KR101391426B1 - Input and output multi device - Google Patents

Abstract

The present invention is characterized in that a waveguide sheet on which a pattern for inputting or outputting data is formed forms a bent portion and is directed downward through an end portion on the PCB side and a light source for irradiating light to the end portion of the waveguide sheet, Output device that is provided at the bottom of the PCB and can dramatically increase the area of the input or output for input or output of data.
An input-output device according to the present invention comprises a PCB; A waveguide sheet in which a pattern for input or output of data is formed and which has a bent portion whose end is directed downward of the PCB; Relay means for transmitting the touch state of the waveguide sheet pattern to the PCB; A light source provided at a lower portion of the PCB to irradiate light at a bent end portion of the waveguide sheet; And a case for receiving the PCB, the waveguide sheet, the relay means, and the light source.

Description

[0001] INPUT AND OUTPUT MULTI DEVICE [

The present invention relates to an input-output device,

More specifically, the end portion of the waveguide sheet on which a pattern for inputting or outputting data is formed forms a bent portion and is directed downward through an end portion on the PCB side, and irradiates the waveguide sheet end portion with light so that the pattern of the waveguide sheet is developed The light source is provided under the PCB,

When the input-output device is configured using the same case and a light source, the area of the input or output for input or output of data can be significantly increased as compared with a conventional device having a light source on the PCB,

Further, the light sources for arranging the plurality of waveguide sheets in plural layers and irradiating the pattern of each waveguide sheet can emit only a specific waveguide sheet or a specific pattern by the selective lighting means and the screening developing means, It is possible to implement simple and various modes

Output devices that can be applied to various fields such as remote controllers, cooking utensil input units, and interior kiosks.

A key input device, which is a representative input device and is applied to a mobile phone or a remote controller, is a device for inputting a command signal of a user to the electronic device.

Various electronic devices have been developed and released due to the rapid development of electronic communication technology, and functions of electronic devices are becoming diversified.

The remote controller Rp, which is a kind of input device shown in Fig. 1 [A], is a simplified version of the utility model registration No. 0438645 "conversion-type keypad package using a waveguide sheet" The waveguide sheets G1 and G2 are formed on the upper part of the PCB R2 and the light sources L1 and L2 provided on both sides of the upper part of the PCB R2 irradiate light from the waveguide sheets G1 and G2 Thereby allowing the pattern of the waveguide sheet to be developed.

In this conventional remote controller Rp, there is a blank zone which can not be utilized as an input unit IP for data input,

First, an area for attaching means R3a (using various double-sided adhesive members) for joining the case R1 to an overlay sheet (or window) R3, that is, an area for both sides corresponding to a bezel region The first blank zone Z1 is generated.

The second blank zone Z2 is also generated by the light source L1 (L2) and the first light blocking bracket SB1 which prevents the light from the light source from being irradiated to other parts than the waveguide sheets G1 and G2.

The third blank zone Z3 is generated because the luminance is excessively high due to a hot spot phenomenon in the adjacent region of the light sources L1 and L2 so that it is not suitable for forming an input unit (or an output unit in various output devices such as a kiosk) .

Further, in the case of constructing the multi-input section by introducing the waveguide sheet into two layers (or three or more layers) as shown in Fig. 1 (A), the light source of the waveguide sheets G1 and G2, The second light blocking bracket SB2 is introduced to prevent the light from the light source from flowing out and being wasted at the opposite end. Since the light sources of the respective waveguide sheet layers are arranged at staggered positions for a compact arrangement structure, The third blank zone Z3 for avoiding the phenomenon is overlapped with the second light blocking bracket SB2 or the area is further enlarged due to the second light blocking bracket.

The first through third blank zones Z1, Z2, and Z3 are factors that reduce the area of the effective input unit IP or the effective output unit in constructing the input or output device

It is one of the biggest obstacles to development of a product that maximizes the effective input area or the effective output area while securing a compact product with a light and simple shortening tendency.

On the other hand, in the key input device of the electronic device, the number of keys is increased by various functions,

The number of keys is increasing in order to operate various electronic devices with a single key input device (in the case of a remote controller) or to secure an input key for implementing various functions.

For example, in the early days of a mobile phone, there was only a simple voice call function, but now the SMS service, the camera function, the DMB function, and the navigation function are provided so that the number of keys is increased to use each function, (Qwerty) keyboard which is implemented in mobile phone.

