JP2021174252A - Portable display device - Google Patents

Abstract

To provide a portable display device allowing feeling of carrying to be improved.SOLUTION: A portable display device comprises: a foam plastic support plate, 5 kg/m3 or more to 200 kg/m3 or less in mass density, and 1.0 mm or more to 7.0 mm or less in thickness; an organic light emitting diode panel with a touch sensor arranged on an upper part of one of main surfaces of the support plate; a glass plate arranged on an upper part of one of main surfaces of the organic light emitting diode panel, 0.1 mm or more to 0.3 mm or less in thickness; and a mounting substrate on which a control circuit connected to the organic light emitting diode panel is mounted, wherein the support plate is a planar shape in a square of which each length is 60 mm or more to 450 mm or less, and the mounting substrate is embedded in the support plate.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a portable display device.

In a portable display device such as a tablet terminal, parts such as a display panel are housed in a housing.

Japanese Patent Application Laid-Open No. 2015-501461 Japanese Unexamined Patent Publication No. 2003-15795 Japanese Unexamined Patent Publication No. 2003-76442 U.S. Pat. No. 8502788

Conventional portable display devices can be difficult to hold or handle.

An object of the present disclosure is to provide a portable display device capable of improving the comfort.

The portable display device of the present disclosure has a mass density of 5 kg / m ³ or more and 200 kg / m ³ or less, and a foamable plastic support plate having a thickness of 1.0 mm or more and 7.0 mm or less, and one of the support plates. An organic light emitting diode panel with a touch sensor provided above the main surface and a glass plate provided above one main surface of the organic light emitting diode panel and having a thickness of 0.1 mm or more and 0.3 mm or less. The support plate has a mounting substrate on which a control circuit connected to the organic light emitting diode panel is mounted, and the support plate has a rectangular planar shape having a length of 60 mm or more and 450 mm or less on each side. The substrate is embedded in the support plate.

According to the present disclosure, the comfort can be improved.

It is a top view which shows the portable display device which concerns on 1st Embodiment. It is a top view which shows the support plate, the coil for charging, and the mounting board included in the portable display device which concerns on 1st Embodiment. It is sectional drawing which shows the portable display device which concerns on 1st Embodiment. It is a figure which shows the structure of the mounting board. It is a figure which shows the use example of the portable display device which concerns on 1st Embodiment. It is a top view which shows the portable display device which concerns on 2nd Embodiment. It is sectional drawing which shows the portable display device which concerns on 2nd Embodiment.

Newsprint is very easy to use as a medium for displaying information. The inventors of the present application have diligently studied to reproduce the usability of newspaper on a portable display device. At this time, the inventors of the present application considered that the usability of the newspaper lies in the following four points.

(1) The part that touches the finger is deformed following the finger.

(2) While being light and flexible, it has a certain level of independence and can grip the sides and corners with one hand.

(3) The degree of freedom of deformation is high, and the visible area can be deformed relatively freely with a finger to make it easier to see.

(4) It follows the shape of the surface forming the internal space such as a bag, and is unlikely to cause a bulky feeling.

Then, the inventors of the present application came up with the following form as a portable display device that can obtain these four points of usability, and named such a portable display device "Comfy Device".

Hereinafter, embodiments of the present disclosure will be specifically described with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration may be designated by the same reference numerals to omit duplicate explanations. An XYZ Cartesian coordinate system is set in each figure for convenience of explanation. In the present disclosure, the planar shape means a shape when viewed from the Z-axis direction.

(First Embodiment)
The first embodiment will be described. FIG. 1 is a plan view showing a portable display device according to the first embodiment. FIG. 2 is a plan view showing a support plate, a charging coil, and a mounting substrate included in the portable display device according to the first embodiment. FIG. 3 is a cross-sectional view showing a portable display device according to the first embodiment. FIG. 3A is a cross-sectional view taken along the line IIIa-IIIa in FIGS. 1 and 2, and FIG. 3B is a cross-sectional view taken along the line IIIb-IIIb in FIGS. 1 and 2. be.

As shown in FIGS. 1 to 3, the portable display device 1 according to the first embodiment includes a foamable plastic support plate 10, a flexible battery 20, and an organic light emitting diode (organic) with a touch sensor. It has a light emitting diode (OLED) panel 30, a polarizing plate 40, and a glass plate 50. That is, the OLED panel 30 is provided above one main surface of the support plate 10, and the glass plate 50 is provided above one main surface of the OLED panel 30.

