WO2021060571A1

WO2021060571A1 - Portable electronic device

Info

Publication number: WO2021060571A1
Application number: PCT/KR2019/012378
Authority: WO
Inventors: 권해옥; 강동균; 이낙곤; 인정근
Original assignee: 엘지전자 주식회사
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2021-04-01

Abstract

A portable electronic device according to the present invention comprises a hinge unit for hinge-coupling a system body to a display unit, the hinge unit including a first hinge unit installed on the system body and a second hinge unit installed on the display unit. The first hinge unit forms a hinge shaft inside the system body and is connected to the display unit such that an extension unit and a fastening bracket form an L-shape in a state where a hinge shaft of the second hinge unit is hinge-coupled to the hinge shaft formed by the first hinge unit, thereby providing effects of allowing the display unit to be completely folded on the system body and reducing a vertical size of the electronic device.

Description

Portable electronic device

The present invention relates to a portable electronic device, and more particularly, to a portable electronic device in which a display unit displaying an image and a system body are hingedly coupled to each other, such as a laptop computer.

In general, in the case of a portable electronic device having a structure in which a display unit displaying an image is folded and unfolded on a system body, such as a laptop computer, a hinge structure for rotating the display unit with respect to the system body is generally applied.

The recent trend of portable electronic devices is pursuing high performance and slimming, and efforts are being made to minimize the size of the bezel of the display unit so that the horizontal and vertical size of the display unit is approximately the same as the screen size.

The hinge structure rotates the display unit to the system body by a mechanical mechanism, and it is acting as a limitation in reducing the vertical size of the portable electronic device due to the limitation of the mechanical structure.

1 is a schematic diagram showing a hinge structure of a typical laptop computer. 1A is a view showing a state in which the display unit is folded to the system main body, and Fig. 1B is a view showing a state in which the display unit is unfolded from the system main body at a predetermined angle.

As shown in (a) of FIG. 1, in order to completely fold the display unit to the system body, the rotation axis of the hinge module is located a little higher upwards than the system body, and as a result, the hinge module outside the system body It has a structure in which it is located, and acts as a factor to increase the length of the laptop computer in the vertical direction.

Accordingly, there is a need to develop a hinge structure capable of reducing the length in the vertical direction of a portable electronic device such as a laptop computer by overcoming the above structural limitations.

An object of the present invention is to provide a portable electronic device capable of reducing the length in the vertical direction when the display unit is folded to the system body in a portable electronic device hingedly coupled to a display unit displaying an image, such as a laptop computer. There is this.

Another object of the present invention is to provide a portable electronic device capable of simplifying a cable structure by configuring a signal cable connecting a display unit and a system body to be connected through a hinge structure.

Another object of the present invention is to provide a portable electronic device capable of preventing the system main body from being heard by one end of the display unit by restricting the display unit to rotate at a certain angle with respect to the system main body.

A portable electronic device according to an embodiment of the present invention includes a display unit, a system body comprising an upper case and a lower case, and a hinge unit forming a hinge axis under the lower surface of the upper case and allowing the display unit to rotate with respect to the system body. Includes; The hinge unit includes a hinge shaft, and a fastening bracket having one side connected to the hinge shaft and the other side fastened to the inner plate surface of the display unit, and the hinge axis is inside the system body, that is, at the bottom of the bottom surface of the upper case. As a result, it is possible to reduce the size of the portable electronic device in the vertical direction.

The fastening bracket may have an L-shape, including an extension part extending from the hinge shaft toward a plate surface of the display part, and a fastening part bent from the extension part and fastened to an inner plate surface of the display part.

When the display part covers the system body, the extension part extends from the hinge shaft to a length that allows the display part and the system body to face each other so that the display part completely covers the system body.

The fastening bracket may be integrally formed with the hinge shaft.

The hinge shaft has a hollow cylindrical shape, and a signal cable connecting the system body and the display unit from the system body through the interior of the hinge shaft extends from the system body through the inner space of the hinge shaft. The system body and the display unit may be electrically connected.

The hinge unit is hinge-coupled with the hinge shaft in the system body to form the hinge shaft, at least one hinge insertion ring into which the hinge shaft is inserted, and one side is connected to the hinge insertion ring, and the other side is inside the system body. It may further include a fastening plate fastened to.