In the case of a remote controller, the number of keys has been increased to operate various household appliances such as a TV set, a VTR, a DVD, a refrigerator, and an air conditioner.

As the number of input buttons (or input keys or input devices) increases in such various input devices, conventionally, a plurality of keys are displayed on one button of the key input device,

We have been using a method to change the mode as needed.

However, such a simple method of increasing the number of buttons increases the size of the input device, which does not fit with the tendency to miniaturize for the portability of electronic products, and causes an increase in manufacturing cost.

In addition, displaying a plurality of input functions on a single button requires the user's attention to the operation, and the size of the displayed key is reduced, thereby lowering the cognitive power of the user and causing eye fatigue.

In order to solve the problem as described above, a utility model registration No. 0438645 entitled " Conversion type keypad package using a waveguide sheet "has been proposed.

 As shown in the simplified form in Fig. 1 (A), the registration utility model laminates a first waveguide sheet G1 on which a numeric pattern is printed and a second waveguide sheet G2 on which a character pattern is printed, Only a pattern provided on a waveguide sheet on which light is incident is displayed externally through a semi-transparent film (T) interposed between the one waveguide sheet and the second waveguide sheet for selectively blocking numerical or character patterns,

When a user selects a function or an electronic device to be used in the key input device (remote controller Rp), the specific light source L1 (L2) is turned on and light is incident on the corresponding waveguide sheet, Are displayed externally.

Therefore, the registration utility model can display a larger number of keys by using fewer buttons.

However, the above-mentioned registration utility model has a problem that the pattern displayed on the button is displayed unclearly and darkly (or dimly), and that the displayed pattern is slightly overlapped with another pattern.

This problem is caused by the semi-transparent film used for preventing the interference between the laminated structure of the two waveguide sheets and the laminated waveguide sheet.

The first waveguide sheet G1, the semitransparent film T and the second waveguide sheet G2 are stacked in this order from bottom to top under a key top (overlay sheet R3) provided with a plurality of buttons ,

The pattern of the first waveguide sheet and the pattern of the second waveguide sheet are superimposed and disposed under one button. Of course, the light incident on the first waveguide sheet is reflected by the pattern and transmitted to the upper portion, Is transmitted through the translucent film and the second waveguide sheet and is exposed to the button of the key top (overlay sheet R3).

At this time, since the translucent film T shields and transmits a part of the light incident on the first waveguide sheet G1, the amount of light reaching the button of the key top decreases,

Since the light reflected from the pattern (character pattern) of the first waveguide sheet is not transmitted only to the upper portion in a straight line but is refracted and diffused while passing through the first waveguide sheet or translucent film, The diffused light enters the area of the second waveguide sheet that is not overlapped with the pattern of the second waveguide sheet so that the character pattern of the first waveguide sheet is clearly displayed on the keytop button and the numerical pattern of the second waveguide is faintly displayed thereon Are superimposed and displayed.

When the light is incident on the second waveguide sheet, there is no blocking of light by the translucent film, so that the numerical pattern of the second waveguide sheet is clearly displayed on the keytop button. However, since a part of the incident light is reflected by the translucent film and the first waveguide sheet There is a problem that the character pattern is superimposed on the numeric pattern on the keytop button in a superimposed manner.

In addition, the input pattern of a product commercialized based on the registered utility model is limited by the number of laminated waveguide sheets, so that the number of sheets is limited to two or three for the purpose of ensuring clear visibility, The pattern is also limited to two or three,

It is not suitable for implementing input-output devices for inputting and outputting more complicated and various information.

The situation in which the number of stacked waveguide sheets is limited and thus the implementation of a wider variety of input (or output) modes is restricted is also the case where the light source provided on the side of each waveguide sheet G1 (G2) Since the heights of the waveguides L1 and L2 are significantly higher than that of the waveguide sheet, the height of the device increases as the waveguide sheet is arranged for each waveguide sheet.

Therefore, the end of the waveguide sheet on which the pattern for inputting or outputting data is formed forms a bending portion and is directed downward through the PCB side end portion, and irradiates the waveguide sheet end portion with light so that the pattern of the waveguide sheet is developed When the input-output device is constructed using the same case and a light source, the light source is provided in the lower portion of the PCB. In the conventional device in which the blank zone necessarily occurs due to the overlay sheet attaching means, the light source, Output device for inputting or outputting data, in which the area of an input or output portion for data input can be significantly increased, compared with a conventional input-output type of PCB.

