TW201326987A - Dual display structure - Google Patents

Abstract

A dual display structure including a light source, a light guide plate, a first display module and a second display module is provided. The light guide plate includes an incident plane, a first light exiting plane and a second light exiting plane. The first and second display modules are disposed at the first and second exiting planes parallel and contrariwise. Light from the light source enters to the incident plane of the light guide plate and emits to the first display module and the second display module through the first exiting plane and the second exiting plane.

Description

Double screen structure

This invention relates to a screen structure, and more particularly to a dual screen structure.

In today's information society, portable electronic devices, such as tablets and notebook computers, have become an indispensable necessity for most people. The tablet has the advantages of light weight and small size, which is quite convenient for the user to carry around. Moreover, the user only needs to take the tablet with one hand, and the use is less limited. The notebook computer has better computing power than the tablet computer, and has a physical keyboard for the user to input data.

With the continuous evolution of electronic technology, these portable electronic devices are constantly being introduced. Some portable electronic devices have dual-sided screens to provide more functions. Taking a notebook computer as an example, if two screen modules are directly combined into a dual screen, multiple users can simultaneously view the screen on the dual screen at different positions, and even operate. However, due to the direct combination of the two screen modules, the overall thickness is large, which is not only unsightly. When the screen is rotated relative to the main machine, it may be too heavy to maintain the desired position, which causes inconvenience to the user.

The invention provides a dual screen structure, comprising a light source, a light guide plate, a first screen module and a second screen module. The light guide plate includes a light entering a surface, a first light emitting surface and a second light emitting surface. The first screen module is disposed on one side of the first light emitting surface.

The second screen module is disposed on one side of the second light emitting surface, and the first screen module is disposed in parallel with the second screen module and facing away from the ground. The light emitted by the light source enters the light guide plate from the light entrance surface, and then passes through the first light exit surface and the second light exit surface to the first screen module and the second screen module respectively.

The invention further provides a dual screen structure, comprising a reflective sheet, a first backlight module, a first screen module, a second backlight module and a second screen module. The reflective sheet includes a first side and a second side. The first backlight module is disposed on the first surface of the reflective sheet, and the first backlight module includes a first light source and a first light guide plate.

The first screen module is disposed on one side of the first backlight module. The second backlight module is disposed on the second surface of the reflective sheet, and the second backlight module includes a second light source and a second light guide plate. The second screen module is disposed on one side of the second backlight module, and the first screen module is disposed in parallel with the second screen module and facing away from the ground.

Based on the above, the dual screen structure of the present invention reduces the thickness of the dual screen structure by allowing the first screen module and the second screen module to share the light guide plate or the reflection sheet.

Taking a common light guide plate as an example, the shape of the light guide plate may be trapezoidal. After entering the light guide plate, the light may enter the first screen module and the second screen module from the two sides of the trapezoid, and simultaneously the first screen module and the first The second screen module provides a surface light source.

For example, the common reflective sheet is disposed between the first backlight module and the second backlight module, so that the first screen module and the second screen module are not incident. The light of the group is reflected back to the first light guide plate and the second light guide plate by the opposite sides of the reflective sheet, and is guided to the first screen module and the second screen module.

In addition, the dual screen structure of the present invention supports the first screen module and the second screen module through a single frame to reduce the thickness of the components of the dual screen structure. In addition, the dual screen structure of the present invention senses the relative position of the first screen module and the host by the conversion module to switch the screen to at least one of the first screen module and the second screen module for use. Bring more ways to use.

The above described features and advantages of the present invention will be more apparent from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a dual screen structure in accordance with a first embodiment of the present invention. Referring to FIG. 1 , the dual screen structure 100 of the present embodiment includes a light source 110 , a light guide plate 120 , a first screen module 130 , and a second screen module 140 .

In the embodiment, the light source 110 is a light emitting diode, but the type of the light source 110 is not limited thereto. The light guide plate 120 includes a light incident surface 122, a first light exit surface 124, and a second light exit surface 126. The first screen module 130 and the second screen module 140 are respectively disposed on one side of the first light-emitting surface 124 and the second light-emitting surface 126 in parallel and opposite to each other.

The light emitted from the light source 110 enters the light guide plate 120 from the light incident surface 122 and then passes through the first light exit surface 124 and the second light exit surface 126 to the first screen module 130 and the second screen module 140, respectively.

