Display device

Abstract

A display device is disclosed. The display device of the present disclosure may comprise: a display panel; a bar which adjoins the display panel or is fixed to the display panel; a link which is elongated and one end of which is coupled to the bar; a shaft to which the other end of the link is fixed; a motor which provides power for rotating the shaft; a pinion which is fixed to the distal end of the shaft; a rack which is movable by engagement with the pinion; and an elastic member which supports the rack and is stretchable in the moving direction of the rack.

Description

display device

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

[0002] As the information society develops, the demand for display devices is also increasing in various forms, and in response to this, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), and VFD (Vacuum Fluorescent Display) are being researched and used in recent years.

[0003] Among these, the LCD panel has a TFT substrate and a color substrate that face each other with a liquid crystal layer in between, and can display images using light provided from a backlight unit. In addition, the OLED panel can display images by depositing an organic layer capable of self-luminescence on a substrate on which a transparent electrode is formed.

[0004] Additionally, the flexible display panel can be bent or rolled around a roller. Using the flexible display panel, a display device that can be rolled around or unfolded on a roller can be implemented.

[0005] Recently, much research has been conducted on transparent display panels that can not only display images to the user, but also allow the user to see behind the display panel.

[0006] The present disclosure aims to solve the above-mentioned and other problems.

[0007] Another purpose may be to provide a structure for rotating a link that connects to a display panel or cover, etc.

[0008] Another purpose may be to provide a structure that allows a motor outputting a relatively small torque to smoothly rotate a link subjected to a relatively large load.

[0009] Another purpose may be to provide a structure capable of responding to loads of various sizes applied to the link by applying different elastic members to specific motors.

[0010] Another purpose may be to provide a way to control the rotation of the links.

[0011] Another purpose may be to provide display devices of various examples to which the link applies.

[0012] According to one aspect of the present disclosure for achieving the above or other purposes, a display device may include: a display panel; a bar adjacent to or fixed to the display panel; a link elongated and having one end joined to the bar; a shaft to which the other end of the link is fixed; a motor providing power to rotate the shaft; a pinion fixed to an end of the shaft; a rack movable by engaging with the pinion; and an elastic member supporting the rack and capable of stretching in a direction of movement of the rack.

[0013] The effects of the display device according to the present disclosure are described as follows.

[0014] According to at least one of the embodiments of the present disclosure, a structure for rotating a link connected to a display panel or cover or the like can be provided.

[0015] According to at least one of the embodiments of the present disclosure, a structure can be provided that can smoothly rotate a link to which a relatively large load is applied by a motor that outputs a relatively small torque.

[0016] According to at least one of the embodiments of the present disclosure, a structure capable of responding to loads of various sizes applied to a link can be provided by applying elastic members differently for specific motors.

[0017] According to at least one of the embodiments of the present disclosure, a method for controlling rotation of a link can be provided.

[0018] According to at least one of the embodiments of the present disclosure, various examples of display devices to which a link is applied can be provided.

[0019] Further scope of the applicability of the present disclosure will become apparent from the detailed description below. However, since various modifications and variations within the spirit and scope of the present disclosure will become apparent to those skilled in the art, it should be understood that the detailed description and specific examples, such as preferred embodiments of the present disclosure, are given by way of example only.

[0020] Figures 1 to 17 are drawings illustrating examples of display devices according to embodiments of the present disclosure.

[0021] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components are given the same reference numbers and redundant descriptions thereof will be omitted.

[0022] The suffixes "module" and "part" used for components in the following description are given or used interchangeably only for the convenience of writing specifications, and do not have distinct meanings or roles in themselves.

[0023] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0024] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0025] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0026] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0027] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0028] The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are only for convenience of explanation, and the technical ideas disclosed in this specification are not limited thereby.

[0029] Hereinafter, a display panel using an organic light emitting diode (OLED) is described as an example, but the type of display panel applicable to the present disclosure is not limited thereto.

[0030]

[0031] Referring to FIG. 1, a display device (1) may include a display (10), a frame (20), and a housing (90). The display (10) may display an image. The frame (20) may extend along the perimeter of the display (10) and may be coupled or attached to the display (10). The housing (90) may be positioned below the display (10) and the frame (20). Alternatively, the housing (90) may be positioned above, to the left, or below the display (10) and the frame (20).

