KR200426231Y1 - Window-integrated keypad and wireless terminal with same - Google Patents

Abstract

The present invention provides a window integrated keypad of a wireless terminal comprising a keypad portion, a window frame integrally formed with the keypad portion, a window formed between the window frames, and an EL device formed under the keypad portion for emitting light. In this way, by providing a window-integrated keypad, a conventional process of combining the window portion and the keypad is omitted, thereby reducing the manufacturing cost and the assembly cost, and increasing the yield. Meanwhile, the light emitting device is provided in the window frame as well as the keypad portion. Aesthetics will increase.

Wireless terminal, keypad, window, light emitting

Description

Window-integrated keypad and wireless terminal with same {One Body Type Keypad Comprising Window And Wireless Telephone Having The Same}

1 is a perspective view showing a typical wireless terminal,

2 is a plan view of a window-integrated keypad and a wireless terminal having the same according to an embodiment of the present invention;

3a and 3b is a cross-sectional view of the keypad portion of the window-integrated keypad according to another embodiment of the present invention,

4 is a cross-sectional view of the keypad part of the window-integrated keypad according to another embodiment of the present invention;

5 is a cross-sectional view of the window and the window frame of the integrated keypad according to another embodiment of the present invention.

** Description of the main symbols in the drawings **

10: keypad

11: keyboard

12: ink layer

13: EL device

14: silicone pad

15: lower protrusion

16: through protrusion

20: window frame

21: window tops

22: adhesive layer

23: EL device

30: Windows

The present invention relates to a window-integrated keypad of a wireless terminal.

In general, the type of portable wireless terminal may be classified into a bar type, a flip type, and a folder type terminal according to its appearance.

The bar type terminal is a type in which a keypad (data pad) as a data input means, a display device as a data output means, a talker and a receiver module are mounted in a single housing, and thus the terminal can be easily configured. There is an advantage.

The flip type terminal is configured with a main body, a flip, and a hinge device connecting the main body and the flip. The main body of the flip type terminal is configured in the same manner as the bar type terminal, and in the call waiting mode, the flip can cover the keypad, which is the data input means, to prevent malfunction of the keypad.

The clamshell terminal is composed of a main body, a folder, and a hinge device for rotatably connecting the main body and the folder so that the folder is opened and closed by rotating about the main body. In the state in which the folder is in close contact with the main body, the folder covers the keypad on the main body in a call waiting mode to prevent a malfunction of the keypad. In the call mode, the folder is opened so that a sufficient distance between the talker and the receiver can be secured. There is an advantageous advantage.

1 is a perspective view showing a general wireless terminal.

As shown in FIG. 1, a wireless terminal such as a cellular phone has a liquid crystal display 120 displaying various information required for operation such as a transmission and reception state, and a plurality of keys of a keypad for performing signal generation and various functions. It is composed of a key panel 110 having a hole in which the buttons 130 are fitted.

The keypad has a plurality of key buttons 130 having a printed surface on which numbers or letters are printed, and the key buttons 130 have a structure protruding outside the key panel 110 of the mobile phone. The user checks the number or letter displayed on the printing surface and presses the desired key button 130 to use the mobile phone. A light source made of a light emitting element is provided on the outside of the bottom of the key button 130 so that the printing surface can be checked even at night. When the light is irradiated from the light source, the user can easily recognize the numbers or letters printed on the key button 130 by the backlighting effect.

However, the conventional LED type light emitting keypad used as a light source of the light emitting keypad cannot be manufactured in a thin shape due to the characteristics of the LED, so that the keypad is made relatively thick. In addition, the power consumption according to the LED light emission can be shortened the use time of the battery. In addition, the uniformity of light emission is uneven depending on the arrangement position of the LED, which leads to design difficulties. Accordingly, in order to overcome the limitation of ultra-thinning of the conventional LED type light emitting keypad, there is a demand for the development of a slim type light emitting keypad to which an EL (Electro Luminescence) lamp light emitting method (hereinafter referred to as an 'EL method') is applied.

