JP5611018B2 - Display device - Google Patents

Description

  The present invention relates to a display device including a display panel such as a touch panel or a liquid crystal panel.

  2. Description of the Related Art Conventionally, an image forming apparatus includes a display device that accepts input operations for various settings such as image forming process condition settings and start instructions. The display device supports a display panel such as a liquid crystal panel and a touch panel, a controller substrate of the display panel, and wiring with a support plate. When the display panel receives an impact from the outside, the display surface bends and the image is disturbed. Some display devices use an elastic member as a support member of the display panel in order to prevent deflection of the display surface. (See Patent Document 1).

  The display device described in Patent Literature 1 includes a transparent display plate provided on the display surface of the display panel, and a support frame that is supported from the back side of the display panel. Between the display plate and the display panel, the display panel An elastic member is interposed between the support frame and the support frame. In this display device, the elastic member absorbs an external impact on the display panel, thereby reducing the deflection generated in the display panel. In the display device, a substrate is attached to a position adjacent to the display panel, and the display panel and the substrate are connected by TAB (Tape Automated Bonding).

JP-A-9-73072

  However, since the display device described in Patent Document 1 arranges the elastic member outside the display area of the display panel, the display area of the display panel and the outside of the display area must be identified in advance. Further, in the display device, if the length of the TAB is longer than the distance between the substrate and the display panel, the TAB is bent and cannot be positioned at a predetermined position.

  SUMMARY OF THE INVENTION Accordingly, the present invention provides a display panel support plate and a display device that can position and support components such as a substrate and wiring and a support member while reducing the deflection of the display panel.

The support plate included in the display device of the present invention supports a flexible planar sheet body on one surface and arranges components on the other surface. The support plate includes a plurality of recesses. Each of the plurality of recesses protrudes from one surface toward the other surface. The shape of the recesses of the plurality of recesses is the same as the shape of the elastic member that supports the sheet body, and at least two protrusions of the plurality of recesses are arranged separated by a distance between two opposing sides of the component.

  In this configuration, the support plate has a plurality of recesses. The plurality of recesses protrude from one surface toward the other surface. That is, the plurality of recesses are dents when viewed from one surface and projecting portions when viewed from the other surface. An elastic member that supports the sheet body is accommodated in the recess viewed from one surface. Moreover, two protrusion parts are used for positioning of components by arrange | positioning components between the protrusion parts seen from the other surface.

  A configuration in which a hole into which a regulating member that regulates the movement of the component in the direction orthogonal to the support plate is fitted is formed at a position adjacent to the plurality of recesses.

  In this configuration, a hole into which the restriction member is fitted is formed at a position adjacent to the plurality of recesses. This is because the vicinity of the plurality of recesses is stronger than the plane.

  As a result, when the regulating member is fitted into the hole, the regulating member can be easily fitted into the hole without the support plate being bent.

  The display device includes the above-described support plate, a support frame, an elastic member, a sheet controller board, a component, and a restriction member. The support plate supports the back side of the sheet body that is a display panel. A support frame arrange | positions a sheet | seat body between support plates, and supports the periphery of a sheet | seat body. The elastic member is housed in each of the plurality of concave portions of the support plate, and presses the back surface of the sheet body. The controller board of the sheet body is disposed on the other surface of the support plate. The component is a component arranged on the other surface of the support plate and is a flat cable connected to the controller board. The restricting member restricts movement of the component in the direction orthogonal to the support plate.

  In this configuration, the above-described support plate is applied to the display device. The support plate supports a display panel, which is a sheet body, on one surface with an elastic member interposed therebetween, and a flat cable connected to the controller board of the display panel is disposed on the other surface. A support frame arrange | positions a display panel between support plates, and supports the periphery of a display panel. The flat cable is positioned by at least two protrusions among the plurality of concave portions of the support plate, and the movement in the direction orthogonal to the support plate is restricted by the restriction member.

  Accordingly, the display device supports the display panel by interposing the elastic member on the support plate. Therefore, the display panel can prevent the display panel from being bent by absorbing the impact received from the outside by the display panel. . Furthermore, the display device can position the elastic member and the flat cable by housing the elastic member in the recess of the recess and disposing the flat cable between the protrusions of the at least two recesses. Moreover, the display apparatus can arrange | position the cable of the back side of a display panel by restrict | limiting the movement of the flat cable in the direction orthogonal to a support plate.

  It is preferable that the structure further includes an insulating member having a T-shaped tip. In this case, the restricting member restricts the movement of the insulating member and the component in the direction orthogonal to the support plate.

  In this configuration, the restricting member attaches the insulating member and the component to the support plate. The tip of the insulating member is formed in a T shape.

  Thereby, the display device can prevent the insulating member from falling off the support plate.