In another example, the hinge unit includes at least one hinge insertion ring into which the hinge shaft is inserted so that one side is hingedly coupled with the hinge shaft to form the hinge shaft, and one side is the hinge shaft inside the system body. It may further include a fastening plate connected to and the other side is fastened to the inside of the system body, the fastening bracket may be connected to the hinge shaft through the hinge insertion ring.

The hinge unit further includes a locking projection protruding outward from the hinge shaft, and a locking portion formed on the hinge insertion ring to be hooked on the locking projection when the display unit is unfolded from the system body to limit an unfolding angle of the display unit. I can.

The system main body includes a pair of protruding areas respectively protruding from both ends of the edge area in the hinge axis direction as a main protruding area, and the display unit protrudes from the edge area in the hinge axis direction, and the pair of main units protrude when combined with the system main body. A display protruding region positioned between regions, the hinge units are provided in a pair to connect both sides of the display region and each of the main protruding regions, and the hinge axis is one of the main protruding regions and the display protruding regions And the other protruding region of the main body.

The display protruding area may protrude toward the front of the screen of the display unit from an edge area in the hinge axis direction of the display unit so that a side surface of the display unit may have an L shape.

A first shaft through hole communicating with the inside is formed on each of the plate surfaces facing each other of the pair of protruding regions of the main body, and a second through hole corresponding to each of the first shaft through holes is formed on both plate surfaces of the display protruding region in the direction of the main protruding region. The shaft through hole is formed so that the hinge shaft extends into the system body through the second shaft through hole and the second shaft through hole, and can be inserted into the hinge insertion ring.

The portable electronic device according to the present invention has one or more of the following effects.

First, in the present invention, in forming a hinge structure in which the display unit and the system main body are hinged, the hinge axis between the system main body and the display unit formed by the hinge unit is located inside the system main body, that is, at the bottom of the bottom of the upper case. , An effect of reducing the length of the portable electronic device in the vertical direction (y-axis direction of FIG. 2) is provided.

Second, by configuring the fastening bracket of the hinge unit located on the display side to have an L-shape, it is possible to reduce the length of the portable electronic device in the vertical direction while the display unit completely covers the system body.

Third, it is possible to simplify the cable structure by implementing the hinge shaft in a hollow cylindrical shape and extending a signal cable connecting the display unit and the system body through the empty space inside the hinge shaft.

Fourth, the angle at which the display unit is unfolded with respect to the system body is limited to a preset angle due to the locking between the locking jaw and the locking portion, and the system body becomes An effect of preventing being lifted from the floor surface is provided.

1 is a schematic diagram showing a hinge structure of a typical laptop computer.

2 is a perspective view of a portable electronic device according to an embodiment of the present invention.

3 is an exploded perspective view of a portable electronic device according to an embodiment of the present invention.

4 is an exploded perspective view of a hinge unit of a portable electronic device according to an embodiment of the present invention

5 is a view showing the installation state of the hinge unit according to the sealing example of the present invention.

FIG. 6 is a view showing a part of a cross section taken along line VI-VI of FIG. 3.

7 is a side view of a portable electronic device according to an embodiment of the present invention.

8 is an exploded perspective view of a hinge unit of a portable electronic device according to another embodiment of the present invention.

A portable electronic device according to an exemplary embodiment of the present invention includes a display unit, a system body comprising an upper case and a lower case, and a hinge shaft formed under a lower surface of the upper case, and the display unit rotates with respect to the system body. Includes a unit; The hinge unit may include a hinge shaft, and a fastening bracket having one side connected to the hinge shaft and the other side fastened to an inner plate surface of the display unit.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a portable electronic device 100 according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the portable electronic device 100 according to an embodiment of the present invention. 2 and 3, the portable electronic device 100 according to an embodiment of the present invention includes a display unit 110 such that the display unit 110 covers or unfolds the system body 130 according to a hinge structure. Is rotatably coupled to the system body 130. In the embodiments shown in FIGS. 1 and 2, the portable electronic device 100 according to the present invention has the form of a laptop computer, but the display unit 110 covers or unfolds the system body 130. If has, the technical idea of the present invention is not limited to the name.

2 and 3, the portable electronic device 100 according to an embodiment of the present invention includes a display unit 110, a system body 130, and a hinge unit 150.

