JPH0628091A - Digitizer sensor plate - Google Patents

Abstract

PURPOSE:To enable the same digitizer plate to use as a transparent type and a translucent type by sticking a liquid crystal dimming sheet whose transprency is changed from a translucent state to a transparent state by impressed voltage to a transparent hard plate and changing voltage to be impressed as required. CONSTITUTION:A liquid crystal dimming sheet 17A whose transparency is changed from a translucent state to a transparent state when impressed voltage is multiplied is arranged between a transparent hard plate 2A and an orthogonal intersecting laid net 4 of insulating sensor line 3 to constitute a digitizer sensor plate 1. When voltage is impressed from lead wires 8A, 8B to the sheet 17A and voltage is adjusted, the transparency of the sheet 17A can be optionally set up from the translucent state to the transparent state. Therefore, for example, in the case of previous design arrangement with a remote place, a display image displayed on a back projection type translucent type digitizer sensor plate can be directly corrected, or while directly inputting a solid shape or the like, a transparent type digitizer sensor plate can be used for the formation of a drawing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic induction type digitizer sensor plate used for a graphic information input device such as CAD, and more particularly to a transparent digitizer sensor plate and a semitransparent digitizer sensor plate for rear projection. The present invention relates to a digitizer sensor plate provided on the same sensor plate.

[0002]

2. Description of the Related Art Recently, as a graphic information input device for drawings and the like, as shown in FIG. 7, a sensor wire laying network 4 formed by orthogonally laying insulated sensor wires 3 and 3 made of ultrafine magnet wires or the like. Transparent hard plate 2 for digitizing input work
An electromagnetic induction type transparent digitizer sensor plate 1 which is sandwiched and fixed via a transparent adhesive 5 between A and a sensor wire protecting transparent hard flat plate 2B is often used. For example, as shown in FIG. 8, the transparent digitizer sensor plate 1 is a drawing in which the shape or structure of a three-dimensional object is directly input on the transparent digitizer sensor plate 1 by using a coordinate position detecting laser cursor 7. It has a function that can create.

On the other hand, as shown in FIG. 9, an image display screen 2 in the form of a semi-transparent sheet such as a thin cloth or resin is provided on one side of the transparent hard flat plate 2A for digitizing input work.
3 is attached to form the digitizing input work surface 24,
A semi-transparent digitizer sensor plate 1A in which insulated sensor wires 3 and 3 such as ultra-fine magnet wires are orthogonally wired on the opposite side of the transparent hard flat plate 2A and fixed with an adhesive 5A is used for projection in a meeting meeting by a large number of people. It is widely used as a digitizer sensor plate. The translucent digitizer sensor plate 1A provided with the image display screen 23 is displayed on the image display screen 23 of the digitizing input work flat plate 2A by the liquid crystal projector 8 as shown in FIG. When a correction, change or the like occurs in the projected display image 9 by enlarging and projecting, the conference participant directly inputs the correction, change or the like from the screen surface 23 to the digitizer sensor plate 1A using the electromagnetic pen 10 or the like. It has a function that allows Ising input.

[0004]

The conventional transparent digitizer sensor plate and the semi-transparent digitizer sensor plate described above are excellent in their respective functions, but the transparent digitizer sensor plate and the semi-transparent digitizer for projection are used. It was difficult to provide both functions as a sensor plate. Therefore,
Depending on the application, it is necessary to prepare two types of sensor plates, a transparent digitizer sensor plate and a semi-transparent digitizer sensor plate for projection, which is uneconomical.

An object of the present invention is to solve the above problems and provide a digitizer sensor plate having both functions of a transparent digitizer sensor plate and a translucent digitizer sensor plate.

[0006]

A liquid crystal light control sheet is arranged between a transparent hard plate and an orthogonal wiring network of insulated sensor wires, the transparency of which changes from a semi-transparent state to a transparent state when an applied voltage is gradually increased. Then, by changing the voltage applied to the liquid crystal light control sheet, the digitizer sensor plate is constituted so as to function as a digitizer sensor plate from a translucent type to a transparent type.
Further, the liquid crystal light control sheet and the insulation sensor wire orthogonal wiring network may be provided via a second transparent hard plate. Also,
On the insulation sensor wire orthogonal wiring network, a third wire for protecting the sensor wire is provided.
The transparent hard plate may be provided.