  The support plate according to the present invention can position and support components such as a substrate and wiring, and a support member, and reduce the deflection of the display panel.

1 is a diagram illustrating a schematic configuration of an image forming apparatus. It is an exploded view of a display apparatus. (A) is a rear view of a support plate, (B) is an A-A 'cross-sectional view of (A). It is a top view of a support plate. It is an assembly drawing of a display apparatus. It is sectional drawing of a display apparatus. It is a rear view of a display apparatus.

  As shown in FIG. 1, the image forming apparatus 100 forms a multi-color or single-color image on a predetermined sheet based on image data read from a document. The image forming apparatus 100 includes an input device (not shown), an image reading unit 120, an image forming unit 110, and a paper feeding unit 130.

  The image reading unit 120 includes a scanner unit 70, a document table 71, and an automatic document feeder 72, and reads images on both the front and back sides of the document by either the document reversal reading method or the duplex simultaneous reading method. The scanner unit 70 is a reduction optical system sensor, for example, and can read an image with high accuracy. The document table 71 is made of hard plate glass.

  The automatic document feeder 72 is rotatably supported on the back side of the upper surface of the document table 71. When an operator manually places a document on the document table 71, the automatic document feeder 72 is rotated to open and close the upper surface of the document table 71.

  The automatic document feeder 72 includes a document tray 73 that stores documents before image reading, and a paper discharge tray 74 that stores documents after image reading. The paper discharge tray 74 is disposed below the document tray 73 with a predetermined space between the bottom surface of the document tray 73. Inside the automatic document feeder 72, a conveyance path 75 is formed between the document tray 73 and the paper discharge tray 74.

  The image forming unit 110 includes an intermediate transfer belt unit 40, an image forming station 30A to an image forming station 30D, a secondary transfer unit 51, an exposure unit 52, and a fixing unit 53. In the intermediate transfer belt unit 40, an intermediate transfer belt 41, which is an endless belt, is rotatably stretched by a driving roller 42, a driven roller 43, and the like.

  The image forming station 30A to the image forming station 30D perform electrophotographic image formation using developers of black, cyan, magenta, and yellow, respectively. For example, in the image forming station 30A, a charging device 32A, a developing device 33A, and a primary transfer device 34A are arranged around the photosensitive drum 31A. The image forming station 30B to the image forming station 30D are configured in the same manner as the image forming station 30A.

  The exposure unit 52 drives a semiconductor laser (not shown) based on the image data of each color of black, cyan, magenta, and yellow read by the image reading unit 120, and outputs the laser light of each color from the image forming station 30B to the image forming station 30B. The light is distributed to the station 30D. The exposure unit 52 may use a light source other than a semiconductor laser such as an LED array driven based on image data.

  For example, in the image forming station 30A, the peripheral surface of the photosensitive drum 31A is uniformly charged by the charger 32A, and then exposed with laser light based on black image data distributed from the exposure unit 52. As a result, an electrostatic latent image based on the black image data is formed on the peripheral surface of the photosensitive drum 31A. Next, black developer is supplied from the developing device 33A to the peripheral surface of the photosensitive drum 31A, and the electrostatic latent image is visualized as a black toner image. The toner image formed on the peripheral surface of the photosensitive drum 31A is transferred to the surface of the intermediate transfer belt 41 by the primary transfer unit 34A.

  At the time of color image formation, the image forming station 30B to the image forming station 30D perform the same processing as the image forming station 30A for each color of cyan, magenta, and yellow. Black, cyan, magenta and yellow toner images are superimposed on the surface of the intermediate transfer belt 41.

  The secondary transfer unit 51 transfers the toner image carried on the surface of the intermediate transfer belt 41 to a sheet. The fixing unit 53 heats and pressurizes the paper on which the toner image is transferred, and fixes the toner image on the paper.

  The paper feed unit 130 includes a paper feed cassette 81 and a manual feed tray 82. The paper feed cassette 81 stores a plurality of sheets of sizes and types that are relatively frequently used. On the manual feed tray 82, sheets of a size and type that are relatively infrequently used are placed. A paper conveyance path 83 is formed from the paper supply unit 130 to the paper discharge unit 90.

  The input device 20 has a display device 201 disposed at the top and a keyboard (not shown) disposed at the bottom. First, each member constituting the display device 201 will be described. Next, a method for assembling the display device 201 will be described. As shown in FIG. 2, the display device 201 includes a display panel 21, a support frame 22, an elastic member 23, a substrate 24, a cable 25, a regulation member 26, and a support plate 27.

  The display panel 21 is a flexible flat sheet body such as a liquid crystal panel or a touch panel.