Another object of the present invention is to provide a matrix-type multi-input-output device capable of inputting and outputting a variety of information in a more complicated manner and allowing the user to input or obtain necessary information more conveniently.

Further, according to the present invention, the light sources irradiating the patterns formed on the plurality of waveguide sheets constituting the multilayer can emit only a specific waveguide sheet or a specific pattern by the selective lighting means and the sorting and developing means, Output device of a matrix type which can be applied to various fields such as a remote controller, an input part of a cooking instrument, an interior kiosk, and the like.

In addition, the present invention is characterized in that a specific light source is turned on by the selective lighting means so that only a specific pattern can be developed, not a whole pattern of a waveguide sheet of a single layer, so that a multi- And to provide a device.

Another object of the present invention is to provide a multi-input-output device of a matrix type, which is implemented in such a manner that the selective lighting means operates the specific pattern element of the present-stage emergence pattern so that the next-step pattern is developed.

According to an aspect of the present invention, there is provided a PCB lower light-tuning type input-output device,

PCB;

A waveguide sheet in which a pattern for input or output of data is formed and which has a bent portion whose end is directed downward of the PCB;

Relay means for transmitting the touch state of the waveguide sheet pattern to the PCB;

A light source provided at a lower portion of the PCB to irradiate light at a bent end portion of the waveguide sheet; And

A PCB, a waveguide sheet, a relay means, a case for receiving a light source;

.

Further, in the PCB bottom emission type input-output device according to the present invention, the bent portion of the PCB may include a first vertical bent portion at the PCB side end and a second horizontal bent portion bent toward the PCB inner side.

Further, the matrix type multi-input-output device according to the present invention

A plurality of waveguide sheets formed with patterns for input or output of data;

A plurality of light sources for irradiating light so that a pattern of the waveguide sheet is developed;

A selective lighting means for lighting a specific one of the light sources; And

Selecting means for causing the light of the light source turned on by the selective lighting means to emit only a specific waveguide sheet or a specific pattern;

.

Further, in a matrix type multi-input-output device according to the present invention

Wherein a part of or all of the waveguide sheet is provided with a plurality of light sources, and the light source turned on by the selective lighting means causes a part of the pattern of the waveguide sheet to be developed,

Further, the selective lighting means illuminates a specific light source by contact with a pattern portion developed by the light source,

The screening and developing means is a light shielding sheet arranged on each of the waveguide sheets and having a light transmitting portion having a shape corresponding to a pattern in which patterns of the waveguide sheets are overlapped,

It is preferable that the light-transmitting portion of the light-shielding sheet located on the upper side has a third pattern in which the first pattern of the waveguide sheet and the second pattern of the waveguide sheet located below are overlapped.

On the other hand, the sorting and advancing means may alternatively be a diffusion preventing sheet arranged between the upper and lower waveguide sheets so as to suppress the amount of light so that the light source for irradiation of one waveguide sheet can not irradiate the other waveguide sheet.

The input-output device according to the present invention is characterized in that the end portion of the waveguide sheet in which a pattern for inputting or outputting data is formed forms a bending portion and is directed downward through an end portion of the PCB side, and the waveguide sheet end A light source and a light-shielding bracket are provided on a lower portion of the PCB to form an input-output device using the same case and a light source, The area of the input or output portion for data input or output can be drastically increased compared to the case where the light source is provided on the PCB. In addition, the light sources for irradiating the pattern formed on the plurality of waveguide sheets constituting the multi- And the specific waveguide sheet or the specific pattern (Input) or output (output) mode of the data can be implemented in a simple and various manner, so that it can be applied to various fields such as a remote controller, an input unit of a cooker, an interior kiosk, The specific light source is turned on to illuminate only a specific pattern instead of the entire pattern of the waveguide sheet of one layer. Thus, it is possible to realize a multi-channel input unit or an output unit. Further, The pattern of the next step is developed by manipulating the pattern element. As a result, it is possible to input / output a variety of information in a more complicated manner, so that the user can easily input or obtain necessary information.

1 (A) is a schematic cross-sectional view of a conventional PCB top light-irradiated input device, and FIG. 1 (B) is a schematic cross-sectional view of a PCB bottom light-irradiated input-output device according to the present invention.
2 is a sectional view showing an example of a keypad type input device based on a matrix type multi-input device according to the present invention;
3 is an exploded perspective view related to the lamination structure of a matrix type multi-input device according to the present invention;
FIG. 4 is a block diagram of a matrix of multi-input devices according to the present invention, in which a specific light source is turned on by a selective lighting means to illuminate a specific pattern of a waveguide sheet, .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, 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 to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be noted that the first to second to third and the like described in the present specification are merely referred to in order to distinguish the different components from one another and do not depend on the order in which they are manufactured, The names may not match in the range.