[0032] The frame (20) may include a first long side (LS1), a second long side (LS2) opposite the first long side (LS1), a first short side (SS1) adjacent to the first long side (LS1) and the second long side (LS2), and a second short side (SS2) opposite the first short side (SS1). The first long side (LS1) may extend along an upper side of the display (10) and cover the upper side. The second long side (LS2) may extend along a lower side of the display (10) and cover the lower side. The first short side (SS1) may extend along a left side of the display (10) and cover the left side. The second short side (SS2) can extend along the right side of the display (10) and cover the right side.

[0033] Meanwhile, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are illustrated and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it may also be possible for the lengths of the first and second long sides (LS1, LS2) to be approximately equal to or longer than the lengths of the first and second short sides (SS1, SS2).

[0034]

[0035] Referring to FIG. 2, the display (10) may include a display panel (11) and a transparent panel (13). The display panel (11) may be referred to as a transparent display panel (11) or a transparent OLED panel (11). The transparent panel (13) may be attached to the front surface of the display panel (11) and may be made of transparent glass. A portion of the transparent panel (13) may be fixed to a bracket (25) inside the housing (90, see FIG. 1).

[0036] A source PCB (14) can be positioned on a bracket (25) and covered by a shield (14Ca). A cable (15), such as a COF (Chip On Film), can electrically connect the source PCB (14) and the lower side of the display panel (11). A timing controller board (not shown) inside the housing (90, see FIG. 1) can be electrically connected to the display panel (11) via the source PCB (14) and provide image data to the display panel (11).

[0037] The roller (50) may extend horizontally adjacent to the bracket (25) and may be rotatable within the housing (90, see FIG. 1). The sub-roller (60) may extend horizontally adjacent to the roller (50) and may be rotatable within the housing (90, see FIG. 1).

[0038] A bar (52) may be positioned between the display panel (11) and the back cover (19). The back cover (19) may be made of transparent glass and may face the display panel (11). The back cover (19) may be fixed to the housing (90, see FIG. 1). The bar (52) may move up and down in the space (D10) between the display panel (11) and the back cover (19). The back cover (19) may be omitted.

[0039] One end of the cover (51) can be fixed to the roller (50), and the other end of the cover (51) can be fixed to the bar (52). A portion of the cover (51) can wrap around the bar (52), and a coupler (53) can fix the portion of the cover (51) to the bar (52). The cover (51) can be wrapped around or unwound from the roller (50), and can be caught on a sub-roller (60). A spring can be built into the roller (50) and provide elasticity to the roller (50) in the direction in which the cover (51) is wrapped around the roller (50). That is, when the force for unwinding the cover (51) from the roller (50) is released, the roller (50) can be rotated in the direction in which the cover (51) is wrapped by the spring. The cover (51) can include a fabric material (see FIG. 2). Alternatively, the cover (51) may be composed of horizontal bars connected to each other in the vertical direction (see Fig. 6).

[0040]

[0041] Referring to FIGS. 2 to 4, the cover (51) may be positioned inside the housing (90). That is, the cover (51) may be fully or heavily wound around the roller (50) inside the housing (90).

[0042]

[0043] Referring to FIGS. 5 and 6, the cover (51) may be exposed to the outside of the housing (90) to cover the rear of the display (10). That is, the cover (51) may be in a state where it is fully or largely released from the roller (50, see FIG. 2) inside the housing (90).

[0044] The cover (51) fixed to the bar (52) can gradually cover the rear of the display (10) while rising through the opening (90P, see Fig. 1) formed on the upper surface of the housing (90). The cover (51) fixed to the bar (52) can gradually expose the rear of the display (10) while lowering through the opening (90P, see Fig. 1).

[0045] A foldable link (40) may be positioned at the rear of the cover (51). The foldable link (40) may be referred to as a link (40). One end of the foldable link (40) may be pivotally coupled to the housing (90), and the other end of the foldable link (40) may be pivotally coupled to the link bracket (54). The foldable link (40) may be erected from the housing (90) or laid down toward the housing (90). The foldable link (40) may be provided in one or two or more numbers. For example, the first foldable link (40a) and the second foldable link (40b) may be spaced apart from each other in the left-right direction. The first and second foldable links (40a, 40b) may be symmetrical left-right.

[0046] The first foldable link (40a) may include a first arm (41a), a second arm (42a), and a joint (43a). The first arm (41a) and the second arm (42a) may be elongated and connected to each other by the joint (43a). One end of the first arm (41a) may be pivotally coupled to the housing (90), and the other end of the first arm (41a) may be pivotally coupled to the joint (43a). One end of the second arm (42a) may be pivotally coupled to the joint (43a), and the other end of the second arm (42a) may be pivotally coupled to the first link bracket (54a). The first link bracket (54a) may be fixed to the bar (52) adjacent to the left end of the bar (52).