  The support frame 22 includes a frame-shaped main body 221 having an opening, and a peripheral edge 222 formed by bending the peripheral edge of the main body 221 at a right angle. The peripheral portion 222 has two key-like engaging portions 223 formed on each side. Each of the engaging portions 223 protrudes inwardly in parallel with the main body portion 221, and the tip is bent toward the main body portion 221.

  The support frame 22 is made of PC + ABS (polycarbonate + acrylonitrile butadiene styrene) resin. PC + ABS resin has moldability, mechanical properties, impact resistance, and heat resistance.

  The elastic member 23 is a urethane foam having a rectangular parallelepiped shape having a length of 9 mm, a width of 14 mm, and a height of 4 mm. The elastic member 23 has a double-sided tape bonded to one side.

  The substrate 24 is a controller substrate of the display panel 21, and various circuits are arranged thereon. The substrate 24 includes a connection terminal 241 connected to the cable 25.

  The cable 25 is a flat cable including a connection terminal 251 connected to the substrate 24.

  The regulating member 26 includes a flat plate-like main body portion 261 and attachment portions 262A and 262B formed at the front end of the main body portion 261 in the longitudinal direction. The main body 261 is curved when an urging force is applied in the longitudinal direction. The attachment portions 262A and 262B are bent at the tips from the longitudinal direction of the main body portion 261 to the outside. The attachment portions 262A and 262B engage with the attachment holes 274A and 274B of the support plate 27, respectively. At this time, the regulating member 26 is attached to the support plate 27 with a gap provided between the main body 261 and the back surface of the support plate 27.

  The restricting member 26 is made of PA (polyamide) 66 resin. PA66 resin has both heat resistance and mechanical strength.

  As shown in FIGS. 3 and 4, the support plate 27 is formed with a mounting portion 272 </ b> A to 272 </ b> D, a plurality of recesses 273 </ b> A to 273 </ b> G, and mounting holes 274 </ b> A and 274 </ b> B on a plate-like main body portion 271 having a thickness of 2 mm. .

  Each of the attachment portions 272A to 272D has a cylindrical shape that protrudes 5 mm toward the back side. The substrate 24 is screwed to each of the attachment portions 272A to 272D.

  The plurality of recesses 273A to 273G are rectangular recesses that protrude from the upper surface toward the rear surface and are slightly larger than 9 mm in length, 14 mm in width, and 1 mm in depth. The shape of 9 mm in length and 14 mm in width matches the size of the elastic member 23, and the depth of 1 mm is half the thickness (1 mm) of the main body 271. That is, each of the plurality of concave portions 273A to 273G is a concave portion that is recessed by 1 mm when viewed from the top surface, and is a convex portion that protrudes by 1 mm when viewed from the rear surface. The thickness of the plurality of concave portions 273A to 273G is the same as the thickness of the main body portion 271 (see FIG. 3B).

  Further, the recesses 273A and 273B are formed apart by a length in the short direction of the cable 25. For this reason, the recesses 273A and 273B can be used for positioning the cable 25 in the short direction.

  The attachment holes 274A and 274B are formed at positions adjacent to the recesses 273A and 273B, respectively. The mounting holes 274A and 274B are composed of a hole portion and a stop portion. The stop portion is formed so as to be recessed by a depth half the thickness (1 mm) of the main body portion 271 on the surface where the recesses 273A to 273G are recessed. The mounting holes 274A and 274B are formed apart by a distance shorter than the distance in the longitudinal direction of the main body 261 of the regulating member 26. The attachment holes 274A and 274B engage with the attachment portions 262A and 262B of the restriction member 26, respectively. At this time, the mounting portions 262A and 262B of the regulating member 26 are fitted into the holes of the mounting holes 274A and 274B. The tips of the mounting portions 262A and 262B are fixed to the stop portions of the mounting holes 274A and 274B.

  The support plate 27 is made of PC + ABS resin and is made of the same material as the support frame 22.

  Next, a method for assembling the display device 201 will be described.

  The elastic member 23 is bonded to the plurality of recesses 273A to 273G formed on the upper surface side of the support plate 27 with a double-sided tape.

  As shown in FIG. 5A, the connection terminal 251 of the cable 25 is connected to the connection terminal 241 of the substrate 24. The board | substrate 24 is screwed to the attaching parts 272A-272D formed in the back side of the support plate 27. FIG. At this time, the substrate 24 is attached with the connection terminal 241 facing the attachment holes 274A and 274B.

  The cable 25 connected to the substrate 24 is disposed between the recesses 273A and 273B protruding to the back side of the support plate 27. Then, the mounting portions 262A and 262B of the restriction member 26 are engaged with the mounting holes 274A and 274B of the support plate 27, respectively. Since the recesses 273A and 273B are formed in the vicinity of the mounting holes 274A and 274B to which the restriction member 26 is attached, the strength is higher than that of the flat plate. For this reason, the regulating member 26 can be easily attached to the support plate 27 without the support plate 27 being bent. In addition, since the cable 25 is fixed to the support plate 27 by the restriction member 26, the movement of the cable 25 in the direction orthogonal to the support plate 27 can be restricted.