The support plate 10 has a rectangular planar shape having a length of 60 mm or more and 450 mm or less on each side. For example, in the planar shape of the support plate 10, the length of one set of sides parallel to each other is about 420 mm, and the length of the other set of sides is about 297 mm. For example, in the planar shape of the support plate 10, the length of one set of sides parallel to each other may be about 297 mm, and the length of the other set of sides may be about 210 mm. The mass density of the support plate 10 is 5 kg / m ³ or more and 200 kg / m ³ or less, and the thickness of the support plate 10 is 1.0 mm or more and 7.0 mm or less. The material of the support plate 10 is not particularly limited. The support plate 10 is made of foamed plastic such as polystyrene, polyethylene, polyprepylene, polyurethane or polyolefin. The support plate 10 may be composed of any combination thereof. The 25% compressive force of the support plate 10 is preferably 10 N or more and 300 N or less from the viewpoint of usability. The 25% compressive force of the support plate 10 is the D method of the hardness test of JIS K6400-2: 2012 (soft foam material-physical characteristics-Part 2: hardness and compressive stress-method of determining strain characteristics). It is a force measured with respect to a test piece collected from the support plate 10 by the test. In carrying out this method D, the general conditions of the test and other conditions in JIS K6400-2: 2012 are followed. The size of the test piece is a square of 380 mm, and a piece having a thickness of 50 mm is collected from the support plate 10. The measuring method is to quickly pressurize to (25 ± 1)% of the thickness of the test piece at a speed of 100 ± 20 mm / min after precompression, read the force after holding for 20 ± 1 seconds as hardness, and support this. The compressive force is 25% of the plate 10.

For example, the thickness of the battery 20 is 0.1 mm or more and 7.0 mm or less. The battery 20 is, for example, a resin battery. The battery 20 may be embedded in the support plate 10.

The OLED panel 30 includes, for example, touch sensors arranged in a matrix. OLED is sometimes called organic electroluminescence (EL). For example, the sum of the thickness of the OLED panel 30 and the thickness of the polarizing plate 40 is 0.05 mm or more and 0.5 mm or less.

The thickness of the glass plate 50 is 0.1 mm or more and 0.3 mm or less, and the glass plate 50 has flexibility.

The portable display device 1 has a mounting board 60 on which a control circuit connected to the OLED panel 30 is mounted. The mounting board 60 is, for example, a printed wiring board, preferably a flexible printed circuit board. The mounting board 60 is embedded in the support plate 10. FIG. 4 is a diagram showing the configuration of the mounting board 60.

As shown in FIG. 4, the mounting board 60 includes a control circuit 61, a read only memory (ROM) 62, a random access memory RAM 63, a communication circuit 64, and a power supply circuit. 65 and are implemented. The control circuit 61, ROM 62, RAM 63, communication circuit 64, and power supply circuit 65 are connected to each other via a bus 69. The OLED 30 is also connected to the bus 69.

For example, a control program for controlling the OLED 30 is stored in the ROM 62. The RAM 63 reads the control program from the ROM 62 and stores it when there is an instruction to start the control program. The control circuit 61 controls the OLED 30 according to a control program stored in the RAM 63. An output signal from the touch sensor provided in the OLED 30 is also input to the control circuit 61. The communication circuit 64 is used as an interface for wireless or wired communication between the portable display device 1 and an external device. The power supply circuit 65 is connected to the battery 20 and converts the power supplied from the battery 20 into power that can be used by the control circuit 61, ROM 62, RAM 63, communication circuit 64, and OLED 30.

The portable display device 1 has a coil 66 for wireless charging. The coil 66 is embedded in the support plate 10. The coil 66 is connected to the battery 20, and the battery 20 stores the electric power generated by the coil 66. Then, the battery 20 appropriately supplies electric power to the power supply circuit 65. The coil 66 is an example of a power feeding device.