The display unit 110 displays an image on the screen. As shown in FIGS. 2 and 3, the display unit 110 accommodates the display panel 111 in the display case 112 so that the display panel 111 displaying a screen is exposed on the front side. Here, the display panel 111 may be provided in various forms, such as a liquid crystal display panel, an organic light emitting display panel, or an electrophoretic display panel. It may include a touch panel for a touch input.

The system main body 130 displays an image through the display unit 110. The system main body 130 may include various hardware configurations and software configurations for processing information or displaying an image through the display unit 110. For example, the system main body 130 is a hardware configuration such as a main board, a CPU, a graphics card or a graphics chipset, a memory, a storage medium, an operating system, various application programs operating based on the operating system, and a hardware configuration. Various drivers may be included to support the operation of the system, but the technical idea of the present invention is not limited to the components constituting the system main body 130, of course. 2 and 3 illustrate that the portable information processing device according to the present invention is provided in the form of a laptop computer, the system main body 130 may include a touch pad 132 and a keyboard 133 as input devices. .

Here, the system main body 130 is composed of an upper case 130a (see FIG. 6) and a lower case 130b (see FIG. 6), so that the upper case 130a and the lower case 130b form an accommodation space therein. Combined, the above-described hardware configuration is installed in the interior accommodation space.

The hinge unit 150 connects the display unit 110 and the system main body 130 so that the display unit 110 covers the system main body 130 or unfolds from the system main body 130. In the present invention, as shown in FIG. 3, the hinge units 150 are provided as a pair, and the display unit 110 rotates with respect to the system body 130 at both sides of the hinge axis (ha) direction. ) And the system body 130 are rotatably connected, and a description thereof will be described later.

4 is an exploded perspective view of a hinge unit 150 according to an embodiment of the present invention, FIG. 5 is a view showing an installation state of the hinge unit 150 according to the embodiment of the present invention, and FIG. 6 is a VI of FIG. It is a diagram showing a part of the cross section along the line -VI.

4 to 6, the hinge unit 150 according to the embodiment of the present invention forms a hinge shaft ha inside the system body 130, as shown in FIG. 6, the system body A hinge shaft (ha) is formed under the bottom of the upper case (130a) of the 130 to connect the display unit (110) and the system body (130) so that the display unit (110) rotates to the system body (130). .

The hinge unit 150 according to an embodiment of the present invention includes a hinge shaft 171 and

fastening brackets

172 and 173.

The hinge shaft 171 is connected to the display unit 110 and the system body 130 so that the longitudinal direction thereof forms a hinge axis ha. One side of the

fastening brackets

172 and 173 is connected to the hinge shaft 171 and the other side is fastened to the inner plate surface of the display unit 110 as shown in FIG. 5.

In the present invention, as shown in FIG. 4, the first hinge unit 160 is fastened to the system body 130 and the second hinge unit 170 is fastened to the display unit 110 as shown in FIG. 4. It will be described as an example that consists of. Here, the hinge shaft 171 and the

fastening brackets

172 and 173 constitute the second hinge unit 70.

In the embodiment of the present invention, it is assumed that the

fastening brackets

172 and 173 include an extension part 172 and a fastening part 172. The extension 172 extends from the hinge shaft 171 toward the plate surface of the display unit 110. In addition, the fastening part 173 is bent from the extension part 172 and fastened to the inner plate surface of the display part 110 as shown in FIG. 6.

More specifically, one side of the extension part 172 is connected to the hinge shaft 171 and the other side extends toward the plate surface of the display unit 110. That is, as shown in (a) of FIG. 6, even in a state where the display unit 110 is unfolded from the system main body 130, the other side of the extension unit 172 extends in a direction toward the plate surface of the display unit 110 As shown in (b) of FIG. 6, even in a state where the display unit 110 covers the system body 130, the other side of the extension unit 172 extends in a direction toward the plate surface of the display unit 110. Here, the direction toward the plate surface of the display unit 110 may be defined as a normal direction of the plate surface of the display unit 110, and in this case, the normal direction should not be interpreted only when it is orthogonal to the plate surface of the display unit 110. .

As described above, the fastening part 173 is bent from the other side of the extension part 172 and fastened to the inner plate surface of the display part 110. That is, it is assumed that the extension portion 172 and the fastening portion 173 have an L-shaped cross section, as shown in FIG. 6.

