JP2011081069A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure that maintains a plain state of display part satisfactory, thereby improving visibility of a display screen when the flexible display part is spread out. <P>SOLUTION: The display device 30 includes: a first casing 31 and second casing 32; the flexible display part 33 that is wound on the first casing 31 in a roll and housed and pulled out of the first casing 31 by separating the first casing 31 and second casing 32 from each other; and a flexible structure body 36 that supports the first casing 31 and second casing 32 in parallel with each other, and flexibly operates in the directions where the first casing 31 and second casing 32 are approached and separated. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display device. More specifically, the present invention relates to a display device including a flexible display portion.

  As a next-generation display device, research on a display device having a display portion having a feature such as “thin, light, and bend” has been actively conducted in recent years (for example, Patent Document 1, Patent Document 2, Non-Patent Document 1, (Refer nonpatent literature 2). In the future, this type of display device will take advantage of the bending properties (flexibility) of the display unit, and the display unit will be stored in a roll shape. Usage is assumed.

Japanese translation of PCT publication No. 2002-511606 Special table 2008-530611 gazette

M.Mizukami, N.Hirohata, 10 others, “Feexible AM OLED Panel Driven by Bottom-Contact OTFTs”, IEEE ELECTRON DEVICE LETTERS, APRIL 2006, VOL.27, NO.4, p.249-251 S.E.Burns, W.Reeves, 23 others, `` A Flexible Plastic SVGA e-Paper Display '', SID 06 DIGEST, SID, 2006, p.74-76

  However, the conventional display device has a problem that it is difficult to maintain a flat state of the display unit because it has flexibility when the display unit is expanded during use.

  An object of the present invention is to provide a mechanism capable of improving the visibility of a display screen while maintaining a flat state of a display unit when a flexible display unit is developed.

  A display device according to the present invention is a display device including a flexible display unit, and includes at least one casing, and the display unit is accommodated in at least one of the casings. In addition, when the display unit is pulled out from the inside of the casing, the display section includes an expansion / contraction structure that extends and contracts.

  In the display device according to the present invention, when the display unit is pulled out from the inside of the casing, the expansion / contraction structure performs an expansion / contraction operation, and the casing is supported by the expansion / contraction structure. For this reason, when the display unit is pulled out from the inside of the housing and deployed, the display unit can be maintained in a flat state.

  ADVANTAGE OF THE INVENTION According to this invention, when the display part which has flexibility is expand | deployed, the planar state of a display part can be kept favorable and the visibility of a display screen can be improved.

It is a sectional side view which shows the structure of the display part of an electrophoretic display device as an example of the display apparatus with which this invention is applied. It is a figure explaining an example of the manufacturing method of a display part. It is a schematic diagram which shows the main structures of the display apparatus which concerns on the 1st Embodiment of this invention. It is a figure which shows the state which extended the expansion-contraction structure part employ | adopted in the 1st Embodiment of this invention. It is a figure which shows the state which contracted the expansion-contraction structure part employ | adopted in the 1st Embodiment of this invention. It is a figure explaining the structure of the arm which comprises the expansion-contraction structure part employ | adopted in the 1st Embodiment of this invention. It is FIG. (1) explaining the connection structure of a housing | casing and an arm. It is FIG. (2) explaining the connection structure of a housing | casing and an arm. FIG. 6 is a diagram (part 1) for explaining the operation of the display device according to the first embodiment of the invention; FIG. 7 is a diagram (part 2) for explaining the operation of the display device according to the first embodiment of the present invention; It is the schematic which shows the structure of the display apparatus which concerns on the 2nd Embodiment of this invention.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the technical scope of the present invention is not limited to the embodiments described below, and various modifications and improvements have been made within the scope of deriving specific effects obtained by the constituent requirements of the invention and combinations thereof. Including form.

