WO2011105637A1

WO2011105637A1 - Portable display device

Info

Publication number: WO2011105637A1
Application number: PCT/KR2010/001156
Authority: WO
Inventors: 최광훈
Original assignee: 주식회사 싸이들
Priority date: 2010-02-24
Filing date: 2010-02-24
Publication date: 2011-09-01

Abstract

The present invention aims to provide a portable display device that has a foldable structure, which allows for both easy portability and convenient usage at the same time. To this end, the present invention provides a portable display device that includes a main body case that is equipped with a display panel on the front, a connection stand that is equipped in such a manner that one end thereof can be connected to the back of the main body case, a first hinge unit that is placed between the main body case and the connection stand in order to allow the main body case to rotate around the connection stand, a main cover which is equipped to be connected to the other end of the connection stand, and a second hinge unit that is placed between the main cover and the other end of the connection stand so that the connection stand can be tilted toward the main cover.

Description

Portable display device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable display device, and more particularly, to a portable display device employing a hinge structure capable of being folded.

In general, a display device refers to a device that implements a screen through a display panel.

In the beginning, it started by making large screens by connecting several CRTs such as large TVs for exhibitions.In recent years, they have been used in small portable devices such as mobile phones and personal digital assistants (PDAs), and liquid crystal display (LCD) and field emission Various display panels such as displays, plasma display panels (PDPs), and organic light-emitting diodes (OLEDs) are being developed.

On the other hand, in recent years, a lot of notebooks or other portable terminals using the small display panel as described above are being produced.

However, the notebook or the terminal of such a small display panel has a limitation in increasing the memory capacity due to the small size of the display panel, and it is inconvenient to visually grasp a lot of information at a time.

In addition, the display panel is exposed to the outside in carrying and storage to expose problems such as durability.

Therefore, there is a need for a portable display device that can be directly connected to a memory device and the like while allowing a small notebook or the like to be stably carried.

The present invention has been made to solve the above problems and drawbacks, and provides a portable display device that can be connected to a portable terminal such as a laptop and the like to display a separate screen and at the same time easy to move and use. Its purpose is to.

In order to achieve the above object, the present invention provides a main body case having a display panel on the front and a connecting stand portion and a main body case rotatably around the connection stand portion provided so that one end is connected to the rear of the main body case. A main cover part provided to be connected to the other end of the first hinge unit and the connection stand part provided between the main body case and the connection stand part and the other end of the connection stand part so that the connection stand part can be tilted to the main cover part; And it provides a portable display device comprising a second hinge unit provided between the main cover portion.

Here, the main body case is further provided with a hinge housing that is rotatably installed at a hinge axis perpendicular to the surface of the display panel on the rear side and the first hinge unit is connected, the connecting stand portion can be tilted to the hinge housing Can be hinged.

The auxiliary hinge unit may be further provided between the hinge housing and the connection stand part.

The first hinge unit is preferably given a different rotational force in accordance with the rotation angle between the main body case and the hinge housing.

To this end, the first tilting unit penetrates the shaft cap and the shaft cap and is fixed to the rear of the main body case and is rotated together with the main body case and penetrates the shaft cap and is in close contact with the rotating plate. Including a fixing plate fixed to the hinge housing in the state and the shaft cap and the close contact member for close contact between the fixed plate and the rotating plate and a fixing piece penetrated through the shaft cap and installed at the end of the shaft cap Can be configured.

Here, the fixed plate may be provided with a sliding piece toward the rotation plate side, the rotation plate may be provided with a sliding groove in which the sliding piece is slidably inserted.

The sliding groove may be formed so that the rotation angle of the sliding piece is 90 degrees.

On the other hand, the fixed plate is formed with an uneven portion protruding toward the rotation plate, the rotation plate is stable when the rotation plate is rotated to reach a certain angle when the uneven portion is inserted and the external force does not work. Support grooves to be maintained may be provided.

In this case, the contact member may be a leaf spring to form a ring shape and at the same time to form a wave shape along the circumference.

In addition, it is preferable that the second hinge unit also gives a rotational force differently according to the tilting angle between the connection stand portion and the main cover portion.

To this end, the second hinge unit has a sliding cam having a plurality of first gears and a rotating cam having a plurality of second gears corresponding to the first gear so as to be engaged with the first gear and the sliding by the elastic force. It may include a close contact member for close contact with the cam and the rotary cam.

In addition, the contact member may be a coil spring.

On the other hand, the present invention is a portable display device comprising a main body case having a display panel on the front and a stand unit which is detachably connected to the main body case and foldable so as to conceal the display panel. To provide.

