KR200244380Y1 - Tablet - Google Patents

Abstract

The present invention relates to a tablet device. The tablet device of the present invention includes a tablet having an effective writing area and an invalid writing area, an electronic pen having a sensing sensor, and a tablet capable of inputting information as the electronic pen contacts the writing effective area of the tablet. An apparatus comprising: writing effective area displaying means capable of displaying a writing effective area, wherein the writing effective area displaying means guides a light source and light of the light source to indicate a boundary between the writing valid area and the writing invalid area; In particular, the light source is a light emitting diode, the light emitting unit is a light guide for transmitting the light of the light emitting diode and the light transmitted from the light guide to the projection of each of the writing effective area projection It is characterized by consisting of a plate. According to the present invention, a light emitting diode and a light emitting portion for transmitting light of the light emitting diode to a boundary between the writing effective region and the writing invalid region are provided so that the writing valid region and the writing invalid region can be clearly distinguished. It has the effect of preventing the interruption of information input due to the input work in the invalid writing area.

Description

Tablet devices {TABLET}

The present invention relates to a tablet device used for inputting precise location information by connecting to a personal computer or CAD system.

Recently, if a user sketches various shapes as if a user writes or draws a picture without a keyboard or a mouse, a tablet device capable of displaying letters, symbols, or pictures having the same shape as input by a keyboard has been developed and used. Such a tablet device includes a tablet having a substrate and an electronic pen having a sensing sensor. The tablet device includes an arbitrary character on an electric field generating unit (hereinafter, referred to as a writing effective area) of the substrate using the electronic pen. By freely expressing symbols, pictures, etc., the relevant information can be entered.

However, such a graphic tablet has the advantage of being able to enter the information comfortably and freely, but it has been pointed out that the movement of the electronic pen can only be grasped indirectly through the monitor. That is, since the electronic pen for graphic tablets does not have a nib from which ink is leaked, even if the information to be entered in the writing effective area on the tablet is written, the information is only displayed on the monitor by a signal transmitted from the tablet substrate. No trace will appear.

Meanwhile, in order to solve such a problem, various tablet devices having writing means have recently been proposed. As an example, a pen nib having ink and a nib is installed in the electronic pen, and a recognition switch that is pressed by the pen nib to recognize an information input state is installed at the rear of the nib. A large number of tablet devices having a position sensor for detecting the coordinate position by detecting the position have been proposed.

With this configuration, first, the paper is placed on the writing effective area on the tablet, and then, when the user writes or sketches on the writing effective area as if the user holds the electronic pen and uses a writing instrument, the pen nib is pushed backward and recognized. When the switch is turned on and an electric field is generated on the tablet substrate as the recognition switch is turned on, the position sensor of the electronic pen detects the electric field of the substrate that changes according to the movement of the pen tip and inputs it to the computer. The information entered in is displayed. At this time, the nib protruding from the electronic pen is in contact with the writing paper of the writing effective area and leaks ink so that the input information is displayed on the paper as it is.

However, such a conventional tablet device puts a writing paper larger than the writing effective area on the tablet and inputs the corresponding information. In other words, an area other than the writing effective area (hereinafter referred to as a writing invalid area) If you are working on a computer, the input of information may be interrupted.

That is, the tablet device receives the corresponding information as the electronic pen contacts the electric field generating unit of the substrate, that is, the writing effective area. However, when a paper larger and wider than the writing effective area is placed on the tablet, the boundary between the writing effective area and the writing invalid area is not clearly distinguished. Accordingly, when the electronic pen is brought into contact with the writing invalid area by a user's error, the corresponding information is not input in the process of inputting information by placing a paper larger and wider than the writing effective area on the tablet.

Therefore, the present invention has been devised to solve such a conventional problem, and its purpose is to distinguish between the writing effective area and the writing invalid area on a tablet so that the writing invalid area and the electronic pen are in contact with each other. It is to provide a tablet device that can prevent interruption in advance.

1 is a perspective view showing the configuration of a tablet device according to the present invention,

2 is a cross-sectional view taken along line II of FIG. 1;

3 is an exploded perspective view showing in detail the configuration of the writing effective area display means of the present invention;

4 is a perspective view showing an example of use of the present invention,

5 is a perspective view showing another embodiment of the writing effective area display means of the present invention;

FIG. 6 is a cross-sectional view taken along the line II-II of FIG. 5.

♣ Explanation of symbols for the main parts of the drawing ♣

10: case 12: substrate

20: light source 30: light emitting part

32: light guide 34: floodlight

40: light guide 46: light emitting arm

A: writing valid area B: writing invalid area

J: Paper P: Electronic Pen

In order to achieve the above object, the present invention includes a tablet having an effective writing area and an invalid writing area, and an electronic pen having a sensing sensor, and inputs information by contacting the electronic pen with the writing effective area of the tablet. A tablet device capable of making a tablet comprising: a writing valid area displaying means capable of displaying a writing valid area, wherein the writing valid area displaying means comprises a light source and a writing valid area and a writing invalid area by guiding light from the light source; It characterized in that it comprises a light emitting unit for indicating that the boundary.