Embodiments of the present invention will be described in the following order.
1. 1. Configuration of display device 1. First embodiment Second embodiment

<1. Configuration of display device>
FIG. 1 is a side sectional view showing a configuration of a display portion of an electrophoretic display device as an example of a display device to which the present invention is applied. The electrophoretic display device includes a flexible display unit 10 using a microcapsule type electrophoretic display element. The display unit 10 is configured using a plastic transparent substrate 11 and a plastic counter substrate 12. As the counter substrate 12 disposed on the side opposite to the display surface formed by the transparent substrate 11, a substrate that does not transmit light (a light-blocking substrate) is used. The counter substrate 12 may be one in which the substrate material itself has light shielding properties, or may be one in which a light shielding film is formed on at least one surface of a light transmitting substrate. The transparent substrate 11 and the counter substrate 12 are arranged to face each other with a predetermined gap. A large number of microcapsules 15 including a dispersion medium 13 and a plurality of electrophoretic particles 14 are arranged in the gap between the transparent substrate 1 and the counter substrate 12.

  On the inner surface of the transparent substrate 11, transparent electrodes 16 are formed in a stripe pattern. Similarly, the counter electrodes 17 are also formed on the inner surface of the counter substrate 12 in a stripe pattern. The transparent electrode 16 and the counter electrode 17 are arranged so as to be orthogonal to each other when seen in a plan view, thereby enabling driving in a simple matrix system.

  A diffusion film 18 is attached to the outer surface of the transparent substrate 11. The diffusion film 18 causes scattering when light passes through the diffusion film 18, thereby making the white display clearer.

  Of the dispersion medium 13 and the electrophoretic particles 14 encapsulated in the microcapsule 15, the dispersion medium 13 is colored black, for example, by mixing 3 to 4 types of colorants of different colors. The electrophoretic particles 14 are composed of white or milky white resin dielectric particles, and are charged so as to have a positive charge or a negative charge. The dispersion medium 13 and the electrophoretic particles 14 are encapsulated in each of a large number of microcapsules 15 in a state where the electrophoretic particles 14 are dispersed in the dispersion medium 13. The microcapsules 15 are laid in one layer in a close-packed manner in the gap between the transparent electrode 16 of the transparent substrate 11 and the counter electrode 17 of the counter substrate 12. The microcapsule 15 is fixed between the substrates 11 and 12 by a transparent adhesive layer 19 so as not to move in the gap.

  Here, a method for manufacturing the display unit 10 of the electrophoretic display device will be briefly described. First, the microcapsule 15 including the dispersion medium 13 and the electrophoretic particles 14 is produced. Next, the microcapsules 15 are spread on the counter substrate 12 in one layer. At that time, as shown in FIG. 2, an adhesive layer 20 made of an adhesive before curing (or a semi-cured state) is formed on the counter electrode (not shown in FIG. 2) on the inner surface of the counter substrate 12 in advance. Then, a doctor blade 21 and an adjustment plate 22 are disposed on the adhesive layer 20. At this time, the adjusting plate 22 is disposed on the front side of the doctor blade 21. The doctor blade 21 is arranged so that the gap between the bottom surface and the adhesive layer 20 is approximately the particle size of the microcapsule 15. The adjustment plate 22 is arranged at a certain interval such that the microcapsule 15 enters between the front surface of the doctor blade 21. Further, the adjustment plate 22 is arranged so that the gap between the bottom surface and the adhesive layer 20 is narrower than the particle size of the microcapsule 15.

  It supplies so that the microcapsule 15 may be filled between the doctor blade 21 arrange | positioned in this way and the adjustment board 22, and also the doctor blade 21 and the adjustment board 22 are moved to the arrow direction of FIG. Thereby, the microcapsules 15 are spread on the counter substrate 12 in one layer. At this time, since the adhesive layer 20 is formed on the counter substrate 12 in advance, the movement of the microcapsules 15 spread on the substrate is regulated by the adhesive action of the adhesive layer 20. Therefore, the microcapsule 15 is held in a state where it is spread with one layer.