The stand unit includes a detachable part detachably connected to the main body case and a connecting stand part provided to be connected to one end of the detachable part, and the main body case and the connecting stand such that the main body case is rotatable about the connecting stand part. A main cover part provided to be connected to the other end of the first hinge unit and the connection stand part provided between the parts, and between the other end of the connection stand part and the main cover part so that the connection stand part can be tilted to the main cover part. It may include a second hinge unit provided.

The detachable part may further include a hinge housing on the rear surface of the display panel, the hinge housing being rotatably installed at a hinge axis perpendicular to the surface of the display panel, and the first hinge unit installed therein, and the hinge housing tiltable to the connection stand. Can be hinged.

In addition, an auxiliary hinge unit may be further provided between the hinge housing and the connection stand.

The first hinge unit may provide a rotational force differently according to a rotation angle when the detachable part rotates relative to the hinge housing.

To this end, the first tilting unit penetrates the shaft cap and the shaft cap and is fixed to the rear side of the detachable portion and is rotated together with the detachable portion. A fixing plate fixed to the hinge housing and the shaft cap and a close contact member for closely contacting the fixed plate and the rotating plate, and a fixing piece penetrating the shaft cap and installed at an end of the shaft cap. Can be.

The fixed plate may include a sliding piece toward the rotating plate, and the rotating plate may include a sliding groove into which the sliding piece is slidably inserted in close contact with the fixed plate.

On the other hand, the sliding groove may be formed so that the rotation angle of the sliding piece is 90 degrees.

The fixed plate is formed with an uneven portion protruding toward the rotating plate, and the rotating plate is stable when the uneven portion is inserted when the uneven portion does not act when the uneven portion is rotated to reach a predetermined angle. Supporting grooves to be maintained may be provided.

At this time, the contact member may be a leaf spring and at the same time a leaf spring forming a wave shape along the circumference.

In addition, the second hinge unit may impart rotational force differently according to a tilting angle between the connection stand part and the main cover part.

Even in this case, the contact member may be a coil spring.

The portable display device of the present invention configured as described above is more compact than a conventional portable display device, and is easy to carry, and at the same time, the display panel is installed at a predetermined angle when used, thereby making it convenient to use and store.

In addition, the first hinge unit and the second hinge unit is provided with a rotational force during the rotation or tilting operation, it is possible to facilitate the rotation and folding work for adjusting the tilting angle from the body case and the main cover portion to the user There is an effect that can give convenience.

1 is an external perspective view showing a folding state of a portable display device according to a first embodiment of the present invention;

2 is a longitudinal sectional view of the portable display device shown in FIG. 1;

3 is an exploded perspective view showing a disassembled hinge unit in the portable display device according to the first embodiment of the present invention;

4 is an exploded perspective view showing the main configuration of the first hinge unit;

5 is an exploded perspective view showing the main configuration of the second hinge unit;

6 is an external perspective view of the portable display device in which the main body case is extended in the longitudinal direction;

7 is an external perspective view showing a portable display device in which the main body case is unfolded in one direction;

8 is an exploded perspective view of a portable display device according to a second embodiment of the present invention;

9 is a perspective view showing a state in which the stand unit and the main body case in FIG.

10 is an external perspective view showing a state in which the stand unit and the main body case are coupled according to the second embodiment of the present invention;

11 is a perspective view showing a state in which a main body case is rotated in the portable display device according to the second embodiment of the present invention;

12 is an exploded perspective view of a portable display device according to a third embodiment of the present invention;

Figure 13 is a perspective view showing a state in which the stand unit and the main body case in Figure 8 coupled;

14 is a perspective view illustrating a state in which a main body case is rotated in the portable display device according to the third embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of this embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted.

1 is an external perspective view illustrating a folded state of a portable display device according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the portable display device shown in FIG. 1, and FIG. An exploded perspective view of a portable display device according to a first embodiment of the invention.

As shown, the display device according to the first embodiment of the present invention is composed of a main body case 110, the connection stand 120 and the main cover portion 130 to form an appearance.

The front of the main body case 110 is provided with a display panel 111 to display an image.

In addition, one end of the connection stand part 120 is connected to the rear surface of the main body case 110, and the other end of the connection stand part 120 is connected to one side of the main cover part 130.

As shown in FIG. 2, the main body case 110, the connection stand 120, and the main cover part 130 are connected to each other to allow relative rotation, that is, to be folded.