  As shown in FIG. 5B, the display panel 21 is attached to the support frame 22 with the display surface of the display panel 21 facing the opening of the main body 221. Then, the engaging portion 223 of the support frame 22 to which the display panel 21 is attached is engaged from the upper surface side of the support plate 27.

  As shown in FIG. 6, in the display device 201, the distance H1 between the mutually opposing surfaces of the support frame 22 and the support plate 27 is 5.9 mm. The support plate 27 has a thickness H2 of 2 mm and a recess H3 of the recesses 273A to 273B of 1 mm. Since the display panel 21 is provided with a circuit at the peripheral portion, the peripheral height H4 is 5.2 mm, the peripheral edge is higher than the center, and the difference H5 is 1.5 mm. From the above, it can be seen that the distance H6 between the opposing surfaces of the recess 273A of the support plate 27 and the display panel 21 is about 3 mm.

  A 4 mm elastic member 23 is disposed in the recess 273 </ b> A of the support plate 27. For this reason, the back surface of the display panel 21 is pressed from the elastic member 23 bonded to the support plate 27 and supported by the elastic member 23. Thereby, even if the display panel 21 receives an impact on the surface from the outside, the display panel 21 can prevent the surface from being bent and can reduce the disturbance of the image.

  Further, since the support plate 27 adheres the elastic member 23 to the recesses of the recesses 273A to 273G, the support panel 27 can support the display panel 21 using the thicker elastic member 23 that adheres to the main body portion 271 of the support plate 27. it can. Thereby, the elastic member 23 can absorb the impact from the outside to the display panel 21 more by the thickness.

  Further, the support plate 27 can position the cable 25 using the recesses 273A and 273B among the protrusions of the recesses 273A to 273G. Since the protrusions of the recesses 273A to 273G are closer to the support plate 27 than the substrate 24, the direction orthogonal to the support plate is not increased.

  The distance H7 between the surfaces of the regulating member 26 and the support plate 27 facing each other is 1.4 mm. The cable 25 has a thickness H8 of 0.8 mm. As described above, the restricting member 26 restricts the movement of the cable 25 in the direction orthogonal to the support plate 27.

  As shown in FIG. 7, the insulating member 28 has a T-shaped tip 281. The support plate 27, the cable 25, and the insulating member 28 are arranged in this order, and the cable 25 and the insulating member 28 are fixed to the support plate 27 by the restriction member 26. As a result, the insulating member 28 does not come off the regulating member 26 because the tip 281 has a T-shaped shape.

  In the above-described embodiment, the support plate 27 uses the recesses 273A and 273B to position the cable 25. However, the substrate 24 may be positioned or other components may be positioned. Further, the cable 25 may not be a flat cable.

  In the above-described embodiment, the display device 201 included in the image forming apparatus 100 has been described as an example. However, a display device incorporated in various devices may be used. Moreover, the display apparatus 201 provided with the external input terminal may be sufficient. In addition, the sheet body is not limited to the display panel, and may be a flexible sheet body, and thus may be an apparatus that supports the sheet body.

  The above description of the embodiments is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

201 ... Display device 21 ... Display panel 22 ... Support frame 23 ... Elastic member 24 ... Substrate 25 ... Cable 26 ... Restriction member 27 ... Support plates 273A-273G ... Recess 274A, 274B ... Mounting hole 28 ... Insulating member 281 ... Tip

Claims (3)

A support plate that supports the back side of a flexible flat sheet body , which is a display panel, on one side and places components on the other side, each from the one side to the other side A plurality of recesses projecting toward the surface, and the shape of the recesses of the plurality of recesses is equal to the shape of the elastic member supporting the sheet body, and at least two of the plurality of recesses are A support plate that is spaced apart by a distance between two opposing sides;
A support frame for disposing the sheet body between the support plate and supporting a peripheral edge of the sheet body;
An elastic member that is housed in each of the plurality of recesses of the support plate and presses the back surface of the sheet body;
A controller board of the sheet body disposed on the other surface of the support plate;
A component disposed on the other surface of the support plate, which is a flat cable connected to the controller board;
And a regulating member that regulates movement of the component in a direction orthogonal to the support plate. The support plate is in position adjacent to the plurality of recesses, the display device according to claim 1, holes fitted into a regulating member for regulating the movement of the component in a direction perpendicular to the support plate is formed. Further comprising an insulating member having a T-shaped tip,
The display device according to claim 1 , wherein the restricting member restricts movement of the insulating member and the component in a direction orthogonal to the support plate.

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