  When the microcapsules 15 are spread on the counter substrate 12 in one layer in this way, the transparent substrate 11 is placed with the microcapsules 15 being sandwiched, and a transparent adhesive is placed between the transparent substrate 11 and the counter substrate 12. Fill and cure to form the adhesive layer 19. The adhesive for forming the adhesive layer 19 is not particularly limited as long as it is transparent, and various adhesives such as methacrylic acid type can be used. Moreover, about the adhesive agent which forms the contact bonding layer 20 hold | maintained in the state where the microcapsule 15 was spread, it may function also as a binder etc., For example, a vinyl chloride, vinyl acetate, a polyurethane etc. can be used.

  When the electrophoretic display device having the above-described configuration is driven, different voltages are applied between the transparent electrode 16 and the counter electrode 17 in the display area of the display unit 10 between the portion that performs white display and the portion that performs black display. Apply. That is, in the portion that performs white display, a voltage corresponding to white display is applied between the transparent electrode 16 and the counter electrode 17. Then, in each microcapsule 25, the electrophoretic particles 14 are shifted to the transparent substrate 11 side. In this state, light incident from the outside passes through the diffusion film 18, the transparent substrate 11, and the transparent electrode 16 and reaches the microcapsule 15. Further, this light is reflected by the electrophoretic particles 14 included in the microcoupler cell 15, passes through the transparent electrode 16, the transparent substrate 11, and the diffusion film 18 again and is emitted to the outside. For this reason, when viewed from the outside of the transparent substrate 11, the state is displayed in white.

  Further, in a portion that performs black display, a voltage corresponding to black display is applied between the transparent electrode 16 and the counter electrode 17. Then, in each microcapsule 25, the electrophoretic particles 14 are shifted to the counter substrate 12 side. In this state, light incident from the outside passes through the diffusion film 18, the transparent substrate 11, and the transparent electrode 16 and reaches the microcapsule 15. Further, this light is absorbed by the dispersion medium 13 included in the microcapsule 15. For this reason, when it sees from the outer side of the transparent substrate 11, it will be in the state displayed in black.

  Note that although the flexible display unit 10 is configured using a microcapsule-type electrophoretic display element here, the present invention is not limited to this. For example, the present invention includes other display elements such as organic EL (Electro Luminescence) display elements, powder transfer type display elements using charged toner or electropowder fluid, liquid crystal display elements, electrowetting type display elements, etc. It is applicable also to the display apparatus which comprised the display part which has flexibility using.

  Further, the substrate of the display portion is not limited to plastic, and any material that can impart desired flexibility to the display portion may be used. For example, the substrate on the side opposite to the display surface (counter substrate) may be configured using a thin metal sheet. As the plastic substrate, a plastic sheet such as polyethersulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polyimide (PI), liquid crystal polymer, or the like can be used. . Moreover, as a metal board | substrate, metal sheets, such as copper, aluminum, and stainless steel, can be used.

  As a thin film transistor (TFT) for driving the display portion, an organic TFT having an active matrix function, a transparent oxide TFT, a silicon TFT, or the like can be used. In addition, as a material of the thin film transistor, pentacene, naphthacene, hexacene, heptacene, pyrene, chrysene, perylene, coronene, rubrene, perixanthenoxanthene, polythiophene, polyacene, polyphenylene vinylene, polypyrrole, porphyrin, carbon nanotube, fullerene, metal phthalocyanine, Organic semiconductor materials containing these derivatives, transparent oxide semiconductors such as InGaZnO 4 and ZnO, silicon semiconductors such as amorphous silicon, and low-temperature polysilicon can be used.

<2. First Embodiment>
FIG. 3 is a schematic diagram showing a main configuration of the display device according to the first embodiment of the present invention. The illustrated display device 30 includes a first housing 31 and a second housing 32, a flexible display unit 33, a display driving unit 34, a flexible printed wiring board 35, and a telescopic structure unit 36. It is the composition provided with. The X direction in the figure corresponds to the width direction of the display device 30, the Y direction corresponds to the height direction of the display device 30, and the Z direction corresponds to the depth direction of the display device 30. Unless otherwise specified, the X direction, the Y direction, and the Z direction are each bidirectional on one axis.