To this end, a hinge housing 125 is provided on the rear surface of the main body case 110, and one end of the connection stand 120 is connected to the auxiliary hinge unit 150 to allow relative rotation to the hinge housing 125. Is connected.

In addition, a first hinge unit 140 is provided between the hinge housing 125 and the rear surface of the main body case 110.

Here, the first hinge unit 140 is the hinge housing 125 is connected to the main body case 110, so that the main body case 110 is rotated while giving a predetermined rotational force around its center. It plays a role.

In addition, the main cover part 130 is connected to the other end of the connection stand 120 by a second hinge unit 160 to allow relative rotation.

In addition, a side of the main body case 110 is provided with a separate connection port 117 to be connected to the notebook or a separate memory device and the like to receive information or power.

The figure shows a connection port to which a general USB jack is connected, and of course, a connection port connected to an adapter or the like may be provided.

Hereinafter, the first hinge unit and the second hinge unit will be described in more detail.

4 is an exploded perspective view showing a first hinge unit in the portable display device of the present invention.

As shown in FIG. 4, the first hinge unit 140 is to give the rotational force differently according to the rotation angle when the main body case 110 is rotated about the central axis of the hinge housing 125. To this end, the first hinge unit 140 is rotated to penetrate the shaft cap 141 and the shaft cap 141 and to be fixed to the rear surface of the main body case 110 to rotate together with the main body case 110. Plate 144 is provided.

In addition, the fixing plate 143 and the shaft cap 141 are fixed to the hinge housing 125 while being penetrated by the shaft cap 141 and being in close contact with the rotating plate 144. 143 is provided with a close contact member 142 in close contact with the rotating plate 144, the fixing piece 149 which is penetrated through the shaft cap 141 and installed on the end of the shaft cap 141 is provided do.

In addition, the fixed plate 143 is provided with a sliding piece 145 toward the rotation plate 144, the rotation plate 144 is a sliding groove 146 is inserted into the sliding piece 145 to be slidable It is provided.

Here, the sliding groove 146 is preferably formed so that the rotation angle of the sliding piece 145 is 90 degrees, which is the main body case 110 is rotated 90 degrees about the center of gravity and the longitudinal direction and unidirectional arrangement This is to easily select and apply one of the batches.

At this time, the main body case 110 is provided with a seating portion 114 on which the first hinge unit 140 is mounted, and the sliding piece 145 is inserted into a position and a shape corresponding to the sliding groove 146. The auxiliary sliding groove 115 is preferably moved to be provided.

In this way, the sliding piece 145 can have a length sufficient to be inserted into the main body case 110, the relatively stable rotation and fixing operation of the main body case 110 from the hinge housing 125 Work is possible.

In addition, the fixing plate 143 is formed with an uneven portion 147 protruding toward the rotation plate 144, the rotation plate 144 is the rotation plate 144 is rotated when the angle reaches a certain angle When the uneven portion 147 is inserted and no external force is applied, the support groove 148 is provided to stably maintain the inserted state.

Here, the position of the uneven portion 147 and the support groove 148 will be provided between the body case 110 is positioned in the longitudinal direction and in the unidirectional direction, that is, between 90 degrees.

In addition, the adhesion member 142 serves to maintain a state in which the fixed plate 143 and the rotation plate 144 fitted to the shaft cap 141 are in close contact with each other, forming a ring shape and simultaneously along the circumference. It is preferable that it consists of a plate-shaped spring which forms a wave shape.

That is, as shown, a wave shape having a gap of a predetermined length h is formed along the circumference.

As shown in Figure 4, by configuring the contact member 142 with a plate-like spring it is possible to compactly configure the first hinge unit 140 installed in the hinge housing 125, which is the present invention portable display The compactness of the device is also brought about.

Reference numeral 143h is a coupling hole for coupling the fixing plate 143 to the hinge housing 125, and 144h is a coupling hole for coupling the rotating plate 144 to the rear surface of the body case 110.

Next, with reference to the accompanying Figure 5, a specific configuration of the second hinge unit 160 will be described.

5 is an exploded perspective view of the second hinge unit.

The second hinge unit 160 is a component that imparts rotational force in the direction in which the body case 110 is tilted. As shown in FIG. 5, the sliding cam 164 and the rotation cam 165 are basically provided. ) And an adhesion member 163.

The rotary cam 165 has a plurality of gears, and the sliding cam 164 has a plurality of gears corresponding to the gears of the rotary cam 165 to engage with the gears of the rotary cam 165.