In this embodiment, the light guide plate 120 has a trapezoidal shape, and the light incident surface 122 is a bottom surface of the trapezoid, and the first light exit surface 124 and the second light exit surface 126 are respectively two sides of the trapezoid.

In this embodiment, the first light-emitting surface 124 and the second light-emitting surface 126 are symmetric with respect to a central axis A of the light-incident surface 122. That is, the cross-sectional shape of the light guide plate 120 of the present embodiment is an isosceles trapezoid. However, the shape of the light guide plate 120 is not limited thereto. In other embodiments, the first light-emitting surface 124 and the second light-emitting surface 126 may be asymmetric with respect to a central axis A of the light-incident surface 122, which is not limited thereto.

In the embodiment, the dual screen structure 100 further includes a frame 150, and the first screen module 130 and the second screen module 140 are fixed to the frame 150. The dual screen structure 100 of the present embodiment fixes and supports the first screen module 130 and the second screen module 140 by a single frame 150 to reduce the overall thickness.

The dual screen structure 100 of this embodiment is pivotally connected and electrically connected to a host 10 to form a notebook computer. Certainly, the connection manner between the dual screen structure 100 and the host 10 is not limited thereto. In other embodiments, the dual screen structure may be directly fixed to the host or not connected to the host, as long as the dual screen structure can be electrically connected to the host. Yes, this case is not limited to this.

2A and 2B are schematic views of the dual screen structure of FIG. 1 pivotally connected to a host. Referring to FIG. 2A and FIG. 2B , when the dual screen structure 100 is pivotally connected to the host 10 , the first screen module 130 is like the inner screen of a general notebook computer, and the dual screen structure 100 can be rotated relative to the host 10 to make the first The screen module 130 is placed on or separated from the host 10. When the dual screen structure 100 is relative to When the host 10 is turned on and turned on, the screen can be displayed on the first screen module 130, and the user can use the device like a general notebook computer (as shown in FIG. 2A).

In this embodiment, the dual screen structure 100 further includes a conversion module 160. The conversion module 160 is electrically connected to the first screen module 130 and the second screen module 140, and is disposed on the host 10 relative to the dual screen. One surface 12 of the structure 100 (for example, a position on the main body where the palm of the user is placed, etc.). The conversion module 160 can sense the relative position of the first screen module 130 and the host 10 to switch the screen to display on at least one of the first screen module 130 and the second screen module 140. In other embodiments, the conversion module 160 can also be disposed at a pivotal connection between the dual screen structure 100 and the host 10. The position of the conversion module 160 is not limited thereto.

In detail, when the conversion module 160 senses that the first screen module 130 is leaning against the host, this may be that the user does not use the device and the dual screen structure 100 is placed against the host 10 to put the device into a sleep state. Or the user may want to switch the screen to the second screen module 140. At this time, the host 10 stops supplying power to the first screen module 130 and displays the two options on the second screen module 140 for the user to select. If the user chooses to enter the sleep state, the host 10 can stop supplying power to the second. Screen module 140. If the user chooses to switch the screen to the second screen module 140, the host continues to supply power to the second screen module 140 to display a picture (as shown in FIG. 2B).

In addition, the directions of the screens displayed by the first screen module 130 and the second screen module 140 may be the same or opposite. For example, when different users are respectively located in front of the first screen module 130 and the second screen module 140, When viewing the screen, the first screen module 130 and the second screen module 140 can display the same direction of the screen (that is, the bottoms of the screen displayed by the first screen module 130 and the second screen module 140 are closer to the double The pivotal structure of the screen structure 100 and the host computer 10 is configured to simultaneously view or operate the plurality of users facing the first screen module 130 and the second screen module 140.

When the user closes the dual screen structure 100 to the host computer 10 for use as a tablet computer, the user may not need to turn the device to view the screen on the second screen module 140 for the convenience of the user, the first screen module 130 and The second screen module 140 can also display the opposite direction of the screen, that is, if the bottom of the screen displayed by the first screen module 130 is closer to the pivotal connection between the dual screen structure 100 and the host 10, the second screen The bottom of the screen displayed by the module 140 is farther away from the pivotal connection between the dual screen structure 100 and the host 10.

The dual screen structure 100 of the present embodiment can be used as a notebook computer to display a screen on the first screen module 130 in a state of being pivotally connected and electrically connected to the host computer 10. When the first screen module 130 is not used, the dual screen structure 100 is rotated toward the host 10 to make the first screen module 130 contact the host 10. At this time, the screen of the host 10 can be switched to the second screen module. 140.

