JP2013134295A - Curved surface display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curved surface display in which thickness of a display is thinned, which is suitable for being arranged on the circular column surface and at a corner part, in which stress to be applied to a printed wiring board and distortion to be applied to a panel are reduced, and variation in luminance is hard to be generated at the end and the center part of the panel in the curved surface display.SOLUTION: A curved surface display 1 includes a holding part 40 which holds a panel 10 in the curved shape, and holds printed wiring boards 21-25. A panel holding plate 41 is tabular which curves with curvature equivalent to that of the panel 10, and its outer peripheral surface becomes a panel sticking surface 410. Top surfaces of a board holding plate 42 and respective board sticking parts 421-424 become board sticking surfaces 421a-424a to which the printed wiring boards 21-24 are stuck. The respective board sticking surfaces 421a-424a are planar, and the board sticking surfaces adjacent to one another bend along curvature of the panel 10, and bend in the polygonal shape.

Description

  The present invention relates to a curved display whose display surface is curved concavely or convexly.

In recent years, the market for flat displays such as liquid crystal displays and organic EL displays has grown rapidly, and flat displays have been developed. With the development of flat displays, the display can be made thinner and lighter, and the degree of freedom in selecting the size and shape of the display has expanded.
Such flat displays are generally produced by forming elements on a substrate such as glass in order to display an image. A printed wiring board that supplies scanning signals, video signals, power, and the like is connected to the display via a flexible wiring board to constitute a display device. Here, the plurality of printed wiring boards are extended from the edge of the panel via the plurality of flexible wiring boards.

By the way, in the flat display, as disclosed in Patent Document 1, a curved display in which a thin display panel is curved in a cylindrical shape so that the display surface is convex or concave has been realized.
Such a curved display has a structure in which a curved panel is held by a curved back plate or face plate, and can be installed in a small space at various installation locations. For example, in the case of a curved display with a convex display surface, it is wound around a convex surface (outer peripheral surface) of a cylinder (see FIG. 11A), or in the case of a curved display with a concave display surface, along the corner portion in the vehicle. It is suitable for installation (see FIGS. 11B and 11C).

  In addition, the curved surface display can display a moving image on a curved surface, thereby giving an approaching impact to a person and enhancing the advertising effect compared to the case of displaying on a flat display. In addition, when the touch panel is attached with the display surface of the display concave, it has user-friendly advantages such as being easy to touch, placing a hand, and being familiar with the hand, so it can be applied to various types of display devices. Expected.

JP 2010-8479 A

Unlike a flat display, such a curved display has a problem of how to hold a printed wiring board connected to a curved panel via a flexible wiring board.
For example, when a printed wiring board is arranged on one plane next to the curved side of a curved panel and connected to the printed wiring board through the flexible wiring board from the curved side of the panel, the flexible wiring board is connected. The distance between the panel and the printed wiring board differs between the panel center and the edge. In addition, since the flexible wiring board connects the planar printed wiring board and the curved panel, the flexible wiring board is twisted and the panel is likely to be partially distorted.

  When the number of electrodes on the panel is small, it is possible to draw the flexible wiring board from the non-curved side and connect it to the printed circuit board without pulling the flexible wiring board from the curved side. In the fine case, since a large number of wirings are provided in both the vertical and horizontal directions of the panel, it is necessary to draw out the flexible wiring board from the curved side and connect it to the printed wiring board.

In the invention disclosed in Patent Document 1, each printed wiring board is arranged in a direction perpendicular to the display panel, and is connected to a plurality of printed wiring boards arranged along a curved side accordingly. The length of the flexible wiring board is longer at the end and shorter at the center.
According to this configuration, the printed wiring board can be installed without bending, so the risk of panel breakage can be reduced. However, since the printed wiring board is installed in a direction perpendicular to the panel, the thickness of the display is printed. The wiring board has a width (for example, about 30 mm) or more and cannot be a thin curved display. It is also unsuitable for installation in corners.

Further, the length of the flexible wiring board connecting the panel and the printed wiring board (the length of the wiring) is long at the end of the panel and short at the center. This causes a difference in the amount of current flowing through each wiring between the end portion and the center portion of the panel, which causes variations in luminance.
The present invention has been made in view of the above problems, and is suitable for placement on a convex surface or a corner portion in a curved display, and can reduce stress applied to a printed wiring board and distortion applied to the panel. An object of the present invention is to provide a device in which variation in luminance is unlikely to occur between an end portion and a central portion.

  In order to achieve the above object, a curved display according to the present invention includes a plurality of pixels arranged two-dimensionally and a plurality of wirings connected to electrodes of the plurality of pixels on a curved substrate. A plurality of printed wiring boards that are arranged on the side of the curved side of the panel portion and that supply at least one of a signal and power to a plurality of wirings, and a plurality of wirings that connect the plurality of wirings and the printed wiring board. In a curved display including a flexible wiring board and a holding unit that holds the panel unit and the printed wiring board, a panel pasting surface that curves in accordance with the curvature of the panel unit and a plurality of printed wiring boards are pasted on the holding unit. A plurality of substrate pasting surfaces were provided, each substrate pasting surface was planar, and adjacent substrate pasting surfaces were bent along a direction in which the panel pasting surface was curved.

  According to the curved surface display of the present invention, since each substrate pasting surface is planar, the printed wiring board can be brought into close contact with the substrate pasting surface without curving. Therefore, no excessive stress is generated on the printed wiring board, and the printed wiring board can be attached to the holding portion with good adhesion, so that the printed wiring board can be stably fixed against vibration. Phenomena such as peeling off from the affixed part are less likely to occur. Moreover, electrical connection can be ensured.

In addition, since the plurality of substrate pasting surfaces are bent along the curvature of the panel, and the panel portion and the printed wiring board are connected by a flexible wiring board, the strain force is applied to the panel portion. Never reach.
Therefore, the stress applied to the printed wiring board can be reduced, and luminance variations hardly occur between the end portion and the center portion of the panel portion.

  Further, the curved display according to the present invention can reduce the thickness of the display and is also suitable for being arranged on a convex surface or a corner portion.

1 is a perspective view showing a main part of a main body of a curved display 1 according to a first embodiment. It is the figure which looked at the principal part of the curved display 1 from the vertical direction (Y direction). It is a figure which shows the connection form of the wiring of the panel 10 and the printed wiring boards 21-25. It is a perspective view of the holding stand 40 used for the curved display 1. It is the figure which looked at the principal part of the curved display 2 from the vertical direction (Y direction). 3 is a perspective view showing a main body of the curved display 3. FIG. It is a figure which shows the principal part of the curved display 4,5. 2 is a perspective view showing a main part of a curved display 6. FIG. 3 is a perspective view showing a main part of a curved display 7. FIG. It is a perspective view which shows the principal part of the curved surface displays 8 and 9. FIG. It is a figure which shows the usage example of the curved surface display concerning embodiment.