In addition, the close contact member 163 is made of a spring wound in the form of a coil, serves to closely contact the sliding cam 164 and the rotary cam 165.

On the other hand, the sliding cam 164, the rotary cam 165 and the contact member 163 is accommodated in the receiving groove across the one end of the connecting stand 120, the sliding cam 164, the rotary cam 165 And the contact member 163 is a shaft 161 through the center.

In addition, the shaft 161 is fixed to one end of the housing 168 by the washer 162 and the fixing member 166, in particular the sliding cam 164 is fixed at a predetermined position in the receiving groove.

The second hinge unit 160 configured as described above is in close contact with the sliding cam 164 and the rotary cam 165 by the elastic force in the longitudinal direction of the contact member 163, the sliding cam 164 and the rotary cam. Sleeping occurs between the inclined surface of 165, the rotational force is generated, and by this rotational force the main body case 110 can be rotated by a constant rotational force from the main cover portion 130.

Referring to the operation of the display device of the present invention configured as described above are as follows.

As shown in FIG. 1, in a folded state, the user carries the portable display device 100 of the present invention.

In this case, both the connection stand 120 and the main cover 130 are kept in close contact with the main body case 110, that is, the folded state.

That is, since the display panel 111 is located inside the main cover part 130 in the folded state, the user can carry and move without fear of damage.

And, as shown in Figure 6, in order to use the portable display device of the present invention, the main body case 110 in the folded state is lifted.

In this case, the connection stand 120 is opened by the relative rotation from the main cover portion 130 by the second hinge unit 160.

When the connection stand part 120 is opened with the main cover part 130 at a sufficient angle, the main body part 110 again has a constant angle with the connection stand part 120 using the auxiliary hinge unit 150. To tilt.

Here, the constant angle refers to an angle that reaches the state where the end of the connection stand 120 is caught on the stepped portion provided at the lower bent portion of the hinge housing 125 so that rotation is no longer possible.

Then, when the lower portion of the main body case 110 rotates with respect to the second hinge unit 160 so as to contact the main cover portion 130, the installation for use is completed.

After installing the main body case 110 as described above, a separate cable or the like can be connected to other electronic devices such as a power source or a notebook through the connection port 117.

Meanwhile, as shown in FIG. 7, the main body case 110 is rotated by using the hinge housing 125 to change the longitudinal and unidirectional directions of the display panel 111. It can also be used in a state.

In particular, the portable display device of the present invention has the effect that the operation of the operation is smooth due to the first hinge unit and the second hinge unit to which a predetermined rotational force is applied during the folding operation or the rotation of the main body case.

Hereinafter, a portable display device according to a second exemplary embodiment of the present invention will be described with reference to FIGS. 8 to 10.

8 is an exploded perspective view of the portable display device according to the second embodiment of the present invention, Figure 9 is a view showing a state in which the stand unit and the main body case in the portable display device shown in FIG. 10 is a perspective view illustrating a stand unit and a main body case combined in a portable display device according to a second embodiment of the present invention.

As shown, the portable display device according to the second embodiment of the present invention includes a main body case 110 having a display panel 111 and a stand unit 200 detachably coupled to the main body case 110. .

Here, the stand unit 200 includes a detachable part 180 detachably connected to the main body case 110 and a connection stand part 120 provided to be connected to one end of the detachable part 180.

The detachable part 180 is provided with a fixing groove 113 at a position and a number that can be combined with the main body case 110 at the top / bottom or left / right side of the main body case 110, and the detachable part ( The fixing jaw portion 183 is provided at 180.

8 to 10 shows a detachable part provided with a body part having a tricycle shape and three fixing jaw portions 183 at each end of the tricycle.

In addition, the first hinge unit 140 and the connection provided between the main body case 110 and the connecting stand 120 so that the main body case 110 is rotatable about the connecting stand 120. The other end of the main stand portion 130 and the connection stand 140 is provided to be connected to the other end of the stand portion 140 and the connection stand 140 so that the main cover portion 130 can be tilted. It includes a second hinge unit 160 provided between the main cover portion 130.

Also in this case, as in the first embodiment of the present invention, the main body case 110, the connection stand 120 and the main cover 130, respectively, the relative rotation is possible, that is, in a state capable of folding Connected to achieve.

To this end, a hinge housing 125 is provided on a rear surface of the detachable part 180, and one end of the connection stand 120 is connected to the auxiliary hinge unit 150 to allow relative rotation to the hinge housing 125. Is connected.

In addition, a first hinge unit 140 is provided between the hinge housing 125 and the rear surface of the detachable part 180, as in the first embodiment.

