risk of damage to the backlight panel BL when inserting the backlight panel BL between the panel holding part PH and the backlight holding part LH is further reduced compared to the display device DS of embodiment 1.

[0032] (Embodiment 3) Next, a display device DS according to a third embodiment will be described. Note that, in the following, the same points as those in the first embodiment will not be described repeatedly. This embodiment differs from the first embodiment in the following points.

[0033] FIG. 7 is a diagram showing the panel holding part PH and its periphery of the display device DS of this embodiment.

[0034] As can be seen from Fig. 7, the portion PB of the front end surface TE opposite the display panel PS forms an inclined surface. In other words, only a part of the front end surface TE opposite the display panel PS forms an inclined surface. On the other hand, the portion PA of the front end surface TE on the display panel PS side is perpendicular to the imaginary plane including the display surface S. The inclined surface of this portion PB is flat over its entirety.

[0035] This also makes it possible to position the portion PB on the opposite side of the tip surface TE of the panel holding part PH from the display panel DP side closer to the frame part F than the portion PA on the display panel DP side. Therefore, when the display panel DP is viewed obliquely with respect to its display surface S, the tip position P1 on the opposite side of the tip surface TE from the display panel DP side can be made less visible.

[0036] Also in the display device DS of this embodiment, as in the display device DS of embodiment 1, the corner of the panel holding part PH on the side opposite to the display panel DP, that is, the corner formed by two surfaces extending to sandwich the tip position P1, forms an obtuse angle β, which makes it difficult for the backlight panel BL to be damaged when the backlight panel BL is inserted between the panel holding part PH and the backlight holding part LH.

[0037] (Fourth embodiment) Next, a display device DS according to a fourth embodiment will be described. Note that, in the following, the same points as those in the first embodiment will not be described repeatedly. This embodiment differs from the first embodiment in the following points.

[0038] FIG. 8 is a diagram showing the panel holding part PH and its periphery of the display device DS of this embodiment.

[0039] As can be seen from Fig. 8, a portion PB of the tip surface TE opposite the display panel PS forms a curved surface. A portion PA of the tip surface TE on the display panel PS side is perpendicular to an imaginary plane including the display surface S. In other words, only a portion of the tip surface TE opposite the display panel PS forms a curved surface. This curved surface as a portion of the tip surface TE may have a constant curvature like a circular arc in the cross section of Fig. 8, or may have a variable curvature.

[0040] This also ensures that the portion PB on the side opposite to the display panel DP of the tip surface TE of the panel holding part PH is positioned closer to the frame part F than the portion PA on the display panel DP side. Therefore, even when the display panel is viewed obliquely relative to the display surface S, the tip position P1 on the side opposite to the display panel DP of the tip surface TE can be made difficult to see.

[0041] Furthermore, because the portion PA of the tip surface TE opposite to the display panel DP side is curved, the tip position P1 of the tip surface TE of the panel holding part PH opposite to the display panel DS side does not have the angle β as shown in Fig. 4 of embodiment 1 or Fig. 7 of embodiment 3. Therefore, according to the display device DS of this embodiment, the risk of damaging the backlight panel BL when inserting the backlight panel BL between the panel holding part PH and the backlight holding part LH is further reduced compared to the display device DS of embodiment 1 or 3.

[0042] (Embodiment 5) Next, a display device DS according to a fifth embodiment will be described. Note that, in the following, the same points as those in the first embodiment will not be described repeatedly. This embodiment differs from the first embodiment in the following points.

[0043] FIG. 9 is a diagram showing the panel holding part PH and its periphery of the display device DS of this embodiment.

[0044] As can be seen from Fig. 9, the tip surface TE has a step ST. In this embodiment, the tip surface TE has only one step, but it may have multiple steps. The corners of the tip surface TE may be curved or chamfered.

[0045] This also ensures that the portion PB on the side opposite to the display panel DP of the tip surface TE of the panel holding part PH is positioned closer to the frame part F than the portion PA on the display panel DP side. Therefore, even when the display panel is viewed obliquely relative to the display surface S, the tip position P1 on the side opposite to the display panel DP of the tip surface TE can be made difficult to see. [Explanation of symbols]

[0046] BK Black Belt Club DS display device DP display panel F Frame section P1,P2,P3 tip position PH panel holder PA,PB part TE tip surface VD video display section VL Virtual Line

Claims

1. a display panel including a video display section and a black band section surrounding the video display section; a frame portion provided to surround the display panel; a panel holding portion that extends inward from the frame portion and holds a peripheral edge of the display panel on the rear side of the black belt portion, a portion of a tip end surface of the panel holding portion opposite to the display panel side is positioned closer to the frame portion than a portion of the tip end surface of the panel holding portion on the display panel side; The entire tip surface is an inclined surface, a tip position of the tip surface on the opposite side to the display panel side is positioned closer to the frame portion than an imaginary line connecting the tip position of the tip surface on the display panel side and the tip position of the black band portion on the video display portion side.

2. The display device according to claim 1 , wherein a corner of the panel holding portion on the side opposite to the display panel forms an obtuse angle.

Images