In an embodiment of the present invention, a plurality of fastening holes 173a, for example, four fastening holes 173a, are formed in the fastening part 173, as shown in FIG. 4, and as shown in FIG. Likewise, it is assumed that it is fastened to the inner plate surface of the display unit 110 through the fastening bolt 177.

In the present invention, it is assumed that the hinge shaft 171, the extension part 172, and the fastening part 173 constituting the second hinge unit 170 are integrally formed.

According to the above configuration, the

fastening brackets

172 and 173 have an L-shaped cross-section as shown in FIG. 6, and in a state in which the hinge shaft ha is formed inside the system main body 130, When the display unit 110 covers the system main body 130 by the L-shaped

fastening brackets

172 and 173, the display unit 110 and the system main body 130 are, as shown in FIG. 6(b). If you face it face to face, it becomes possible. To this end, the length of the extension part 172 is provided such that when the display part 110 covers the system body 130, the display part 110 and the system body 130 face each other to face each other.

In the present invention, for example, the hinge shaft 171 is provided in a circular column shape to be rotatably inserted into a hinge insertion ring 161 to be described later. In the present invention, the hinge shaft 171 has a hollow cylindrical shape. Take as an example what to have.

Here, the signal cable 180 for electrically connecting the display unit 110 and the system main body 130 is, as shown in FIG. 5, the internal space 171a of the hinge shaft 171 from the system main body 130 ) Can be extended to the display unit 110 through. The signal cable 180 may include an image line for transmitting an image signal and a touch line for transmitting a touch signal from the touch panel of the display unit 110 to the system body 130.

Referring again to FIGS. 4 and 5, the hinge unit 150 may include at least one hinge insertion ring 161 and a fastening plate 162. The hinge insertion ring 161 and the fastening plate 162 constitute the first hinge unit 160 that is fastened to the system body 130 side.

The hinge insertion ring 161 is hinged with the hinge shaft 171 by inserting the hinge shaft 171. That is, by rotating the hinge shaft 171 inserted into the hinge insertion ring 161 inside the hinge insertion ring 161, the hinge insertion ring 161 and the hinge shaft 171 are connected to the display unit 110 and the system body. It forms a hinge axis (ha) for the hinge coupling between (130).

The fastening plate 162 extends from the hinge insertion ring 161 and is fastened to the inside of the system body 130, thereby fixing the hinge unit 160 to the system body 130 side. A plurality of bolt through holes 162a for fastening into the system body 130 are formed in the fastening plate 162 and fastened to the system body 130 through fastening bolts (not shown). Here, in the embodiment of the present invention, it is assumed that the hinge insertion ring 161 and the fastening plate 162 are integrally formed.

Meanwhile, a coupling groove 175 may be formed along the outer diameter at the end of the hinge shaft 171 in the direction of the hinge insertion ring 161, and after the hinge shaft 171 is inserted into the hinge insertion ring 161, the coupling groove ( By fitting the coupling ring 176 to the 175, it is possible to prevent the hinge shaft 171 from being removed from the hinge insertion ring 161.

According to the above configuration, the hinge shaft ha formed by the hinge insertion ring 161 (with the hinge shaft 171) is inside the system body 130, more specifically, of the bottom surface of the upper case 130a. By being formed in the lower part, as shown in FIG. 1, when the conventional hinge module is compared with the hinge structure located outside the system body 130, it is fastened with the hinge insertion ring 161 through the internal design of the system body 130. Since the plate 162 can be disposed inside the system body 130, the length in the vertical direction (y-axis direction) can be reduced.

In addition, as shown in (b) of FIG. 6, when the display unit 110 covers the system main body 130, the display unit 110 and the system main body 130 are extended to a length that is possible when the display unit 110 and the system main body 130 face each other. By configuring 172 to extend from the hinge shaft 171, even if the hinge shaft ha is disposed inside the system body 130, the display unit 110 can completely cover the system body 130.

More specifically, in the conventional hinge structure shown in FIG. 1, since the hinge module 13 comes out of the system body 12, the diameter of the outer case surrounding the hinge module 13 is outside the hinge module. It is affected by the configuration formed in (a configuration corresponding to the hinge insertion ring 161 of the present invention).