[0007]

[Function] By applying a liquid crystal light control sheet whose transparency changes from a semitransparent state to a transparent state according to an applied voltage to a transparent hard plate and changing the voltage applied to the liquid crystal light control sheet as necessary, the same digitizer The sensor plate can be made to function as a transparent digitizer sensor plate or a semitransparent digitizer sensor plate for rear projection.

[0008]

The present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of an essential part showing the structure of a digitizer sensor plate of the present invention,
FIG. 2 is a perspective view of the digitizer sensor plate of the present invention, and FIG. 3 is an explanatory diagram of a manufacturing process of the digitizer sensor plate of the present invention.

An example of manufacturing the digitizer sensor plate of the present invention will be described below. In the case of the digitizer sensor plate of the present invention, the wiring of the sensor wire is the invention of the present inventor (Japanese Patent Application No. 4-1465).
The method according to No. 37) is desirable in terms of efficiency. That is, FIG.
As shown in FIG. 3, a flat portion 11 is provided on the top, a cut portion 12 is provided at the lower portion of the flat portion 11, and an inclined surface 13 is provided on one side, and a plurality of sensor wire arranging pins 1 are provided on the inclined surface 13.
The pin bases 15 for arranging the sensor wires, in which 4 are established at predetermined intervals, are arranged in a square shape on the pin base fixing base 16 with the inclined surface 13 facing outward, and the sensors of the pin bases 15 arranged in opposition to each other. An insulated sensor wire 3 made of, for example, an ultrafine polyurethane enamel wire having a wire diameter of 0.15 mm is folded back and orthogonally wired between the wire-wiring pins 14 to form a sensor-wiring net 4.

On the other hand, the liquid crystal light control sheet 17A is shown in FIG.
As shown in FIG. 2, the transparent conductive film 6 is formed on both surfaces of the liquid crystal film 17.
A, 6B and transparent insulating sheets 7A, 7B are sequentially laminated to form an extremely flexible one having a thickness of, for example, about 0.3 mm. The transparent conductive films 6A and 6B are, for example, indium-tin oxide (ITO) sputtering films, and the transparent insulating sheets 7A and 7B are polyester sheets. The transparent conductive film 6 of this liquid crystal light control sheet 17A
A and 6B are lead wires 8 for applying a voltage to the liquid crystal film 17.
A and 8B are connected. As shown in FIG. 3A, the liquid crystal light control sheet 17A having such a structure is attached by a transparent adhesive on the surface of the transparent glass plate 2A for digitizing input work opposite to the surface 24 for digitizing input work.

The transparent glass plate 2A to which the liquid crystal light control sheet 17A is attached is fixed to the flat portion 11 of the pin base 15 with the transparent adhesive 5 with the liquid crystal light control sheet 17A surface facing down, and then the pin The digitizer sensor plate 1 of the present invention can be obtained by removing it from the base fixing base 16.

Liquid crystal film 1 of the obtained digitizer sensor plate 1
When an AC voltage is applied to the lead wires 8A and 8B, the liquid crystal film 17 remains a semitransparent film when the applied voltage is 0V, and changes to a transparent film when the applied voltage is gradually increased to 100V.
By adjusting the applied AC voltage from 0 V to 100 V, the transparency of the liquid crystal film 17 can be arbitrarily set from a semitransparent state to a transparent state. Therefore, the digitizer sensor plate 1 can be made to function as a semi-transparent digitizer sensor plate when no voltage is applied to the liquid crystal film 17.
When AC100V is applied to the liquid crystal film 17, the digitizer sensor plate 1 can function as a transparent digitizer sensor plate.

The use examples of the digitizer sensor plate 1 thus obtained will be described below. An example of application as a semi-transparent digitizer sensor plate is a semi-transparent digitizer sensor plate 1 for rear projection, which is used for meetings such as design and drawings with remote locations. As shown in FIG. 4, a display image such as a photograph or a figure transmitted from a distant side is projected by a liquid crystal projector 8 on a liquid crystal light control sheet 17A which is a semitransparent sheet. The operator can easily correct the image by performing the necessary digitizing input work with the electromagnetic pen 10 on the digitizing input work surface 24 while looking at the display image 18 displayed on the digitizer sensor plate 1. it can.

