KR20080073225A - Electronic memo device - Google Patents

Abstract

An electronic memo device is provided to replace a usual post-it type memo pad, realize portability by implementing flexibility like a card while having a shape like the card, and offer easy accessibility by executing a memo function promptly. A touch panel is formed by using a transparent FPC(Flexible Printed Circuit) and receives a pattern. A storage unit(330) stores pattern data received through the touch panel. A flexible display unit outputs the pattern data received from the touch panel or the storage unit. An input mode receives the pattern from the touch panel and outputs the pattern data to the flexible display unit at the same time. An output mode outputs the pattern data stored in the storage unit to the flexible display unit. A storage mode stores the received pattern to the storage unit when the pattern is completely received.

Description

Electronic memo device

The present invention relates to an electronic memo device, and more particularly, to an electronic memo device using a flexible display.

In recent years, with the development of computer technology, personal digital assistants (PDAs) have emerged as a device to replace the work notebook. These PDAs are equipped with many functions. Among them, in terms of a memo function for use in a work notebook, contents input on the touch panel with a stylus pen are directly displayed on the LCD monitor under the touch panel, and the displayed contents are displayed. You can save it as a file.

However, from the standpoint of the memo function, the notepad embedded in the PDA has a problem in that its accessibility and portability are not relatively easy. That is, although the PDA is getting smaller and lighter, it is large in size to be easily carried in a wallet or the like, and has a disadvantage of having to go through several menu screens in order to execute a memo function in the PDA.

An object of the present invention is to provide a small size, easy access to the memo function, and a flexible electronic notepad.

An object of the present invention is to use a transparent flexible substrate, a touch panel for receiving a pattern, storage means for storing the input data is completed from the touch panel and flexible to output the pattern data received from the touch panel or the storage means It is achieved by an electronic memo device including a display.

The electronic notepad according to the present invention receives an input mode from a touch panel and simultaneously outputs an input mode of the pattern to the flexible display and an output mode of outputting pattern data stored in the storage means to the flexible display. It is desirable to have.

In the electronic memo device according to the present invention, the input mode preferably includes a storage mode for storing the input pattern in the storage means upon completion of the pattern input.

In the electronic memo device according to the present invention, the storage means stores a plurality of pattern data, and the output mode may output only specific pattern data of the plurality of pattern data to the flexible display.

In the electronic memo device according to the present invention, the storage mode displays an identification mark on the stored pattern data and stores the identification mark, and the output mode displays all or part of the identification marks for the plurality of pattern data on the flexible display and touches the touch mode. It is preferable to include a selection mode for selecting specific pattern data by input of the panel.

The electronic notepad according to the present invention preferably further includes an on-off switch.

The electronic notepad according to the present invention further includes an input mode switch and a storage mode switch, and the input mode switch and the storage mode switch preferably each have an on-off function.

The electronic notepad according to the present invention further includes a body portion surrounding the outer circumferential surface or the outer circumferential surface and the lower portion of the touch panel and the flexible display, and a power supply means inside the body portion, preferably in the form of a card.

In the electronic memo device according to the present invention, the body portion is preferably made of a flexible PCB.

In the electronic memo device according to the present invention, the flexible display is preferably a liquid crystal layer wrapped with two flexible substrates on which a transparent electrode plate is formed.

Electronic notepad according to the present invention can replace the existing adhesive notepad used in the office.

The electronic notepad according to the present invention has the advantage of being portable in a wallet or a card collection because it can have flexibility such as a card while having a card form.

Electronic notepad according to the present invention has the advantage that can easily execute the memo function easy accessibility.

The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, with reference to the accompanying drawings will be described a specific embodiment of the present invention.

1 illustrates a flexible display and a touch panel bonding layer of an electronic memo device according to an embodiment of the present invention.

The flexible display and the touch panel bonding layer have a structure in which the flexible display 140 and the touch panel are superposed. The flexible display 140 preferably uses a flexible LCD, and has a configuration in which a liquid crystal layer is wrapped with two flexible films on which a transparent electrode plate is formed.