On the other hand, the hinge unit 150 according to the present invention has a structure in which the hinge insertion ring 161 forming the outermost angle of the hinge axis ha of the hinge unit 150 is disposed inside the system body 130, The hinge unit 150 does not affect the size of the system body 130. Therefore, when compared with the conventional hinge structure shown in FIG. 1, the size of the portable electronic device 100 in the vertical direction (y-axis direction) is reduced by the size of the conventional hinge structure protruding outside the system main body 12. The effect that can be provided is provided.

Again, referring to FIG. 3, the system body 130 according to the embodiment of the present invention may include a pair of body protruding regions 134. The main body protruding regions 134 protrude from both ends of the edge region in the direction in which the hinge axis ha is formed, that is, the hinge axis ha direction of the system main body 130, and protrude along the plate surface of the system main body 130. .

In addition, the display unit 110 may include a display protrusion area 113 protruding from an edge area of the display unit 110 in the direction of the hinge axis ha. When the display unit 110 and the system main body 130 are coupled by the hinge unit 150, the display protruding area 113 is positioned between the pair of main protruding areas 134 as shown in FIG. 2. It is done.

According to the above configuration, a pair of hinge units 150 connect both sides of the display protruding area 113 and each of the main protruding areas 134 to couple the display unit 110 and the system main body 130. In this case, the hinge axis ha is formed along one main body protruding region 134, the display protruding region 113, and the other main body protruding region 134.

Here, the display protrusion area 113 protrudes from the edge area in the hinge axis (ha) direction of the display unit 110 toward the front of the screen of the display unit 110. Accordingly, as shown in FIG. 6, the display The side surface of the part 110 is provided to confine an L-shape, which corresponds to the side shape of the second hinge unit 170 on the side of the display unit 110.

In the present invention, as shown in FIG. 6, the case forming the main body protruding region 134 is integrally formed with the main body case 131, and the case forming the display protruding region 113 is A part 113b of the rear case and a separate cover case 113c are combined as an example, but the technical idea of the present invention is not limited thereto.

Again, referring to the enlarged area of FIG. 3, a first shaft through hole 134a communicating with the inside of the system main body 130 may be formed on each of the plate surfaces of the pair of protruding areas 134 of the main body facing each other. have. 3 shows only the first shaft through hole 134a formed in the main body protruding region 134 on one side, but the first shaft through hole 134a is formed in a shape corresponding to the body protruding region 134 on the other side. .

In addition, the second shaft passes through the plate surfaces on both sides of the display protruding region 113 in the direction of the main protruding region 134, that is, at the positions corresponding to the first shaft through holes 134a, respectively. A ball 113a may be formed. In FIG. 3, only one side of the plate surfaces on both sides of the display protruding region 113 is shown, but the second shaft through hole 113a is formed in a shape corresponding to the opposite side as well.

According to the above configuration, the hinge shaft 171 has a second shaft through hole 113a of the display protruding region 113 and a second shaft through hole 113a of the main body protruding region 134 from the inside of the display unit 110. It is extended into the system body 130 through the system body 130 and can be inserted into the hinge insertion ring 161 from the inside of the system body 130.

Meanwhile, the hinge unit 150 according to an embodiment of the present invention may further include a locking projection 174 protruding radially outward from the hinge shaft 171, as shown in FIG. 4. In addition, the hinge unit 150 is a locking portion that is caught on the locking projection 174 when the display unit 110 is unfolded from the system body 130 and the hinge shaft 171 rotates inside the hinge insertion ring 161 ( 164).

Accordingly, as shown in FIG. 7, the angle at which the display unit 110 is spread with respect to the system main body 130 is limited to a preset angle due to the engagement between the locking projection 174 and the locking unit 164, Through this, it is possible to prevent the system body 130 from being lifted from the bottom surface and being damaged as the display protruding region 113 having an L-shaped side surface is unfolded out of the corresponding angle.

8 is an exploded perspective view of a hinge unit of a portable electronic device according to another embodiment of the present invention. In the embodiment shown in Figure 8, the hinge shaft 171b is formed integrally with the fastening plate 162 on the side of the system main body 130, and the hinge inserting ring 161b on the extension part 172 of the

fastening brackets

172 and 173 As an example, the hinge shaft 171b is connected to the hinge shaft 171b and is inserted into the hinge insertion ring 161b inside the display unit 110.