Meanwhile, a display unit is provided in a portable terminal (hereinafter referred to as a terminal) such as a mobile phone or a PDA, and an LCD (liquid crystal display) is commonly used as such a display unit.

Then, a window for covering and protecting the LCD is installed, that is, a window and a window frame for exposing the LCD to the outside are formed on the terminal, and the LCD is covered and protected from the outside through the window. .

However, in the conventional method of installing a window on the display unit of the terminal, the process of coupling the window to the inner surface of the case so as to be located on the periphery of the opening of the terminal case, and installing a pad to reinforce the strength of the combined window, and In order to prevent foreign objects from penetrating or damaging the surface of the broken window, a complicated process such as installing a protective tape was performed.

In particular, the process of combining the window and the keypad is added, there is a problem that the manufacturing cost and assembly cost increases and the yield is reduced.

On the other hand, there is a problem in that the light emitting device is provided only in the keypad portion, the aesthetics of the window outer portion is relatively low, it is required to provide a separate light emitting device.

The present invention is to solve the above problems, to provide a keypad integrally formed with a window that can reduce the manufacturing cost and assembly cost and increase the yield by eliminating the process of combining the window and the keypad as in the prior art The purpose.

In addition, a light emitting device is provided in the window frame as well as the keypad unit, and an object of the present invention is to provide a window-integrated keypad with increased aesthetics.

The present invention for achieving the above object,

Keypad unit; A window frame integrally formed with the keypad unit; A window formed between the window frames; And an EL device formed under the keypad to emit light.

Further, there is provided a window-integrated keypad of a wireless terminal, further comprising an EL device for emitting light under the window frame.

In addition, the keypad unit and the window frame provides a window-integrated keypad of the wireless terminal, characterized in that integrally manufactured with the same material.

In addition, the keypad unit provides a window-integrated keypad of the wireless terminal, characterized in that it comprises a flat sheet formed integrally with the keys of the outer portion.

The present invention also provides a wireless terminal having the aforementioned window-integrated keypad.

Hereinafter, the present invention will be described in more detail with reference to the drawings and embodiments.

2 is a plan view of a window-integrated keypad and a wireless terminal having the same according to an embodiment of the present invention. As shown, the window-integrated keypad according to an embodiment of the present invention is the keypad unit 10, the window frame 20 formed integrally with the keypad unit, the window 30 formed between the window frame 20, And an EL device (not shown) formed in the lower portion of the keypad portion 10 for emitting light. Wireless terminal according to an embodiment of the present invention is characterized in that it comprises the window-integrated keypad.

First, the keypad unit will be described in detail. The keypad portion can be applied without limitation the keypad portion known in the art, all are included in the present invention.

3A and 3B illustrate an example of a keypad unit. As illustrated, the keypad unit 11 includes a keypad 11, a printed layer 12 formed to display numbers or letters on a portion of the lower portion of the keypad, and silicon formed under the printed layer. And an EL device 13 formed on top of the silicon pad or inside the silicon pad to emit light. The present invention is not limited to the illustrated configuration, but other configurations may be added, and all are included in the present invention.

The key plate 11 is not limited, but as illustrated, the key plate 11 may be made of a transparent flat sheet formed integrally. That is, the key board is made of a flat plate sheet, the keys are formed by printing at the bottom thereof, the keys are integrally formed, and the flat plate sheet without the conventional keys formed to be specially protruded (except the conventional protruding key board from the present invention) In this way, the slimming of the wireless terminal can be realized, and various colors can be realized on the keypad through the printing process. In addition, the keypad may be coated with a protective coating layer (not shown) on at least one of the upper and lower surfaces.

In addition, by forming a dimple (Dimple) process in the key portion of the key plate to be somewhat concave, it is possible to more easily contact with the dome switch located in the lower portion to prevent key operation failure.

The silicon pad 14 has a lower protrusion 15 to apply a signal by pressing a switch of a printed circuit board at a lower portion thereof. A lower portion of the lower protrusion may be coupled to a printed circuit board having a dome switch positioned to correspond to the lower protrusion. The dome switch may be a metal dome spaced apart from the contact terminal on the contact terminal and the contact terminal. It is good to be done.