[0047] Accordingly, when the first arm (41a) is erected while rotating counterclockwise (CCW) by the rotation mechanism described below with reference to FIGS. 10 to 16, the angle (theta a) between the first and second arms (41a, 42a) may increase correspondingly, and as a result, the bar (52) may rise. Conversely, when the first arm (41a) is laid down while rotating clockwise (CW) by the rotation mechanism described above and below, the angle (theta a) between the first and second arms (41a, 42a) may decrease correspondingly, and as a result, the bar (52) may descend.

[0048] The second foldable link (40b) may include a first arm (41b), a second arm (42b), and a joint (43b). The first arm (41b) and the second arm (42b) may be elongated and connected to each other by the joint (43b). One end of the first arm (41b) may be pivotally coupled to the housing (90), and the other end of the first arm (41b) may be pivotally coupled to the joint (43b). One end of the second arm (42b) may be pivotally coupled to the joint (43b), and the other end of the second arm (42b) may be pivotally coupled to a second link bracket (54b). The second link bracket (54b) may be fixed to the bar (52) adjacent to the right end of the bar (52).

[0049] Accordingly, when the first arm (41b) is raised while rotating clockwise (CW) by the rotation mechanism described below with reference to FIGS. 10 to 16, the angle (theta b) between the first and second arms (41b, 42b) may increase correspondingly, and as a result, the bar (52) may rise. Conversely, when the first arm (41b) is lowered while rotating counterclockwise (CCW) by the rotation mechanism described above and below, the angle (theta b) between the first and second arms (41b, 42b) may decrease correspondingly, and as a result, the bar (52) may descend.

[0050]

[0051] Referring to FIGS. 7 and 9, the base (91) may be positioned inside the housing (90) and may extend horizontally. The roller (50) may be adjacent to the base (91) and may extend horizontally inside the housing (90). One end of the display (10) may be fixed to the roller (50), and the other end of the display (10) may be fixed to the bar (52). The display (10) may be wound around the roller (50) or unwound from the roller (50). A spring may be built into the roller (50) and may provide elastic force to the roller (50) in the direction in which the display (10) is wound around the roller (50). That is, when the force for unwinding the display (10) from the roller (50) is released, the roller (50) may be rotated by the spring in the direction in which the display (10) is wound. The display panel (11) of the display (10) can be flexible and may be referred to as a flexible display panel (11).

[0052] A foldable link (40) may be positioned at the rear of the display (10). The foldable link (40) may be referred to as a link (40). One end of the foldable link (40) may be pivotally coupled to a base (91), and the other end of the foldable link (40) may be pivotally coupled to a link bracket (54). The foldable link (40) may be erected from the housing (90) or laid down toward the housing (90). The foldable link (40) may be provided in one or two or more numbers. For example, the first foldable link (40a) and the second foldable link (40b) may be spaced apart from each other in the left-right direction. The first and second foldable links (40a, 40b) may be symmetrical left-right.

[0053] The first foldable link (40a) may include a first arm (41a), a second arm (42a), and a joint (43a). The first arm (41a) and the second arm (42a) may be elongated and connected to each other by the joint (43a). One end of the first arm (41a) may be pivotally coupled to the housing (90), and the other end of the first arm (41a) may be pivotally coupled to the joint (43a). One end of the second arm (42a) may be pivotally coupled to the joint (43a), and the other end of the second arm (42a) may be pivotally coupled to the first link bracket (54a). The first link bracket (54a) may be fixed to the bar (52) adjacent to the left end of the bar (52).

[0054] A first gear (g1) may be formed at the other end of the first arm (41a) and may be engaged with a second gear (g2) formed at one end of the second arm (42a). A pivot center axis (P1) of the first arm (41a) may be formed at the center of the first gear (g1), and a pivot center axis (P2) of the second arm (42a) may be formed at the center of the second gear (g2). The first and second arms (41a, 42a) may rotate in opposite directions.

[0055] Accordingly, when the first arm (41a) is erected while rotating counterclockwise (CCW) by the rotation mechanism described below with reference to FIGS. 10 to 16, the angle (theta a) between the first and second arms (41a, 42a) may increase correspondingly, and as a result, the bar (52) may rise. Conversely, when the first arm (41a) is laid down while rotating clockwise (CW) by the rotation mechanism described above and below, the angle (theta a) between the first and second arms (41a, 42a) may decrease correspondingly, and as a result, the bar (52) may descend.