  The first casing 31 and the second casing 32 basically have the same outer shape. The first casing 31 and the second casing 32 are arranged symmetrically (line symmetric) with the center line in the width direction (X direction in the figure) of the display device 30 as the axis of symmetry. Each housing | casing 31 and 32 is comprised using insulating materials, such as resin, for example. Each of the casings 31 and 32 has a hollow structure. Each of the casings 31 and 32 is formed in a substantially rectangular shape that is vertically long when viewed from the front.

  The display unit 33 has a function of displaying an image (video). The display unit 33 preferably has a touch sensor function. The touch sensor function is a function of detecting a contact position (coordinate position) when an arbitrary position in the screen of the display unit 33 is touched with a fingertip or a touch pen. When the display unit 33 is provided with a touch sensor function, for example, it is possible to omit the operation key of the housing part, and the effect that the housing is more compact and portability and design are improved, and more Intuitive and direct operation is possible and the user interface is improved. For example, if the display device 30 is the electrophoretic display device described above, the display unit 33 is configured by the display unit 10 described above. In that case, the counter substrate 12 constituting one substrate of the display unit 10 is disposed in a state of facing the stretchable structure unit 36. The display unit 33 is formed in a sheet shape as a whole. When the display unit 33 is developed in a plane, the shape is a horizontally long rectangle. One end of the display unit 33 in the longitudinal direction is fixed inside the first casing 31, and the other end in the longitudinal direction of the display unit 33 is fixed inside the second casing 32. The fixing method may be any method such as a screwing method, an adhesion method, or a pressure bonding method.

  For example, the display unit 33 is housed inside the first housing 31 in a state of being rolled up (cylindrical shape) as illustrated. Although not shown in the figure, a winding mechanism (for example, a spring-loaded winding mechanism such as that used in a roll curtain) is incorporated in the first casing 31. Yes. The winding mechanism in the first casing 31 always applies a force (hereinafter referred to as “winding force”) in the winding direction to the display unit 33. One end portion of the display unit 33 in the longitudinal direction is fixed to a rotation shaft provided in the winding mechanism in the first housing 31.

  The display driving unit 34 drives the display unit 33. The display driver 34 includes, for example, a driving circuit that performs simple matrix driving, active matrix driving, and the like, a circuit system including the circuit, a driving power source (battery), and the like. However, the power for driving the display unit 33 can be supplied from the outside of the display device 30 via a power cord or the like. For this reason, it is not always necessary to incorporate a driving power source in the display driving unit 34. In addition, a speaker may be incorporated in at least one of the first casing 31 and the second casing 32 as necessary.

  The flexible printed wiring board 35 is for electrically connecting the display unit 33 and the display driving unit 34. A plurality of electrode portions are respectively provided on one end side and the other end side of the flexible printed wiring board 35. The plurality of electrode portions provided on one end side of the flexible printed wiring board 35 are electrically and mechanically connected to the plurality of connection electrodes provided on one side in the longitudinal direction of the display portion 33 by soldering or the like. The plurality of electrode portions provided on the other end side of the flexible printed wiring board 35 are electrically and mechanically connected to the plurality of connection electrodes provided on the circuit board or the like of the display driving unit 34 by soldering or the like. .

  The elastic structure 36 supports the first casing 31 and the second casing 32 in a state (attitude) parallel to each other, and the direction in which the first casing 31 and the second casing 32 approach and separate from each other. It expands and contracts in the (X direction in the figure).

  The stretchable structure 36 has a pantograph-type stretchable structure as shown in FIGS. 4 shows a state in which the stretchable structure portion 36 is extended, and FIG. 5 shows a state in which the stretchable structure portion 36 is shrunk.

