JP2747241B2 - Liquid crystal display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device for use in office automation equipment and the like for displaying information in a plane, and more particularly to a double-sided liquid crystal display device capable of displaying information on both sides.

[0002]

2. Description of the Related Art A conventional liquid crystal display device used in an OA device or the like for displaying information in a planar manner can only display at a resolution unique to the liquid crystal display device. Even if the main body has the ability to instruct display of various resolutions, it is impossible to make full use of that ability.

[0003]

As described above, the conventional liquid crystal display device can only display at a resolution unique to the liquid crystal display device, and therefore the OA equipment main body can display various resolutions. There is a problem that even if the user has the ability to instruct, the ability cannot be fully utilized.

In order to solve this problem, it is possible to adopt a means of replacing a liquid crystal display device having a resolution corresponding to the resolution required by the OA equipment main body with the OA equipment main body. However, there is a disadvantage that a plurality of types of liquid crystal display devices must be prepared, and in particular, when going out, a large number of liquid crystal display devices must be carried around, which is extremely inconvenient.

[0005]

The liquid crystal display device of the present invention incorporates a flat display module provided with two liquid crystal display panels having different resolutions on both front and back sides, and is mounted in an OA apparatus body in an invertible manner. It is possible to determine which of the two liquid crystal display panels faces the user of the OA device and use the display screen properly.

That is, the liquid crystal display device of the present invention is different in that a double-sided reflection plate, two light guide plates provided on both sides of the double-sided reflection plate, and a light guide plate provided outside each of the two light guide plates are provided. Two liquid crystal display panels having resolution, two shield plates provided outside each of the two liquid crystal display panels, and two liquid crystal panels provided on respective sides of the two liquid crystal display panels A flat display module having a fluorescent tube, and two mold members sandwiching the flat display module on both sides, and in particular, one of the two shield plates of the flat display module. A control board is mounted on a shield plate, and the control board, when a display signal is input from the main body of the OA device, has a resolution indicated by the display signal and the two liquid crystal displays. When the resolution of the liquid crystal display panel facing the user of the OA device in the panel is the same, the display signal is sent to the liquid crystal display panel for display, and the display signal from the main body of the OA device is transmitted. A backlight control signal is sent to a corresponding fluorescent tube to light it, and the resolution indicated by the display signal and the resolution of the liquid crystal display panel of the two liquid crystal display panels facing the user of the OA device are used. Are not the same, the OA
A control circuit for sending a signal to a main body of the device, wherein a connection substrate is attached to one of the two mold members, and the connection substrate is connected to the two liquid crystal display panels; And a control circuit for judging which of the liquid crystal display panels is facing the user of the OA equipment and notifying the control board.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view showing a flat display module of one embodiment of FIG. 2, FIG. 2 is an exploded perspective view showing one embodiment of the present invention, and FIG. 3 is a block diagram showing a control circuit of the embodiment of FIG. FIG.

In this embodiment, as shown in FIG. 2, a flat display module 10 having liquid crystal display panels provided on both front and back surfaces is housed in a box-shaped first mold member 11, and a flat second module is placed thereon. The two mold members 12 are placed on one liquid crystal display device. The first mold member 11 and the second mold member 12 are provided with openings 11a and 12a at the center, respectively, from which the liquid crystal display panel of the flat display module 10 can be seen. The first molding member 11 is also provided with a connection substrate 13 for connecting to the OA equipment body. The connection substrate 13 is used for the flat display module 10.
Has a circuit for determining which of the two liquid crystal display panels is facing the user of the OA device.

The flat display module 10 is shown in FIG.
As shown in FIG. 3, a double-sided reflector 3 for reflecting light from a fluorescent tube
The light guide plates 2 and 4 are provided on both sides of the liquid crystal display panel, and a liquid crystal display panel (L) for displaying information sent from the OA device main body is provided outside each of the light guide plates 2 and 4.
CD panels) 1 and 5 are provided. LCD panel 1
And the LCD panel 5 have different resolutions. These are sandwiched between shield plates 8a and 8b provided outside the LCD panels 1 and 5. A control board 9 is mounted on an extension on the front side of the shield plate 8a.
Are provided with fluorescent tubes 6 and 7, respectively.