[0056] The second foldable link (40b) may include a first arm (41b), a second arm (42b), and a joint (43b). The first arm (41b) and the second arm (42b) may be elongated and connected to each other by the joint (43b). One end of the first arm (41b) may be pivotally coupled to the housing (90), and the other end of the first arm (41b) may be pivotally coupled to the joint (43b). One end of the second arm (42b) may be pivotally coupled to the joint (43b), and the other end of the second arm (42b) may be pivotally coupled to a second link bracket (54b). The second link bracket (54b) may be fixed to the bar (52) adjacent to the right end of the bar (52).

[0057] A first gear (g1) may be formed at the other end of the first arm (41b) and may be engaged with a second gear (g2) formed at one end of the second arm (42b). A pivot center axis (P1) of the first arm (41b) may be formed at the center of the first gear (g1), and a pivot center axis (P2) of the second arm (42b) may be formed at the center of the second gear (g2). The first and second arms (41b, 42b) may rotate in opposite directions.

[0058] Accordingly, when the first arm (41b) is raised while rotating clockwise (CW) by the rotation mechanism described below with reference to FIGS. 10 to 16, the angle (theta b) between the first and second arms (41b, 42b) may increase correspondingly, and as a result, the bar (52) may rise. Conversely, when the first arm (41b) is lowered while rotating counterclockwise (CCW) by the rotation mechanism described above and below, the angle (theta b) between the first and second arms (41b, 42b) may decrease correspondingly, and as a result, the bar (52) may descend.

[0059] In response to the rise of the bar (52), the display (10) fixed to the bar (52) can be gradually released from the roller (50) and gradually exposed to the outside of the housing (90).

[0060] In response to the lowering of the bar (52), the display (10) fixed to the bar (52) can be gradually wrapped around the roller (50) and gradually hidden inside the housing (90).

[0061]

[0062] Referring to FIGS. 8 and 9, the base (91) may be positioned inside the housing (90) and may extend horizontally. The display (10) may be positioned above the base (91). The bar (52) may extend along the lower edge of the display (10) and may be fixed to the lower edge.

[0063] A link (40) can connect a base (91) and a bar (52) of a display (10). The link (40) may be composed of a single arm. Alternatively, the link (40) may be composed of two arms connected by a joint, such as the foldable link (40, see FIGS. 5 and 7) described above. One end of the link (40) may be pivotally coupled to the base (91), and the other end of the link (40) may be pivotally coupled to a link bracket (54). The link (40) may be erected from the housing (90) or laid down toward the housing (90). The link (40) may be provided in one or two or more numbers. For example, the first link (40a) and the second link (40b) may be spaced apart from each other in the left-right direction. The first and second links (40a, 40b) may be symmetrical left-right.

[0064] The first link (40a) may include an arm (41a). The arm (41a) may be elongated. One end of the arm (41a) may be pivotally coupled to the housing (90), and the other end of the arm (41a) may be pivotally coupled to the first link bracket (54a). The first link bracket (54a) may be adjacent to the left end of the bar (52) and fixed to the bar (52). A pin (41Pa) formed at the other end of the arm (41a) may be movably inserted into a horizontally elongated slot (54Pa) of the first link bracket (54a).

[0065] Accordingly, when the arm (41a) is raised while rotating counterclockwise (CCW) by the rotation mechanism described below with reference to FIGS. 10 to 16, the bar (52) can be raised. Conversely, when the arm (41a) is lowered while rotating clockwise (CW) by the rotation mechanism described above and below, the bar (52) can be lowered.

[0066] The second link (40b) may include an arm (41b). The arm (41b) may be elongated. One end of the arm (41b) may be pivotally coupled to the housing (90), and the other end of the arm (41b) may be pivotally coupled to the second link bracket (54b). The second link bracket (54b) may be adjacent to the right end of the bar (52) and fixed to the bar (52). A pin (41Pb) formed at the other end of the arm (41b) may be movably inserted into a horizontally elongated slot (54Pb) of the second link bracket (54b).

[0067] Accordingly, when the arm (41b) is raised while rotating clockwise (CW) by the rotation mechanism described below with reference to FIGS. 10 to 16, the bar (52) can be raised. Conversely, when the arm (41b) is lowered while rotating counterclockwise (CCW) by the rotation mechanism described above and below, the bar (52) can be lowered.

