Display device
地域：
Yongin-Si
摘要
A display device includes a first guide member extending in a first direction, a second guide member extending in the first direction and facing the first guide member in a second direction crossing the first direction, a display panel disposed between the first guide member and the second guide member, a support member which supports a portion of the display panel, a first driving unit which moves the support member, and a second driving unit connected to one end of the display panel to roll or unroll the display panel. Both sides of the support member are inserted into guide grooves defined in an inner side surface of the first guide member and an inner side surface of the second guide member, which faces the inner side surface of the first guide member, and the support member moves along the guide grooves.
說明書
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This application claims priority to Korean Patent Application No. 10-2018-0096976, filed on Aug. 20, 2018, and all the benefits accruing therefrom under 35 U.S.C. § 119, the content of which in its entirety is herein incorporated by reference.
The disclosure relates to a display device.
Electronic devices that display an image, such as a smart phone, a digital camera, a laptop computer, and a smart television, may include a display device to display the image. The display device generates the image and provides the image to the user through a display screen thereof.
In recent years, with the development of display device technology, various types of display devices including a flexible display device that is foldable or rollable have been developed. The flexible display device, which is capable of being varied in various shapes, is easy to carry and improves a user's convenience.
A flexible display device may include a flexible display panel, which is rolled or unrolled. However, when the rolled flexible display panel is unrolled, the display panel may not be substantially flat. Accordingly, a technique that improves a flatness of the unrolled display panel is desired.
The disclosure provides a display device capable of improving a flatness of a display panel.
權(quán)利要求
What is claimed is:1. A display device comprising:a first guide member extending in a first direction; a second guide member extending in the first direction and facing the first guide member in a second direction crossing the first direction; a display panel disposed between the first guide member and the second guide member, the display panel defined by an upper major surface plane and a lower major surface plane and a length of both the upper and lower major surface planes extend from a first end to an opposite second end; a support member which supports an unrolled portion of the display panel and is separated from a rolled portion of the display panel; a first driving unit which moves the support member; and a second driving unit connected to one end of the display panel to roll or unroll the display panel, wherein both sides of the support member are inserted into guide grooves defined in an inner side surface of the first guide member and an inner side surface of the second guide member, which faces the inner side surface of the first guide member, the support member moves along the guide grooves, and the first driving unit and the second driving unit are both located under the lower major surface plane and at the second end of the display panel in a top plan view. 2. The display device of claim 1 , wherein the first and second driving units are arranged in the first direction, extend in the second direction, and connected to the first and second guide members. 3. The display device of claim 1 , wherein the first and second driving units rotate in a same direction with respect to a rotation axis substantially parallel to the second direction. 4. The display device of claim 1 , further comprising:a third guide member extending in the second direction and connected to one end of the first guide member and one end of the second guide member; and a fourth guide member extending in the second direction and connected to the other end of the first guide member and the other end of the second guide member, wherein the second driving unit is disposed closer to the fourth guide member than the first driving unit is, the display panel connected to the second driving unit extends toward the third guide member, and the guide groove extends from an area adjacent to the first driving unit to the third guide member. 5. The display device of claim 4 , wherein the display panel comprises:a first portion which moves along the first and second guide members and is exposed to an outside; and a second portion extending from the first portion, not exposed to the outside, and rolled on the second driving unit, wherein the support member is disposed under the first portion to support the first portion and separated from the second portion. 6. The display device of claim 5 , further comprising:a window disposed on the first portion, wherein the window contacts the first portion of the display panel and is spaced apart from the second portion of the display panel; and a third driving unit connected to one end of the window spaced apart from the second portion to roll a portion of the window, which is spaced apart from the second portion, wherein the first, second and third driving units are arranged in the first direction, extend in the second direction, and rotate in a same direction as each other with respect to a rotation axis substantially parallel to the second direction, and the third driving unit is disposed closer to the fourth guide member than the second driving unit is. 7. The display device of claim 6 , further comprising:a coupling portion which fixes the other end of the display panel, the other end of the window, and an end of the support member overlapping the other end of the display panel to each other and moves along the first and second guide members. 8. The display device of claim 6 , further comprising:a functional layer disposed on each of an upper surface of the display panel and a lower surface of the window, which faces the upper surface of the display panel. 9. The display device of claim 8 , wherein the functional layer comprises a fluorine. 10. The display device of claim 1 , wherein the guide groove comprises:a first extension portion extending in the first direction; a second extension portion disposed under the first extension portion, extending in the first direction, and having a length smaller than a length of the first extension portion; a third extension portion extending in the first direction, having a length smaller than the length of the first extension portion, and disposed between the first extension portion and the second extension portion; a first curved portion extending from one end of the first extension portion to one end of the second extension portion in a curved shape; and a second curved portion extending from the other end of the second extension portion to the other end of the third extension portion, which is opposite to one end of the third extension portion, in a curved shape, the one end of each of the first, second, and third extension portions is disposed adjacent to the first driving unit, a direction in which the first curved portion is curved is opposite to a direction in which the second curved portion is curved, and the first driving unit is disposed adjacent to the first curved portion. 