As a film that can be used in the flexible liquid crystal display used in the present invention, polycarbonate (PC) is a material having transparency that is excellent in heat resistance and used for mass production and general purpose products. PC is a film material that is mass-produced worldwide at a glass transition temperature (Tg) of 150 ° C. As a material with better heat resistance, transparency and mass production than PC, polythersulfone (PES) has been used as a plastic LCD substrate since the late 90s. In addition, in general, polyethylene terephthalate substrates 410 and 415 may be used that are specially treated to have excellent heat resistance although the heat resistance is lower than that of other materials.

3 illustrates the structure of the flexible LCD when the polyethylene terephthalate substrates 410 and 415 are used as described above. The polyethylene terephthalate films 410 and 415, which are the substrates 410 and 415, are subjected to longitudinal and transverse stretching (TD and MD), but the stretching force is constant to be manufactured in the correct stretching direction in the process. This provides a constant optical axis of the polyethylene terephthalate films 410 and 415. Such an optical axis has the s-axis as the direction of the maximum refractive index in the film surface, and the f-axis as the direction orthogonal to the s-axis in the film surface.

In general, the polyethylene terephthalate films 410 and 415 have a phase delay phenomenon, and thus, when inserted between polarizers, the phase delay becomes visible and is not suitable as a display. However, if the f-axis (430, 435) and the absorption axis (440, 445) of the polarizing plate 420, 425 of the optical axis of the polyethylene terephthalate film (410, 415) is correctly aligned so that the above phase delay is eliminated.

Accordingly, the low-cost polyethylene terephthalate film is used as the substrate by parallelly matching the f-axis 430 and 435 of the polyethylene terephthalate films 410 and 415 adjacent to each other and the absorption axes 440 and 445 of the polarizing plates 420 and 425. It becomes usable. At this time, the rubbing direction of the liquid crystal is also made to match the f-axis (430, 435) direction of the polyethylene terephthalate film (410, 415).

In manufacturing a flexible LCD using the polyethylene terephthalate films 410 and 415 as substrates, the polyethylene terephthalate films 410 and 415 may not be able to withstand the temperature during the LCD alignment process. Can also be used.

The flexible display used in the electronic memo device according to the present invention can be applied even when a micro pixel mixture is used instead of a conventional liquid crystal. The micro pixel mixture is formed by mixing a curable polymer having a suitable viscosity and a liquid crystal. When the micropixel mixture is cured, the curable polymer separates from the liquid crystal and surrounds the surface of the liquid crystal. A micro cell having a size of 5 to 200 μm is formed. The curable polymer surrounding the liquid crystal forms a wall while forming a boundary with the polymer of the adjacent microcell. The concentration of the curable polymer affects the wall thickness of the independent cell. For example, the lower the concentration, the narrower the wall thickness of the cell. In the process of mixing the liquid crystal and the curable polymer, heat treatment may be performed according to viscosity. The mixed micro pixel mixture is then injected into the cell. The micro pixel mixture may be heat treated within the range of 25 ° C. to 75 ° C. for smoother injection. When the cell is filled with the micro pixel mixture, the cell is sealed and the curable polymer is cured. During UV curing, a plurality of light sources may be placed on both sides of the cell for a uniform curing process. As the UV or thermosetting polymer is cured, the curable polymer layer formed on the transparent electrode serves as an alignment layer.

The touch panel is attached on the flexible display 140. In this embodiment, a case of using a touch panel by an electric resistance method will be described. The touch panel is a spacer that is formed between the first panel 210, the second panel 230 facing the first panel 210, and the first panel 210 and the second panel 230 to form a predetermined space. It is the structure containing 250.

The first panel 210 includes a first substrate 211, a first transparent conductive film 213 formed on the first substrate 211, a first electrode 215, an electrode induction line 216, and the like. The first electrode 215 is formed to be electrically connected to the electrode induction line 216 along the circumferential direction of the first substrate 211, the electrode induction line 216 is connected to the cable (not shown) one end and the other end It is connected to the first electrode 215. The first transparent conductive film 213 is made of ITO, IZO, ITZO, or the like, and the first substrate 211 uses a flexible film.

The spacer 250 is uniformly formed on the first transparent conductive film 213 of the first substrate 211 in the same dot shape at predetermined intervals, and is an active region that activates a signal input from the outside with an insulating material. Formed).