[0068] In response to the rise of the bar (52), the display (10) fixed to the bar (52) can gradually rise and be gradually exposed to the outside of the housing (90).

[0069] In response to the lowering of the bar (52), the display (10) fixed to the bar (52) can gradually lower and be gradually hidden inside the housing (90).

[0070]

[0071] Referring to FIGS. 10 and 11, a link mount (70M) may be fixed on a base (91). The link mount (70M) may include a first plate (70Ma) and a second plate (70Mb) spaced apart from each other in the thickness direction of the link (40). The first and second plates (70Ma, 70Mb) may intersect the base (91). The link (40) may be inserted into the space between the first and second plates (70Ma, 70Mb).

[0072] The rotating assembly (70) can be mounted on the link mount (70M) and can provide rotational force to the link (40). The rotating assembly (70) can include a motor (71), a power transmission member (72), a shaft (73), a pinion (74), a rack (75), and an elastic member (76).

[0073] The motor (71) can be mounted on the first plate (70Ma) of the link mount (70M). The motor (71) can be an electric motor capable of adjusting the rotational direction, rotational speed, and rotational angle of the rotational shaft.

[0074] The power transmission member (72) can be fixed to the rotational axis of the motor (71) and can transmit the power of the motor (71) to the link (40). The power transmission member (72) can include gear(s) connected to the rotational axis of the motor (71). The power transmission member (72) can include a worm (72a) and a worm wheel (72b). The worm (72a) can be parallel to the rotational axis of the motor (71) and can be fixed to the rotational axis. A coupling member (72c) can connect the rotational axis of the motor (71) and the worm (72a). The worm wheel (72b) can rotate around an axis intersecting the worm (72a) and can be engaged with the worm (72a). The worm (72a) and the worm wheel (72b) can be accommodated inside a gear box (70G: 70Ga, 70Gb) mounted on the side of the first plate (70Ma) of the link mount (70M).

[0075] The shaft (73) can be extended to pass through the first and second plates (70Ma, 70Mb) of the link mount (70M). The shaft (73) can intersect the worm wheel (72b) and be fixed to the worm wheel (72b). For example, a portion of the shaft (73) can be inserted into and fixed to the worm wheel (72b). The link (40) can have a hole (40h) through which the shaft (73) passes and can be fixed to the shaft (73). That is, the link (40) can rotate together with the shaft (73). The first bearing (73a) can be positioned between the outer surface of the shaft (73) and the through hole of the first plate (70Ma) and can support the rotation of the shaft (73). The second bearing (73b) can be positioned between the outer surface of the shaft (73) and the through hole of the second plate (70Mb), and can support the rotation of the shaft (73).

[0076] The pinion (74) can be fixed to the end of the shaft (73) and can be located outside the second plate (70Mb). One end of the shaft (73) can be fixed to the worm wheel (72b), and the pinion (74) can be fixed to the other end of the shaft (73). That is, the shaft (73) and the pinion (74) can rotate together with the worm wheel (72b), and their rotational centers can be aligned in the front-rear direction.

[0077] The rack (75) may extend vertically and engage with the pinion (74). The rack (75) may include a vertical portion (75a) on which a gear engaging with the pinion (74) is formed, and a horizontal portion (75b) intersecting the vertical portion (75a). The rack (75) may have an overall “L” shape.

[0078] The elastic member (76) may be positioned between the supporter (70S) and the horizontal portion (75b). The supporter (70S) may be fixed to the second plate (70Mb) and / or the base (91) and may face the horizontal portion (75b) in the vertical direction. The supporter (70S) may have an overall block shape. The elastic member (76) may be elongated or compressed in the vertical direction and may have elasticity. The elastic member (76) may be a spring. The lower end of the elastic member (76) may be positioned on the supporter (70S) and may be supported by the supporter (70S). The upper end of the elastic member (76) may be positioned on the lower surface of the horizontal portion (75b) and may support the horizontal portion (75b). The lower end of the elastic member (76) can be fixed to the supporter (70S), and the upper end of the elastic member (76) can be fixed to the horizontal portion (75b). The supporter (70S) can have a hole (70SH) into which the elastic member (76) is inserted, and can surround at least a portion of the elastic member (76). There can be one elastic member (76), or two or more. The first elastic member (76a) can be inserted into the first hole (70SHa) of the supporter (70S), and the second elastic member (76b) can be inserted into the second hole (70SHb) of the supporter (70S).