1 (B) schematically showing a remote controller (R) corresponding to an input device among the PCB lower light-tuning type input-output devices according to the present invention,

The present invention is provided with a waveguide sheet and an overlay sheet R3 (or window) in which a PCB R2 is arranged in a case R1, and a pattern is formed thereon.

2 and 3, when the plurality of waveguide sheets are provided for the purpose of realizing input units IP (or output units) in various modes,

Only the specific waveguide sheet or the specific pattern can be caused to emerge by the operation of the selective lighting means of the light sources L1 and L2

In order to prevent the light of a light source which has been turned on for the specific pattern development of a waveguide sheet from reaching the development of another waveguide sheet or another pattern of the same waveguide sheet which is not intended, Corresponds to the layer GC1 (GC2).

In addition, a metal dome and an actuator (see FIG. 2 and related later) or a capacitance (not shown) for transmitting the touch state of the waveguide sheet pattern, that is, the pressing or contact of the overlay sheet R3 to the PCB R2, (For example, only a PCB is shown for convenience and a relay means is not shown).

Both ends of the overlay sheet R3 (or a normal window) constituting the input unit IP unique to the remoter controller R for the protection of the built-in components of the case R1 and the operation of the TV, Adhesion means (R3a) such as a double-sided tape is provided between the upper stepped portions for accommodating, so that both components can be joined.

One of the essential points of the present invention is that the waveguide sheet has the bent portion GB and the end portion is directed to the lower portion of the PCB R2 and that the light source is also arranged below the PCB R2, In particular, light for emitting the waveguide sheet pattern is irradiated to the end of the bent portion.

This feature is applied to both cases where the waveguide sheet is provided with one layer or two or more layers,

When the waveguide sheet with two or more layers is introduced, the waveguide sheet composite layer GC1 (GC2) itself in which the light shielding sheet as the sorting and developing means for developing only one pattern of the waveguide sheet is joined constitutes a bent portion, Only the sheet can constitute the bent portion.

As shown in FIG. 1B, the bent portion GB of the PCB R2 has a first vertical bent portion GB1 at the PCB side end and a second horizontal bent bent portion GB1 bent toward the PCB inner side, And GB2.

Here, the meaning of the 'vertical' direction and the 'horizontal' direction is not a strict vertical and horizontal sense, but a bent region where the ends of the waveguide sheet or the waveguide sheet composite layer primarily surrounds the PCB side end, (L2) It is a selected expression to briefly refer to the curved bent portion toward the inside of the PCB secondarily for easy installation and realization of a relatively thin input device.

Due to advantages such as light source (L1) (L2), particularly small size, light weight, low heat generation, reflection configuration, high speed response characteristic, pulse operation characteristic, Considering ease of installation and heat dissipation

The folded portion of the waveguide sheet or the waveguide sheet composite layer may be provided with only the vertical first bend GB1 (the light source may be installed at the lower end of the case R1)

(The light source may be fixed to the light-shielding and fixing bracket SB1 or fixed to the bottom plate of the case R1 which is not shown), or to a horizontal second bent portion GB2 curved toward the inside of the PCB side,

(Not shown) extending from the second bent portion and curved toward the bottom surface of the PCB (the light source may be fixed to the PCB R2).

The light shield bracket SB1 on the side of the light source L1 and L2 has a function of supporting the light source in addition to the shielding function and the light shield bracket SB2 (Considering the light-shielding property of the waveguide sheet composite layer in which the light-shielding sheet is laminated), or may be replaced by a method of coating the end of the waveguide sheet with a black layer or the like instead of the light-shielding bracket.

As described above, the conventional remote controller Rp of Fig. 1 [A] has the first blank zone Z1 caused by the attachment means R3a, the second blank zone Z2 caused by the light source, the hot spot hot spot generation phenomenon and the third blank zone Z3 due to the light blocking bracket SB2 are generated and the area loss of the effective input unit IP is large,

Since only the first blank zone Z1 is generated in the present invention of FIG. 1B, it is possible to secure an additional effective IP area of at least 15 mm in the case of a remote controller, Of the total population.