  The curved display according to the present invention includes a panel portion in which a plurality of pixels arranged in a two-dimensional manner on a curved substrate, a plurality of wirings connected to electrodes of the plurality of pixels, and a curved portion in the panel portion. A plurality of printed wiring boards arranged in parallel with the side and supplying at least one of a signal and power to the plurality of wirings, a plurality of flexible wiring boards connecting the plurality of wirings and the printed wiring board, a panel unit, and In a curved display including a holding unit for holding a printed wiring board, the holding unit is provided with a panel pasting surface that curves in accordance with the curvature of the panel unit and a plurality of board pasting surfaces to which a plurality of printed wiring boards are pasted. Each board application surface is flat, and adjacent board application surfaces are bent along the direction in which the panel application surface is curved, causing excessive stress on the printed circuit board. Since the printed wiring board can be attached to the holding part with good adhesion without occurrence, it can be stably fixed against vibration, and the printed wiring board is unlikely to peel off from the board attaching part. . Moreover, electrical connection can be ensured. In addition, since the plurality of substrate pasting surfaces are bent along the curvature of the panel portion, and the panel portion and the printed wiring board are connected by a flexible wiring board, the panel portion is distorted with respect to the panel portion. There is no power.

Therefore, the stress applied to the printed wiring board can be reduced, and the luminance variation between the end portion and the central portion hardly occurs. Further, the thickness of the display can be reduced, and it is suitable for being arranged on a convex surface or a corner.
In the curved display, if the holding part is formed with a curved plate body, the part where the panel pasting surface is formed, and the part formed with the board pasting surface is formed with a plate body bent into a polygonal shape. Easy to form.

Alternatively, in the curved display, the holding portion is formed of a curved plate-like member, a plurality of substrate attachment surfaces are formed on the back side of the panel attachment surface, and each of the plurality of flexible wiring boards is extended from the panel, You may bend so that the edge of a support stand may be surrounded and you may connect to each of several printed wiring boards.
As a result, since each of the plurality of printed wiring boards is arranged on the back side of the panel unit, the area occupied by the printed wiring board can be reduced in the entire area of the curved display, and the proportion occupied by the display surface is increased. it can.

  Alternatively, on a curved substrate, a plurality of pixels arranged two-dimensionally, a panel portion in which a plurality of wirings connected to electrodes of the plurality of pixels are arranged, and a curved side in the panel portion are arranged in parallel A plurality of printed wiring boards that supply at least one of signal and power to a plurality of wirings, a plurality of flexible wiring boards that connect the plurality of wirings and the printed wiring board, and a panel unit and the printed wiring board are held. In the curved display including the holding unit, the holding unit is provided with a panel pasting surface that curves in accordance with the curvature of the panel unit, and a substrate pasting surface to which a plurality of printed wiring boards are pasted. You may make it curve with a curvature smaller than a panel sticking surface along the direction in which a sticking surface curves.

  This curved display also provides substantially the same effect. That is, there is no excessive stress on the printed wiring board, and the printed wiring board can be affixed to the holding portion. That is, the fixing can be stably maintained, and the phenomenon that the printed wiring board is peeled off from the substrate pasting portion hardly occurs, and the distortion force is hardly exerted on the panel portion.

In the curved display, the holding portion can be easily formed by forming the portion where the panel sticking surface is formed and the portion where the substrate sticking surface is formed with curved plates.
Alternatively, in the curved display, the holding portion is formed of a curved plate-shaped member, the substrate sticking surface is formed on the back side of the panel sticking surface, and each of the plurality of flexible wiring boards extends from the panel portion and is supported. You may bend so that the edge of a base may be surrounded and you may connect to each of several printed wiring boards.

Thereby, since each printed wiring board is arranged on the back side of the panel, the area occupied by the printed wiring board in the entire area of the curved display can be reduced, and the proportion occupied by the display surface can be increased. .
Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments.

[Embodiment 1]
(Overall configuration of curved display 1)
FIG. 1 is a perspective view showing the main part of the main body of the curved display 1 according to the first embodiment. In each figure, the arrow X indicates the horizontal direction of the display, the arrow Y indicates the vertical direction, and the arrow Z indicates the front. FIG. 2 is a view of the main part of the curved display 1 as viewed from the vertical direction (Y direction).

  The main body of the curved display 1 has a panel 10 that is curved in a cylindrical shape so that the image display surface is convex, and a plurality of printed wiring boards 21 that are arranged side by side in a direction in which the curved side 10a of the panel 10 extends. To 24, a plurality of flexible wiring boards 31 to 34 for connecting the wirings 12 and 13 of the panel 10 and the printed wiring boards 21 to 24, a panel holding plate 41 to which the panel 10 is pasted, and the printed wiring boards 21 to 24 are pasted. And a holding portion 40 having a substrate holding plate 42 to be provided.

The panel 10 has a curved cross section along the horizontal plane (XZ plane) and a straight cross section along the vertical plane (YZ plane). The panel 10 is a rectangular organic EL panel here, and has four sides of long sides 10a and 10b which are long sides and vertical sides 10c and 10d which are short sides. Its size is 20 type, and the sides 10a and 10b are curved with a radius of R300 mm.
As shown in FIG. 2, the main body of the curved display 1 includes a power supply circuit unit 26 that is a power source and a signal supply source beside the holding unit 40, and the holding unit 40 and the power supply circuit unit 26 include a case 50. Is housed inside. The case 50 covers the entire non-display area except the display area of the panel 10 on the surface of the main body of the curved display 1.

(Structure and manufacturing method of panel 10)
In the panel 10, a light emitting layer 16 including an organic light emitting layer and device electrodes is formed on a curved element substrate 15, and a sealing layer 17 is covered thereon (see FIG. 2).
The element substrate 15 is 450 mm wide and 270 mm long.
A plurality of pixels are arranged in a matrix by forming the light emitting layer 16.

Each pixel includes a switching TFT, a driving TFT, a storage capacitor, an anode, a cathode, and an organic light emitting layer. The scanning line 11, the data line 12, and the power supply line 13 are connected to the anode or cathode of each pixel through a switching TFT, a driving TFT, and the like.
The sealing layer 17 is made of a light-transmitting material and is a substrate that prevents the ingress of moisture and oxygen that accelerates the deterioration of the organic EL. For example, a glass substrate (horizontal 445 mm, vertical 265 mm, thickness 0.7 mm) It forms using. This glass substrate has a higher gas barrier property than a plastic substrate.

When the panel 10 is produced, an acid anhydride is added as a curing agent to the epoxy resin as a sealing agent by stacking a glass plate as a sealing layer 17 on the element substrate 15 on which the light emitting layer 16 is formed, It can be produced by using an adhesive to which a silane coupling agent is added as an accelerator and fixing the peripheral part other than the display part.
Moreover, in order to make the panel 10 easy to bend, it is etched and thinned so that the thickness of the panel 10 becomes 0.1 mm to 0.5 mm after sealing. The etching solution can be prepared by using an aqueous solution diluted with hydrofluoric acid and immersing it in a tank in which the etching solution is circulated for a predetermined time. As a method for thinning the panel 10, mechanical polishing or chemical polishing may be applied.

When the thickness of the panel is reduced to 0.1 mm, the long side can be curved with a radius of curvature R = 200 mm, and when the thickness is 0.5 mm, the radius of curvature can be curved to R = 500.
However, if the thickness is 0.1 mm, it is too thin, and if it is not held, cracks are likely to occur when twisting occurs, so the panel thickness is 0.2 mm this time.

(Wiring structure and operation of curved display 1)
FIG. 3 is a diagram showing a connection form of wiring in the panel 10 and the printed wiring boards 21 to 25.
The panel 10 has a plurality of scanning lines 11 arranged in the horizontal direction (X direction), a plurality of data lines 12 and power supply lines 13 arranged in the vertical direction (Y direction), and wired in a matrix. Yes.