The support plate 10 is formed with an opening 11 that penetrates the support plate 10 in the thickness direction, and the mounting substrate 60 is embedded in the opening 11. A recess 12 is formed on the main surface of the support plate 10 opposite to the side on which the OLED 30 and the glass plate 50 are provided, and the coil 66 is embedded in the recess 12. It should be noted that there is no functional problem even if the opening 11 does not penetrate and is embedded in the support plate 10.

The portable display device 1 further includes a support plate 10, a battery 20, an OLED 30, a polarizing plate 40, and a resin material 70 that covers the outer edges of the glass plate 50. The resin material 70 is made of a resin such as a silicone resin. The resin material 70 has, for example, a hollow tube shape, but may be solid. The resin material 70 contacts the support plate 10, the battery 20, the OLED 30, the polarizing plate 40, and the side surfaces of the glass plate 50, and also contacts the back surface of the support plate 10 and the front surface of the glass plate 50. The resin material 70 is an example of a frame.

According to the portable display device 1 according to the first embodiment, since the support plate 10 made of foamable plastic is used and the glass plate 50 or the like is thin, it is possible to achieve both appropriate rigidity and flexibility. For example, in the portable display device 1, the portion touching the finger can be deformed following the finger. Further, the portable display device 1 is lightweight and has flexibility. Further, since the glass plate 50 is difficult to expand and contract in the in-plane direction, the portable display device 1 has a certain level of independence, and the side portion and the corner portion can be gripped with one hand. Further, the portable display device 1 has a high degree of freedom of deformation, and the viewing area can be deformed relatively freely with a finger to make it easier to see. Further, the portable display device 1 follows the shape of a surface forming an internal space such as a bag, and is unlikely to cause a bulky feeling.

FIG. 5 is a diagram showing a usage example of the portable display device 1. As shown in FIG. 5, even if the mobile display device 1 has a size that can be grasped by both hands, the mobile display device 1 is curved without imposing a burden on the hands so that the displayed image can be easily viewed. Easy to adjust.

(Second Embodiment)
The second embodiment will be described. FIG. 6 is a plan view showing a portable display device according to the second embodiment. FIG. 7 is a cross-sectional view showing a portable display device according to the second embodiment. FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG.

As shown in FIGS. 6 to 7, the portable display device 2 according to the second embodiment includes a support plate 10, a battery 20, an OLED panel 30 with a touch sensor, and a polarizing plate, as in the first embodiment. It has 40, a glass plate 50, and a mounting substrate 60. Although not shown, the portable display device 2 also includes a coil 66.

The portable display device 2 has a frame 80 instead of the resin material 70. The frame 80 includes a resin material 81, a first elastic adjusting member 82, and a second elastic adjusting member 83. The resin material 81 is made of a resin such as a silicone resin. The resin material 81 has, for example, a hollow tube shape, but may be solid. The resin material 81 contacts the support plate 10, the battery 20, the OLED 30, the polarizing plate 40, and the side surfaces of the glass plate 50, and also contacts the back surface of the support plate 10 and the front surface of the glass plate 50. For example, the first elastic adjusting member 82 and the second elastic adjusting member 83 are linear members. The first elastic adjusting member 82 is annularly fixed to the back surface (main surface on the −Z side) of the support plate 10 along the edge of the support plate 10 in a plan view. The second elastic adjusting member 83 is annularly fixed to the surface of the glass plate 50 (main surface on the + Z side) along the edge of the glass plate 50 in a plan view. Both the first elastic adjusting member 82 and the second elastic adjusting member 83 are covered with the resin material 81. The elastic modulus of the second elastic adjusting member 83 in the longitudinal direction is larger than the elastic modulus of the first elastic adjusting member 82 in the longitudinal direction. That is, the second elastic adjusting member 83 is less likely to stretch than the first elastic adjusting member 82.

Other configurations are the same as in the first embodiment.

The portable display device 2 according to the second embodiment also has the same effect as the portable display device 1 according to the first embodiment. Further, since the frame 80 including the first elastic adjusting member 82 and the second elastic adjusting member 83 is provided, the portable display device 2 is curved so that the display surface, that is, the surface on the glass plate 50 side is concave. It is easy and difficult to bend so that it becomes convex. Therefore, the user can easily grasp the portable display device 2 with both hands while maintaining the wrist at a relatively natural angle. Further, the portable display device 2 tends to return to a flat shape after use.