[0079] The box (70SB) can be mounted on the side of the second plate (70Mb). The pinion (74), the rack (75), and the elastic member (76) can be accommodated inside the box (70SB). The supporter (70S) can form a part of the box (70SB) or be fixed to the box (70SB).

[0080]

[0081] Referring to FIGS. 11 to 13, a bar (52, see FIG. 5) fixed to the cover (51) or a bar (52, see FIGS. 7 and 8) fixed to the display (10) can be connected to the end (40P) of the link (40). A load (W) of the cover (51) or the display (10) can be applied to the end (40P) of the link (40). The link (40) can be the arm (41b) described above with reference to FIGS. 5, 7, and 8. A first rotation assembly (70a) that is symmetrical to the left and right and a second rotation assembly (70b) that provides a rotational force to the arm (41b) can provide a rotational force to the arm (41a, see FIGS. 5, 7, and 8).

[0082] The link (40) may be parallel to or close to the base (91). The horizontal portion (75b) may be positioned close to the supporter (70S), and the elastic member (76) may be compressed between the supporter (70S) and the horizontal portion (75b).

[0083] The first sensor (77) can be mounted between the first plate (70Ma) and the second plate (70Mb) and can detect the angle of the link (40). For example, the first sensor (77) can be a photo sensor and can include a light emitting portion and a light receiving portion facing each other. The first sensor (77) including the light emitting portion and the light receiving portion can have an overall horseshoe shape. The light emitting portion can provide light in the infrared wavelength range toward the light receiving portion. When the first protrusion (411) formed on the link (40) is positioned between the light emitting portion and the light receiving portion, the light from the light emitting portion can be blocked by the first protrusion (411), and the control portion of the display device can detect the angle of the link (40). Accordingly, the control portion can control the operation of the motor (71) based on the information acquired from the first sensor (77). For example, the control unit can stop the counterclockwise rotation of the link (40) when the first protrusion (411) is detected by the first sensor (77).

[0084] In response to the operation of the motor (71), when the shaft (73) rotates clockwise (CW), the link (40) fixed to the shaft (73) can also be erected while rotating clockwise. The pinion (74) fixed to the shaft (73) can also rotate clockwise, and the rack (75) engaged with the pinion (74) can rise. At this time, the restoring force of the elastic member (76) can push the rack (75) upward. The rise of the rack (75) can be restricted when the upper surface of the rack (75) contacts the inner surface of the box (70SB).

[0085] Accordingly, the restoring force of the elastic member (76) can assist the clockwise rotation of the link (40).

[0086]

[0087] Referring to FIGS. 14 to 16, a bar (52, see FIG. 5) fixed to the cover (51) or a bar (52, see FIGS. 7 and 8) fixed to the display (10) can be connected to the end (40P) of the link (40). A load (W) of the cover (51) or the display (10) can be applied to the end (40P) of the link (40). The link (40) can be the arm (41b) described above with reference to FIGS. 5, 7, and 8. A first rotation assembly (70a) that is symmetrical to the left and right and a second rotation assembly (70b) that provides a rotational force to the arm (41b) can provide a rotational force to the arm (41a, see FIGS. 5, 7, and 8).

[0088] The link (40) may be perpendicular to or close to the base (91). The horizontal portion (75b) may be positioned away from the supporter (70S), and the elastic member (76) may be in its original state or slightly compressed between the supporter (70S) and the horizontal portion (75b).

[0089] The second sensor (78) can be mounted between the first plate (70Ma) and the second plate (70Mb) and can detect the angle of the link (40). For example, the second sensor (78) can be a photo sensor and can include a light emitting portion and a light receiving portion that face each other. The second sensor (78) including the light emitting portion and the light receiving portion can have an overall horseshoe shape. The light emitting portion can provide light in the infrared wavelength range toward the light receiving portion. When the second protrusion (412) formed on the link (40) is positioned between the light emitting portion and the light receiving portion, the light from the light emitting portion can be blocked by the second protrusion (412), and the control portion of the display device can detect the angle of the link (40). Accordingly, the control portion can control the operation of the motor (71) based on the information obtained from the second sensor (78). For example, the control unit can stop the clockwise rotation of the link (40) when the second protrusion (412) is detected by the second sensor (78).