And the right end part of the some scanning line 11 is connected to the printed wiring board 25 (The board | substrate size is 270 mm x 25 mm in width) via the flexible wiring boards 35-38, and the data line 12 and the power supply line 13 are connected. The lower end portion is connected to the printed wiring boards 21 to 24 via flexible wiring boards 31 to 34 (each board size is 35 mm long × 100 mm wide).
The printed circuit boards 21 to 25 are connected to the power supply circuit unit 26 through cable line groups 91 to 95.

  The flexible wiring boards 31 to 38 have a tape-shaped substrate portion made of a polyimide film and a wiring portion formed on one surface. The scanning line 11 is connected to the wiring of the flexible wiring boards 35 to 38 by thermocompression bonding through the anisotropic conductive film in the mounting region at the lateral end of the panel 10, and the data line 12 and the power line 13 are In the mounting region at the lower end of the panel 10, the wiring portions of the flexible wiring boards 31 to 34 are connected by thermocompression bonding via an anisotropic conductive film.

Further, the cable wire groups 91 to 95 are connected to the printed wiring boards 21 to 24 through the connector 90.
In the curved display 1 having such a configuration, the scanning signal supplied from the power supply circuit unit 26 is applied to the scanning line 11 of the panel 10 via the cable line group 95, the printed wiring board 25, and the flexible wiring boards 35 to 38. The data signal and power supplied from the power supply circuit unit 26 are supplied to the data line 12 and the power supply line 13 of the panel 10 through the cable line groups 91 to 94, the printed wiring boards 21 to 24, and the flexible wiring boards 31 to 34, respectively. Supplied.

In the panel 10, when scanning signals are supplied to the plurality of scanning lines 11, data signals are supplied to the plurality of data lines 12, and power is supplied to the power supply line 13, each pixel operates to emit light.
When the switching TFT connected to the scanning line 11 is turned on, the charge corresponding to the image signal applied via the data line 12 is held in the holding capacitor, and the driving TFT is turned on according to the state of the holding capacitor. The off state is determined. When electrically connected to the power supply line 13 via the driving TFT, a drive current flows from the power supply line 13 to the anode, and further, a current flows to the cathode through the organic light emitting layer. In the organic light emitting layer, holes and electrons are recombined and excited to emit light according to the amount of current flowing between the anode and the cathode.

(Holding of panel 10 and printed wiring boards 21-25)
The curved display 1 includes a holding unit 40 that holds the panel 10 in a curved shape and holds the printed wiring boards 21 to 25.
FIG. 4 is a perspective view of the holding unit 40.
The panel holding plate 41 has a plate shape that is curved with the same curvature as that of the panel 10, and the outer peripheral surface thereof is a panel pasting surface 410.

  The board holding plate 42 has a plurality of flat board sticking parts 421 to 424, and the upper surfaces of the board sticking parts 421 to 424 become board sticking faces 421a to 424a to which the printed wiring boards 21 to 24 are stuck. ing. Each of the substrate pasting surfaces 421a to 424a is planar, and is adjacent to each other (substrate pasting surface 421a and substrate pasting surface 422a, substrate pasting surface 422a and substrate pasting surface 423a, substrate pasting surface 423a and substrate pasting surface 424a. ) Is bent along the curvature of the panel 10.

Substrate pasting portions 421 to 424 that form the substrate holding plate 42 have a plate shape that is bent into a polygonal shape along the curvature of the panel 10.
In addition, a substrate pasting surface 43 for pasting the printed wiring board 25 is provided adjacent to the panel pasting surface 410 at the end of the panel holding plate 41. The substrate pasting surface 43 is a position adjacent to the vertical side 10 c of the panel 10.

Since the printed wiring board 25 is thicker than the panel 10, the panel holding plate 41 is reduced in thickness in the region of the board attaching surface 43 so that the surface of the printed wiring board 25 and the surface of the panel 10 are aligned. It is preferable.
Further, here, the substrate attaching surface 43 for attaching the printed wiring board 25 is provided at the end of the panel holding plate 41. However, a separate plate member is attached to the end of the panel holding plate 41 and the substrate attaching surface is attached thereto. 43 may be provided.

Alternatively, the substrate holding plate 42 may be extended upward (Y direction) from the right end thereof, and a substrate pasting surface on which the printed wiring board 25 is pasted may be provided.
(Fixing of panel 10 to panel sticking surface 410)
The sides 10a and 10b of the panel 10 are pressed from above by belt-like pressing plates 51a and 51b. The holding plates 51a and 51b are made of an aluminum spring plate. A hole 53 through which the screw 52 passes is opened at the end of the holding plate 51a and 51b, and a screw hole 54 into which the screw 52 is screwed into the panel holding plate 41. Is engraved. Thus, the side part of the panel 10 can be fixed with equal force by using a spring plate.

The panel holding plate 41 in the holding unit 40 is produced, for example, by pressing an aluminum plate (280 mm × 470 mm) having a thickness of 8 mm, bending it with a radius R300 mm, and then polishing it.
The substrate holding plate 42 is manufactured by bending an aluminum plate having a size of 40 mm × 460 mm mm and a thickness of 2 mm. The length of each of the substrate pasting portions 421 to 424 is 105 mm, which is longer than the lateral length of the printed wiring boards 21 to 24, and the bending angle between adjacent board pasting portions 421 to 424 is 160 °.

The holding unit 40 is manufactured by welding the panel holding plate 41 and the substrate holding plate 42.
As a method of fixing the panel 10 on the curved panel attaching surface 410, the panel 10 is connected to the panel attaching surface 410 of the panel holding plate 41 after connecting the panel 10 and the flexible wiring boards 31 to 36 to the printed wiring boards 21 to 25. After being bent along, the panel 10 is fixed on the panel sticking surface 410 in a curved state by tightening the holding plates 51 a and 51 b with the screws 52.

The panel 10 may be adhered to the panel attaching surface 410 with an adhesive, but the panel 10 can be easily attached and detached by using the holding plates 51a and 51b as described above.
After fixing the panel 10 to the panel sticking surface 410, the printed wiring boards 21-24 are each fixed on the board sticking parts 421-424 with an adhesive. Moreover, the printed wiring board 25 is fixed on the board sticking surface 43 with an adhesive.

Since the vertical side 10c side of the panel 10 is not curved, the printed wiring board 25 is not stressed. Therefore, the printed wiring board 25 can be fixed simply by bonding the four ends.
However, when the panel 10 is bent, the four corners of the panel 10 are easily distorted. Therefore, the four corners of the panel 10 are lightly aligned with the four corners of the panel holding plate 41 and temporarily bent with screws or the like to be bent while adjusting. This is effective in preventing misalignment.

(Effect of curved display 1)
First, a usage example of the curved display 1 will be described.
FIG. 11A shows an example in which the curved display 1 is installed around a columnar column 100 and an image is displayed on a convex display surface.
As shown in FIG. 2 and FIG. 11A, the case 50 has a curved shape along the holding portion 40, so that the curved display 1 has a thin and curved plate shape as a whole. Therefore, the curved display 1 is attached to the outer peripheral surface of the columnar column 100 and can form a display surface along the outer peripheral surface of the column 100. In particular, a space-saving image display device can be realized by matching the curvature of curvature of the panel 10 and the holding unit 40 with the curvature of the column 100.