In addition, when the concept of the PCB lower light-tuning type input-output device according to the present invention is adopted, it is possible to provide a product in which the shape of the overlay sheet R3 is curved,

Beyond this, the PCB R1, the waveguide sheet, the relay means, and the case R1 accommodating the light source are also deformed, so that the shape of the input-output device itself is not an ordinary rod type having a rectangular cross section but an elliptical column, It is possible to realize a product having various designs.

Next, as shown in Figs. 3 and 2, the concept of a multi-input-output device of a matrix type will be described with reference to an input-output device D according to the present invention.

The matrix type multi-input-output device includes a plurality of waveguide sheets G1, G2, and G3, a plurality of light sources that emit light so that the pattern Gp of the waveguide sheet is exposed, And a selecting means for causing the light of the light source to emit only a specific pattern or a specific pattern.

The concept of the input-output device according to the present invention is a step-by-step menu selection of a membrane switch (an input device) for inputting a microwave oven or other cooking mode for each cooking step, a vending machine, , A remote controller (input device) for various home electronic devices such as a TV, a kiosk (output device) for stepwise building area guidance such as a complex shopping mall, and the like.

FIG. 2 is a schematic cross-sectional view of a keypad type input device D constructed by applying the concept of a matrix type multi-input-output device according to the present invention.

2, the keypad type input device 1 includes a frame 6,

A key top 2 that is coupled to the case so that a button pressed by the user with a finger is exposed to the outside, a PCB 5 provided with a contact (not shown)

A metal dome 3 having elasticity and connected to the PCB 5 so as to be disposed on the contact point,

(Waveguide sheet + selective emergence means + light source (not shown) lamination assembly D), which is a multi-input-output device of the present invention interposed between the metal dome 3 and the key top 2,

The keypad type input device (1) includes an actuator (4) provided on the upper surface of the metal dome (3).

When the user depresses the button of the key top 2, the keypad type input device 1 configured as described above allows the device D, which is a stacked assembly disposed at the lower portion thereof, to descend to press the actuator 4 down, The metal dome 3 is lowered by the actuator 4 and is brought into contact with the contact point of the PCB 5 to input a user's operation signal.

Then, when the external force that the user presses down disappears, the metal dome 3 and the device D are returned to the initial state by the elastic restoring force.

Hereinafter, a keypad type input device among the input-output devices D according to the present invention will be described with reference to the drawings. However, the present invention is not limited thereto, and the scope of the present invention is limited Can not be done.

3, an input-output device, in particular an input device, and more particularly a keypad-type input device according to the present invention may be used for multiple (two-channel) G3 and G3 of the waveguide sheet are provided on the upper surface of the waveguide sheet and the screening and developing means S of the upper portion of each waveguide sheet are provided and the black sheet B is laminated and combined at the lowermost portion.

In addition, a plurality of light sources for irradiating a pattern Gp formed on part or all of the waveguide sheets G1, G2 and G3 are provided (in FIG. 3, a plurality of light sources are provided for each waveguide sheet)

More particularly, the present invention relates to an LED having a small size, a light weight, a small heat generation, a reflecting structure, a high speed response characteristic, a pulse operation capability, L1a and L1b (L2a and L2b) (L12 and L2b) are provided at two positions in a staggered position for each waveguide sheet in accordance with the shortening tendency. In FIG. 3, LEDs, which are light sources, are provided on the side surfaces of the waveguide sheet for the sake of convenience.

The waveguide sheets G1, G2 and G3 are made of highly transparent materials such as PC, PE, PET, PU, PMMA and glass, ) And transmits the incident light to the opposite side surface. These waveguide sheets G1, G2 and G3 form the waveguide sheet composite layers GC1, GC2 and GC3 together with the light shielding sheet S which is a screening and developing means to be described later.

Also, some or all of the light sources may be of a type that emits light of different wavelengths.

And is softened and elastic so as to be restored to the initial state after the pressing force has been extinguished (or, alternatively, the keypad 2 (referred to as the overlay sheet R3 in FIG. 1) , A signal is transmitted in response to a user's touch when a capacitive sensitive or resistive (or pressure sensitive) touch sensor is introduced, and various known signals for transmitting the touch state of the waveguide sheet pattern to the PCB Delivery relay means can be introduced).