Therefore, when the keypad of the keypad is pressed by the user, the metal dome of the printed circuit board provided under the specific key is pressed so that the metal dome contacts and contacts the contact terminal.

The structure of the EL device 13 can be applied as long as it is a structure in which an inorganic or organic light-emitting body emits light by applying an electric field, and the following configuration is suitable as an example. That is, the EL device preferably includes an insulating layer, a front electrode layer, a light emitting layer, a dielectric layer, a back electrode layer, and an insulating layer. The front electrode layer, light emitting layer, dielectric layer and back electrode layer form an EL system which is a light emitting structure of the EL device. The EL device 13 is preferably formed by screen printing for slimming.

4 is another example of the keypad portion 10, the key plate 11 is formed with a through hole, the through protrusion 16 is formed on the upper portion of the silicon pad 14, the through protrusion in the through hole (16) is characterized in that the pass through and combined. In particular, the through hole is preferably formed at the boundary of each key. Through this configuration, it is possible to selectively press a specific key more easily, and the click feeling is improved. Further, by forming and combining the through protrusions, the light emitted from the EL layer can be reflected and interfered by the through holes, thereby preventing the formation of the intaglio and allowing the light to be transmitted as it is.

Next, the window and the window frame will be described.

2, the keypad unit and the window frame are integrally manufactured. It is preferable that the keypad is formed integrally with the same material as the substrate, and furthermore, an EL device is further included under the window frame to emit light. The window frame supports the window and forms the exterior of the terminal, and is preferably formed together when forming a keypad of the keypad.

5 is a cross-sectional view showing an example of the window and the window frame, as shown, the upper plate 21 of the window frame is preferably formed integrally with the material of the above-described key board so that the window can be located A hole is formed and the window 30 is located in the hole, and the lower portion of the window frame is not limited, but the EL device 23 is formed to emit light, which makes the appearance more colorful than before, and enhances the aesthetics. The EL device 23 can be bonded with an adhesive 22, or may be formed by printing directly on a keypad. The configuration of the EL device may be dedicated to the above-described configuration, and the description thereof will be omitted. The EL device located below the window frame can be formed so as to be electrically connected to the EL device located below the keypad portion to emit light together.

The window is preferably a transparent material, and a film satisfying a predetermined hardness and strength is suitable. The combination of window and window frame is well known in the art and thereby depends. Although a specific coupling device may be provided and coupled, it is preferable to bond by adhesive or thermocompression for easier manufacturing.

Since the present invention is characterized by a window-integrated keypad, it is possible to electrically connect the EL system located below the window frame and the EL system located below the keypad part in an easy manner. Preferably, the EL system is printed by screen printing on the lower part of the keypad of the keypad unit in which the window frame is integrally formed, but the EL system may be integrated by simultaneously printing the window system as well as the keypad unit.

The present invention also provides a wireless terminal having the aforementioned window integrated keypad. The configuration of the wireless terminal can be applied without limitation the configuration known in the art, it is included in the present invention. The wireless terminal is preferably a type that can be applied to the window-integrated keypad, and particularly preferably a bar-type wireless terminal.

The above embodiments are intended to describe the present invention in detail, and are not intended to limit the present invention, and therefore, modifications, modifications, omissions, etc. that can be applied within the scope of the technical idea of the present invention are defined by the claims. It is included in the scope of the invention.

As such, the present invention provides a window-integrated keypad, which conventionally eliminates the process of combining the window portion and the keypad, thereby reducing the manufacturing cost and the assembly cost and increasing the yield. A light emitting device is provided to increase aesthetics.

Claims (5)

Keypad unit; A window frame integrally formed with the keypad unit; A window formed between the window frames; And And an EL device formed under the keypad to emit light. 2. The window-integrated keypad of a wireless terminal according to claim 1, further comprising an EL device for emitting light under the window frame. The keypad of claim 1, wherein the keypad unit and the window frame are integrally manufactured of the same material. The window-integrated keypad of claim 1, wherein the keypad includes a flat sheet on which outer keys are integrally formed. A wireless terminal having a window-integrated keypad according to any one of claims 1 to 4.

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