JPH06289380A - Liquid crystal panel equipped with lens - Google Patents

Abstract

PURPOSE:To provide a liquid crystal panel equipped with lens capable of attaining plural screen sizes even in the case of using the liquid crystal panel in common, and also capable of reducing the material cost of the liquid crystal panel. CONSTITUTION:A liquid crystal television using the liquid crystal panel equipped with lens is constituted of a TFT liquid crystal panel 10, a back light 12, a back light driving circuit 14, a convex lens 16, a concave lens 18 and a housing 20 for holding the aforesaid parts at each prescribed position. The video of the TFT liquid crystal panel 10 controlled and displayed by a panel driving circuit is enlarged by a lens group constituted of the convex lens 16 and the concave lens 18 and functioning as a convex lens as a whole so that the video may be displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-equipped liquid crystal panel used in a video device having a liquid crystal panel.

[0002]

2. Description of the Related Art In recent years, liquid crystal device technology has been remarkably developed, and in particular, a matrix type liquid crystal display capable of displaying an image on a pixel-by-pixel basis has entered a practical stage in terms of both manufacturing technology and cost. For example, color liquid crystal panels are used for movies such as 8 mm video, and portable small liquid crystal televisions are on the market.

[0003]

By the way, in the above-mentioned movies, small-sized liquid crystal televisions, etc., since a full-sized liquid crystal panel is used, the display portion can be made thin, but the screen size can be easily reduced. There was a problem that it could not be changed.

Generally, the screen size is determined for each product on the market, but if it can be shared, it is shared with other products, and if it cannot be shared, a new size liquid crystal panel is designed. . Therefore, as a result, liquid crystal panels of a plurality of sizes are prepared, and the cost of designing and manufacturing increases.

Further, when a full-size liquid crystal panel is used, a liquid crystal for the screen size and its driving electrodes are required, and there is a problem that the larger the screen size, the more the material cost becomes.

Therefore, an object of the present invention is to provide a liquid crystal panel with a lens, which can realize a plurality of screen sizes even when the liquid crystal panel is shared and which can reduce the material cost of the liquid crystal panel. To do.

[0007]

In order to solve the above-mentioned problems, a lens-equipped liquid crystal panel according to the present invention is a liquid crystal panel for displaying an image on a pixel-by-pixel basis, and the liquid crystal panel for each pixel is based on an image signal. The panel drive unit for driving, and one or a plurality of lenses arranged on the upper surface of the liquid crystal panel and functioning as a convex lens when alone or in combination are provided, and the one or more images displayed on the liquid crystal panel are provided. It is characterized in that it is magnified by the lens.

[0008]

In the lens-equipped liquid crystal panel of the present invention, the image of the liquid crystal panel driven by the panel driving section is enlarged by one or a plurality of lenses functioning as convex lenses as a whole. Therefore, even when a liquid crystal panel of one size is used, a plurality of screen sizes can be realized by changing the magnification of this convex lens. Moreover, since the lens is used to enlarge the image to a predetermined screen size, the size of the liquid crystal panel, which is the enlargement source, can be small, and the material cost can be reduced.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

First Embodiment FIG. 1 shows a first embodiment to which the lens-equipped liquid crystal panel of the present invention is applied.
It is a figure which shows the cross-section of the liquid crystal television of the Example.

The liquid crystal television shown in FIG. 1 includes a TFT (thin film transistor) liquid crystal panel 10, a backlight 12, a backlight drive circuit 14, a convex lens 16 and a concave lens 1.
8 and a housing 20 for holding them at a predetermined position.

The TFT liquid crystal panel 10 is an active matrix type liquid crystal display and includes a plurality of scanning electrodes and signal electrodes. Compared with the diode type, it is characterized in that a high-quality image can be easily obtained, the signal transmission characteristics are excellent, halftones can be uniformly displayed, and large-capacity display is possible.

The TFT liquid crystal panel 10 uses polysilicon (p-Si) TFTs. p-Si
Has a high mobility, so that it can be integrated with a drive circuit, and the pixel can have a high density. In this embodiment, for example, a 0.7 inch TFT liquid crystal panel 10 is used.

The backlight 12 is a TFT liquid crystal panel 10.
The backlight drive circuit 1 is to be lit behind
Reference numeral 4 is for driving the backlight 12. The backlight 12 is attached to one surface of a substrate 13, and the backlight drive circuit 14 is sandwiched by the substrate 13.
Is equipped with.

