KR101144847B1 - Handwritting input device and method for manufacturing the same - Google Patents

Abstract

An input device is disclosed. The input device includes a PCB including a first connection terminal connected to a first conductor and a second connection terminal connected to a second conductor, and formed on an upper portion of the PCB to connect the first connection terminal and the second connection terminal. A conductor thin film for electrically connecting, the conductor thin film comprising a plurality of post-cut lines.

Description

Handwriting input device and method for manufacturing the same

Embodiments of the inventive concept relate to a handwriting input device, and more particularly, to a handwriting input device including a plurality of unit input cells each including a plurality of post-cut lines and a manufacturing method thereof.

Recently, as a technology for recognizing a user's handwriting input and processing it as a digital signal has emerged, interface technologies for recognizing the handwriting input have been developed.

Methods of recognizing a user's handwriting input include an electromagnetic sensor board method, a camera sensor method, an electromagnetic signal recognition method, and a conductive panel method.

The methods described above may be performed by a user using a dedicated pen or a dedicated panel, for example, inputting letters, symbols, or pictures and recognizing the inputted user writing, or by placing the user on a paper on a conventional input device and writing on the paper. It was a method of inputting and recognizing the input user's handwriting. Such user writing requires an expensive dedicated pen or dedicated panel and does not leave offline data.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a writing input device having a new structure and a method for manufacturing the same, which solve the above-described problems and facilitate the destruction of the conductive thin film when a user writes a user.

According to an embodiment of the present invention, a writing input device includes a PCB including a first connection terminal connected to a first conductor and a second connection terminal connected to a second conductor, and formed on an upper portion of the PCB. And a conductive thin film for electrically connecting the second connecting terminal, wherein the conductive thin film is cut by the conductor thin film according to a user's input so that the first connecting terminal and the second connecting terminal are electrically separated from each other. And a plurality of post-cut lines to make it possible.

The writing input device further includes a planarization layer formed between the PCB and the conductive thin film and formed between a portion of the first connection terminal and a portion of the second connection terminal exposed on the PCB. The writing input device is an electronic note paper.

The writing input device may further include a signal supply circuit for supplying an operation signal to the first conductor formed in the PCB, and a signal sensing circuit for sensing a signal output from the second conductor formed in the PCB. Include.

The handwriting input device further includes a processor for controlling an operation of the input device, and a wireless interface for converting an output signal of the sensing circuit into a wireless signal and transmitting the wireless signal to a reader.

According to an embodiment of the present invention, a handwriting input device may include a plurality of voltage supply lines, a plurality of lead out lines, and a plurality of unit input cells formed between the plurality of voltage supply lines and the plurality of lead out lines. An input pad comprising; To decode row addresses, supply a first voltage to one voltage supply line selected from the plurality of voltage supply lines and supply a second voltage to the remaining voltage supply lines among the plurality of voltage supply lines according to the decoding result. A row decoder; And a read out circuit for decoding read out addresses and reading out signals of the plurality of read out lines according to the decoding result.

Each of the plurality of unit input cells includes a plurality of first connection terminals, each of which is connected to each of the plurality of voltage supply lines, and a plurality of second connection terminals, each of which is connected to each of the plurality of readout lines. And a conductive thin film formed on an upper portion of the PCB, the conductive thin film for electrically connecting the plurality of first connection terminals and the plurality of second connection terminals, wherein the conductive thin film is formed according to a user input. And a plurality of post-cut lines to cut the thin film so that the first connection terminal and the second connection terminal are electrically separated from each other.

Method of manufacturing a handwriting input device according to an embodiment of the present invention comprises the steps of forming a first conductor and a second conductor in the PCB; Connecting a first connection terminal to the first conductor and a second connection terminal to the second conductor; And electrically connecting a portion of the first connection terminal exposed on the PCB and a portion of the second connection terminal exposed on the PCB using a conductor thin film including a plurality of post-cut lines. The plurality of post-cut lines allow the conductor thin film to be cut according to a user's input so that the first connection terminal and the second connection terminal are electrically separated from each other.

The method for manufacturing a writing input device may include a planarizing material before electrically connecting a portion of the first connection terminal exposed on the PCB and a portion of the second connection terminal exposed on the PCB by using the conductive thin film. And flattening between the portion of the first connection terminal and the portion of the second connection terminal using the same.

The handwriting input device according to an embodiment of the present invention has an effect of more accurately detecting a user handwriting input by using a plurality of unit input cells, each of which includes a plurality of post-cut lines.