  The telescopic structure portion 36 is configured by combining a plurality of (five in the illustrated example) two arms 37a and 37b that intersect each other in an X-shape. Two intersecting arms 37a and 37b are provided side by side in the X direction. The arms 37a and 37b are formed in a plate shape having the same length using a material such as resin or metal. Each of the arms 37 a and 37 b has a high rigidity enough to support the first housing 31 and the second housing 32. The intermediate portion in the length direction of the arm 37 a and the intermediate portion in the length direction of the arm 37 b are rotatably connected by a connecting member 38. Of the three arms 37a adjacent in the X direction, one end portion (upper end portion) of the middle arm 37a is rotatably connected to one end portion (upper end portion) of the arm 37b connected thereto by a connecting member 38. Yes. Further, the other end portion (lower end portion) of the middle arm 37a described above is rotatably connected to the other end portion (lower end portion) of another arm 37b connected thereto by a connecting member 38.

  As shown in FIG. 6 (A), the arm 37a is provided with connecting holes 39 in the middle and both ends in the length direction. Similarly, as shown in FIG. 6B, the arm 37b is also provided with connecting holes 39 in the middle and both ends in the length direction. In the length direction of each arm 37a, 37b, the distance from the connecting hole 39 at the intermediate portion to the connecting holes 39 at both ends is equal. The connecting hole 39 is a circular through hole. The connecting member 38 described above uses the connecting holes 39 to rotatably connect the arms 37a and 37b. However, since the arms 37a and 37b arranged at the extreme ends in the X direction need to be connected to the first casing 31 and the second casing 32, they are provided at the ends of the arms 37a and 37b. The connecting member 38 is not attached to the portion of the connecting hole 39 formed.

  The arms 37a and 37b arranged at the endmost part and the first housing 31 corresponding to the arms 37a and 37b are connected by the following structure, for example. First, as for the arm 37a, as shown in FIG. 7, a pin member 40 is mounted in a connecting hole 39 provided at one end (upper end) thereof. The pin member 40 is a grooved member having a circular cross section. The pin member 40 has two grooves formed at different positions in the central axis direction. The connecting hole 39 of the arm 37a is fitted into one groove of the pin member 40. In addition, a portion of the long hole 42 of the attachment piece 41 provided in the first housing 31 is fitted in the other groove portion of the pin member 40. One end of the arm 37a is rotatable about the pin member 40. The pin member 40 is movable in the long axis direction of the long hole 42.

  As for the arm 37b, as shown in FIG. 8, a pin member 43 is mounted in a connecting hole 39 provided at the other end (lower end). The pin member 43 is a grooved member having a circular cross section. In the groove portion of the pin member 43, the portion of the connecting hole 39 of the arm 37b is fitted. Further, the end portion of the pin member 43 is fitted in the hole 45 of the attachment piece 44 provided in the first housing 31. One end of the arm 37b is rotatable about the pin member 43. The pin member 43 is fixed to the hole 45 of the attachment piece 44 by press fitting or the like.

  Further, the arms 37a and 37b arranged at the extreme ends and the second housing 32 corresponding to the arms 37a and 37b are connected by the following structure. That is, the arm 37a is connected to the second casing 32 with the same structure as the arm 37b shown in FIG. 8 above, using the connecting hole 39 provided at the other end (lower end). Further, the arm 37b is connected to the second casing 32 with the same structure as that of the arm 37a shown in FIG. 7, using a connecting hole 39 provided at one end (upper end) thereof.

  In the display device 30 configured as described above, a state in which the first housing 31 and the second housing 32 are disposed close to each other as shown in FIGS. 9A and 10A (when not used). Then, as shown in FIG. 3, the display unit 33 is wound and accommodated inside the first casing 31 in a roll shape. In addition, as shown in FIG. 5, the telescopic structure 36 is folded in a contracted state so that the arms 37a and 37b are arranged most closely.

