JPH0470693A - Flat display device - 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 [Field of Industrial Application] The present invention relates to a flat display device, and relates to a technique that is effective for use in, for example, a flat display device using a liquid crystal display panel.

[Conventional technology]

A transmissive liquid crystal display device is used for projection by an OHP projector (hereinafter sometimes referred to as a vehicle OHP).

Regarding such OHP, for example, Nikkei McGraw-Hill, February 6, 1989 issue, "Nikkei Personal Computer", pages 150-
There are page 153.

This liquid crystal display device for OHP is connected to a Bahzl computer or a lamp-top Bahzl computer, and uses display data created by these personal computers to display enlarged characters, images, etc. on the screen. It is something to do.

[Problems to be Solved by the Invention] In the prior art, flat display devices such as liquid crystal display devices are provided in one-to-one correspondence with each device, such as for a laptop knob type personal computer or for an OHP. It is something.

The inventors of the present application focused on the fact that similar liquid crystal display devices are used for both personal computers and OHPs, and sought to simplify the system by making one liquid crystal display device usable for multiple purposes, while improving usability. I thought about getting a good flat display device.

An object of the present invention is to provide a novel flat display device that achieves multi-functional display with a simple configuration.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[Failure to solve the problem]

A brief overview of typical inventions disclosed in this application is as follows.

That is, a flat display device has a built-in power supply device and a memory device, or has only a memory device built-in and is supplied with power from the outside to enable independent display operation according to display data stored in the memory device. The flat display device is connected to the processor main body and used as its display device, and display data and display procedures thereof are written in the memory device.

Alternatively, the memory device may be read-only, and display data and display procedures may be written to the memory medium by another processor. The above-mentioned flat display device uses a liquid or crystal panel and can be used for display operations using an Oherhesod projector.

[For production]

According to the above-mentioned means, since a power supply and a memory device are built in, a certain offline display operation can be performed using only the flat display device, and it becomes possible to use it as a so-called table-top presentation tool. It can be connected to the processor itself and the display data and layout can be set, giving it a high level of versatility. By using a liquid crystal panel as the flat display device, display using an over-the-groove projector with a simple configuration is also possible.

〔Example〕

FIG. 1 shows a schematic external perspective view of an embodiment of a laptop personal computer using a flat display device according to the present invention.

In the lamp-top personal computer of this embodiment, the keyboard and main body are integrally constructed. The flat display device is not only stored attached to the main body and overlapped with the keyboard similarly to a conventional laptop-type personal computer, but also in this embodiment, it can be removed from the main body itself. be made into In other words, this example's hula...
- The display device is made detachable from the main body of the personal computer.

In order to enable a constant display operation even when the flat display device is removed from the laptop/7-inch personal computer, the flat display device has a built-in power supply and a memory device. The power supply includes, but is not particularly limited to, a control circuit that performs display control operations. In order to enable display using such a built-in power source, a liquid crystal display panel that can be driven by a battery is used in a flat display device, although this is not particularly limited.

Since the memory device is driven by a built-in power supply (battery) like the display device, it is required to have low power consumption. In addition, it is required to be small and thin so that it can be built into a relatively thin liquid crystal display panel. For this reason, although not particularly limited, an optical disk memory device as described below is used as the memory device.

The optical disk memory device used in this embodiment is described in detail in the specification of the applicant's earlier application (Japanese Patent Application No. 1-249154), and its outline is as follows.

FIG. 5 shows a conceptual diagram of an information processing device using the above optical disk memory device, and FIG. 6 shows a plan view and a sectional view of an embodiment of the optical disk as the memory medium. There is.

The memory device of this embodiment uses an optical disk enclosed in a transparent protective case. The optical disk in the transparent protective case is made into a card shape as shown in FIG. 6, and is detachable from the disk drive device shown by the dashed line in FIG. 5. The disk drive device includes an optical head that writes/reads information on the inserted optical disk;
It is equipped with a motor and a drive circuit that rotate the optical disc inserted into the transparent protective case. Optical head can read/write and erase (play/record and erase)
I do. The drive circuit has a data demodulation function for modulating and reproducing data for writing and erasing. The drive circuit also controls the rotation of the motor.

It is connected to a processor that performs various information processing operations via a drive circuit. The processor executes arithmetic processing or recording/reproduction on an optical disk based on commands from an input means such as a keyboard, and, as necessary, outputs the contents recorded on the optical disk or the results of arithmetic operations using an output means such as a flat display device or printer. Output.