Further, a pattern Gp is provided on one surface of each of the waveguide sheets G1, G2 and G3. The pattern Gp means numbers, letters, symbols, etc.,

The symbol indicated by the pattern Gp is a character, an Arabic numeral (0 to 9), a character having an Arabic numeral (e.g., 1, 2, 3, ...) : one, two, three, ...), or other forms of symbolic symbols, numbers or letters, or combinations thereof, which are customary or promised according to the individual purpose.

The pattern Gp may be formed by printing on the surface of the waveguide sheets G1, G2 and G3, in particular by screen printing, ink of a material having diffuse reflection characteristics.

The pattern Gp may be formed by etching the surfaces of the waveguide sheets G1, G2 and G3 in addition to the screen printing method or by forming dots in various ways on the surfaces of the waveguide sheets G1, G2 and G3 .

As described above, the pattern Gp can be formed in various ways. When the patterns Gp are displayed on the surface of the key top 2 and recognized by the user, the patterns Gp displaying the similar function and the patterns Gp displaying the other functions Gp) can be divided into a plurality of patterns Gp so that the pattern Gp can be printed with a transparent pattern and a color pattern by screen-printing ink of a material reflecting light of a specific wavelength for each function have.

Next, the selective lighting means turns on a specific light source among the light sources. In the input device 1 of the keypad type in FIG. 2, the selective lighting means is constituted by a switch SW provided on the side of the frame 6.

Further, the selective lighting means can be realized in such a manner that a specific light source is lit by contact with a pattern portion developed by a light source.

That is, the selective lighting means can be realized in such a manner that the pattern of the next step is developed by manipulating (pressing or touching) a specific pattern element of the present-emergence pattern.

An example of such a selective lighting means will be described. When a cooking menu selection button of a microwave oven is constructed on the basis of the present invention, when a frozen rice cake is finally used in selecting a rice cake menu

A set of menu buttons corresponding to the first channel is firstly displayed using the switch SW provided on the side of the frame 6 of FIG. 2,

When the defrost button of the first channel is pressed, the other light source is turned on

A set of menu buttons corresponding to the second channel is illuminated and developed, and when the rice cooking button of the second channel is pressed, another light source is turned on

A set of menu buttons corresponding to the third channel is illuminated and developed, and when the rice cake button of the third channel is pressed, another light source is turned on

A set of menu buttons corresponding to the fourth channel is illuminated and developed, and the crispness of the fourth channel (rice cake - cooked degree) - crispy (depending on the degree of grill, Can be configured to divide and select)

It is possible to implement a matrix type multi-membrane switch to operate the microwave oven.

Next, the screening and developing means serves to cause the light of the light source turned on by the selective lighting means to emit only a specific waveguide sheet or a specific pattern.

2 and 3 are arranged between the waveguide sheet G1 of the first layer and the waveguide sheet G2 of the second layer and between the waveguide sheet G2 of the second layer and the waveguide sheet G2 of the waveguide sheet G2 of the third layer, (G) and a light shielding sheet (S)

When some or all of the light sources L1a and L1b (L2a and L2b) (L12 and L2b) for the respective waveguide sheets are turned on, the light of the light source serves to reduce the amount of light so that the pattern Gp of the other waveguide sheet is not developed .

To this end, the light-shielding sheet S is provided with a light-transmitting portion S1c (S2c) corresponding to a pattern in which the patterns of the respective waveguide sheets are overlapped, corresponding to the pattern Gp of the waveguide sheets G1, G2, (S3c).

3, the patterns Gp of the respective waveguide sheets G1 (G2) and G3 are different from each other, so that the light transmitting portions S1c, S2c, and S3c of the respective light- The shape is also different.

However, unlike the pattern Gp of the second waveguide sheet G2, the transparent portion S2c of the other second-layer light-shielding sheet S differs from the pattern Gp of the second waveguide sheet G2

The pattern Gp of the first and second waveguide sheets G1 and G2 is superimposed,

The transparent portion S3c of the third-layer shading sheet S is different from the pattern Gp of the third waveguide sheet G3

And the patterns Gp of the first, second and third waveguide sheets G1, G2 and G3 are superimposed.

Alternatively, the light of each of the light sources L1a and L1b (L2a and L2b) L12 and L2b does not affect the pattern Gp of the waveguide sheet other than the waveguide sheets G1, G2 and G3 The selection means

As shown in the left one-dot chain line in Fig. 3,

Diffusion preventing sheet Sp provided between the first and second waveguide sheets G1 and G2 and between the second and third waveguide sheets G2 and G3.