Since the curved display 1 has a convex display surface, the curved display 1 can give an impression of being raised to a person who sees the curved display.
Further, when an image moving in the horizontal direction is displayed, the image is moved and displayed at a position approaching from a position away from a person, and a powerful and effective display with a sense of depth is also possible.
Further, when the curved display 1 is used for signage, it can attract more people's eyes and increase the advertising effect compared to a flat display.

Next, a specific effect of the curved display 1 will be described.
If the printed wiring boards 21 to 24 are pasted on a curved surface (R300 mm) curved with the same curvature as the panel pasting surface 410, a gap is generated between the printed wiring boards 21 to 24 and the pasting surface. It is difficult to keep it stable in a place where the vibration is large.
Moreover, although the connector 90 is attached to the printed wiring boards 21-24, since the largest size as the connector 90 is 5 mm x 40 mm (4 mm in height) and it is in the metal case, this is bent greatly. It is difficult. Therefore, if the printed wiring boards 21 to 24 are forcibly bent, the connector 90 is likely to be peeled off from the printed wiring boards 21 to 24, or poor contact with the cable is likely to occur.

  On the other hand, in the curved display 1, since each of the substrate pasting surfaces 421a to 424a is flat, the printed wiring boards 21 to 24 can be pasted and fixed without being curved. Therefore, the printed wiring boards 21 to 24 can be fixed on the board attaching portions 421 to 424 with good adhesion, and the fixing can be stably maintained against vibration. In addition, phenomena such as peeling of the printed wiring boards 21 to 24 from the board pasting portions 421 to 424 hardly occur, and electrical connection can be ensured.

Moreover, since the board | substrate sticking parts 421-424 are planar, when a flat printed wiring board 21-24 is affixed to this, the printed wiring board 21-24 does not apply an excessive stress.
Furthermore, since the board | substrate pasting parts 421-424 are bent along the curve of the panel 10, since the panel 10 and the printed wiring boards 21-24 are connected by the flexible wiring boards 31-34, The twist concerning each flexible wiring board 31-34 decreases. Therefore, the force locally applied to the panel 10 from each flexible wiring board 31 to 34 is also reduced.

As shown in FIG. 4, the substrate attachment surfaces 421 a to 424 a are attached at positions lower than the panel attachment surface 410, but the attachment positions of both may be the same height, or conversely The board pasting surfaces 421a to 424a may be at higher positions than the panel pasting surface 410, and the stress relaxation effect by the flexible wiring boards 31 to 34 can be obtained similarly.
Since the holding | maintenance part 40 is formed with the metal, the heat | fever which the panel 10 and the printed wiring boards 21-25 generate | occur | produce at the time of panel lighting can be thermally radiated efficiently.

In the curved display 1, if the thickness of the panel 10 and the panel holding plate 41 is reduced, the thickness of the entire apparatus may be reduced, and the length of the flexible wiring boards 31 to 34 can be shortened. Can be lowered.
Each cable line group 91-94 is connected to one connector 90, and a maximum of 30 cable lines are grouped. If such a group of cable wires is spread and extended to the side of the panel 10, the area of the non-display area may be increased. However, since each cable wire group 91 to 94 is turned to the back side of the panel 10, The width of the display area can be reduced. For example, when the diameter of the cable wire is 1 mm, the cable wire group 91 to 94 is bent at a right angle after being connected to the connector 90, thereby suppressing the width extending laterally from the edge of the substrate holding plate 42 (width 40 mm) to 2 mm. be able to.

  Further, when the number of cable lines in the cable line groups 91 to 94 is large and particularly 10 or more, the weight due to its own weight or bending affects the connector 90 and the printed wiring boards 21 to 24. As described above, the board holding plate Since the printed wiring boards 21 to 24 can be fixed to 42 with an adhesive (or a screw), even if the flexible wiring boards 31 to 34 are pulled, no force is applied to the panel 10.

[Embodiment 2]
In the present embodiment, curved display 2 and 3 having a concave display surface will be described.
(Configuration of curved display 2)
The curved display 2 shown in FIG. 5 has the same configuration as the curved display 1, but the panel 10 is curved so that the display surface has a concave shape, and accordingly, the panel pasting surface 410 also has a concave shape. Is curved. Further, the substrate pasting surfaces 421a to 424a, which are the upper surfaces of the board pasting portions 421 to 424, are bent along the concave shape of the panel pasting surface 410.

In the curved display 2, as the panel 10, an organic EL panel having a width of 450 mm, a length of 270 mm, and a thickness of 0.2 mm may be used as in the first embodiment.
Also in such a curved display 2, the case 50 has a curved shape along the holding portion 40, and has a plate shape in which the whole is thin and the display surface is curved in a concave shape.
(Effect of curved display 2)
FIG. 11B shows an example in which the curved display 2 is installed at the corner of the wall and an image is displayed on the concave display surface.

As shown in FIG. 5 and FIG. 11 (b), the curved display 2 is attached along the inner peripheral surface of the corner portion 200 of the wall and is suitable for an application of displaying a concave shape.
Since the curved display 2 is thin and curved in a concave shape, it can be installed in a state along the inner surface of the corner 200 more than the flat display when installed in the corner 200. A large space can be secured.

FIG. 11C is an example in which the curved display 2 is installed along the connecting curved surface 303 between the ceiling surface 301 and the wall surface 302 in the train, and the vertical direction (Y direction) of the curved display 2 is horizontal. In other words, the long side of the curved display 2 is arranged so as to be substantially along the vertical direction.
Also in this case, since the curved display 2 can be installed in a state along the connecting curved surface 303 close to the ceiling surface 301, a wide space can be secured in front of the curved display 2.

In addition, a wide range of passengers in the train can see the display of the curved surface display 2 with a slight increase in line of sight, which makes it easy for many people to see.
Also in the curved display 2, since the board pasting portions 421 to 424 are flat like the curved display 1, the printed wiring boards 21 to 24 can be fixed on the curved wiring display 2 without bending them. Therefore, the printed wiring boards 21 to 24 can be fixed on the board attaching portions 421 to 424 with good adhesion, and the fixing can be stably maintained against vibration. In addition, phenomena such as peeling of the printed wiring boards 21 to 24 from the board pasting portions 421 to 424 hardly occur, and electrical connection can be ensured.

Moreover, since the board | substrate pasting parts 421-424 are planar, an excessive stress does not generate | occur | produce on the printed wiring boards 21-24.
Moreover, since the board | substrate sticking parts 421-424 are bent along the curve of the panel 10, and the panel 10 and the printed wiring boards 21-24 are connected by the flexible wiring boards 31-34, printed wiring The stress generated when the substrates 21 to 24 are mounted on the substrate pasting portions 421 to 424 is also alleviated, and no large stress is applied to the panel 10.

(Configuration of curved display 3)
FIG. 6 is a perspective view showing the main body of the curved display 3.
The curved display 3 is also curved so that the display surface of the panel 10 has a concave shape.
Also in the curved display 3, the panel 10 may be an organic EL panel having a width of 450 mm, a length of 270 mm, and a thickness of 0.2 mm, as in the curved display 1.

The holding base 60 of the curved display 3 is a resin product having a quadrangular pyramid shape whose upper width is narrow, and has a height of 500 mm, a width of 300 mm, and a thickness of 400 mm, and has an inclined surface 60a curved in a concave shape. And the laminated body of the panel 10 in which the display surface curved to the concave shape, and the curved panel holding plate 61 is affixed on the center part of the inclined surface 60a.
The panel holding plate 61 is the same as the panel holding plate 41, and is curved so that the panel attaching surface has a concave shape.