That is, one side of the hinge insertion ring 161b is hinged with the hinge shaft 171b in the display unit 110 to form a hinge shaft ha, and the

fastening brackets

172 and 172 are hinged insertion rings 161b. ) Is connected to the hinge shaft 171b, thereby providing the same effect as in the embodiment shown in FIG. 4.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, but may be manufactured in various different forms, and those having ordinary knowledge in the technical field to which the present invention pertains. It will be understood that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects.

[Explanation of code]

100: portable electronic device 110: display unit

111: display panel 112: display case

113: display protruding area 113a: second shaft through hole

113b: part of the back case 113c: cover case

130: system body 131: body case

132: touch pad 133: keyboard

134: main body protruding area 134a: first shaft through hole

150: hinge unit 160: first hinge unit

161: hinge insertion ring 162: fastening plate

162a: bolt through hole 164: locking part

170: second hinge unit 171: hinge shaft

171a: inner space 172: extension

173: fastening part 173a: fastening hole

174: locking jaw 175: coupling groove

176: coupling ring 177: fastening bolt

180: signal cable

The present invention can be applied to a portable electronic device in which a display unit and a system body are hingedly coupled in a portable electronic device such as a laptop.

Claims

Display,

A system body consisting of an upper case and a lower case, and

And a hinge unit forming a hinge shaft under the bottom of the upper case, and allowing the display unit to rotate with respect to the system body;

The hinge unit

Hinged shaft, and

A portable electronic device comprising: a fastening bracket having one side connected to the hinge shaft and the other side fastened to an inner plate surface of the display unit.
The method according to claim 1,

The fastening bracket includes an extension part extending from the hinge shaft toward the plate surface of the display part, and a fastening part bent from the extension part and fastened to the inner plate surface of the display part, and has an L-shape. Device.
The method according to claim 1,

And the extension part extends from the hinge shaft to a length such that the display part and the system body face each other when the display part covers the system body.
The method according to claim 1,

The portable electronic device, wherein the fastening bracket is formed integrally with the hinge shaft.
The method according to claim 1,

The hinge shaft has a hollow cylindrical shape;

And a signal cable extending from the system main body to the display unit through the inside of the hinge shaft to electrically connect the display unit and the system main body.
The method according to claim 1,

The hinge unit

At least one hinge insertion ring into which the hinge shaft is inserted to form the hinge shaft by being hinged with the hinge shaft inside the system body; And

A portable electronic device comprising a fastening plate having one side connected to the hinge insertion ring and the other side fastened to the inside of the system body.
The method according to claim 1,

The hinge unit

At least one hinge insertion ring into which the hinge shaft is inserted so that one side of the display unit is hinge-coupled to the hinge shaft to form the hinge shaft, and

A fastening plate having one side connected to the hinja shaft inside the system body and the other side fastening inside the system body;

The fastening bracket is connected to the hinge shaft through the hinge insertion ring.
The method according to claim 6 or 7,

The hinge unit

A locking jaw protruding outward from the hinge shaft,

And a locking portion formed on the hinge insertion ring to be hooked on the locking jaw when the display portion is unfolded from the system body to limit an unfolding angle of the display portion.
The method according to claim 1,

The system main body includes a pair of protruding portions respectively protruding from both ends of the edge region in the hinge axis direction as main protruding regions;

The display unit includes a display protruding region protruding from an edge region in the hinge axis direction and positioned between a pair of protruding regions of the main body when combined with the system main body;

The hinge units are provided in a pair to connect both sides of the display area and each of the protruding areas of the main body;

And the hinge axis is formed along one protruding area of the main body, the protruding area of the display, and the protruding area of the other main body.
The method of claim 9,

And the display protruding area protrudes from a lower edge area of the display unit toward the front of the screen of the display unit so that a side surface of the display unit has an L shape.
The method of claim 9,

A first shaft through hole communicating with the inside is formed in each of the plate surfaces facing each other of the pair of protruding regions of the main body;

Second shaft through holes are formed at positions corresponding to each of the first shaft through holes on both plate surfaces of the display protruding region in the direction of the main body protruding region;

The hinge shaft connects the display unit and the system body through the second shaft through hole and the first shaft through hole.