The second panel 230 includes a second transparent conductive film 233, a second electrode 235, an electrode induction line 236, and the like formed on a lower surface of the second substrate 231. Here, the second electrode is formed to be electrically connected to the electrode induction line 236 along the circumferential direction of the second substrate 231, the electrode induction line 236 is connected to the cable (not shown) once and the other end is second It is connected to the electrode 235. The second substrate 231 uses a flexible film, and according to an embodiment, a flexible film having a polarizing function may be used. The second transparent conductive film is made of ITO, IZO, ITZO, etc. like the first transparent conductive film. . At least one adhesive layer 290 is formed between the first panel 210 and the second panel 230 to bond the first panel 210 and the second panel 230.

Each transparent conductive film is composed of a plurality of conductive lines parallel to each other in the vertical or horizontal direction, and the first transparent conductive film and the second transparent conductive film are perpendicular to each other to detect the touched coordinates. Such a transparent conductive film is generally formed by depositing ITO, IZO, ITZO, etc. on each substrate and then patterning the same.

In the present embodiment, the touch panel has been described as using an electric resistance method. However, if transparency and flexibility are guaranteed, a touch panel by a capacitance measurement method, which is a conventional touch panel, or a touch panel by elastic wave response may be used.

Meanwhile, the touch panel and the flexible display may be configured as one unit.

That is, the upper polarizer of the flexible display may be positioned above the touch panel so that the upper polarizer may simultaneously serve as a protective film of the entire apparatus. In this case, a separate protective film should be used, but the thickness thereof can be significantly reduced.

In addition, the touch panel and the flexible display unit may be configured by using the upper polarizing plate as the first substrate 211 or the second substrate 231 of the touch panel in the electrically resistive touch panel. In this case, one of the two substrates of the touch panel may be omitted, and thus a thinner touch panel and a flexible display unit may be configured.

2 illustrates an electronic notepad according to an embodiment of the present invention.

The coupling layer 100 of the flexible display 140 and the touch panel 200 is supported by the outer circumferential surface or the body 300 surrounding the outer circumferential surface and the lower plate. The body 300 uses a PCB, and therein, a power supply unit 310, a storage unit 330, and a calculation unit 320 are embedded therein, and an electrical connection between the flexible unit 140 and the touch panel is performed. Is formed. The body 300 is preferably provided with an on / off switch or an input mode switch 340 and an output mode switch 350. In addition, the electronic notepad according to the present invention is preferably in the form of a card as a whole.

The computing unit 320 of the flexible display 140 according to the present exemplary embodiment has two modes, an input mode and an output mode. In the input mode, the calculation means 320 temporarily stores the input position of the touch panel and the pattern by the input, and outputs the periodically updated input pattern to the flexible display 140. In the present embodiment, it is preferable to output a pattern to a pixel of the flexible display 140 corresponding to a position input to the touch panel so that the user feels as if he or she writes directly to the notepad using a pen or the like. When the storage button 360 described below is pressed, the arithmetic means 320 stores the temporarily stored pattern together with the identification mark or in a specific storage location of the storage means so as to enable identification. In the output mode, the calculation means first outputs the identification mark of the patterns stored in the storage means to the flexible display 140, and when the position of the specific identification mark is pressed, displays the pattern corresponding to the specific identification mark on the flexible display 140. .

Looking at one embodiment of the operation of the electronic memo device according to the present invention.

When the pattern is input to the electronic memo device, the input mode is activated by pressing the on / off switch or the input mode switch 340 of the electronic memo device that is turned off. When a pattern is input to the touch panel through an input means such as a pen (or a finger), the input pattern is output to the flexible display device 140 simultaneously with the input. The save button 360 is provided separately from the body 300 or displays the save button 360 on the flexible display 140, and when it is detected that the touch panel corresponding to the save button 360 is pressed, the save button 360 is stored. 360 may be determined to be pressed. When the input of the pattern is completed and the storage button 360 is pressed, an identification mark such as a number is displayed on the pattern and the completed pattern is stored in the storage means 330 such as a flash memory. When the user wants to exit the input mode, the electronic notepad is turned off by pressing the on / off switch or the input mode switch 340.