Preferably, the light source is a light emitting diode, and the light emitting unit comprises a light guide for transmitting the light of the light emitting diode and a light transmitting plate for transmitting the light transmitted from the light guide to each corner of the writing effective area. do.

Hereinafter, a preferred embodiment of a tablet device according to the present invention will be described in detail with reference to the accompanying drawings.

First, referring to FIG. 1, the configuration of the tablet device will be briefly described. The tablet device has a case 10, and a substrate 12 is installed inside the case 10. An electric field generating unit 12a for generating an electric field is formed on the upper surface of the substrate 12. Here, the upper portion of the electric field generating portion 12a immediately becomes the writing effective area A of the upper surface of the case 10. The electric field of the substrate 12 is brought into contact with the writing pen effective area A by the electronic pen P. The generator 12a generates an electric field. Here, the area other than the writing effective area A becomes the writing invalid area B as a matter of course.

On the other hand, the tablet device of the present invention has a writing effective area display means to display the writing effective area (A). The writing effective area displaying means is provided at each corner of the substantially rectangular writing valid area A, and the writing valid area displaying means is provided with a light source 20 provided in the substrate 12 as shown in Figs. And a light emitting part 30 which guides the light of the light source 20 to indicate that it is an edge of the writing effective area A. In particular, the light emitting unit 30 includes a light guide 32 for transmitting the light of the light source 20 to a predetermined position, and a writing effective area A of the upper surface of the case 10 for transmitting the light transmitted from the light guide 32. It consists of a light-transmitting plate 34 to emit light.

The light source 20 includes a light emitting diode (LED), which emits light forward. The light emitting diode 20 may be any one of a red light emitting diode (red LED), a green light emitting diode (green LED), a blue light emitting diode (blue LED), a white light emitting diode (white LED), and the like.

The light guide 32 is an optical waveguide block having an entrance surface 32a, a reflection surface 32b, and an exit surface 32c, and is disposed on the bottom surface of the substrate 12 so as to be disposed in front of the light source 20. Is installed on. Here, the incident surface 32a of the light guide 32 is configured to have a large area to allow more light from the light source 20 to be incident thereon. For this purpose, the light guide 32 includes a light emitting diode 20 as a light source. An accommodating groove 32d is formed which can be accommodated. As a result, all of the sidewall surfaces of the receiving grooves 32d become the incident surface 32a, so that more light from the light emitting diode 20 is incident on the incident surface 32a. The reflective surface 32b of the light guide 32 refracts and reflects light of the incident light emitting diodes 20 and is formed at a 45 ° angle so as to reflect the incident light at approximately right angles. In addition, the emission surface 32c of the light guide 32 is configured to emit the light reflected by the reflective surface 32b to the upper surface of the substrate 12, for this purpose the emission surface 32c of the light guide 32 Is configured to protrude from the upper surface, and the projected exit surface 32c is configured to be exposed to the upper surface of the substrate 12 through the through hole 12b formed in the substrate 12. On the other hand, the emission surface 32c of the light guide 32 is formed in a triangle so as to match the shape of the floodlight plate 34 to be described later, as shown in FIG.

The light guide 32 collects the light of the light emitting diode 20 and transmits the light into the electromagnetic field generating portion 12a of the substrate 12, that is, into the writing effective area A. In particular, the light guide 32 guides the light of the light emitting diode 20 into the electromagnetic field generating portion 12a while having a minimum occupying area, thereby bringing the light emitting diode 20 that requires a large installation area onto the substrate 12. Do not need to install. In other words, when the light emitting diodes 20 are installed in the electromagnetic field generating portion 12a of the substrate 12, they occupy much of the electromagnetic field generating portion 12a, thereby relatively sensing by the electronic pen P. The sensing area is reduced. Therefore, the light emitting diode 20 is provided outside the electromagnetic field generating portion 12a, and the light of the light emitting diode 20 is guided into the electromagnetic field generating portion 12a using the light guide 32 having a relatively small occupying area. By constructing, the writing effective area A is not reduced.

Here, the optical guide 32 is fixedly attached to the bottom surface of the substrate 12 as described above, for this purpose, a plurality of protrusions 32e are formed on the upper surface of the optical guide 32, the substrate 12 Coupling holes 12c into which the protrusions 32e of the light guide 32 are fitted are formed. Therefore, the projections 32e of the optical guide 32 are inserted into the coupling holes 12c of the substrate 12, and the projections 32e protruding to the upper surface of the substrate 12 are thermally fused to form the substrate ( 12, the optical guide 32 is provided.