As shown in FIG. 6, the optical disc is housed in a credit card-sized protective case that has been widely used in the past. Here, in the optical disc, at least the light beam incident part of the protective case shown by the dotted line in the figure is constituted by a transparent protective plate.

It goes without saying that there is no problem in making the entire protective case transparent.

In conventional optical disk devices, when a light beam is input,
The door of the protective case was opened and a light beam was directed directly onto the optical disc. For this reason, since dust and dirt enter through the light beam entrance door, it was necessary to use a 1.2n transparent substrate as a countermeasure.

On the other hand, in the optical disc of this example, the incident part of the light beam is covered with a transparent protective case, so dust and dirt do not attach directly to the optical disc, and there is no need to use a protective case to support the optical disc medium. The thickness of the substrate is 1.
There is no need for it to be 2m.

The optical disc is not fixed inside the protective case, but is allowed to rotate freely inside the case. This reduces the thickness of the optical disc, including the transparent protective case, by approximately 1.
．． It can be formed as thin as eight cranes. In order to prevent dirt and dust from entering the central part where the rotation axis of the optical disc is located, a dustproof mat is laid in the non-recording area in the central part or a bearing is provided to eliminate the open part (not shown). is desirable. A magnetic clamp provided on the optical disk is used to mechanically connect it to the rotating shaft of the motor. By using such a magnetic clamp, it is possible to easily attach and detach (replace) a card-shaped optical disk and a memory device (disk drive device).

The storage capacity of the optical disc of this example can be estimated as follows.

In the field of IC cards and memory cards, the external dimensions of cards have already been standardized, and the external dimensions are approximately 54 cranes x 86 cranes. Since the optical disk memory (memory card) of this embodiment is also intended to be used as a portable memory, it is formed to approximately match the size of the card of the above standard. That is, the transparent protective case is formed to meet the above standards.

Since the width of the transparent protective case is 54 mm, if we take 1 fi for each border, the external size of the optical disc will be 5 mm.
It is desirable to reach 0 cranes or less. Further, since it is desirable that the storage area within the optical disk is about one square inch inside from the outer shape of the disk, the outer diameter of the storage area is set to about 48 mm. On the other hand, the inner diameter of the storage area is determined by the size of the hub for rotation of the disk and the size of the disk holding part, and it is sufficient if the disk holding part is about 15 to 28 m. As for the above, the area of the disk with an inner diameter of 15 mm and an outer diameter of 48 mm can be used as a storage area.

For example, the memory capacity when 24 to 48 m is used as a storage area is calculated as follows. If the optical system of a normal optical disc is used, the track spacing is 1
．． Since 6 μm is used, approximately 7500 tracks can be formed by calculating the number of tracks from this. Further, since the bit density is approximately 1.4 μm/bit, the number of bits per track is approximately 53.8 Kbits. Therefore, the overall storage capacity can be as large as approximately 50 MB (megahyde) even though it is a small card-like memory as described above.

The disk drive device shown in FIG.
The lenses of the optical system for reproduction and erasing are assembled in a stacked manner. As mentioned above, the card is thin, and by using a reversible phase change optical disk as described below, which does not require a magnetic head for recording and erasing as a storage medium, unlike conventional optical disk devices, the optical system It can also be formed as thin as 5 cranes. This results in
The thickness of the disk drive device as a whole can also be reduced to about 10 fi.

An overview of the principles of recording, erasing and reproducing on phase change optical discs is as follows:
It is as follows.

Recording is achieved by irradiating a recording medium with a relatively high-power laser beam, melting the recording film, and then cooling the recording film to bring it into an amorphous state. Erasing involves irradiating the recording medium with relatively low power laser light.
This is achieved by crystallizing an amorphous recording film. For reproduction, the recording medium is irradiated with a laser beam of even lower power, and information is reproduced based on the difference in reflectance between the amorphous state and the crystalline state. An example of a recording film having such properties is an In-3b-Te type recording film.

By configuring a memory device using the above-mentioned optical disk card and disk drive device,
A memory device can be built into a flat display device using a liquid crystal panel or the like as shown in FIG. 1 without making the thickness particularly thick.

In FIG. 1, when the flat display device is attached to and electrically connected to the laptop personal computer, the power necessary for the operation of the flat display device is supplied from the power supply of the laptop personal computer, although this is not particularly limited. In response to the voltage supply, display operations and memory device read/write operations are performed.

By doing so, the battery life when a battery is used as a built-in power source in a flat display device is extended.