[0090] In response to the operation of the motor (71), when the shaft (73) rotates counterclockwise (CCW), the link (40) fixed to the shaft (73) can also be laid down while rotating counterclockwise. The pinion (74) fixed to the shaft (73) can also be rotated counterclockwise, and the rack (75) engaged with the pinion (74) can be lowered. At this time, the elastic force of the elastic member (76) can support the descending rack (75) upward.

[0091] Accordingly, the elastic force of the elastic member (76) can buffer the counterclockwise rotation of the link (40).

[0092]

[0093] Referring to FIG. 17, a first torque line (T1) of the graph may represent a torque applied counterclockwise to the link (40) of FIG. 16 by a load (W), and a second torque line (T2) of the graph may represent a torque applied clockwise to the link (40) of FIG. 16 by an elastic member (76). The first torque line (T1) may draw a curve or a parabola, and the second torque line (T2) may draw a straight line.

[0094] The origin of the graph can represent the state of the link (40) of Fig. 16, i.e., the standing link (40), and as the x-axis value of the graph increases, the angle at which the link (40) rotates counterclockwise can increase, and as the y-axis value of the graph increases, the torque can increase.

[0095] In the first section (SA), i.e., the section in which the link (40) rotates counterclockwise from an upright state to a first angle (theta 1), the second torque line (T2) may be greater than the first torque line (T1). That is, the torque applied clockwise to the link (40) by the elastic member (76) may be greater than the torque applied counterclockwise to the link (40) by the load (W). The motor (71) and the power transmission member (72) may provide the link (40) with a torque that exceeds the difference between the second torque line (T2) and the first torque line (T1), and as a result, the link (40) may be rotated to a specific angle. That is, the torque transmitted from the motor (71) and the power transmission member (72) to the link (40) can suppress the torque applied to the link (40) in a clockwise direction by the difference between the second torque line (T2) and the first torque line (T1), and can rotate the link (40) to a desired position.

[0096] In the second section (SB), that is, in the section where the link (40) rotates counterclockwise from the first angle (theta 1) to the second angle (theta 2), the first torque line (T1) may be greater than the second torque line (T2). That is, the torque applied counterclockwise to the link (40) by the load (W) may be greater than the torque applied clockwise to the link (40) by the elastic member (76). The motor (71) and the power transmission member (72) can suppress the torque applied counterclockwise to the link (40) by the difference between the first torque line (T1) and the second torque line (T2), and can rotate the link (40) to a desired position.

[0097] In the third section (SC), that is, in the section where the link (40) rotates counterclockwise from the second angle (theta 2) to the third angle (theta 3), the second torque line (T2) may be greater than the first torque line (T1). That is, the torque applied clockwise to the link (40) by the elastic member (76) may be greater than the torque applied counterclockwise to the link (40) by the load (W). The torque transmitted to the link (40) from the motor (71) and the power transmission member (72) can suppress the torque applied clockwise to the link (40) by the amount of the difference between the second torque line (T2) and the first torque line (T1), and can rotate the link (40) to a desired position. The link (40) at the third angle (theta 3) may be the link (40) of FIG. 13.

[0098] Meanwhile, in the third section (SC), the torque applied clockwise to the link (40) by the difference between the second torque line (T2) and the first torque line (T1) can rotate the link (40) of FIG. 13 clockwise together with the torque transmitted to the link (40) from the motor (71) and the power transmission member (72).

[0099] Accordingly, the rotation assembly (70) can smoothly rotate the link (40) counterclockwise or clockwise. In comparison, a rotation assembly that does not have an elastic member (76) may have the difficulty of having to have a relatively large motor to rotate the link (40). Furthermore, a user can respond to various sizes of loads (W) applied to the link (40) by applying different types or elastic coefficients of the elastic member (76) to a specific motor (71).

[0100]

[0101] Referring to FIGS. 1 to 17, a display device may include: a display panel; a bar adjacent to or fixed to the display panel; a link extending long and having one end connected to the bar; a shaft to which the other end of the link is fixed; a motor providing power to rotate the shaft; a pinion fixed to an end of the shaft; a rack movable by engaging the pinion; and an elastic member supporting the rack and capable of stretching in the direction of movement of the rack.

[0102] The shaft may extend in a direction intersecting the longitudinal direction of the link, and the rotational center axis of the pinion may be parallel to the longitudinal axis of the shaft.

[0103] The rack may include: a vertical portion extending in a direction intersecting the rotational center axis of the pinion and having a gear meshing with the pinion; and a horizontal portion intersecting the vertical portion, wherein the elastic member is capable of stretching in the longitudinal direction of the vertical portion and supporting the horizontal portion.