  In such a state, when the display device 30 is actually used, the first casing 31 and the second casing 32 are separated in a direction in which the first casing 31 and the second casing 32 are separated from each other. At least one of them is moved in the X direction. Then, the display unit 33 is unwound (drawn) from the first housing 31 in accordance with the movement of the housing, and the telescopic structure 36 is extended in the X direction. At this time, in the stretchable structure portion 36, the distance between the connecting holes 39 of the arms 37a and 37b arranged at the extreme ends in the X direction (hole pitch in the Y direction) is gradually reduced by the stretching operation of the stretchable structure portion 36. . For this reason, the position of the pin member 40 shown in FIG. 7 is displaced in the long axis direction of the long hole 42. That is, the change in the interval between the connecting holes 39 of the arms 37a and 37b is absorbed by the displacement of the pin member 40 in the long axis direction of the long hole 42. For this reason, the expansion-contraction structure part 36 can be smoothly expanded-contracted in a X direction.

  Thereafter, as the housing moves as described above, when the first housing 31 and the second housing 32 are separated by a specified distance as shown in FIGS. 9B and 10B, the pin member 40 abuts against one end (lower end) of the long hole 42. Thereby, the maximum separation distance between the first casing 31 and the second casing 32 is limited. For this reason, when unwinding the display unit 33 from the first housing 31, the display unit 33 can be pulled out by a desired length. Further, when the pin member 40 hits one end of the long hole 42, a lock mechanism (not shown) (for example, a hooking structure using a hook) is switched from the unlocked state to the locked state, and the first casing 31 and the second housing The housing 32 is held in a separated state.

  By extending the telescopic structure 36 in this manner, the display unit 33 is stretched between the first casing 31 and the second casing 32 with the winding force of the winding mechanism. . Further, when viewed from the Y direction, as shown in FIG. 10B, the display portion 33 and the stretchable structure portion 36 are arranged in parallel with a substantially constant interval. Further, when the display device 30 is viewed from the front side, the stretchable structure portion 36 is disposed on the back side of the display portion 33. By driving the display unit 33 by the display driving unit 34 in this state, the image displayed on the display surface of the display unit 33 can be viewed from the front direction of the display device 30.

  When the use of the display device 30 is finished, the locking mechanism described above is switched from the locked state to the unlocked state. Next, at least one casing is moved in the X direction in a direction in which the first casing 31 and the second casing 32 approach each other. At this time, the first casing 31 and the second casing 32 approach each other by being pulled by the winding force applied to the display unit 33 by the winding mechanism provided in the first casing 31. In addition, the display unit 33 is wound into the first housing 31 in accordance with the movement of the housing, and the telescopic structure 36 is contracted in the X direction. Finally, as shown in FIGS. 9A and 10A, the first housing 31 and the second housing 32 are in close proximity.

  In the display device 30 that operates as described above, when the first casing 31 and the second casing 32 are separated from each other in use, the first casing 31 and the second casing 32 are stretchable. The parts 36 are supported in parallel with each other. Further, the first casing 31 and the second casing 32 are always supported by the telescopic structure section 36 including when the display section 33 is pulled out and housed. The first casing 31 and the second casing 32 are supported in parallel with each other both when the display device 30 is viewed from the front and when the display 30 is viewed from the side. The For this reason, when the display unit 33 is deployed with the first casing 31 and the second casing 32 separated from each other, the extension state of the expansion / contraction structure unit 36 interlocked with the display unit 33 improves the planar state of the display unit 33. Can be kept. For this reason, the visibility of the display screen of the display device 30 can be improved.

  Further, as the stretchable structure portion 36, a pantograph-type stretchable structure is adopted. For this reason, when the display device 30 is not used, the telescopic structure 36 can be folded compactly and stored. Moreover, the thickness dimension of the expansion-contraction structure part 36 can be restrained small. For this reason, it contributes to size reduction, thickness reduction, and weight reduction of the display device 30.

<3. Second Embodiment>
FIG. 11 is a schematic diagram showing the configuration of a display device according to the second embodiment of the present invention. The display device 30 shown in the figure is different from the first embodiment in the configuration of the stretchable structure portion 36. The stretchable structure 36 has an antenna-type stretchable structure. More specifically, the telescopic structure 36 is constituted by a pair of antenna members 46.