The panel holding plate 61 is formed, for example, by bending an aluminum plate (280 mm × 470 mm) having a thickness of 5 mm with a radius R500.
In the holding table 60, the inclined surface 60 a is formed with a recess that matches the shape of the panel holding plate 61 so that the panel holding plate 61 can be embedded.
Substrate pasting surfaces 621 to 624 to which the printed wiring boards 21 to 24 are pasted are formed on the sides of the inclined surface 60a.

Similar to the substrate bonding surfaces 421a to 424a, the substrate bonding surfaces 621 to 624 are bent in accordance with the concave shape of the panel bonding surface of the panel holding plate 61.
The substrate pasting surfaces 621 to 624 are four surfaces each having a width of 120 mm and inclined at 50 degrees, 60 degrees, 70 degrees, and 80 degrees with respect to the horizontal plane.
The printed wiring boards 21 to 24 are pasted on the board pasting surfaces 621 to 624.

Each substrate sticking surface 621 to 624 is provided with screw holes at four corners, and the printed wiring boards 21 to 24 are fixed to the substrate sticking surfaces 621 to 624 by screws.
The main body of the curved display 3 shown in FIG. 6 is a non-display area excluding the display area of the panel 10, that is, the pressing plates 51 a and 51 b and the printed wiring boards 21 to 51 that exist from the inclined surface 60 a to the side surface of the holding base 60. 24, the surfaces of the flexible wiring boards 31 to 34, the cable wire groups 91 to 94, and the printed wiring board 25, the flexible wiring boards 35 to 38, and the cable wire group 95 existing on the upper surface of the holding base 60 are case (Shown).

In the curved display 3, the holding table 60 and the panel holding plate 61 are combined to hold the panel 10 and the printed wiring boards 21 to 25.
(Effect of curved display 3)
The curved display 3 also has a concave display surface and is suitable for incorporation in a corner near the driver's seat of a car. That is, when the curved display 3 is installed in a corner near the driver or passenger seat in the vehicle, the display surface is curved in a concave shape, so that a large space can be secured in front of the curved display 3, so that the driver and assistant A large space can be taken between the seats.

Therefore, the curved display 3 is suitable for use as a display for car navigation by mounting it on a dashboard near the driver's seat of a car, for example.
In the curved surface display 3, a touch panel may be provided on the panel 10 so that an input operation can be performed by touching the display surface. In that case, since it is a concave display surface, it is easier to place a hand compared to a flat display surface, and the effect of facilitating operation while viewing the screen is also obtained.

Therefore, it is possible to obtain excellent operability by installing the curved display 3 near the driver's seat.
(Regarding manufacturing on curved display 3)
The order of connection and installation of the panel 10 and the printed wiring boards 21 to 25 is preferably as follows.

Wiring may be performed after the panel 10 is installed on the inclined surface 60a, but when the panel 10 is attached to the inclined surface 60a, before the panel 10 is bent, the flexible wiring boards 31-38 and the printed wiring boards 21-25. If the cable wire groups 91 to 95 are connected, it is preferable in that the connection can be confirmed before the panel 10 is bent.
After embedding the panel 10 in the inclined surface 60a, the printed wiring boards 21 to 24 connected to the panel 10 are fixed by screwing them to the four corners of the board attaching surfaces 621 to 624.

When the printed wiring boards 21 to 24 are fixed from the printed wiring boards 22 and 23 located in the central portion, the flexible wiring boards 31 to 34 connected to the panel 10 are not pulled in a biased manner depending on the place. The panel 10 can be fixed, and the risk that the panel 10 is distorted and cracks is reduced.
After all the printed wiring boards 21 to 24 are fixed, the side portions of the panel 10 are pressed by the pressing plates 51a and 51b. The presser plates 51 a and 51 b are aluminum spring plates having a thickness of 0.5 mm and a width of 10 mm, and screws 52 are used to fix a total of three points at the end and two ends of each presser plate 51 a and 51 b with screws 52. Thus, the panel 10 is fixed on the inclined surface 60a.

After the printed wiring boards 21 to 24 and the panel 10 are fixed, the printed wiring board 25 is fixed to the upper surface of the holding table 60 with screws.
Next, the cable wire groups 91 to 95 connected to the respective printed wiring boards 21 to 25 through the connector 90 are brought together with the side surfaces of the holding table 60 so as to be concentrated on the back side of the panel 10 inside the holding table 60. And connected to a power source or a signal processing circuit installed inside the holding table 60.

[Embodiment 3]
FIGS. 7A and 7B are views of the main parts of the curved displays 4 and 5 according to the third embodiment as viewed from the vertical direction. The curved display 4 shown in FIG. It is convex and the curved display 5 shown in FIG. 7B has a concave display surface.
(Configuration of curved display 4)
The panel holding plate 41 in the curved display 4 shown in FIG. 7A is the same as the panel holding plate 41 of the curved display 1 described in the first embodiment.

On the other hand, the substrate holding plate 42 of the curved display 1 described in the first embodiment is composed of a plurality of flat-plate-like substrate sticking portions 421 to 424, but the substrate holding plate 42 of the curved display 4 according to the present embodiment. Is a curved plate, and its upper surface (substrate pasting surface 420) is also curved in a convex shape.
However, the upper surface (substrate pasting surface 420) of the substrate holding plate 42 is gently curved, and its radius of curvature R2 is set larger than the radius of curvature R1 of the panel pasting surface 410. For example, the curvature radius R1 is 300 mm and the curvature radius R2 is 700 mm.

The four printed wiring boards 21 to 24 are arranged side by side and attached with an adhesive on the gently sticking board attaching surface 420 as described above.
Although omitted in FIG. 7A, the curved display 4 includes a power supply circuit unit 26 that is a power source and a signal supply source beside the holding unit 40, similarly to the curved display 1 shown in FIG. 2. Both the holding unit 40 and the power supply circuit unit 26 are accommodated in the case 50.

(Effect of curved display 4)
Since the curved display 4 is also a thin and curved plate like the curved display 1, as described with reference to FIG. 11A in the first embodiment, the outer periphery of the columnar column 100 A display surface can be formed along the outer peripheral surface of the column 100 by being attached to the surface, and is suitable for displaying a convex image around the column 100.

The panel holding plate 41 in the curved display 4 can be said to be substantially planar because the substrate pasting surface 420 is a curved surface but has a smaller curvature than the panel pasting surface 410.
Therefore, as shown in FIG. 7A, when the printed wiring boards 21 to 24 are arranged on the board sticking surface 420 and pasted with an adhesive, each printed wiring board 21 to 24 remains flat. Since the gaps between the printed wiring boards 21 to 24 and the board pasting surface 420 are small, the printed wiring boards 21 to 24 can be firmly bonded while the stress generated on the printed wiring boards 21 to 24 is kept small.

Since the entire printed wiring boards 21 to 24 are fixed in a state of being gently curved along the curvature of the board pasting surface 420, that is, in a state of being curved in the same direction as the panel 10, each of the flexible wiring boards 31 to 34 is fixed. And the force locally applied to the panel 10 from the flexible wiring boards 31 to 34 is also alleviated.
Although the thickness of the printed wiring board is usually about 0.7 mm, if a thin one having a thickness of about 0.4 mm is used as the printed wiring boards 21 to 24, the printed wiring board is along the curve of the board attaching surface 420. The printed wiring boards 21 to 24 can be attached to the board attaching surface 420 with the 21 to 24 being curved.