In this state, character and graphic data to be displayed is created in the memory device by keyboard operations and data processing according to the program of the memory device installed in the main unit, such as a floppy disk, and is stored in the memory device built in the flat display device. written. This memory device can secure a large storage capacity by using a card-shaped optical disk as described above. Therefore, this optical disk stores not only character and graphic information but also a control program for controlling the display operation thereof. This display program is transmitted to a display controller included in the power supply and is used to control relatively simple display modes such as scrolling and page designation.

Currently, a desktop presentation tool is a video tape recorder (V
TR). However, when a VTR is used, its uses are limited because it uses video captured by a camera, and it is difficult for the user to create the video himself.

On the other hand, when using a personal computer as described above, the user inputs the necessary data and inputs various graphs, characters, or figures using a scanner that are formed by processing the data. It becomes possible to do it easily. Therefore, unlike traditional VTRs, we are not limited to just producing images that focus on the image of the product.
It becomes possible to create materials based on various data. This allows salespeople in fields such as finance and insurance to use it as a new presentation tool in place of traditional catalogs.

FIG. 2 shows an external view of one embodiment with the flat display device removed.

As in this embodiment, only the flat display device is removed from the personal computer after the materials (figures and characters) to be displayed by the laptop personal computer as described above are created. The device can then be removed and carried to a business meeting to display various materials based on the latest information that is not possible with traditional printed catalogs, making it easy to explain intangible products such as finance and insurance. However, it can be of great help.

Since the flat display device of this embodiment is removed from the rough-button-type personal computer, it can be made much thinner and lighter than when a conventional laptop-type personal computer is used to describe a similar product. This makes it easy to carry.

In this embodiment, a card-shaped optical disk is used as the built-in memory device. Therefore, by exchanging the cards, it is possible to easily display a plurality of types of graphics.

FIG. 3 shows a block diagram of an embodiment of a flat display device according to the present invention.

In this embodiment, a color LCD (liquid crystal) panel is used as a flat display device, and a transparent touch panel as an input means is provided on the surface of the panel. That is, by using the touch panel, display operations such as page designation and scrolling are input. I
NF is an interface circuit, and has an interface with a touch panel as described above and a microprocessor MPU. This interface circuit INF
Data can be exchanged between a memory device such as a memory card and the microprocessor MPU via the microprocessor MPU. Also,
The flat display device is a microprocessor MPU
In the state connected to the above interface circuit IN
Display operation instructions are issued from the microprocessor MPU via F. Further, the power supply includes a display control circuit as described above, and when connected to the microprocessor MPU, although not particularly limited, the power supply from the microprocessor MPU performs the display operation and the operation of the memory device. When disconnected, the built-in battery or power supply circuit is disconnected from external commercial power.
The display operation is performed by supplying (2).

As described above, since the flat display device of this embodiment has a built-in power supply and memory device, even when it is disconnected from the microprocessor MPU (offline), it can independently record data in the memory device (memory card) in advance. It is possible to perform display operations based on the displayed display data. Since a touch panel is used as an input means for instructing the display operation, there is no restriction on mounting space unlike when using human power, and miniaturization is possible, and there are no restrictions on design. Note that instead of the touch panel as described above, input may be performed using a light pen or a mouse.

In addition, in the explanation so far, the memory device is capable of both writing and reading, but it is also possible to make the memory device read-only and write display data and display procedures to the memory medium by a separate processor. It is. In this case, a more compact flat display device with a simpler memory device can be realized.

FIG. 4 shows a conceptual diagram of an embodiment in which the flat display device according to the present invention is used as an overhead projector.

When a transmissive liquid crystal display device is used as the flat display device, its bank light unit is made removable. With the bank light unit removed in this manner, the liquid crystal display panel can be mounted on the overhead projector, and the displayed characters and figures can be enlarged and displayed on the screen. Even in this case, as mentioned above, the power supply is built-in, and the image data and procedures to be displayed are stored in the memory device. This makes it possible to display

In this embodiment, an overhead projector
In addition to being easy to configure since there is no need to provide a dedicated liquid crystal display panel or its control device, the above liquid crystal display panel can be installed using an existing overhead projector that uses a transparent sheet with figures and characters drawn on it. It is also possible to display the shapes used. This makes it possible to improve the display function and make effective use of equipment.

The effects obtained from the above examples are as follows. That is, Tl) By incorporating a power supply device and a memory device into a flat display device, the flat display device can independently perform a display operation according to display data stored in the memory device.

As a result, it is possible to obtain a thin and lightweight disc-to-knob type presentation tool.