11. The display device of claim 10 , wherein the support member comprises a plurality of joint units which extends in the second direction, is arranged in the first direction, and is coupled to each other to rotate. 12. The display device of claim 11 , further comprising:a magnetic layer disposed on a lower surface of the display panel and a surface of the joint units. 13. The display device of claim 12 , wherein the magnetic layer comprises a ferrite or a rare earth element. 14. The display device of claim 11 , wherein the first driving unit comprises:a rotation axis unit extending in the second direction; and a gear unit disposed on an outer circumferential surface of a predetermined portion of the rotation axis unit, wherein an opening is defined in each of a predetermined number of joint units among the joint units, and a protrusion of the gear unit is inserted into the opening defined in a joint unit of the predetermined number of joint units, which is in the first curved portion. 15. The display device of claim 14 , wherein a width of the protrusion of the gear unit, which is defined in the first direction, is smaller than a width of the opening defined in the first direction. 16. The display device of claim 14 , wherein each of the joint units comprises:a body portion extending in the second direction; a first protrusion portion protruded from one end of the body portion to the first direction; a second protrusion portion protruded from an upper end of the other end of the body portion to the first direction; a third protrusion portion protruded from a lower end of the other end of the body portion to the first direction; and a groove portion defined between the second protrusion portion and the third protrusion portion, wherein the first protrusion portion of an h-th joint unit is inserted into the groove portion of an (h+1)-th joint unit, wherein h is a natural number, and the opening is defined in each of the predetermined number of joint units as extending from a predetermined portion of the body portion thereof to an end of the first protrusion portion thereof in the first direction. 17. The display device of claim 16 , wherein a width of the second protrusion portion in the first direction is greater than a width of the third protrusion portion in the first direction. 18. The display device of claim 16 , wherein a first distance between an end of the third protrusion portion of the (h+1)-th joint unit and a lower end of the body portion of the h-th joint unit is larger than a second distance between an end of the second protrusion portion of the (h+1)-th joint unit and an upper end of the body portion of the h-th joint unit. 19. The display device of claim 16 , wherein the first protrusion portion comprises:a concave portion extending in the first direction from the one end of the body portion and comprising upper and lower surfaces which are concaved when viewed in a plan view in the second direction; and a convex portion extending in the first direction from the concave portion and having an oval-like shape when viewed in the plan view in the second direction, wherein the groove portion has a shape corresponding to the concave portion and the convex portion. 20. The display device of claim 16 , whereinthe second protrusion portion has a same width as a width of the third protrusion portion, and the second protrusion portion has a symmetrical shape with. 21. The display device of claim 11 , further comprising:a plurality of connection units disposed on both side surfaces of the joint units opposite to each other with respect to the second direction to connect the joint units to rotate. 22. The display device of claim 10 , further comprising:a window in contact with a portion of the display panel and spaced part from another portion of the display panel; and a third driving unit connected to one end of the window spaced apart from the display panel to roll the portion of the window, which is spaced apart from the display panel, thereon, wherein the third driving unit is disposed adjacent to the second curved portion, and the first and second curved portions and the first driving unit are disposed between the second driving unit and the third driving unit. 23. The display device of claim 1 , wherein the guide groove further comprises:a first extension portion extending in the first direction; a second extension portion disposed under the first extension portion, extending in the first direction, and having a length smaller than a length of the first extension portion; a third extension portion extending in the first direction, having a length smaller than the length of the first extension portion, and disposed under the second extension portion; a fourth extension portion extending in the first direction, having a length smaller than the length of the first extension portion, and disposed under the third extension portion; a first curved portion extending from one end of the first extension portion to one end of the second extension portion in a curved shape; a second curved portion extending from the other end of the second extension portion to the other end of the third extension portion, which is opposite to one end of the third extension portion, in a curved shape; and a third curved portion extending from the one end of the third extension portion to one end of the fourth extension portion, which is adjacent to the one end of the third extension portion, in a curved shape, the one end of each of the first, second, and third extension portions is disposed adjacent to the first driving unit, a direction in which the first curved portion is curved is opposite to a direction in which the second curved portion is curved, a direction in which the third curved portion is curved is the same as the direction in which the first curved portion is curved, and the first driving unit is disposed adjacent to the first curved portion. 24. The display device of claim 1 , wherein the guide groove comprises:a first extension portion extending in the first direction; a second extension portion disposed under the first extension portion, extending in a direction that forms an angle smaller than about 90 degrees with respect to the first direction, and having a length smaller than a length of the first extension portion; a third extension portion disposed under the second extension portion, extending in the first direction, having a length smaller than the length of the first extension portion; a first curved portion extending from one end of the first extension portion to one end of the second extension portion in a curved shape; and a second curved portion extending from the other end of the second extension portion to the other end of the third extension portion, which is opposite to one end of the third extension portion, in a curved shape, the one end of each of the first, second, and third extension portions is disposed adjacent to the first driving unit, a direction in which the first curved portion is curved is opposite to a direction in which the second curved portion is curved, and the first driving unit is disposed adjacent to the first curved portion. 