Meanwhile, as illustrated in FIG. 2, the floodlight plate 34 emits light emitted from the exit surface 32c of the light guide 32 to the upper surface of the case 10, in particular, the writing effective area A and the writing invalid area ( It is provided in the installation hole 14 formed in each corner of the writing effective area | region A of the case 10, as shown in FIG. 1 and FIG. Here, the floodlight plate 34 is composed of a right triangle that forms a shape corresponding to the corner of the writing effective area A, that is, two sides at right angles, so that the rectangular writing effective area A can be clearly displayed. In addition, a top surface of the floodlight plate 34 is stippled so that light incident from the light guide 32 can be transmitted while diffusing to the upper portion of the case 10.

By such a configuration, even if a paper J larger and wider than the writing effective area A is placed on the tablet as shown in FIG. 4, the writing valid area A is clearly displayed by the writing valid area displaying means as described above. As a result, the user can accurately recognize whether the current work area is the writing valid area A or the writing invalid area B in the process of inputting the corresponding information using the electronic pen P. FIG.

Next, Fig. 5 and Fig. 6 show another embodiment of the writing effective area display means. The writing effective area display means of another embodiment has a structure in which the light emitting part 30 of the display means is provided in the writing invalid area B, unlike the above-described embodiment. In particular, the writing effective area display means of another embodiment can be seen that the light guide 40 is directly installed on the upper surface of the case 10 without a separate floodlight plate as shown in FIG. This is because, unlike the above-described embodiment, since the light emitting unit 30 is installed in the writing invalid area B, it is not necessary to transmit the light of the light source 20 to the writing effective area A, and thus, without a separate floodlight plate. The light guide 32 is directly installed on the case 10 so that the light of the light source 20 is directly transmitted to the upper portion of the case 10.

Meanwhile, in another embodiment, the light emitting diode 20 protrudes to the top of the substrate 12 through the through hole 12b of the substrate 12 as shown in FIG. 6, and the light guide 40 is formed of the light emitting diode 20. It is installed in the vertical upper part of), and has an entrance face 42 and an exit face 44. In particular, the light guide 40 has a light emitting arm 46 extending long from one side, the upper surface of the light emitting arm 46 is a light emitting surface 44. As shown in FIG. 5, the light guide 32 extends the light emitting arm 46 along both the upper and lower surfaces of the writing effective area A along the left and right sides of the writing effective area A. Is installed. The light guide 32 installed in this way transmits the light of the light emitting diode 20 to the upper portion of the case 10, in particular, the writing invalid area B. On the other hand, the light incident on the light guide 32 is emitted while being transmitted along the light emitting arm 46, the light emitted is gradually weakened toward the end of the light emitting arm 46, and thus the effective writing area The boundary between (A) and the writing invalid area (B) is bright and gradually becomes darker thereafter. In this way, the boundary between the writing effective area A and the writing invalid area B is bright, and the light guide 32 which emits light gradually thereafter clearly displays the writing effective area A without irritating the user's eyes. This makes it visually good.

In another embodiment, minute unevenness (Wave) 42a is formed on the incident surface 42 of the light guide 40, and the minute unevenness 42a scatters the light of the light emitting diode 20 that is incident. Of course, the scattered light is transmitted to the end of the light emitting arm 46 to improve the transmission efficiency.

The writing effective area display means of another embodiment configured as described above causes the light to be emitted from the writing invalid area B, thereby displaying the boundary between the writing valid area A and the writing invalid area B. FIG. In particular, the writing effective area display means of another embodiment can be displayed in the writing invalid area B, thereby indicating that it is the writing valid area A without reducing the area of the writing effective area A, and thus the above embodiment. Unlike, it has a wide sensing area.

In the above described a preferred embodiment of the present invention by way of example, the scope of the present invention is not limited only to this specific embodiment, it can be appropriately changed within the scope described in the utility model registration claims.

As described above, the tablet device according to the present invention includes a light emitting diode and a light emitting part that transmits light of the light emitting diode to a boundary between the writing effective region and the writing invalid region, thereby clearly distinguishing the writing valid region and the writing invalid region. In this way, it is possible to prevent interruption of information input due to input work in the invalid writing area.

Claims (4)

A tablet device comprising a tablet having an effective writing area and an invalid writing area, and an electronic pen having a sensing sensor, the tablet device capable of inputting information as the electronic pen contacts the writing effective area of the tablet. And a writing effective area displaying means capable of displaying a writing valid area, wherein the writing effective area displaying means includes a light source and a light emitting unit for guiding the light of the light source to indicate a boundary between the writing valid area and the writing invalid area. Tablet device, characterized in that. The light source of claim 1, wherein the light source is a light emitting diode, and the light emitting part comprises a light guide for transmitting the light of the light emitting diode and a light transmitting plate for transmitting the light transmitted from the light guide to each corner of the writing effective area. A tablet device. The tablet device according to claim 1, wherein the light source is a light emitting diode, and the light emitting portion is a light guide that transmits light of the light emitting diode and emits light around each corner of a writing effective area. The tablet device according to claim 3, wherein the light guide has a light emitting arm extending from one side, and the light guide arm extends from a boundary between a writing valid area and a writing invalid area to both sides of the writing invalid area.