Here, the first hinge unit 140, the hinge housing 125 is connected to the detachable portion 180, the detachable portion 180 can be rotated while giving a predetermined rotational force around the center thereof. It has a role to do.

In the second embodiment of the present invention, the structures of the first hinge unit and the second hinge unit are the same as those of the first embodiment, and the detailed description thereof will be omitted.

On the other hand, in the second embodiment of the present invention such that the sliding section 145 is inserted into the removable sliding portion 145 in the position and shape corresponding to the sliding groove 146, so that the auxiliary sliding groove 185 is provided. It is preferable to.

Referring to the operation of the portable display device according to the second embodiment of the present invention configured as described above are as follows.

In the case of the portable display device according to the second embodiment of the present invention, as in the first embodiment, the main body case 110 can be rotated around the hinge housing 125, and the second hinge unit Tilting operation via 160 is also possible.

Furthermore, the stand unit 200 may be separated from the main body case 110 and only the main body case 110 may be used.

In particular, the storage of only the stand unit 200 can also be in a folded state, so that the possession becomes simple.

In addition, as shown in Figure 11, it is possible to use in a state that is mounted by rotating the main body case 110.

12 to 14 show a portable display device according to a third embodiment of the present invention.

12 is an exploded perspective view of a portable display device according to a third embodiment of the present invention, Figure 13 is an external perspective view showing a state in which the stand unit and the main body case is coupled according to a third embodiment of the present invention 14 is an external perspective view showing a state in which a main body case is rotated in the portable display device according to the third embodiment of the present invention.

The portable display device according to the third embodiment of the present invention also includes a main body case 210 in which the display panel 211 is provided at the front side and a stand unit 222 detachably connected to the main body case 210.

Here, the stand unit 222 includes a connection stand 220, a main cover part 230, and a detachable part 280 provided with a hinge housing 225 on which the first hinge unit 140 is installed.

In addition, the detachable portion 280 is formed in a shape corresponding to the longitudinal direction over a predetermined section of the rear side of the main body case 210, one end of the detachable portion 280 of the main body case 210 A seating portion 281 is provided to allow both ends to be seated.

As shown, the detachable portion 280 is preferably formed to cross the central portion of the rear side of the main body case 210.

And, although not shown in detail, the other end portion 288 of the detachable portion 280 is provided with a torsion hinge unit is applied to the torsion spring so that the coupling operation of the main body case 210 and the maintenance of the coupled state is made stable Is preferred.

In addition, in the third embodiment of the present invention, as in the first and second embodiments described above, the first hinge unit 140 and the second hinge unit 160 are also applied. Since the embodiments and the second embodiment have been described in detail, the description thereof will be omitted.

As described above, the preferred embodiments of the present invention have been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them.

Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

For example, in the above embodiments, the second hinge unit 160 may be applied to the auxiliary hinge unit 150, in which case the auxiliary hinge unit and the second hinge unit 160 are folded. And it may be desirable to be advantageous in the unfolding operation, that is to be applied to the rotational force in the same direction during folding or unfolding operation.

The portable display device of the present invention configured as described above is more compact than a conventional portable display device, and is easy to carry, so that the display panel is installed at a predetermined angle when used at the same time.

In addition, the first hinge unit and the second hinge unit is provided with a rotational force during the rotation or tilting operation, it is possible to facilitate the rotation and folding work for adjusting the tilting angle from the main body case and the main cover portion to the user There is an effect that can give convenience.

Claims

Body case provided with a display panel on the front;

A connection stand part having one end connected to a rear surface of the main body case;

A first hinge unit provided between the main body case and the connection stand part such that the main body case is rotatable about the connection stand part;

A main cover part provided to be connected to the other end of the connection stand part; And

A second hinge unit provided between the other end of the connection stand part and the main cover part such that the connection stand part can be tilted;

Portable display device comprising a.
The method of claim 1,

The main body case further includes a hinge housing, which is rotatably installed at a hinge axis perpendicular to the surface of the display panel at the same time, and at which the first hinge unit is installed.