Next, FIG. 5 shows an application example in which the transparent digitizer sensor plate 1 is made to function. This is for digitizing the structure and dimensions directly from the actual product 28.
The object 28 placed on the opposite side of the work surface 24 of the transparent sensor plate 1 is directly viewed on the work surface 24 of the digitizer sensor plate 1 using the coordinate position detecting laser cursor 7 while seeing a perspective image from the work surface 24 side of the transparent sensor plate 1. Enter digitizing.

In this way, the information digitized and input in sequence is finally processed by the computer C and displayed as the display image 18 on the image display device 30 side. If this is drawn on the plotter and the dimensions are entered, a new sheet is created. A comparative drawing of is easily created. Therefore, by preparing a digitizer sensor plate and an image display device on the other side as well, it is possible to input / display each other's designs and drawings at the same time and confirm each other to make more effective meetings for design modification and changes. Can be done.

Thus, the digitizer sensor plate 1 of the present invention
Can function as a semi-transparent digitizer sensor plate for rear projection and also as a transparent digitizer sensor plate.

FIG. 6 shows another embodiment of the present invention.
Liquid crystal light control sheet 17A with two transparent glass plates 2A and 2B
It is bonded and fixed with a transparent adhesive between the two, and an orthogonal wiring network of the insulated sensor wires 3 is provided on the surface of the transparent glass plate 2B.

Further, a transparent glass plate 2C for protecting the sensor line is provided if necessary. In this case, the transparent glass plate 2
C is the flat portion 11 of the pin base from the side of the cut portion 12 of the pin base 15.
It is pressed against the lower side and fixed to the pin base 15 by the transparent adhesive 5.

[0019]

According to the digitizer sensor plate of the present invention, one sensor plate can very easily be made to function as a transparent digitizer sensor plate and a semi-transparent digitizer sensor plate for rear projection. As a result, the sensor plate required for each conventional application can be completed with one sheet, so that the economical effect is extremely large.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of a digitizer sensor plate of the present invention.

FIG. 2 is a perspective view of a digitizer sensor plate of the present invention.

FIG. 3 is an explanatory view of a manufacturing process of the digitizer sensor plate of the present invention.

FIG. 4 is an explanatory diagram in which the digitizer sensor plate of the present invention is used for rear projection.

FIG. 5 is an explanatory diagram in which the digitizer sensor plate of the present invention is used as a rear projection and a transparent digitizer sensor plate.

FIG. 6 is an explanatory diagram showing another embodiment of the present invention.

FIG. 7 is a perspective view showing a configuration of a conventional transparent digitizer sensor plate.

FIG. 8 is an explanatory diagram showing a digitizing input by a conventional transparent digitizer sensor plate.

FIG. 9 is a perspective view showing the configuration of a conventional projection digitizer sensor plate.

FIG. 10 is an explanatory diagram showing an example of use of a conventional projection digitizer sensor plate.

[Explanation of reference signs] 1,1A Digitizer sensor plate 2A, 2B, 2C Transparent glass plate 24 Digitizing input work surface 3 Insulation sensor wire 4 Sensor wire wiring network 5 Transparent adhesive 6A, 6B Transparent conductive film 7A, 7B Transparent insulation Sheet 8A, 8B Lead wire 17 Liquid crystal film 17A Liquid crystal light control sheet

Claims (3)

[Claims] 1. A liquid crystal light control sheet is provided between a transparent hard plate and an orthogonal wiring network of insulated sensor wires, the transparency of which changes from a semitransparent state to a transparent state when the applied voltage is gradually increased. A digitizer sensor plate configured to function as a digitizer sensor plate of a translucent type to a transparent type by changing an applied voltage to the liquid crystal light control sheet. 2. The digitizer sensor plate according to claim 1, wherein the liquid crystal light control sheet and the insulating sensor wire orthogonal wiring network are arranged via a second transparent hard plate. 3. The digitizer sensor plate according to claim 1, wherein a third transparent hard plate for protecting the sensor line is provided on the insulating sensor line orthogonal wiring network.