When the pattern stored in the electronic memo device is to be viewed through the flexible display 140, the output mode switch 350 of the electronic memo device is turned off to operate the output mode. In the operation of the output mode, the display mode starts with the selection mode of first outputting the identification display of the patterns stored in the storage means 330 such as the flash memory to the flexible display 140. When the user selects one of the identification marks of the pattern by pressing the corresponding position of the touch panel, the operation device 320 outputs the pattern corresponding to the selected identification mark to the flexible display 140. Preferably, a button for switching back to the selection mode together with the output of the pattern is output to the flexible display 140, and when it is detected that the position on the touch panel corresponding to the selection mode switching button 380 is pressed, the mode is changed to the above selection mode. Can be switched. Preferably, the button 370 for deleting the pattern is output together with the output of the pattern to the flexible display 140, and when the position on the touch panel corresponding to the delete button 370 is detected, the output pattern is output. It may be deleted from the storage means 330. When the user wants to exit the output mode, press the output mode switch 310 to turn off the electronic notepad.

In the electronic memo device of the present invention, it is preferable that a separate reset button capable of deleting all stored patterns is disposed at the rear of the self-government.

Electronic notepad of the present invention may be added with other credit card, access card, transportation card function.

Although the present invention has been shown and described with reference to the preferred embodiments as described above, it is not limited to the above embodiments and those skilled in the art without departing from the spirit of the present invention. Various modifications and variations are possible without departing from the spirit of the present invention and equivalents of the claims to be described below.

1 is an exploded view of a flexible display and a touch panel bonding layer according to the present invention;

2 is a conceptual diagram of an electronic memo device according to an embodiment of the present invention;

3 is an exploded perspective view of the flexible display unit used in the present invention.

<Code Description of Main Parts of Drawing>

100: bonding layer 140: flexible display

210: first panel 211: first substrate

213: first transparent conductive film 215: first electrode

216: electrode induction line 230: second panel

231: second substrate 233: second transparent conductive film

235: second electrode 236: electrode induction line

250: spacer 290: adhesive layer

300: body portion 310: power supply means

320: calculation means 330: storage means

340: input mode switch 350: output mode switch

360: Save button 370: Delete button

380: selection mode switching button 400: liquid crystal layer

410, 415: substrate 420, 425: polarizer

430 and 435: optical axes of substrates 440 and 445: polarization directions of polarizing plates

Claims (11)

A touch panel using a transparent flexible substrate and receiving a pattern; Storage means for storing the input pattern data from the touch panel; And Flexible display for outputting pattern data received from the touch panel or the storage means Electronic memo device comprising a. The method of claim 1, And an input mode for receiving a pattern from the touch panel, simultaneously outputting an input process of the pattern to the flexible display, and an output mode for outputting pattern data stored in the storage means to the flexible display. The method of claim 2, The input mode is an electronic memo device including a storage mode for storing the input pattern in the storage means upon completion of the pattern input. The method of claim 3, wherein And the storage means stores a plurality of pattern data, and wherein the output mode outputs only specific pattern data of the plurality of pattern data to the flexible display. The method of claim 4, wherein The storage mode stores an identification mark on the pattern data to be stored and stores the identification data together with the identification mark, and the output mode displays all or a part of the identification marks for the plurality of pattern data on the flexible display, Electronic memo device including a selection mode for selecting the specific pattern data by. The method of claim 4, wherein Electronic memo device further comprises an on-off switch for turning on or off the electronic notepad. The method of claim 4, wherein And an input mode switch and a storage mode switch, wherein the input mode switch and the storage mode switch each have an on-off function of turning on or off an electronic notepad. The method of claim 4, wherein A body part surrounding an outer circumferential surface or an outer circumferential surface and a lower portion of the touch panel and the flexible display; And Power means inside the body portion Further comprising, the electronic memo device in the form of a card. The method of claim 8, The body is an electronic memo device made of a flexible PCB. The method of claim 8, The flexible display is an electronic memo device in which a liquid crystal layer is surrounded by two flexible films having a transparent electrode plate formed thereon. The flexible display device of claim 1, wherein the flexible display unit comprises: Liquid crystal layer; Upper and lower polyethylene terephthalate substrates surrounding the liquid crystal layer; And Vertical polarizing plate surrounding the upper and lower polyethylene terephthalate substrate And a polarization direction of the polarizing plate is parallel to an optical axis of the adjacent polyethylene terephthalate substrate.

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