And the hinge housing is hingedly coupled to the connection stand portion.
The method of claim 2,

And a subsidiary hinge unit between the hinge housing and the connection stand.
The method of claim 2,

The first hinge unit,

The main body case is a portable display device, characterized in that to give a different rotational force in accordance with the rotation angle when the relative rotation around the hinge housing.
The method of claim 2,

The first tilting unit,

Shaft cap;

A rotating plate which is penetrated by the shaft cap and fixed to the rear of the main body case and rotates together with the main body case;

A fixing plate which is penetrated by the shaft cap and fixed to the hinge housing while being in close contact with the rotating plate;

A close contact member penetrating the shaft cap and bringing the fixed plate and the rotating plate into close contact with each other; And

A fixing piece penetrating through the shaft cap and installed at an end of the shaft cap;

Portable display device comprising a.
The method of claim 5,

The fixed plate is provided with a sliding piece toward the rotation plate side,

The rotating plate is a portable display device characterized in that the sliding groove is provided with the sliding piece is slidably inserted when in close contact with the fixed plate.
The method of claim 6,

The sliding groove,

Portable display device, characterized in that formed so that the rotation angle of the sliding piece is 90 degrees.
The method of claim 5,

The fixed plate is formed with an uneven portion protruding toward the rotating plate side,

The rotating plate is a portable display device, characterized in that the support plate for maintaining the inserted state stably when the rotation plate is rotated to reach a certain angle when the uneven portion is inserted and the external force is not applied.
The method of claim 5,

The contact member,

A portable display device comprising a leaf spring and a leaf spring having a wave shape along a circumference.
The method of claim 1,

The second hinge unit,

Portable display device, characterized in that to give a different rotational force in accordance with the tilting angle between the connection stand and the main cover.
The method of claim 1,

The second hinge unit,

A sliding cam having a plurality of first gears;

A rotary cam having a plurality of second gears corresponding to the first gears to be engaged with the first gears; And

A close contact member which closely contacts the sliding cam and the rotary cam by an elastic force;

Portable display device comprising a.
The method of claim 11,

The contact member,

Portable display device, characterized in that the coil spring.
Body case provided with a display panel on the front; And

A stand unit detachably attached to the main body case and foldable to conceal the display panel;

Portable display device comprising a.
The method of claim 13,

The stand unit,

A detachable part detachably connected to the main body case;

A connection stand portion having one end portion connected to the detachable portion;

A first hinge unit provided between the main body case and the connection stand part such that the main body case is rotatable about the connection stand part;

A main cover part provided to be connected to the other end of the connection stand part; And

A second hinge unit provided between the other end of the connection stand part and the main cover part such that the connection stand part can be tilted;

Portable display device comprising a.
The method of claim 14,

The detachable part may further include a hinge housing on the rear surface of the display panel, the hinge housing being rotatably installed at a hinge axis perpendicular to the surface of the display panel, and at the same time the first hinge unit is installed.

And the hinge housing is hingedly coupled to the connection stand portion.
The method of claim 15,

And a subsidiary hinge unit between the hinge housing and the connection stand.
The method of claim 15,

The first hinge unit,

The detachable part of the portable display device, characterized in that to give a different rotational force in accordance with the rotation angle when the relative rotation around the hinge housing.
The method of claim 15,

The first tilting unit,

Shaft cap;

A rotating plate which is penetrated by the shaft cap and fixed to the rear of the detachable part and rotates together with the detachable part;

A fixing plate which is penetrated by the shaft cap and fixed to the hinge housing while being in close contact with the rotating plate;

A close contact member penetrating the shaft cap and bringing the fixed plate and the rotating plate into close contact with each other; And

A fixing piece penetrating through the shaft cap and installed at an end of the shaft cap;

Portable display device comprising a.
The method of claim 18,

The fixed plate is provided with a sliding piece toward the rotation plate side,

The rotating plate is a portable display device characterized in that the sliding groove is provided with the sliding piece is slidably inserted when in close contact with the fixed plate.
The method of claim 19,

The sliding groove,

Portable display device, characterized in that formed so that the rotation angle of the sliding piece is 90 degrees.
The method of claim 18,

The fixed plate is formed with an uneven portion protruding toward the rotating plate side,

The rotating plate is a portable display device, characterized in that the support plate for maintaining the inserted state stably when the rotation plate is rotated to reach a certain angle when the uneven portion is inserted and the external force is not applied.
The method of claim 14,

The second hinge unit,

Portable display device, characterized in that to give a different rotational force in accordance with the tilting angle between the connection stand and the main cover.
The method of claim 14,

The second hinge unit,

A sliding cam having a plurality of first gears;

A rotary cam having a plurality of second gears corresponding to the first gears to be engaged with the first gears; And

A close contact member which closely contacts the sliding cam and the rotary cam by an elastic force;

Portable display device comprising a.
The method of claim 14,

The detachable part,

Portable display device further comprises a torsion hinge unit at the end.