This diffusion preventing sheet Sp is opaque or translucent or is processed to transmit only light of a specific wavelength band so that the light amount of the light source for one waveguide sheet is reduced or shielded so as not to develop the pattern Gp of another waveguide sheet It plays a role.

Furthermore, the screening and developing means may be configured to divide the area of each waveguide sheet so that the light of one or a part of the plurality of light sources provided in one waveguide sheet G1, G2, Lt; / RTI >

Such a partition may be a printed layer provided on each waveguide sheet (for example, a waveguide sheet arranged on one layer is cut and a printed layer is introduced on the cut surface), a processed portion (formed in a vertical direction)

A partition provided on the waveguide sheet,

A printed layer or a processed portion introduced into the film provided on the upper or lower portion of the waveguide sheet or both of them.

Alternatively, the selection and development means may be a pattern composed of a light source for irradiating light of a specific wavelength band and an ink for reacting to the light source light of the specific wavelength band.

Again referring to Figs. 2 and 3, the light shielding sheet S constituting the sorting and developing means will be described.

The light shielding sheet S is made such that the light that enters the light shielding sheet from the waveguide sheets G1, G2 and G3 provided at the lower portion thereof is transmitted only through the light transmitting portion 25, To prevent light from entering into the chamber,

2 and 3, the light shielding sheet S is arranged on each of the three laminated waveguide sheets G1, G2 and G3, and the lower shielding sheet S is arranged on the lower surface of the lowermost first waveguide sheet G1. A black sheet B is provided.

Each light shielding sheet S is not only reflected by a pattern Gp provided in its own waveguide sheets G1, G2 and G3 but also by a pattern Gp provided on another waveguide sheet disposed therebelow The light emitted from the light projecting portions S1c, S2c and S3c flows out to the upper portion through the light projecting portions S1c, S2c and S3c, leaked to

(P1a, P1b) (P2a, P2b) (P3a, P3b) displayed to the user are clearly displayed and free from deformation.

The light shielding sheet S blocks the light incident on the upper waveguide sheets G3 and G2 from entering the lower waveguide sheet G2 G1 and applies the corresponding pattern Gp to the keytop 2 button. So that the other patterns Gp are not superimposed and displayed.

For example, in the absence of the light shielding sheet S, the upper waveguide sheet G3 (the light sources L3a and L3b (L2a and L2b) Most of the light is incident on the lower waveguide sheet G2 G1 or the lower waveguide sheet G2 through the upper waveguide sheets G3 and G2, The light can be introduced into the sheet G2 G1 and the light introduced into the lower waveguide sheet G2 G1 can be reflected by the pattern Gp of the lower waveguide sheet G2 The light of the light sources L3a and L3b (L2a and L2b) can flow only into the upper waveguide sheets G3 and G2 and the lower waveguide sheet G2 It can not enter.

The light introduced into the upper waveguide sheets G3 and G2 is shielded and destroyed by the sorting and developing means S even though the light is refracted and diffused and hardly flows into the lower waveguide sheet G2 The inflow light can be prevented from reaching the pattern Gp in consideration of the inflow direction and reaching the pattern Gp through the transparent portion S2c (S1c) And is not easily transmitted again to the transparent portion S2c (S1c).

The light shielding sheet S has transparent layers S1b, S2b, and S3b and a printed layer S1a, S2a, and S3a,

The transparent layers S1b, S2b, and S3b are made of a transparent material so that the incident light can be transmitted to the upper portion. The transparent layers S1b, S2b, and S3b may be made of PC, PE, PET, PU, PMMA or glass.

The transparent layers S1b, S2b, and S3b may be formed of a transparent transparent film, or may be formed by UV molding a liquid transparent synthetic resin on the surfaces of the waveguide sheets G1, G2, and G3.

The printed layers S1a, S2a and S3a are printed on one side of the transparent layer S1b excluding the transparent portion 25 and are printed on the entire surface except for the transparent portions S1c, S2c and S3c It is preferable to print in black or achromatic color so as to completely block the light.

The printing layers S1a, S2a, and S3a are formed by the printing method (inversion printing) by allowing the transparent portions S1c, S2c, and S3c to be formed at the precise positions of the surfaces of the transparent layers S1b, S2b, The print layers S1a, S2a, and S3a may be formed by bonding the transparent layers S1b, S2b, and S3b to the black film provided with the transparent portions 25, The layers S1a, S2a, and S3a may be formed. That is, the printing layer is not necessarily formed by printing in a manner that it is named as the printing layer.