In both the first embodiment and the second embodiment, a flexible cover may be provided to cover the back surface (the surface on the −Z side) of the support plate 10. The support plate 10 can be protected from the outside by the cover. Further, when the mounting board 60 or the like is exposed on the back surface of the support plate 10, the mounting board 60 or the like can also be protected from the outside. Examples of the cover include a glass plate and a resin film.

The battery 20 is not provided, and power may be supplied to the power supply circuit 65 from the outside. In this case, the total mass of the portable display devices 1 and 2 can be further reduced.

The total mass of the portable display device of the present disclosure is not limited, but is preferably 200 g or less, and more preferably 150 g or less.

The positions of the mounting board and the power feeding device are not limited, but when the portable display device is divided into three along either the longitudinal direction (Y-axis direction) or the lateral direction (X-axis direction) in a plan view, the portable display device is used. It is preferable that the entire center of gravity is in the central region of the three regions obtained by dividing into three. In this case, when the portable display device is further divided into three along the other side in the longitudinal direction or the lateral direction, the center of gravity of the entire portable display device is further divided into three regions, which is the central region. It may be in the lateral area. If the center of gravity is in the central area, the bias of the center of gravity will be maintained regardless of whether the long side of the portable display device is parallel to the horizontal direction or the short side is parallel to the horizontal direction. Can be suppressed. Further, if the center of gravity is in the lateral region, the center of gravity is low in the basic posture and the burden on the hand can be further reduced by setting the posture in which the region is vertically below as the basic posture of the portable display device. Even when the battery is embedded in the support plate, the position of the battery is not limited, and it is preferable that the center of gravity of the entire portable display device is in the above position.

In plan view, the mounting board may be arranged in either of the two regions obtained by dividing the portable display device into two in the longitudinal direction. Further, the mounting substrate may be arranged within 50 mm from any end side of the support in a plan view.

Although the preferred embodiments and the like have been described in detail above, the embodiments are not limited to the above-described embodiments and the like, and various embodiments and the like described above are used without departing from the scope of the claims. Modifications and substitutions can be added.

1, 2: Portable display device 10: Support plate 20: Battery 30: OLED panel 40: Polarizing plate 50: Glass plate 60: Mounting board 61: Control circuit 64: Communication circuit 65: Power supply circuit 66: Coil 70: Resin material 80 : Frame 81: Resin material 82: First elastic adjusting member 83: Second elastic adjusting member

Claims (10)

A support plate made of foamable plastic having a mass density of 5 kg / m ³ or more and 200 kg / m ³ or less and a thickness of 1.0 mm or more and 7.0 mm or less.
An organic light emitting diode panel with a touch sensor provided above one of the main surfaces of the support plate, and
A glass plate provided above one main surface of the organic light emitting diode panel and having a thickness of 0.1 mm or more and 0.3 mm or less.
A mounting board on which a control circuit connected to the organic light emitting diode panel is mounted, and
Have,
The support plate has a rectangular planar shape having a length of 60 mm or more and 450 mm or less on each side.
The mounting board is a portable display device embedded in the support plate. The portable display device according to claim 1, wherein the support plate is made of polystyrene, polyethylene, polyprepylene, polyurethane or polyolefin, or any combination thereof. The portable display device according to claim 1 or 2, wherein the 25% compressive force of the support plate is 10 N or more and 300 N or less. It has a polarizing plate provided between the organic light emitting diode panel and the glass plate.
The portable display device according to any one of claims 1 to 3, wherein the sum of the thickness of the organic light emitting diode panel and the thickness of the polarizing plate is 0.05 mm or more and 0.5 mm or less. The portable display device according to any one of claims 1 to 4, which is provided between the support plate and the organic light emitting diode panel and has a flexible battery. The portable display device according to any one of claims 1 to 4, further comprising a flexible battery embedded in the support plate. The portable display device according to claim 5 or 6, wherein the thickness of the battery is 0.1 mm or more and 7.0 mm or less. The portable display device according to any one of claims 1 to 7, further comprising a power feeding device embedded in the support plate and connected to the mounting board. The portable display device according to any one of claims 1 to 8, further comprising the support plate, the organic light emitting diode panel, and a frame covering the outer edge of the glass plate. The portable display device according to any one of claims 1 to 9, wherein the total mass is 200 g or less.

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