  The pair of antenna members 46 are arranged in parallel to each other along the X direction. The pair of antenna members 46 are arranged at an interval in the Y direction. That is, one antenna member 46 is disposed above the first casing 31 and the second casing 32, and the other antenna member 46 is below the first casing 31 and the second casing 32. Arranged on the side. The pair of antenna members 46 expand and contract in the X direction. One end of each antenna member 46 is fixed to the first housing 31. The other end of each antenna member 46 is fixed to the second housing 32. Further, the outer diameter of each antenna member 46 is gradually reduced from the first housing 31 toward the second housing 32.

  In the display device 30 including the telescopic structure portion 36 having the above-described configuration, the first housing 31 and the second housing 32 are arranged close to each other as shown in FIG. The display unit 33 is wound into a roll and housed inside the casing 31. The telescopic structure 36 is in a state where the entire antenna member 46 is contracted so that the small diameter portion of each antenna member 46 is accommodated in the large diameter portion.

  In such a state, when the display device 30 is actually used, the first casing 31 is separated from the first casing 31 and the second casing 32 as shown in FIG. At least one of the body 31 and the second housing 32 is moved in the X direction. Then, the display unit 33 is unwound (drawn) from the first housing 31 in accordance with the movement of the housing, and the telescopic structure 36 is extended in the X direction. At this time, in the telescopic structure portion 36, the entire antenna member 46 is extended in such a manner that the small diameter portion of each antenna member 46 is pulled out from the large diameter portion.

  Thereafter, when the first casing 31 and the second casing 32 are separated by a specified distance in accordance with the movement of the casing described above, each antenna member 46 is fully extended. Thereby, the maximum separation distance between the first casing 31 and the second casing 32 is limited. For this reason, when unwinding the display unit 33 from the first housing 31, the display unit 33 can be pulled out by a desired length. Further, in a state where each antenna member 46 is extended, a predetermined external force is required to contract the antenna member 46. For this reason, the 1st housing | casing 31 and the 2nd housing | casing 32 can be hold | maintained in the state spaced apart only by extending each antenna member 46. FIG. However, the present invention is not limited to this, and the above-described locking mechanism may be provided as necessary.

  By extending the telescopic structure 36 in this manner, the display unit 33 is stretched between the first casing 31 and the second casing 32 with the winding force of the winding mechanism. . Further, when viewed from the Y direction, the display unit 33 and the stretchable structure unit 36 are arranged in parallel with a substantially constant interval. Further, when the display device 30 is viewed from the front side, the stretchable structure portion 36 is disposed on the back side of the display portion 33. By driving the display unit 33 by the display driving unit 34 in this state, the image displayed on the display surface of the display unit 33 can be viewed from the front direction of the display device 30.

  When the use of the display device 30 is finished, at least one casing is moved in the X direction in a direction in which the first casing 31 and the second casing 32 approach each other (a direction in which the antenna member 46 is contracted). . At this time, the display unit 33 is wound into the first casing 31 in accordance with the movement of the casing, and the telescopic structure 36 is contracted in the X direction. Finally, the first casing 31 and the second casing 32 are in close proximity.

  In the display device 30 that operates as described above, when the first casing 31 and the second casing 32 are separated from each other in use, the first casing 31 and the second casing 32 are stretchable. The parts 36 are supported in parallel with each other. Further, the first casing 31 and the second casing 32 are always supported by the telescopic structure section 36 including when the display section 33 is pulled out and housed. The first casing 31 and the second casing 32 are supported in parallel with each other both when the display device 30 is viewed from the front and when the display 30 is viewed from the side. The For this reason, when the display unit 33 is deployed with the first casing 31 and the second casing 32 separated from each other, the extension state of the expansion / contraction structure unit 36 interlocked with the display unit 33 improves the planar state of the display unit 33. Can be kept. For this reason, the visibility of the display screen of the display device 30 can be improved.

  Further, as the stretchable structure portion 36, an antenna-type stretchable structure is adopted. For this reason, when the display device 30 is not used, the telescopic structure 36 can be compactly stored. Moreover, the thickness dimension of the expansion-contraction structure part 36 can be restrained small. For this reason, it contributes to size reduction, thickness reduction, and weight reduction of the display device 30.