(2) By using a removable card-like memory medium as the memory device, the flat display device can be made thin and lightweight, and various display operations can be performed by replacing the card.

(3) By using an optical disk housed in a card-shaped protective case as a card-shaped memory medium, it is possible to secure a large storage capacity with a small size, which has the effect of enabling various display operations. can get.

(4) Display data can be easily created by removably connecting a flat display device to the processor main body, and writing display data and its display procedure to the memory device while connected to the processor main body. The effect is that it is versatile and can be carried.

(5) By attaching a touch panel to the surface of a flat display device and using the touch panel as an input means, it is possible to achieve the effect of eliminating design constraints while achieving miniaturization.

(6) By using a transmissive liquid crystal display panel and making its backlight unit removable, it is possible to achieve the effect of enabling display operation using an overhead projector.

(7) By making the memory device read-only, it is possible to realize a more compact flat display device.

Although the invention made by the present inventor has been specifically explained above based on Examples, it goes without saying that the present invention is not limited to the above-mentioned Examples, and can be modified in various ways without departing from the gist thereof. Nor. For example, the flat display device may be one using a liquid crystal display panel as in the above embodiment, or any device that can be constructed thinly, such as a plasma display panel or an electroluminescent display panel. As a memory device,
In addition to those using optical disks as mentioned above, semiconductor RAM
A memory cart with a built-in chip, a small magnetic disk card, or the like may be used.

There are various types of batteries built into flat display devices, such as dry batteries, rechargeable storage batteries, stabilized power supply circuits that form DC voltage using commercial power sources, or those that use a combination of the above stabilized power supply circuits and batteries or storage batteries. It is possible to take the following embodiments.

In addition, flat display devices can be detachably attached to laptop-type personal computers, or can be electrically connected to workstations and various personal computers to perform the above-mentioned display operations and to transfer image data for display operations. It may also be possible to perform input. In this case, each workstation or various personal computers may have a built-in dedicated display device, or the display device may be detachable as in the case of the knob-type personal computer in the above embodiment. It may be something that

This invention can be widely used as a flat display device.

〔Effect of the invention〕

A brief explanation of the effects obtained by typical inventions disclosed in this application is as follows. That is, by incorporating a power supply device and a memory device into a flat display device, it becomes possible to perform a certain display operation off-line according to display data stored in the memory device, and it can be used as a so-called tabletop presentation tool. By connecting the above-mentioned flat display device to the processor main body and using it as its display device, and writing display data and its display procedure to the above-mentioned memory device, the display data and its layout can be created by the user himself, making it highly versatile. You can get a tabletop presentation tool with great functionality. By using a transmissive liquid crystal panel, display using an overhead projector with a simple configuration is also possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic external perspective view showing an embodiment of a laptop-type personal computer using a flat display device according to the present invention, and FIG. 2 is an external appearance showing an embodiment with the flat display device removed. 3 is a block diagram showing an embodiment of the flat display device according to the present invention, and FIG. 4 is a block diagram showing an embodiment of the flat display device according to the present invention used in an Oha Hesodo projector. FIG. 5 is a conceptual diagram showing an information processing device incorporating an optical disk memory device used in the present invention, and FIG. 6 is a plan view showing an embodiment of an optical disk as a memory medium thereof. FIG. INF: Interface circuit, MPU: Microprocessor. Figure Figure Figure 3 Foot Ice Brake ■ (Removable type) % type %

Claims (1)

[Scope of Claims] 1. A flat display device characterized by having a built-in memory device and capable of performing display operations independently according to display data stored in the memory device. 2. The flat display device according to claim 1, wherein the memory device is one in which a card-shaped memory medium is removable. 3. The flat display device according to claim 2, wherein the card-shaped memory medium is formed by incorporating an optical disk inside a card-shaped protective case. 4. Claims characterized in that the flat display device is removably connected to the processor main body, and display data and its display procedure are written in the memory device while connected to the processor main body. 3. The flat display device according to claim 1, 2, or 3. 5. The above-mentioned flat display device has a selection/changeover switch such as a touch panel attached to its surface, and by using the selection/changeover switch such as a touch panel as an input means, it can independently select from a plurality of types according to the above-mentioned stored display data. 5. A flat display device according to claim 1, wherein the display operation is controlled as follows. 6. Claims 1, 2, and 3, characterized in that the flat display device is made of a liquid crystal display panel and can be used for display operation by an overhead projector. , the flat display device according to item 4 or 5. 7. The flat display device according to claim 1, 2, 3, 5, or 6, wherein the memory device is read-only.