In this embodiment, the second screen module 140 can be a touch screen, and the user can operate the second screen module 140 in a touch manner, and the device can be used like a tablet computer to reach one. The multi-purpose effect of the machine not only meets the convenience, but also meets the economic effects. In addition, due to the storage of data Stored on the host 10, the file does not need to be managed by multiple machines, which is more in line with user benefits.

3A is a schematic illustration of a dual screen structure in accordance with a second embodiment of the present invention. Referring to FIG. 3A, the main difference between the dual screen structure 200 of FIG. 3A and the dual screen structure 100 of FIG. 1 is that the dual screen structure 200 of FIG. 3A includes two light sources 210, and the light guide plate 220 is an hourglass shape (its cross section) Close to two trapezoids with the same top surface and the same shape. As shown in FIG. 3A, the two light sources 210 are respectively disposed on the top surface and the bottom surface of the hourglass shape, and provide a more uniform surface light source of the first screen module 230 and the second screen module 240 by emitting light from opposite sides.

The shape of the light guide plate 220 is not limited to the above, as long as the light can be emitted from the first light emitting surface 224 and the second light emitting surface 226 to the first screen module 230 and the second screen module 240 simultaneously. The surface light source may be provided to the first screen module 230 and the second screen module 240.

Figure 3B is a schematic illustration of a dual screen structure in accordance with a third embodiment of the present invention. Referring to FIG. 3B , the main difference between the dual screen structure 200 ′ of FIG. 3B and the dual screen structure 200 of FIG. 3A is that the dual screen structure 200 ′ of FIG. 3B includes two light guide plates 220 ′, and the light guide plate 220 ′ is trapezoidal. The two light guide plates 220' are respectively connected by a top surface of a trapezoid. The dual screen structure 200 of FIG. 3A includes only a single light guide plate 220. Of course, the shape of the light guide plate 220 is not limited to the above.

4 is a schematic diagram of a dual screen structure in accordance with a fourth embodiment of the present invention. Referring to FIG. 4, the main difference between the dual screen structure 300 of FIG. 4 and the dual screen structure 200 of FIG. 3 is that the dual screen structure 200 of FIG. The overall thickness is reduced by the common light guide plate 220, and the double screen structure 200 of FIG. 3 is not provided with a reflective sheet. The dual screen structure 300 of FIG. 4 reduces the overall thickness by sharing the reflective sheet 310. The dual screen structure 300 of FIG. 4 will be described in detail below.

The dual screen structure 300 of the present embodiment includes a reflective sheet 310, a first backlight module 320, a first screen module 330, a second backlight module 340, and a second screen module 350. The reflective sheet 310 includes a first side 312 and a second side 314. The first backlight module 320 is disposed on the first surface 312 of the reflective sheet 310 . The first backlight module 320 includes a first light source 322 and a first light guide plate 324 . The first screen module 330 is disposed on one side of the first backlight module 320. The second backlight module 340 is disposed on the second surface 314 of the reflective sheet 310. The second backlight module 340 includes a second light source 342 and a second light guide plate 344. The second screen module 350 is disposed on one side of the second backlight module 340 , and the first screen module 330 is disposed in parallel with the second screen module 350 and facing away from each other.

As shown in FIG. 4 , the light emitted from the first light source 322 and the second light source 342 respectively enters the first light guide plate 324 and the second light guide plate 344 , and part of the light passes through the first light guide plate 324 and the second light guide plate 344 . The light is directly incident on the first screen module 330 and the second screen module 350, and the other portion of the light is emitted through the first light guide plate 324 and the second light guide plate 344 in other directions.

Since the reflective sheet 310 is located between the first backlight module 320 and the second backlight module 340, the light of the portion is reflected back to the first light guide plate 324 by the first surface 312 and the second surface 314 of the reflective sheet 310. The two light guide plates 344 are redirected to the first screen module 330 and the second screen module 350.

The dual screen structure 300 of the present embodiment shares the same reflective sheet by the first backlight module 320 that supplies the surface light source of the first screen module 330 and the second backlight module 340 that supplies the surface light source of the second screen module 350. 310 to reduce the thickness of the dual screen structure.

In summary, the dual screen structure of the present invention reduces the thickness of the dual screen structure by allowing the first screen module and the second screen module to share the light guide plate or the reflection sheet. Taking a common light guide plate as an example, the shape of the light guide plate may be trapezoidal. After entering the light guide plate, the light may enter the first screen module and the second screen module from the two sides of the trapezoid, and simultaneously the first screen module and the first The second screen module provides a surface light source.