  In the first embodiment described above, the pin member 40 attached to the ends of the arms 37a and 37b at the extreme ends of the telescopic structure portion 36 is the first casing 31 and the second casing 32. It functions as a stopper that limits the maximum separation distance. In the second embodiment described later, the antenna member 46 of the telescopic structure 36 functions as a stopper that limits the maximum separation distance between the first housing 31 and the second housing 32. ing. However, the present invention is not limited to this. For example, when a winding type wire is stretched as a stopper between the first casing 31 and the second casing 32 and the first casing 31 and the second casing 32 are separated from each other. A configuration may be adopted in which the maximum separation distance of the housing is limited by winding the wire to the final end.

  In the first embodiment and the second embodiment, the display unit 33 is wound and stored in the first housing 31, and the display unit 33 is in the first state when the display device 30 is used. However, the present invention is not limited to this. For example, although not shown, the display unit 33 is accommodated in the first casing 31 by being compressed in a waveform, and the display unit 33 is pulled out from the first casing 31 when the display device 30 is used. It may be stretched around.

  In each of the above embodiments, the display device is configured using the first casing 31 and the second casing 32. However, the present invention is not limited to this, and at least one casing may be provided. Good. And the expansion-contraction mechanism part which performs expansion-contraction operation | movement should just be accommodated in the at least 1 or more housing.

  Further, as an additional component requirement of the display device, for example, the stretchable structure (stretchable structure portion 36) can be arbitrarily set to reach the maximum separation distance in which the first housing 31 and the second housing 32 are most separated. It is good also as a structure which has the stopper mechanism which supports the 1st housing | casing 31 and the 2nd housing | casing 32 in a stationary state by distance.

  Furthermore, as an additional functional configuration of the display driving unit 34, there is a control means for recognizing the display area of the display unit 33 drawn from the first housing 31 and driving the display unit 33 in accordance with the display area. It is good also as a structure. More specifically, for example, when the display area (drawing amount) of the display unit 33 is relatively small, the size of the display image (effective display screen) is relatively decreased accordingly. In addition, when the display area (drawing amount) of the display unit 33 is relatively large, the display driving unit 34 is configured so that the size of the display image (effective display screen) becomes relatively large accordingly. It is good also as a structure which controls the display part 33 by the control means with which it is provided.

  DESCRIPTION OF SYMBOLS 30 ... Display apparatus, 31 ... 1st housing | casing, 32 ... 2nd housing | casing, 33 ... Display part, 36 ... Telescopic structure part, 37a, 37b ... Arm, 46 ... Antenna member

Claims (8)

In a display device including a display unit having flexibility,
Having at least one housing,
The display is housed in at least one of the housings;
A display device comprising: an expansion / contraction structure that extends and contracts to support the case when the display unit is pulled out from the inside of the case. In a display device including a display unit having flexibility,
The display device has a first housing and a second housing,
A mechanism in which a flexible display portion is housed in the first housing and pulled out from the first housing by separating the first housing and the second housing from each other. Have
The first casing and the second casing are supported in parallel with each other, and the telescopic structure is configured to extend and contract in a direction in which the first casing and the second casing approach and separate from each other. Display device. The display device according to claim 1, wherein the expansion / contraction mechanism that performs the expansion / contraction operation is housed in at least one casing. The display device according to claim 1, wherein the display unit including at least one casing is stored in a cylindrical shape when stored in the casing. The display device according to claim 1, wherein the stretchable structure has a pantograph-type stretchable structure. The display device according to claim 1, wherein the stretchable structure has an antenna-type stretchable structure. The telescopic structure is in a state in which the first housing and the second housing are stationary at an arbitrary distance up to a maximum separation distance that most separates the first housing and the second housing. The display device according to claim 2, further comprising a stopper mechanism that supports the display device. The display device according to claim 1, further comprising a control unit that recognizes a display area of the display unit pulled out from the casing and drives the display unit according to the display area.

Images