25. A display device comprising:a display panel; a support member disposed under the display panel; a first driving unit coupled to a predetermined portion of the support member to move the support member; a second driving unit connected to one end of the display panel to roll or unroll the display panel; a window disposed on an unrolled portion of the display panel and spaced apart from a rolled portion of display panel; and a third driving unit connected to one end of the window spaced apart from the display panel to roll a portion of the window, which is spaced apart from the display panel, wherein the support member supports a flat and an unrolled portion of the display panel and does not overlap a rolled portion of the display panel in a thickness direction of the unrolled portion of the display panel, the thickness direction is defined by a distance between major upper and lower surface planes defining the flat and unrolled portion of the display panel in a top plan view, the second driving unit is disposed between the first driving unit and the third driving unit, and the first, second, and third driving units rotate in a same direction as each other. 26. The display device of claim 25 , further comprising:a first guide member extending in a first direction; a second guide member extending in the first direction and facing the first guide member in a second direction crossing the first direction; a third guide member extending in the second direction and connected to one end of the first guide member and one end of the second guide member; and a fourth guide member extending in the second direction and connected to the other end of the first guide member and the other end of the second guide member, wherein the display panel, the window, the support member, and the first, second, and third driving units are disposed between the first guide member and the second guide member, the first, second, and third driving units are disposed adjacent to the fourth guide member, the display panel and the window, which are respectively connected to the second and third driving units, are disposed to face the third guide member, the first, second, and third driving units are arranged in the first direction, extend in the second direction, are connected to the first and second guide members, the third driving unit is disposed closer to the fourth guide member than the first and second driving units are, both sides of the support member are inserted into guide grooves defined in an inner side surface of the first guide member and an inner side surface of the second guide member, which faces the inner side surface of the first guide member, and the support member moves along the guide grooves. 27. The display device of claim 26 , wherein the guide groove comprises:a first extension portion extending in the first direction; a second extension portion disposed under the first extension portion, extending in the first direction, and having a length smaller than a length of the first extension portion; a third extension portion extending in the first direction, having a length smaller than the length of the first extension portion, and disposed between the first extension portion and the second extension portion; a first curved portion extending from one end of the first extension portion to one end of the second extension portion in a curved shape; and a second curved portion extending from the other end of the second extension portion to the other end of the third extension portion, which is opposite to one end of the third extension portion, in a curved shape, the one end of each of the first, second, and third extension portions is disposed adjacent to the first driving unit, a direction in which the first curved portion is curved is opposite to a direction in which the second curved portion is curved, and the first driving unit is disposed adjacent to the first curved portion. 28. The display device of claim 27 , whereinthe support member comprises a plurality of joint units which extends in the second direction, is arranged in the first direction, and is coupled to each other to rotate, the first driving unit comprises: a rotation axis unit extending in the second direction; and a gear unit disposed on an outer circumferential surface of a predetermined portion of the rotation axis unit, wherein an opening is defined in each of a predetermined number of joint units among the joint units comprise, a protrusion of the gear unit is inserted into the opening defined in a joint unit of the predetermined number of joint units in the first curved portion, and a width of the protrusion of the gear unit, which is defined in the first direction, is smaller than a width of the opening defined in the first direction. 29. The display device of claim 28 , wherein each of the joint units comprises:a body portion extending in the second direction; a first protrusion portion protruded from one end of the body portion to the first direction; a second protrusion portion protruded from an upper end of the other end of the body portion to the first direction; a third protrusion portion protruded from a lower end of the other end of the body portion to the first direction; and a groove portion defined between the second protrusion portion and the third protrusion portion, wherein the first protrusion portion of an h-th joint unit is inserted into the groove portion of an (h+1)-th joint unit, wherein h is a natural number, and the opening of each of the predetermined number of joint units is defined as extending from a predetermined portion of the body portion thereof to an end of the first protrusion portion thereof in the first direction. 30. A display device comprising:a first guide member; a second guide member facing the first guide member; a display panel disposed between the first guide member and the second guide member; a plurality of joint units which supports a flat and an unrolled portion of the display panel and is coupled to each other to rotate, and does not overlap a rolled portion of the display panel in a thickness direction of the flat and unrolled portion of the display panel, the thickness direction is defined by a distance between major upper and lower surface planes defining the flat unrolled portion of the display panel relative to a top plan view; a first driving unit which moves the joint units; and a second driving unit connected to one end of the display panel to roll or unroll the display panel, both sides of the joint units are inserted into guide grooves defined in an inner side surface of the first guide member and an inner side surface of the second guide member, which faces the inner side surface of the first guide member, and the joint units move along the guide grooves.
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