In this case, since each printed wiring board 21 to 24 is also fixed in a state where it is bent in the same direction as the panel 10, the twist applied to each flexible wiring board 31 to 34 becomes smaller and locally on the panel 10. Such force is also reduced.
Accordingly, the lengths of the flexible wiring boards 31 to 34 can be set short, so that the effect of reducing the wiring resistance of the flexible wiring boards 31 to 34 and reducing the variation can be obtained.

(Configuration of curved display 5)
The panel holding plate 41 in the curved display 5 shown in FIG. 7B is the same as the panel holding plate 41 of the curved display 2 described in Embodiment 2, but the substrate holding plate 42 of the curved display 5 is It is a curved plate, and its upper surface (substrate pasting surface 420) is also curved concavely.

However, the upper surface (substrate pasting surface 420) of the substrate holding plate 42 is gently curved, and its curvature radius R4 is set larger than the curvature radius R3 of the panel pasting surface 410. For example, the curvature radius R3 is 500 mm, The radius of curvature R4 is 700 mm.
The four printed wiring boards 21 to 24 are arranged side by side and attached with an adhesive on the gently sticking board attaching surface 420 as described above.

Although omitted in FIG. 7B, similarly to the curved surface display 5 and the curved surface display 1 shown in FIG. 2, a power supply circuit unit 26 serving as a power source and a signal supply source is provided beside the holding unit 40. Both the holding portion 40 and the power supply circuit portion 26 are accommodated in the case 50.
(Effect of curved display 5)
Such a curved display 5 is also a thin plate having a thin display surface and a concave display surface, as in the curved display 2, and therefore, referring to FIGS. 11 (b) and 11 (c) in the second embodiment. As described, the curved display 5 can be installed in a state of being attached to the inner surface of the corner portion 200 and forming a concave display surface along the inner surface, or along the connecting curved surface 303 close to the ceiling surface 301.

The effect of the substrate sticking surface 420 in the curved display 5 is substantially the same as the effect of the substrate sticking surface 420 of the curved display 4.
That is, the panel holding plate 41 in the curved display 5 can also be said to be substantially planar because the substrate pasting surface 420 is a curved surface, but its curvature is smaller than that of the panel pasting surface 410. Therefore, FIG. As shown, when the printed wiring boards 21 to 24 are arranged on the board sticking surface 420 and attached with an adhesive, the printed wiring boards 21 to 24 are not fixed to each other even though the printed wiring boards 21 to 24 remain flat. Since the gap between the circuit board and the substrate sticking surface 420 is small, it can be firmly bonded while suppressing the stress generated in the printed wiring boards 21 to 24 small.

Since the entire printed wiring boards 21 to 24 are fixed in a state of being curved in the same direction as the panel 10 gently along the curvature of the board pasting surface 420, the twist of each flexible wiring board 31 to 34 is alleviated. The force locally applied to the panel 10 from the flexible wiring boards 31 to 34 is also alleviated.
Further, if a thin printed wiring board 21 to 24 having a thickness of about 0.4 mm is used, the printed wiring board 21 to 24 is printed on the board sticking surface 420 in a state where the printed wiring board 21 to 24 is bent along the curve of the board sticking surface 420. The wiring boards 21 to 24 can also be affixed, and the printed wiring boards 21 to 24 are fixed in a state of being bent in the same direction as the curvature of the panel 10, so that the twists applied to the flexible wiring boards 31 to 34 are more The force applied locally to the panel 10 is also reduced, and accordingly, the length of the flexible wiring boards 31 to 34 in the Y direction can be set short, so that the wiring resistance of the flexible wiring boards 31 to 34 is reduced and An effect of reducing variation in resistance can be obtained.

[Embodiment 4]
In the curved surface displays 6 and 7 shown in the present embodiment, a substrate pasting surface is provided on the opposite side of the holding unit 70 from the panel pasting surface on which the panel 10 is pasted.
(Configuration of curved display 6)
FIGS. 8A and 8B are perspective views showing the main part of the curved display 6, where FIG. 8A is a view from the front side, and FIG. 8B is a view from the back side.

Similar to the curved display 1 according to the first embodiment, the curved display 6 has a convex display surface.
In the holding part 40 of the curved display 1, a substrate holding plate 42 is provided so as to protrude downward from the panel holding plate 41, and the printed wiring boards 21 to 24 are also arranged below the panel 10, but the curved display 6 As shown in FIGS. 8A and 8B, in the holding portion 70, the curved plate-like holding portion 70 has a convexly curved surface as a panel sticking surface 710. A plurality of substrate pasting surfaces 721 to 724 are formed on the back surface of the surface 710, that is, the surface curved in a concave shape, along the curved side. And the printed wiring boards 21-24 are affixed on this board | substrate pasting surface 721-724.

Accordingly, the printed wiring boards 21 to 24 are arranged on the back side of the panel 10 along the side 10 a that is curved of the panel 10.
Each of the substrate pasting surfaces 721 to 724 is planar like the substrate pasting surfaces 421a to 424a of the curved display 1, and the substrate pasting surfaces adjacent to each other (the substrate pasting surface 721, the substrate pasting surface 722, the substrate pasting surface 722, and the like). The substrate pasting surface 723, the substrate pasting surface 723, and the substrate pasting surface 724) are bent along the curvature of the panel 10 to have a polygonal shape.

Such a holding part 70 can be produced by bending an aluminum plate having a thickness of 8 mm, for example, so that the panel attaching surface 710 becomes a convex surface having a curvature radius R400 and cutting the back side thereof. .
And although the panel 10 and the printed wiring boards 21-24 are connected by the flexible wiring boards 31-34, the flexible wiring boards 31-34 surround the circumference | surroundings of the curving edge 70a in the holding | maintenance part 70, It is bent by 180 °.

Here, since each flexible wiring board 31 to 34 has a length in the horizontal direction (X direction) of ¼ or less of the side 10a of the panel 110, even if it is bent by 180 °, there is little distortion.
Cable lines 91 to 94 are connected to the printed wiring boards 21 to 24 via connectors 90. The cable lines 91 to 94 extend along the back surface of the holding unit 70 and are connected to a power supply circuit unit (not shown). It is connected.

(Effect of curved display 6)
Since the curved display 6 is thin and has a convex display surface like the curved display 1, it is attached to the outer peripheral surface of the columnar column 100 as described with reference to FIG. 11A in the first embodiment. Thus, a display surface can be formed along the outer peripheral surface of the pillar 100, which is suitable for displaying a convex image around the pillar 100.

  Moreover, since each board sticking surface 721-724 is planar, it can fix on it, without curving the printed wiring boards 21-24, and the printed wiring boards 21-24 are adhesiveness on the board sticking faces 721-724. Can be fixed well. Further, when the flat printed wiring boards 21 to 24 are pasted on the board pasting surfaces 721 to 724, no excessive stress is generated on the printed wiring boards 21 to 24.

  Furthermore, the board pasting surfaces 721 to 724 are bent along the curve of the panel 10, and the panel 10 and the printed wiring boards 21 to 24 are connected by the flexible wiring boards 31 to 34. The twist applied to each flexible wiring board 31 to 34 is small, and therefore the force locally applied to the panel 10 from each flexible wiring board 31 to 34 is also reduced.