The liquid crystal display device configured as described above has
It works as follows. That is, as shown in FIG. 3, when the first control circuit 21 provided on the control board 9 inputs the display signal 41 from the OA device main body, the display signal 41 Is specified. For example, if the display signal 41 is an LCD
When the resolution of the panel 1 is specified, and it is recognized by the instruction signal 44 from the third control circuit 23 of the connection board 13 that the LCD panel 1 is facing the user of the OA device. Since the information of the display signal 41 can be displayed on the LCD panel 1, the information signal 45 is sent to the LCD panel 1 for display. At this time, since the instruction signal 44 is also sent from the connection board 13 to the second control circuit 22 of the control board 9, the second control circuit 22 transmits the backlight control signal 42 from the OA device body to the backlight. The light is sent as a signal 46 to the fluorescent tube 6 to be turned on.

When the display signal 41 specifies the resolution of the LCD panel 1 and the LCD panel 5 is facing the user of the OA equipment, it is difficult to display the display signal 41 on the LCD panel 1. Because it is appropriate, the first control circuit 21 sends an output signal 43 to the OA device main body,
A message "Please flip the LCD panel" is displayed. The same operation is performed on the LCD panel 5.

[0013]

As described above, the liquid crystal display device of the present invention incorporates a flat display module provided with LCD panels having different resolutions on both front and back sides, and is mounted reversibly on the OA equipment main body. By judging which of the liquid crystal display panels faces the user of the OA device and displaying the displayable information,
There is an effect that it is possible to easily display information at a resolution desired by a user of the OA device, and thus it is possible to obtain an OA device that is easy to handle.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention.

FIG. 2 is an exploded perspective view showing an assembling method of the embodiment of FIG. 1;

FIG. 3 is a block diagram showing a control circuit of the embodiment of FIG.

[Explanation of symbols]

 1.5 Liquid crystal display panel (LCD panel) 2.4 Light guide plate 3 Double-sided reflection plate 6.7 Fluorescent tube 8a / 8b Shield plate 9 Control board 10 Flat display module 11 First mold member 12 Second mold member 13 For connection Substrate 21 First control circuit 22 Second control circuit 23 Third control circuit 41 Display signal 42 Backlight control signal 43 Output signal 44 Instruction signal 45 Information signal 46 Backlight signal

Claims (2)

(57) [Claims] 1. A double-sided reflection plate, two light guide plates provided on both sides of the double-sided reflection plate, and two liquid crystal displays having different resolutions provided outside each of the two light guide plates. A flat display module, comprising: a panel; two shield plates provided outside each of the two liquid crystal display panels; and two fluorescent tubes provided on each side of the two liquid crystal display panels. A liquid crystal display device, comprising: and two mold members that sandwich the flat display module on both sides. 2. A double-sided reflection plate, two light guide plates provided on both sides of the double-sided reflection plate, and two liquid crystal displays having different resolutions provided outside each of the two light guide plates. A panel, two shield plates provided outside each of the two liquid crystal display panels, two fluorescent tubes provided on each side of the two liquid crystal display panels, A flat display module having a control substrate mounted on one of the shield plates, two mold members sandwiching the flat display module on both sides, and one of the two mold members A connection substrate attached to two mold members, wherein the connection substrate determines which of the two liquid crystal display panels is facing the user of the OA device. The said system A control circuit for notifying the control board, the control board, when a display signal is input from the main body of the OA device, the resolution indicated by the display signal and the two liquid crystal display panels of the When the resolution of the liquid crystal display panel facing the user of the OA device is the same, the display signal is sent to the liquid crystal display panel for display, and the backlight control signal from the main body of the OA device is transmitted. It is sent to the corresponding fluorescent tube and turned on, and the resolution indicated by the display signal does not match the resolution of the liquid crystal display panel of the two liquid crystal display panels facing the user of the OA device. A liquid crystal display device having a control circuit for transmitting a signal to a main body of the OA device.