For example, in the case of the common reflective sheet, the reflective sheet is disposed between the first backlight module and the second backlight module, so that the light that is not incident on the first screen module and the second screen module is reflected by the opposite sides of the reflective sheet. The first light guide plate and the second light guide plate are returned to the first screen module and the second screen module. In addition, the dual screen structure of the present invention supports the first screen module and the second screen module through a single frame to reduce the thickness of the components of the dual screen structure.

In addition, the dual screen structure of the present invention senses the relative position of the first screen module and the host by the conversion module to switch the screen to at least one of the first screen module and the second screen module for use. Bring more ways to use.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

A‧‧‧ center axis

10‧‧‧Host

12‧‧‧ surface

100, 200‧‧‧ double screen structure

110, 210‧‧‧ Light source

120, 220‧‧‧Light guide plate

122‧‧‧Into the glossy surface

124, 224‧‧‧ first light surface

126, 226‧‧‧ second shiny surface

130, 230‧‧‧ first screen module

140, 240‧‧‧second screen module

150‧‧‧Frame

160‧‧‧Transition module

300‧‧‧Double screen structure

310‧‧‧reflector

312‧‧‧ first side

314‧‧‧ second side

320‧‧‧First backlight module

322‧‧‧First light source

324‧‧‧First light guide

330‧‧‧First screen module

340‧‧‧Second backlight module

342‧‧‧second light source

344‧‧‧Second light guide

350‧‧‧Second screen module

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a dual screen structure in accordance with a first embodiment of the present invention.

2A and 2B are schematic views of the dual screen structure of FIG. 1 pivotally connected to a host.

3A is a schematic illustration of a dual screen structure in accordance with a second embodiment of the present invention.

Figure 3B is a schematic illustration of a dual screen structure in accordance with a third embodiment of the present invention.

4 is a schematic diagram of a dual screen structure in accordance with a fourth embodiment of the present invention.

A‧‧‧ center axis

100‧‧‧Double screen structure

110‧‧‧Light source

120‧‧‧Light guide

122‧‧‧Into the glossy surface

124‧‧‧The first glazing

126‧‧‧second glazing

130‧‧‧First screen module

140‧‧‧Second screen module

150‧‧‧Frame

Claims (10)

A dual screen structure, comprising: a light source; a light guide plate, comprising a light incident surface, a first light emitting surface and a second light emitting surface; a first screen module disposed on one side of the first light emitting surface; And a second screen module disposed on one side of the second light emitting surface, the first screen module and the second screen module are disposed in parallel and opposite to each other, wherein: the light emitted by the light source is from the light entering After entering the light guide plate, the first light emitting surface and the second light emitting surface are respectively incident on the first screen module and the second screen module. The dual-screen structure of claim 1, wherein the light guide plate has a trapezoidal shape, and the light incident surface is a bottom surface of the trapezoid, and the first light exit surface and the second light exit surface are respectively two sides of the trapezoid . The dual screen structure of claim 1, wherein the first light emitting surface and the second light emitting surface are symmetric with respect to a central axis of the light incident surface. The dual screen structure of claim 1, further comprising: a frame, the first screen module and the second screen module being fixed to the frame. The dual screen structure as described in claim 1 further includes: a conversion module electrically connected to the first screen module and the second firefly The screen module is electrically connected to a host. The dual screen structure of claim 5, wherein the conversion module is disposed at a pivotal connection between the dual screen structure and one of the hosts or a surface of the host relative to the dual screen structure. A dual-screen structure includes: a reflective sheet comprising a first surface and a second surface; a first backlight module disposed on the first surface of the reflective sheet, the first backlight module including a first a light source and a first light guide plate; a first screen module disposed on one side of the first backlight module; a second backlight module disposed on the second side of the reflective sheet, the second backlight mode The second light source module and the second light guide plate are disposed on one side of the second backlight module, and the first screen module is parallel to the second screen module and faces away from the second screen module. Ground setting. The dual screen structure as described in claim 7 further includes: a frame, the first screen module and the second screen module being fixed to the frame. The dual screen structure as described in claim 7 further includes: a conversion module electrically connected to the first screen module and the second screen module, the dual screen structure being electrically connected to a host . The dual screen structure of claim 9, wherein the conversion module is disposed at a pivotal connection between the dual screen structure and one of the hosts or a surface of the host relative to the dual screen structure.