The detailed description of each drawing is provided in order to provide a thorough understanding of the drawings cited in the detailed description of the invention.
1 is a block diagram of an input device according to an exemplary embodiment of the present invention.
FIG. 2 illustrates an embodiment of a circuit diagram of a unit input cell illustrated in FIG. 1.
3 is a diagram illustrating another embodiment of a circuit diagram of a unit input cell illustrated in FIG. 1.
4 illustrates another embodiment of a circuit diagram of the unit input cell illustrated in FIG. 1.
5 is a sectional view taken along line II ′ of the unit input cell shown in FIG. 2.
6 illustrates an example of a user handwriting input using a unit input cell according to an exemplary embodiment of the present invention.
FIG. 7 shows a block diagram of a system including the input device shown in FIG. 1.

Specific structural and functional descriptions of embodiments according to the concepts of the present invention disclosed in this specification or application are merely illustrative for the purpose of illustrating embodiments in accordance with the concepts of the present invention, The examples may be embodied in various forms and should not be construed as limited to the embodiments set forth herein or in the application.

Embodiments in accordance with the concepts of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to specific forms of disclosure, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.

Terms such as first and / or second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another, for example, without departing from the scope of rights in accordance with the inventive concept, and the first component may be called a second component and similarly The second component may also be referred to as the first component.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between. Other expressions describing the relationship between components, such as "between" and "immediately between," or "neighboring to," and "directly neighboring to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is described, and that one or more other features or numbers are present. It should be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined herein. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an input device according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a handwriting input device 10 such as an electronic note paper or an E-notepad includes an input pad 20. The input pad 20 includes an array of a plurality of unit input cells 21, 21 including 21A of FIG. 2, 21B of FIG. 3, or 21C of FIG. 4. Each of the plurality of unit input cells 21 performs a function of a sensor or a detector capable of detecting a user's handwriting input input by a user, for example, a sign, a figure, a character, or a picture.

The input pad 20 may include a plurality of voltage supply lines WL1 ˜WLn, a plurality of lead out lines BL1 ˜BLm, a plurality of voltage supply lines WL1 ˜WLn, and a plurality of lead out lines ( It includes a plurality of unit input cells 21 connected between BL1 to BLm.

The plurality of voltage supply lines WL1 ˜WLn and the plurality of readout lines BL1 ˜BLm may be implemented in the PCB. In some embodiments, the plurality of voltage supply lines WL1 to WLn and the plurality of readout lines BL1 to BLm may be formed in the semiconductor substrate.

The input device 10 may further include a row decoder 30 and a readout circuit 60.

The row decoder 30, which functions as a signal or voltage supply circuit, decodes the row addresses X-ADD output from the controller 50, and among the plurality of voltage supply lines WL1 to WLn according to the decoding result. You can choose either.

For example, the row decoder 30 may supply a first voltage (eg, 3.3V) to one selected voltage supply line and a second voltage (eg, ground voltage) to a plurality of unselected voltage supply lines. .

For example, when the row decoder 30 supplies a first voltage to an i-th voltage supply line among the plurality of voltage supply lines WL1 to WLn, the row decoder 30 supplies a plurality of voltages except for the second voltage supply line. The second voltage may be supplied to the lines.

Each of the plurality of voltage supply lines WL1 to WLn may be sequentially selected by the row decoder 30.

According to an embodiment, the input device 10 may further include a voltage generator 40 for supplying a voltage to each of the plurality of voltage supply lines WL1 to WLn under the control of the controller 50. The row decoder 30 may supply the first voltage or the second voltage generated by the voltage generator 40 to each of the plurality of voltage supply lines WL1 to WLn according to the row addresses X-ADD.

The readout circuit 60, which performs a function as a signal sensing circuit, decodes the read addresses Y-ADD output from the controller 50 from each of the plurality of readout lines BL1 to BLm according to the decoding result. The output signals D1-Dm can be processed, for example amplified or analog-digital converted. For example, the readout circuit 60 receives signals output from the plurality of readout lines BL1 to BLm connected to the plurality of unit input cells connected to the selected voltage supply line according to the read addresses Y-ADD. It can be processed sequentially or simultaneously.

The readout circuit 60 may include a respective amplifier, for example, a sense amplifier, for amplifying each signal output from each readout line BL1 to BLm. In addition, the readout circuit 60 may further include a respective analog-digital circuit for converting each amplified signal output from the respective amplifier into a respective digital signal. According to an embodiment, the readout circuit 60 may include each analog-digital circuit for converting each signal output from each readout line BL1 to BLm into a respective digital signal.

FIG. 2 illustrates an embodiment of a circuit diagram of a unit input cell illustrated in FIG. 1.

Referring to FIG. 2, the unit input cell 21A includes a first connection terminal 22-1, for example, a first via, connected to a voltage supply line WLi (1 ≦ i ≦ n, where i and n are natural numbers). ), The second connection terminal 22-2 connected to the lead-out line BLj (1 ≦ j ≦ m, where j and m are natural numbers), for example, the second via, and the first via 22-1 And a conductor thin film 23 for electrically connecting the two vias 22-2.

