JPS62194278A - Liquid crystal display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Portion of the Invention] The present invention relates to a liquid crystal display device for displaying information such as images.

[Background of the Invention] A flat-screen LCD TV that displays one image using a liquid crystal panel with an angle of 1 degree has been realized, but those using a TN (twisted nematic) type liquid crystal display panel have viewing angle characteristics. Therefore, the screen can only be viewed clearly from a certain direction, and this problem is especially serious with wall-mounted devices.

[Objective of the Invention 1 This invention was made in consideration of the circumstances mentioned in 1-1 above, and its purpose is to provide a liquid crystal display device whose screen can be viewed clearly from any direction. Our goal is to provide the following.

[Summary of the Invention] In order to achieve the first objective as described in item t, this invention is designed to allow the orientation of a liquid crystal display panel that displays information such as images to be freely changed with respect to the case body. be.

[Embodiment] Hereinafter, with reference to the drawings, an embodiment of the present invention applied to a wall-mounted television will be described based on FIGS. 1 to 3.

1 in FIG. 1 is the case body. This case body 1 is a thin box-shaped one with a thickness of about 3 cm, and a liquid crystal display panel 2 is arranged on the front.An operation switch 3 is provided in the left corner of the front. A wall hook 4 is provided on the L treble side.The liquid crystal display panel 2 displays the radio waves received by a receiving circuit (not shown) provided inside the case body 1 as an image. A backlight (not shown) is attached to the back surface and is placed in an opening la formed in the case body l.At the center of the back side of the liquid crystal display panel 2 is a backlight (not shown) as shown in FIG. A support shaft 5 is sunk in the support shaft 5, and the tip of the support shaft 5 is attached to the inside of the case body l by a pole joint 6. The spherical portion 6a is rotatably supported by the spherical bearing 6b, thereby allowing the liquid crystal display panel 2 to be placed within the opening la of the case body 1. Hold it so that it is tilted in this direction.

The inclination of the liquid crystal display panel 2 is changed depending on the driving device 7 shown in FIG. That is, this drive device 7 rotates the spherical portion 6a at the tip of the support shaft 5 in the horizontal direction (X-axis direction) and the vertical direction (Y-axis direction) using two motors 8.9, thereby driving the liquid crystal display panel. 2, and each motor 8.9 is connected to the pole joint 6.
One motor 8 is arranged in the horizontal direction, and the other motor 9 is arranged in the vertical direction. Each motor 8
, 9, drive teeth 11iio, it are attached to the output shafts 8a, 9a, and the driven gear 1
2.13 meshes, this subordinate Sl&111j12.13
and the spherical portion 6a of the pole joint 6 is provided with a joint. Therefore, each rotation of the motor 8°9 is caused by the rotation of the gA drive tooth 1.
10.11. The spherical part 6 of the support shaft 5 is
a, the support shaft 5 is rotated horizontally (X-axis direction) by a motor 8, and vertically (Y-axis direction) by a motor 9, thereby changing the tilt of the liquid crystal display panel 2. . In this embodiment, the motors 8.9 do not operate at the same time, and only one of them rotates forward or reverse depending on the operation of the operation switches 2 and 3. Also, for example, -・
with the other motor 8 operating and rotating the support shaft 5 by a predetermined angle.

Even when the other motor 9 operates, its rotation is efficiently transmitted to the spherical portion 6a of the support shaft 5 by the universal joint 15. Note that each motor 8.9 is driven by a drive circuit 16 inside the case body l. This drive circuit 16 sends 4 drive signals to each motor 8.9 in response to operation of an operation switch 3 provided at the left corner of surface 1ii of the case body L.
The operation switch 3 consists of four operation buttons 3a to 3d, and these operation buttons 3a to 3d can be used to control the left and right directions (X-axis direction) and the downward direction (Y-axis direction). 4
The type of information 5) is entered. Also.

This wall-mounted TV is equipped with a remote controller 17,
The remote controller 17 is also configured so that the direction of the liquid crystal display panel 2 can be changed by driving the drive circuit 16 by operating a recessed operation switch 18.

However, according to the TV, the wall hanging configured as described in 1- above can be operated by operating the operation switch 3 on the case body l or the operation switch 18 on the remote controller 17.
Since the liquid crystal display panel 2 can be tilted freely in the direction of α, even if a TN type liquid crystal display panel with viewing angle characteristics is used, a good screen with high contrast can be viewed from any direction. I can do it.

In the embodiment described above, the rotation of each motor 8.9 is controlled by the drive teeth l1f10.11. Although the support shaft 5 of the liquid crystal display panel 2 is rotated via the driven tooth $1 (12, 13 degrees) and the unique joint 14.15, the present invention is not limited to this. motor 8.9
The rotation of the support shaft 5 may be transmitted to the spherical portion 6a of the support shaft 5 using a wire or the like.Alternatively, the rotation of the support shaft 5 may be supported by a pole joint 6 without using a motor 8, 9, etc. The display panel 2 may be tilted.

Furthermore, although the embodiment described above has been described with respect to a wall-mounted television, the present invention is not limited to this, but can be widely applied to devices that display predetermined information on a liquid crystal display panel, such as those for advertising. I can do it.

[Effects of the Invention] As described in 1-1 above, according to the liquid crystal display device of the present invention, the orientation of the liquid crystal display panel that displays information such as images can be freely changed, so that it can be viewed from any direction. However, it has the great advantage of being able to see the screen clearly.

[Brief explanation of drawings]

The figures show an embodiment in which the present invention is applied to a wall-mounted television; FIG. 1 is a perspective view of its appearance, FIG. 2 is a sectional view taken along line A-A, and FIG. 3 is a diagram showing its internal structure. l...The case itself? ....Liquid crystal display panel, 5..Support shaft, 6..Pole joint.

Claims (1)

[Claims] A liquid crystal display device characterized in that the orientation of a liquid crystal display panel that displays information such as images can be freely changed with respect to a case body in which the liquid crystal display panel is attached.