Further, in the curved display 6, since the holding unit 70 is provided with the substrate pasting surfaces 721 to 724 on the back side of the panel pasting surface 710, the panel holding is performed like the holding unit 40 of the curved display 1 of the first embodiment. There is no need to attach the substrate holding plate 42 to the plate 41.
Accordingly, since the board holding plate 42 is not provided, the number of parts can be reduced. Further, the vertical length of the apparatus can be shortened by an amount corresponding to the width (40 mm) of the substrate holding plate 42. That is, since the area of the non-display portion can be reduced by that amount, the frame can be narrowed and a small-sized display device can be realized even if the display area is the same.

When the place where the curved display 6 is installed is limited as in a room, the effect obtained by making the curved display 6 compact can be particularly great.
In addition, the fact that the frame can be narrowed can increase the screen size, widen the viewing angle, and improve the visibility even with the same device size.
In addition, since the frame by the non-display portion is narrow, the effect of curved display on the curved display and the effect of attracting human eyes when using signage can be more emphasized.

(Configuration of curved display 7)
FIG. 9 is a perspective view showing the main part of the curved display 7 as seen from the back side.
In the curved surface display 7, as in the curved surface display 6, the substrate pasting surfaces 721 to 724 are formed on the back side of the panel pasting surface 710 in the holding unit 70. Similar to the curved display 2, the display surface is concave.

As shown in FIG. 9, in the curved plate-shaped holding unit 70, the concavely curved surface is a panel pasting surface 710, and the curved surface is curved to the back of the panel pasting surface 710, that is, the convex curved surface. A plurality of substrate pasting surfaces 721 to 724 are formed along the side to be processed. And the printed wiring boards 21-24 are affixed on this board | substrate pasting surface 721-724.
Therefore, the printed wiring boards 21 to 24 are arranged on the back side of the panel 10 along the curved side of the panel 10.

Each of the substrate pasting surfaces 721 to 724 is planar, and is adjacent to each other (substrate pasting surface 721 and substrate pasting surface 722, substrate pasting surface 722 and substrate pasting surface 723, substrate pasting surface 723 and substrate pasting surface 724). ) Is bent along the curve of the panel 10 and has a polygonal shape.
And although the panel 10 and the printed wiring boards 21-24 are connected by the flexible wiring boards 31-34, the flexible wiring boards 31-34 surround the circumference | surroundings of the curving edge 70a in the holding | maintenance part 70, It is bent by 180 °.

Cable lines 91 to 94 are connected to the printed wiring boards 21 to 24 via connectors 90. The cable lines 91 to 94 extend along the back surface of the holding unit 70 and are connected to a power supply circuit unit (not shown). It is connected.
(Effect of curved display 7)
Since the curved display 7 is thin and the display surface is concave like the curved display 2, it is attached to the inner surface of the corner portion 200 as described with reference to FIGS. 11B and 11C in the second embodiment. Thus, the concave display surface can be formed along the inner surface, or the curved display 7 can be installed along the connecting curved surface 303 close to the ceiling surface 301.

  Moreover, since each board sticking surface 721-724 is planar, it can fix on it, without curving the printed wiring boards 21-24, and the printed wiring boards 21-24 are adhesiveness on the board sticking faces 721-724. Can be fixed well. Further, when the flat printed wiring boards 21 to 24 are pasted on the board pasting surfaces 721 to 724, no excessive stress is generated on the printed wiring boards 21 to 24.

  Furthermore, the board pasting surfaces 721 to 724 are bent along the curve of the panel 10, and the panel 10 and the printed wiring boards 21 to 24 are connected by the flexible wiring boards 31 to 34. The twist applied to each flexible wiring board 31 to 34 is small, and therefore the force locally applied to the panel 10 from each flexible wiring board 31 to 34 is also reduced.

  Further, in the curved display 7, since the substrate attaching surfaces 721 to 724 are provided on the back side of the panel attaching surface 710 in the holding unit 70, the panel holding is performed like the holding unit 40 of the curved display 2 according to the second embodiment. There is no need to attach the substrate holding plate 42 to the plate 41, and the number of components can be reduced. Further, since the vertical length of the device can be shortened by an amount corresponding to the width (40 mm) of the substrate holding plate 42, a small-size display device can be realized with a narrow frame.

When the installation location is limited as in a car, the effect obtained by making the curved display 6 compact can be particularly great.
The fact that the frame can be narrowed can increase the screen angle, widen the viewing angle, and improve the visibility even with the same device size. In addition, since the frame by the non-display portion is narrow, the effect of curved display on the curved display and the effect of attracting human eyes when using signage can be more emphasized.

[Embodiment 5]
FIGS. 10A and 10B are perspective views showing main parts of the curved surface displays 8 and 9 according to the fourth embodiment. Similarly to the fourth embodiment, the curved surface displays 8 and 9 are provided with a substrate pasting surface 720 on the opposite side of the holding unit 70 from the panel pasting surface 710 to which the panel 10 is pasted. These are gently curved surfaces as in the curved surface displays 4 and 5 of the third embodiment.

(Configuration of curved display 8)
As shown in FIG. 10A, the curved display 8 has a convex display surface.
The holding unit 70 in the curved display 8 is the same as the holding unit 70 in the curved display 6, but on the back side of the panel pasting surface 710, instead of the plurality of planar substrate pasting surfaces 721 to 724, a curved surface is provided. A shaped substrate pasting surface 720 is formed.

The substrate pasting surface 720 is curved in a convex shape like the substrate pasting surface 420 of the curved display 4 described in the third embodiment, and the curvature radius R2 of the substrate pasting surface 720 is larger than the curvature radius R1 of the panel pasting surface 710. Is also set larger. For example, the curvature radius R1 is 300 mm and the curvature radius R2 is 700 mm.
Four printed wiring boards 21 to 24 are arranged side by side and attached with an adhesive to the gently sticking board attaching surface 720 as described above. And although the panel 10 and the printed wiring boards 21-24 are connected by the flexible wiring boards 31-34, the flexible wiring boards 31-34 surround the circumference | surroundings of the curving edge 70a in the holding | maintenance part 70, It is bent by 180 °. Cable lines 91 to 94 are connected to the printed wiring boards 21 to 24 via connectors 90. The cable lines 91 to 94 extend along the back surface of the holding unit 70 and are connected to a power supply circuit unit (not shown). It is connected.

(Effect of curved display 8)
According to the curved display 8, the same effects as those of the curved display 6 of the fourth embodiment are obtained.
That is, since the curved display 8 is thin and the display surface is convex like the curved display 1, it is formed on the outer peripheral surface of the columnar column 100 as described with reference to FIG. The display surface can be formed along the outer peripheral surface of the pillar 100 by being attached, and is suitable for displaying a convex image around the pillar 100.

  Further, since the board pasting surface 720 is a gently curved surface, the printed wiring boards 21 to 24 can be fixed on the board pasting face 720 without curving or gently curving. Can be fixed with good adhesion, and the stress generated on the printed wiring boards 21 to 24 when the printed wiring boards 21 to 24 are attached to the board attaching surface 720 can be relaxed.

  Further, the printed wiring boards 21 to 24 are arranged in the same direction as the curve of the panel 10, and the panel 10 and the printed wiring boards 21 to 24 are connected by the flexible wiring boards 31 to 34. The twist applied to each flexible wiring board 31 to 34 is small, and therefore the force locally applied to the panel 10 from each flexible wiring board 31 to 34 is also reduced.