The conductive thin film 23 may be broken or torn by a pen or a hand according to a user's handwriting input. As shown in FIG. 2, the conductor thin film 23 of the unit input cell 21A includes a plurality of post cut lines 23-1 implemented in a grid shape.

During user handwriting input, the conductor thin film 23 can be easily and reliably electrically separated from each connection terminal 22-1 and 22-2 by a plurality of post-cut lines 23-1.

When the first via 22-1 and the second via 22-2 are electrically connected to each other through the conductor thin film 23, the first signal supplied through the voltage supply line WLi, for example, the first voltage Alternatively, the second voltage may be output to the readout line BLj. In this case, it may be assumed that the unit input cell 21A represents data 1 or stored.

However, when the conductor thin film 23 is broken or torn and the first via 22-1 and the second via 22-2 are electrically separated from each other, the first signal supplied through the voltage supply line WLi is leaded. It cannot be output to the outline BLj. In this case, it may be assumed that the unit input cell 21A represents or stores data zero.

That is, the lead-out circuit 60 determines the user handwriting input represented by the unit input cell 21A, that is, the data and processes the determined data, for example, amplification or analog-digital, depending on whether the conductor thin film 23 is broken or torn. I can convert it.

3 is a diagram illustrating another embodiment of a circuit diagram of a unit input cell illustrated in FIG. 1.

Referring to FIG. 3, the unit input cell 21B further includes a blocking circuit 25 formed between the voltage supply line WLi and the first connection terminal 22-1.

The blocking circuit 25 receives a signal input through the lead-out line BLj, for example, a signal or noise inputted through the lead-out line BLj and the tear-resistant conductor thin film 23 after being output from another voltage supply line. It serves to block the influence on the voltage supply line WLi. For example, the blocking circuit 25 may be a diode or a diode connected transistor.

As shown in FIG. 3, the conductor thin film 23 of the unit input cell 21B includes a plurality of post cut lines 23-1. During user handwriting input, the conductor thin film 23 can be easily and reliably separated from each connection terminal 22-1 and 22-2 by a plurality of post-cut lines 23-1. Therefore, the readout circuit 60 can accurately read the user handwriting input.

4 illustrates another embodiment of a circuit diagram of the unit input cell illustrated in FIG. 1.

Referring to FIG. 4, the unit input cell 21C further includes a blocking circuit 27 formed between the lead-out line BLj and the second connection terminal 22-2.

The blocking circuit 27 prevents the signal of the lead-out line BLj, for example, the signal input through another voltage supply line or the influence of the voltage supply line WLi through the conductor thin film 23 from which the noise is not torn. Perform the function to For example, the blocking circuit 27 may be a diode or a diode connected transistor.

As shown in FIG. 4, the conductor thin film 23 of the unit input cell 21C includes a plurality of post cut lines 23-1. During user handwriting input, the conductor thin film 23 can be easily and reliably separated from each connection terminal 22-1 and 22-2 by a plurality of post-cut lines 23-1.

5 is a sectional view taken along line II ′ of the unit input cell shown in FIG. 2.

2 and 5, the voltage supply line 110 and the lead-out line 120 are formed inside the PCB 100 implemented with a plurality of layers. The voltage supply line 110 and the leadout line 120 may be formed in the same layer or different layers in the PCB 100. In this case, the voltage supply line 110 and the readout line 120 are insulated from each other.

The first connection terminal 22-1, for example the first via, is electrically connected to the voltage supply line 110, and the second connection terminal 22-2, for example, the second via is electrically connected to the lead-out line 120. Connected.

The conductive thin film 23 including the plurality of post-cut lines 23-1 may expose the exposed portion 22-3 and the second connection terminal of the first connection terminal 22-1 exposed on the PCB 100. The exposed part 22-4 of (22-2) can be electrically connected.

According to an embodiment, between the exposed portion 22-3 of the first connecting terminal 22-1 and the exposed portion 22-4 of the second connecting terminal 22-2 exposed on the upper portion of the PCB 100. The planarization layer 130 may be further formed therein. At this time, since each exposed portion 22-3 and 22-4 should be electrically connected to each other through the conductor thin film 23, the planarization layer 130 is a PCB except for each exposed portion 22-3 and 22-4. It is formed on top 100. In this case, the height of the planarization layer 130 may be formed to be equal to or slightly lower than the height of each of the exposed portions 22-3 and 22-4. The planarization layer 130 may be implemented with an insulating material or a coating material.