Since the sorting and developing means S disposed at the uppermost portion is exposed and contacts the key top 2, it also serves as a protective layer.

Therefore, the screening and developing means S disposed at the uppermost portion can prevent the print layer S3a from being exposed by allowing the transparent layer S3b to be disposed on the upper side and the print layer S3a to be disposed on the lower side, It is preferable to prevent scratches or deform the shape of the transparent portion.

The black sheet B is disposed under the first waveguide sheet G1 to prevent the light emitted from the light source and introduced into the waveguide sheet G1 from flowing out to the lower portion of the waveguide sheet G1, (Electronic device mounted on the PCB), and the shapes of the pattern Gp and the light-transmitting portion disposed on the upper side are more clearly seen.

The black sheet B is also composed of a transparent layer B2 and a print layer B1 like a translucent sheet, but the translucent portion is not provided in the print layer. In other words, the entire one surface of the transparent layer B2 is printed in black.

The transparent layer B2 of the black sheet B can also be formed by bonding a transparent film to the lower surface of the waveguide sheet G1 or by UV-molding a liquid transparent synthetic resin on the lower surface of the waveguide sheet G1. The print layer B2 may also be formed by printing black ink on one surface of the transparent layer B1, or by adhering a black film to one surface of the transparent layer.

As described above, the multi-input-output device D according to the present invention can have various forms and combinations. As shown in the conceptual diagram of FIG. 4,

The specific light source may be turned on (by stepwise selection as necessary) by the selective lighting means to have a matrix of the emerging patterns appearing when a specific pattern of the waveguide sheet is irradiated,

In the illustrated embodiment, a matrix of nine channels can be identified based on FIG. 2 and FIG. 3 to show an example of a combination of the patterns P 1 a and P 1 b (P 2 a and P 2 b) (P 3 a and P 3 b) of the multi-input-output device D .

In the above description, conventionally known techniques related to a multi-input-output device and the like are omitted, but those skilled in the art can easily guess and infer and reproduce the same.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the invention is not limited thereto. Various modifications, alterations, and changes may be made by those skilled in the art. And substitutions are to be construed as falling within the scope of protection of the present invention.

D: Input-output device G1, G2, G3: Waveguide sheet
GC1, GC2, GC3: waveguide sheet composite layer GB, GB1, GB2:
Gp: patterns P1a, P1b, P2a, P2b, P3a, P3b:
L1, L2, L1a, L1b, L2a, L2b, L3a, L3b:
SW: Select lighting means
S: Shading sheet S1a, S2a, S3a: Shading layer
S1b, S2b, S3b: transparent layers S1c, S2c, S3c:
Sp: diffusion prevention sheet
1: Keypad type input device 2: Key top
3: Metal dome 4: Actuator
5: PCB 6: Frame
R: Remote controller R1: Case
R2: PCB R3: Overlay sheet
SB1, SB2: Shading bracket Z1, Z2, Z3: Blank zone

Claims (9)

A plurality of waveguide sheets formed with patterns for input or output of data;
A plurality of light sources for irradiating light so that a pattern of the waveguide sheet is developed;
A selective lighting means for lighting a specific one of the light sources; And
And a selector means for causing the light of the light source turned on by the selective lighting means to emit only a specific waveguide sheet or a specific pattern,

A part or all of the waveguide sheet is provided with a plurality of light sources for irradiating one waveguide sheet,
Wherein the selective lighting means illuminates a specific light source by contact with a pattern portion developed by the light source,
One light source that is turned on by the selective lighting means emits a specific pattern of one waveguide sheet,
Wherein the screening and developing means is a light shielding sheet arranged on each waveguide sheet and having a light transmitting portion in a shape corresponding to a shape in which the patterns of the waveguide sheets overlap each other, And a third pattern of a shape obtained by superimposing a second pattern of a waveguide sheet located at a lower portion of the input-output device. The method according to claim 1,
Further comprising a PCB,
Wherein an end of each of the waveguide sheets has a bending portion facing the lower portion of the PCB,
Wherein the light source is provided under the PCB to irradiate light at a bent end of the waveguide sheet. 3. The method according to claim 1 or 2,
Wherein the bent portion of the PCB includes a first vertical bent portion at the PCB side end and a second horizontal bent portion bent toward the inside of the PCB side end portion. delete delete delete delete delete delete

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