The pair of convex lens 16 and concave lens 18 are
When combined, it functions as a convex lens as a whole. One convex lens 16 is a main lens, and the other concave lens 18 is a compensating lens for removing the influence of aberration and the like. In this way, the two lenses 16,
Although the method of combining 18 is generally performed, the curvature of each lens is adjusted to enlarge each pixel on the liquid crystal panel 10 substantially uniformly.

As shown in FIG. 1, a TFT liquid crystal panel 10 is provided.
The concave lens 18 is arranged in front of the convex lens 16 and the convex lens 16 is arranged in front of the concave lens 18. Further, a protective glass 22 is attached further in front of the convex lens 16 to prevent dust and dust from entering and prevent the convex lens 16 from being mechanically damaged.

In particular, the concave lens 18 described above is preferably separated from the TFT liquid crystal panel 10 by at least 5 mm or more. By separating the concave lens 18 from the TFT liquid crystal panel 10 in this way, it is possible to reduce the adverse effect on the screen due to lens distortion or scratches. Further, it is possible to prevent the adverse effect that the pixel and the distortion interfere with each other to cause the moire.

FIG. 2 is a diagram showing the overall structure of the liquid crystal television of the first embodiment, the cross sectional structure of which is shown in FIG.

The liquid crystal television shown in FIG. 2 has the above-mentioned TF.
In addition to the T liquid crystal panel 10, the backlight 12, the backlight drive circuit 14, the convex lens 16 and the concave lens 18, a panel drive circuit 3 for displaying an image on the liquid crystal panel 10
0, a video signal processing circuit 32, a tuner circuit 34 for separating an audio signal and a video signal received by an antenna 40 into a predetermined frequency or a predetermined band, an audio circuit 36 for outputting a television sound, and a speaker 38. ing.

The panel driving circuit 30 inputs a scanning signal of a predetermined cycle to each of the scanning electrodes of the TFT liquid crystal panel 10, and inputs the RGB color signals extracted from the video signal to each of the signal electrodes.

The video signal processing circuit 32 is the tuner circuit 3
The video signal (NTSC signal) output from 4 is converted into an RGB signal. The converted RGB signal is input to the panel drive circuit 30 described above.

The tuner circuit 34 separates a television video signal and an audio signal from radio waves received by the antenna 40 for each broadcasting station, inputs the video signal to the video signal processing circuit 32, and inputs the audio signal to the audio circuit 36. To do.

The audio circuit 36 amplifies the audio signal input from the tuner circuit 34, and the amplified audio signal is output from the speaker 38.

In the case of manufacturing such a liquid crystal television by changing the screen size, it is only necessary to change the focal lengths of the convex lens 16 and the concave lens 18. Alternatively, a combination of three or more lenses may function as a convex lens as a whole.

Therefore, one size liquid crystal panel 10 is used.
Even in the case of using, it is possible to realize a plurality of screen sizes by changing the magnification of the lens. Therefore, the liquid crystal panel 10 can be shared with a liquid crystal television having another screen size, and manufacturing and design costs can be suppressed.

Further, since the liquid crystal panel 10 having a size smaller than the screen size can be used, the yield is improved and the material cost is reduced as compared with the case of using a full-size liquid crystal panel.

It should be noted that the use of p-SiTFT enables a higher density, and a good image quality can be obtained even when the image is magnified by a lens. Therefore, there is no problem in actually using the image quality. .

Second Embodiment FIG. 3 shows a second embodiment to which the liquid crystal panel with lens of the present invention is applied.
It is a figure which shows the external appearance of the remote control (henceforth "remote control") apparatus with a monitor screen of an Example. The remote control device with a monitor screen has a liquid crystal panel 10 for displaying a video signal transmitted by wire or wirelessly from a video device to be operated by the remote control. The liquid crystal panel 10 includes a convex lens 16 and a concave lens 18. The display screen is enlarged by the combination lens consisting of.

As shown in the figure, in the remote control device of this embodiment, a monitor display screen is arranged above the operation surface, and a plurality of operation keys are arranged below the display screen. The sectional structure around the display screen is similar to that of the liquid crystal television shown in FIG. 1, and the concave lens 1 is provided in front of the TFT liquid crystal panel 10.
8 and a convex lens 16 is arranged in front of it.

FIG. 4 is a diagram showing the overall structure of the remote control device with monitor screen of the second embodiment, the appearance of which is shown in FIG.

The remote control device with a monitor screen shown in FIG. 4 is a TFT liquid crystal panel 10 for displaying an image of a video device to be operated by the remote control on a monitor, a panel drive circuit 30, a video signal processing circuit 32, and a backlight 12. , The backlight drive circuit 14, the remote control operation circuit 40 for operating the remote control, the operation keys 42, the infrared LED 44
And a power supply circuit 50 that supplies an operating voltage to each unit.