According to an embodiment, after the planarization layer 130 is formed on the PCB 100, the first connection terminal 22-1 and the voltage supply line 110 are electrically connected, and the second connection terminal 22-2 is formed. ) And the lead-out line 120 may be electrically connected. In this case, each exposed portion 22-3 and 22-4 of each connection terminal 22-1 and 22-2 may be flattened by the planarization layer 130 as shown in FIG. 5. And the conductor thin film 23 is electrically connected to each exposed part 22-3 and 22-4.

6 illustrates an example of a user handwriting input using a unit input cell according to an exemplary embodiment of the present invention. 2 to 6, the conductive thin film 23 includes a plurality of post cut lines 23-1 formed in a lattice shape, and the conductive thin film 23 is formed by the plurality of post cut lines 23-1. It can be easily disconnected from each connection terminal 22-1 and 22-2.

FIG. 7 shows a block diagram of a system including the input device shown in FIG. 1.

1 through 6, the system 200 includes a handwriting input device 10 and a microprocessor 210 connected to a bus 201.

The microprocessor 210 may control an operation of the handwriting input device 10. For example, the microprocessor 210 enters the writing input device 10 into a standby state waiting for a user's handwriting input, or inputs data corresponding to a text or a picture input by the user to the writing input device 10. The detection result may be stored in the memory 220.

System 200 may further include an interface 230.

When the interface 230 is implemented as a display device, the display device may display data output from the handwriting input device 10 or the memory 220 under the control of the microprocessor 210.

According to an embodiment, when the interface 230 is implemented as a wireless transmission module, the wireless transmission module may transmit data output from the writing input device 10 or the memory 220 to the wireless communication protocol under the control of the microprocessor 210. After conversion to the corresponding wireless data, the converted data can be transmitted to the host or reader.

System 200 may be implemented as a computer system or a wireless communication system.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

10: input device 20: pad
30: low decoder 40: voltage generator
50: controller 60: readout circuit

Claims (8)

A PCB including a first connection terminal connected to the first lead and a second connection terminal connected to the second lead; And
It is formed on the PCB and includes a conductive thin film for electrically connecting the first connection terminal and the second connection terminal,
The conductive thin film may include a plurality of post-cut lines for cutting the conductive thin film according to a user input so that the first connection terminal and the second connection terminal are electrically separated from each other. The apparatus of claim 1, wherein the handwriting input device comprises:
And a planarization layer formed between the PCB and the conductive thin film and formed between the first connection terminal and the second connection terminal exposed on the PCB. The handwriting input device of claim 1, wherein the handwriting input device is an electronic note paper. The apparatus of claim 1, wherein the handwriting input device comprises:
A signal supply circuit for supplying an operation signal to the first lead formed in the PCB; And
And a signal sensing circuit for sensing a signal output from the second lead formed in the PCB. The apparatus of claim 4, wherein the handwriting input device comprises:
A processor for controlling an operation of the input device; And
And a wireless interface for converting an output signal of the sensing circuit into a wireless signal and transmitting the wireless signal to a reader. An input pad including a plurality of voltage supply lines, a plurality of lead out lines, and a plurality of unit input cells formed between the plurality of voltage supply lines and the plurality of lead out lines;
To decode row addresses, supply a first voltage to one voltage supply line selected from the plurality of voltage supply lines and supply a second voltage to the remaining voltage supply lines among the plurality of voltage supply lines according to the decoding result. A row decoder; And
A readout circuit for decoding readout addresses and for reading out signals of the plurality of readout lines according to a decoding result;
Each of the plurality of unit input cells,
A PCB comprising a plurality of first connection terminals each connected to each of the plurality of voltage supply lines and a plurality of second connection terminals each connected to each of the plurality of lead out lines; And
A conductive thin film formed on the PCB and electrically connecting the plurality of first connection terminals and the plurality of second connection terminals;
The conductive thin film may include a plurality of post-cut lines for cutting the conductive thin film according to a user input so that the first connection terminal and the second connection terminal are electrically separated from each other. Forming a first lead and a second lead in the PCB;
Connecting a first connection terminal to the first conductor and a second connection terminal to the second conductor; And
Electrically connecting a portion of the first connection terminal exposed on the PCB and a portion of the second connection terminal exposed on the PCB using a conductive thin film comprising a plurality of post-cut lines;
And the plurality of post-cut lines allow the conductor thin film to be cut according to a user's input so that the first connection terminal and the second connection terminal are electrically separated from each other. The method of claim 7, wherein the writing input device manufacturing method,
Before first electrically connecting a portion of the first connection terminal exposed on the PCB with the conductor thin film and a portion of the second connection terminal exposed on the PCB, the first connection terminal using a planarizing material. And planarizing between a portion of the portion and the portion of the second connection terminal.

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