[0104] The display device may further include a supporter opposite the horizontal portion with respect to the elastic member, one end of the elastic member may be positioned on the supporter, and the other end of the elastic member may support the horizontal portion.

[0105] The display device may further include: a worm fixed to the rotational axis of the motor; and a worm wheel meshed with the worm and having the shaft fixed thereto.

[0106] The display device may further include: a base; and a link mount having a pair of plates fixed on the base and spaced apart from each other, wherein the shaft may pass through the pair of plates, and the link may be fixed to the shaft between the pair of plates.

[0107] The link may further include: a first arm fixed to the shaft; a second arm pivotally coupled to the bar; and a joint pivotally coupled between the first arm and the second arm to the first arm and the second arm.

[0108] The display device may further include: a first rotation assembly having the shaft, the motor, the pinion, the rack, and the elastic member; and a second rotation assembly spaced apart from the first rotation assembly, wherein the link may include: a first link connecting one end of the bar and the first rotation assembly; and a second link connecting the other end of the bar and the second rotation assembly.

[0109] The display device may further include: a sensor for detecting the position of the link; and a control unit for controlling the operation of the motor based on information obtained from the sensor.

[0110] The display device may further include: a cover positioned at the rear of the display panel and having one side fixed to the bar; and the cover may further include a roller that is rolled or unrolled, the display panel may have light-transmitting properties, and the link may be pivotally coupled to the bar and may move the bar while rotating.

[0111] The bar may be fixed to one side of the display panel, and the link may be pivotally coupled to the bar and may move the bar while rotating.

[0112] The display panel may be flexible and may further include a roller that allows the display panel to be rolled or unrolled.

[0113]

[0114] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0115] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0116] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. Display panel; A bar adjacent to or fixed to the above display panel; A link which is elongated and has one end joined to the bar; A shaft to which the other end of the above link is fixed; A motor providing power to rotate the above shaft; A pinion fixed to the end of the above shaft; A movable rack meshing with the above pinion; and, A display device that supports the rack and includes an elastic member that is stretchable in the direction of movement of the rack.

2. In paragraph 1, The above shaft, Extending in a direction intersecting the longitudinal direction of the above link, The rotation center axis of the above pinion is, A display device parallel to the longitudinal axis of the above shaft.

3. In paragraph 2, The above rack: A vertical portion having a gear extending in a direction intersecting the rotational center axis of the pinion and meshing with the pinion; and, Including a horizontal section intersecting the above vertical section, The above elastic member is, A display device that is stretchable in the longitudinal direction of the vertical section and supports the horizontal section.

4. In paragraph 3, Further including a supporter opposite the horizontal portion with respect to the elastic member, One end of the above elastic member is positioned on the supporter, The other end of the above elastic member is a display device that supports the horizontal portion.

5. In paragraph 1, A worm fixed to the rotation shaft of the above motor; and, A display device further comprising a worm wheel that is engaged with the worm and to which the shaft is fixed.

6. In paragraph 5, Base; and, Further comprising a link mount having a pair of plates fixed on the base and spaced apart from each other, The above shaft, Penetrating the above pair of plates, The above link is, A display device secured to the shaft between the pair of plates.

7. In paragraph 1, The above link is: A first arm fixed to the above shaft; a second arm pivotally connected to the above bar; and, A display device further comprising a joint pivotally coupled to the first arm and the second arm between the first arm and the second arm.

8. In paragraph 1, A first rotating assembly having the shaft, the motor, the pinion, the rack, and the elastic member; and, Further comprising a second rotating assembly spaced apart from the first rotating assembly, The above link is: A first link connecting one end of the above bar and the first rotating assembly; and, A display device comprising a second link connecting the other end of the bar and the second rotating assembly.

9. In paragraph 1, a sensor for detecting the position of the above link; and, A display device further comprising a control unit that controls the operation of the motor based on information acquired from the sensor.

10. In paragraph 1, A cover positioned at the rear of the above display panel, one side of which is fixed to the above bar; and, The above cover further comprises a roller for winding or unwinding, The above display panel has light-transmitting properties, The above link is, A display device pivotally coupled to the above bar and moving the bar while rotating.

11. In paragraph 1, The above bar is, Fixed to one side of the above display panel, The above link is, A display device pivotally coupled to the above bar and moving the bar while rotating.

12. In paragraph 11, The above display panel is flexible, A display device further comprising a roller for winding or releasing the display panel.

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