TFT liquid crystal panel 10, panel drive circuit 3
The operations of 0, the video signal processing circuit 32, the backlight 12, and the backlight driving circuit 14 are basically the same as those in the above-described first embodiment, and detailed description thereof will be omitted. The video signal processing circuit 32 in this embodiment processes the video signal of the video equipment input through the video input terminal 33.

The remote control operation circuit 40 detects the operation status of the operation key 42, superimposes a signal corresponding to the operation status on a carrier wave of a predetermined frequency and outputs the signal, and causes the infrared LED 44 to emit light according to the output signal. This infrared LED4
When the infrared rays output from 4 reach the infrared receiving section of the video equipment, the operation of the video equipment main body is performed according to the pressing state of the operation key 42, for example, tape reproduction in the case of a VCR,
Rewinding and fast-forwarding are performed.

The power supply circuit 50 is for applying a predetermined operating voltage to each component of the remote control device with a monitor screen according to the present embodiment. For example, it uses four AA type dry batteries, The operating voltage of each component is made from the power supply voltage of 6V. Further, an ON / OFF signal from the remote control operation circuit 40 is input to the power supply circuit 50. This ON
The application of the operating voltage is started according to the signal, and the application of the operating voltage is stopped according to the OFF signal.

As described above, even when the present invention is applied to a remote control device with a monitor screen, the liquid crystal panel 10 is smaller than the actual display screen and has one size.
Is the same as in the above-described first embodiment in that the cost and the material cost can be reduced.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention.

For example, in the above-mentioned embodiments, the case of using the p-Si TFT liquid crystal panel 10 has been described as an example, but the present invention can be applied to the case of using a liquid crystal panel other than amorphous silicon or TFT. it can.

In this embodiment, the case where the convex lens 16 and the concave lens 18 are combined to magnify the image on the TFT liquid crystal panel 10 has been described. However, one convex lens is used to magnify the image, or three or more images. The lens may be combined to enlarge the image.

Further, in the above-mentioned embodiment, the present invention is applied to the liquid crystal television and the remote control device with the monitor screen, but the present invention can be applied to other equipment as long as it is a video equipment having a liquid crystal panel. . Alternatively, a Fresnel lens may be used to enlarge the image.

[0040]

As described above, according to the present invention, even when a liquid crystal panel of one size is used, a plurality of screen sizes can be realized by changing the magnification of the lens. You can

Further, since the image is enlarged to a predetermined screen size by the lens, the size of the liquid crystal panel which is the enlargement source can be small, so that the material cost can be reduced.

[Brief description of drawings]

FIG. 1 is a first example in which a liquid crystal panel with a lens of the present invention is applied
It is a figure which shows the cross-section of the liquid crystal television of the Example.

FIG. 2 is a diagram showing an overall configuration of the liquid crystal television of the first embodiment whose sectional structure is shown in FIG.

FIG. 3 is a second example of applying the liquid crystal panel with a lens of the present invention.
It is a figure which shows the external appearance of the remote control device with a monitor screen of an Example.

FIG. 4 is a diagram showing an overall configuration of a remote control device with a monitor screen according to a second embodiment of which the appearance is shown in FIG.

[Explanation of symbols]

 10 TFT liquid crystal panel 12 backlight 14 backlight drive circuit 16 convex lens 18 concave lens 30 panel drive circuit 32 video signal processing circuit 34 tuner circuit 36 audio circuit

Claims (4)

[Claims] 1. A liquid crystal panel for displaying an image on a pixel-by-pixel basis, a panel drive unit for driving the liquid crystal panel for each pixel based on an image signal, and a liquid crystal panel disposed on the upper surface of the liquid crystal panel, either alone or in combination. 1. A liquid crystal panel with a lens, comprising: one or a plurality of lenses functioning as a convex lens, and magnifying an image displayed on the liquid crystal panel by the one or a plurality of lenses. 2. The lens according to claim 1, wherein the plurality of lenses functioning as a convex lens when combined with each other, a concave lens disposed near the liquid crystal panel to remove an influence of aberration and a predetermined distance from the liquid crystal panel. A liquid crystal panel with a lens, comprising at least a convex lens arranged at a mere position, and enlarging pixels displayed in a plane on the liquid crystal panel substantially uniformly. 3. The liquid crystal panel with a lens according to claim 2, wherein the concave lens near the liquid crystal panel is separated from the liquid crystal panel by at least 5 mm or more. 4. The liquid crystal panel with a lens according to claim 1, wherein the liquid crystal panel is formed by using a polysilicon thin film transistor.