Further, in the curved display 8, since the board attaching surface 720 is provided on the back side of the panel attaching surface 710 in the holding unit 70, the number of parts can be reduced. In addition, since the area of the non-display portion can be reduced, a small display device can be realized with a narrow frame even if the display area is the same.
(Configuration of curved display 9)
The curved display 9 shown in FIG. 10B has a concave display surface.

The holding unit 70 in the curved display 9 is the same as the holding unit 70 of the curved display 7, but on the back side of the panel pasting surface 710, instead of the plurality of planar substrate pasting surfaces 721 to 724, a curved surface is provided. A shaped substrate pasting surface 720 is formed.
The curvature radius R4 (700 mm) of the substrate pasting surface 720 is set larger than the curvature radius R3 (R300 mm) of the panel pasting surface 710.

  Four printed wiring boards 21 to 24 are arranged side by side and attached with an adhesive to the gently sticking board attaching surface 720 as described above. And although the panel 10 and the printed wiring boards 21-24 are connected by the flexible wiring boards 31-34, the flexible wiring boards 31-34 surround the circumference | surroundings of the curving edge 70a in the holding | maintenance part 70, It is bent by 180 °. Cable lines 91 to 94 are connected to the printed wiring boards 21 to 24 via connectors 90. The cable lines 91 to 94 extend along the back surface of the holding unit 70 and are connected to a power supply circuit unit (not shown). It is connected.

(Effect of curved display 9)
According to the curved display 9, the same effect as that of the curved display 7 of the fourth embodiment is obtained.
That is, since the curved display 9 is thin and the display surface is concave like the curved display 2, the curved display 9 is formed on the inner surface of the corner portion 200 as described with reference to FIGS. The curved display 9 can be installed in a state of being attached and forming a concave display surface along the inner surface or along the connecting curved surface 303 close to the ceiling surface 301.

Further, since the board pasting surface 720 is a gently curved surface, the printed wiring boards 21 to 24 can be fixed on the board pasting face without curving or gently curving, and the printed wiring boards 21 to 24 can be placed on the board pasting face. It can be fixed with good adhesion, and stress generated on the printed wiring boards 21 to 24 when the printed wiring boards 21 to 24 are attached to the board attaching surface 720 can be relaxed.
Further, the printed wiring boards 21 to 24 are arranged in the same direction as the curve of the panel 10, and the panel 10 and the printed wiring boards 21 to 24 are connected by the flexible wiring boards 31 to 34. The twist applied to each flexible wiring board 31 to 34 is small, and therefore the force locally applied to the panel 10 from each flexible wiring board 31 to 34 is also reduced.

Furthermore, in the curved display 9, since the board attaching surface 720 is provided on the back side of the panel attaching surface 710 in the holding unit 70, the number of parts can be reduced. In addition, since the area of the non-display portion can be reduced, a small display device can be realized with a narrow frame even if the display area is the same.
[Variations etc.]
In the above embodiment, an example in which the panel 10 is an organic EL panel has been described. However, any panel that can be bent, such as a liquid crystal panel, can be similarly implemented.

  In the above embodiment, four printed wiring boards are arranged along the curved side 10a of the panel 10. However, the number of printed wiring boards to be arranged may be two or more, or three or five. That's all. However, as the number increases, the length of the printed wiring board per sheet becomes shorter. Therefore, the minimum necessary length can be secured for the printed wiring board determined by the length of the connector 90 attached to the printed wiring board. It is necessary to set the number of sheets as follows.

  In the said embodiment, although the horizontal sides 10a and 10b which are the long sides in the panel 10 curved, the mounting surface which mounts the printed wiring boards 21-24 connected to the horizontal sides 10a and 10b side was devised, Even when the short side of the rectangular panel is curved, it can be similarly implemented by applying it to the mounting surface on which the printed wiring board disposed along the short side is mounted.

  The curved display according to the present invention is suitable as a curved display that is installed on the outer peripheral surface of a column, a corner portion of a wall, a corner portion in a vehicle, etc., and displays a curved surface. Useful as.

DESCRIPTION OF SYMBOLS 1-9 Curved display 10 Panel 10a, 10b Horizontal side 10c, 10d Vertical side 11 Scan line 12 Data line 13 Power line 15 Element board 16 Light emitting layer 17 Sealing layer 21-25 Printed wiring board 26 Power supply circuit part 31-38 Flexible Wiring board 40 Holding portion 41 Panel holding plate 42 Substrate holding plate 43 Substrate pasting surface 50 Case 51a, 51b Holding plate 60 Holding base 60a Inclined surface 61 Panel holding plate 70 Holding portion 70a Edge 90 Connector 91-95 Cable line group 100 Column 200 Corner portion 301 Ceiling surface 302 Wall surface 303 Curved surface 410 Panel pasting surface 420 Substrate pasting surface 421-424 Substrate pasting portion 421a-424a Substrate pasting surface 621-624 Substrate pasting surface 720 Substrate pasting surface 721-724 Substrate pasting surface

Claims (6)

A panel portion in which a plurality of pixels arranged in a two-dimensional shape on a curved substrate, and a plurality of wirings connected to electrodes of the plurality of pixels are disposed,
A plurality of printed wiring boards that are arranged on the curved side of the panel portion and supply at least one of a signal and power to the plurality of wirings;
A plurality of flexible wiring boards connecting the plurality of wirings and the printed wiring board;
In a curved display comprising the panel unit and a holding unit for holding the printed wiring board,
The holding part is
A panel pasting surface that curves in accordance with the curvature of the panel portion;
A plurality of substrate application surfaces to which the plurality of printed wiring boards are attached;
Each of the substrate pasting surfaces is a flat surface, and the substrate pasting surfaces adjacent to each other are curved along the direction in which the panel pasting surface is curved. In the holding part,
The portion where the panel pasting surface is formed is a curved plate,
The curved display according to claim 1, wherein the portion on which the substrate pasting surface is formed is a plate body bent into a polygonal shape. The holding portion is made of a curved plate member,
The plurality of substrate pasting surfaces are formed on the back side of the panel pasting surface,
Each of the plurality of flexible wiring boards is
The curved display according to claim 1, wherein the curved display is extended from the panel, bent so as to surround an edge of the support base, and connected to each of the plurality of printed wiring boards. A panel portion in which a plurality of pixels arranged in a two-dimensional shape on a curved substrate, and a plurality of wirings connected to electrodes of the plurality of pixels are disposed,
A plurality of printed wiring boards that are arranged on the curved side of the panel portion and supply at least one of a signal and power to the plurality of wirings;
A plurality of flexible wiring boards connecting the plurality of wirings and the printed wiring board;
In a curved display comprising the panel unit and a holding unit for holding the printed wiring board,
The holding part is
A panel pasting surface that curves in accordance with the curvature of the panel portion;
A substrate pasting surface to which the plurality of printed wiring boards are pasted,
The substrate pasting surface is a curved display in which the panel pasting surface is curved with a smaller curvature than the panel pasting surface along the direction in which the panel pasting surface is curved. In the holding part,
The portion where the panel pasting surface is formed and the portion where the substrate pasting surface is formed,
The curved display according to claim 4, wherein each curved display is formed of a curved plate. The holding portion is made of a curved plate member,
The substrate pasting surface is formed on the back side of the panel pasting surface,
Each of the plurality of flexible wiring boards is
The curved display according to claim 4, wherein the curved display extends from the panel, is bent so as to surround an edge of the support base, and is connected to each of the plurality of printed wiring boards.

Images