KR200214827Y1 - Cellularphone having LCD - Google Patents

Abstract

Disclosed is a folding cell phone equipped with an active two-sided reflection type liquid crystal display device. The clamshell cell phone equipped with the active duplex reflective LCD has a top folder, an upper folder hinged with the active duplex reflective LCD, and a character button and an opening / closing sensor. It is built in a folder and a lower folder, and receives a signal of the open / close detection sensor and consists of a microcomputer for controlling the active double-sided reflection type liquid crystal display device.

Accordingly, the clamshell mobile phone equipped with the active double-sided reflection type liquid crystal display device of the present invention can see the screen normally in both the closed state and the open state with one liquid crystal display device, which reduces the number of parts and reduces the weight and volume of the product. It has the advantage of being able to do it, and it is equipped with the wheel switch which can scroll and select function. It is not only easy to search information and menu selection but also greatly reduce the menu selection buttons of the mobile phone.

Description

Cell phone having an active two-sided reflection type liquid crystal display {Cellularphone having LCD}

The present invention relates to a clamshell mobile phone equipped with an active two-sided reflection type liquid crystal display device, and more particularly, a folder having an active two-sided reflection type liquid crystal display device for viewing the displayed screen from the front and rear of the liquid crystal display device. It's about the type phone.

In general, a liquid crystal display device is a display device that combines a liquid crystal technology and a semiconductor technology that uses the optical properties of liquid crystals whose molecules are changed by an electric field, and is a digital wristwatch, due to low driving voltage, low power consumption, and flatness of the liquid crystal panel. It is widely applied to pagers, mobile phones and laptop computers.

The liquid crystal display is classified into a transmissive display and a reflective display according to a light source.

Transmissive type means that the light emitted from the backlight transmits the transparent electrode of high transmittance and displays information on the panel by using the backlight as a light source. The transmissive liquid crystal display is faint by external light without using a backlight, but can display information, because the layers of TFTs composed of various thin films serve as reflective layers.

Reflective type is a light reflecting plate of aluminum foil attached to the back surface of the back substrate constituting the LCD, and reflects the incident light irradiated to the front of the LCD from the reflecting plate and is used for display. In the twisted nematic (TN) mode and the super twisted nematic (STN) mode, a polarizing plate and a reflecting plate having a checkered surface are stacked on the back substrate. The reflective LCD is widely used because it can utilize the power consumption of the LCD in that it is a non-light emitting type.

However, in the transmissive or reflective liquid crystal display device, the surface to be displayed on the panel is determined so that the screen cannot be viewed from the other side. Therefore, in the case of a clamshell cell phone, it is inconvenient to open the cell phone to view the LCD screen or to install a liquid crystal display device at both the inside and outside of the cell phone.

Accordingly, the present invention is to provide a foldable cellular phone equipped with an active two-sided reflection type liquid crystal display device that can see the displayed screen when all of the liquid crystal display device is enumerated and closed.

1 is a side view showing a foldable cellular phone equipped with an active double-sided reflection type liquid crystal display device according to the present invention.

Figure 2 is a front view showing an open state of a clamshell-type mobile phone equipped with an active two-sided reflection type liquid crystal display according to the present invention.

Figure 3 is a front view showing a closed state of a clamshell-type mobile phone equipped with an active two-sided reflection type liquid crystal display according to the present invention.

Figure 4 is a partial cross-sectional view showing a wheel switch unit of a foldable mobile phone equipped with an active two-sided reflection type liquid crystal display according to the present invention.

Figure 5 is a side view showing a liquid crystal display device of a clamshell mobile phone equipped with an active two-sided reflection type liquid crystal display device according to the present invention.

Figure 6 is a block diagram showing the internal circuit of the foldable mobile phone equipped with an active two-sided reflection type liquid crystal display device according to the present invention.

Figure 7 is a display showing a liquid crystal display device switching screen of a clamshell-type mobile phone equipped with an active two-sided reflection type liquid crystal display device according to the present invention.

* Description of Signs of Main Parts of Drawings *

10: cell phone 11: upper folder

12: active double-sided reflection type liquid crystal display device 13: hinge connection

14: lower folder 15: wheel switch unit

16: button 17: open and close detection sensor

20: wheel 21: index

22: dip switch 25: data display film

26: first shielding film 27: second shielding film

30: Micom

The object of the present invention is an upper folder equipped with an active double-sided reflection type liquid crystal display device to be seen from the front and the rear, a lower folder hinged to the upper folder, a built-in character button and an open / close sensor, and a built-in open / lower sensor in the lower folder. The present invention provides a foldable cellular phone equipped with an active two-sided reflection type liquid crystal display device composed of a microcomputer for controlling the active two-sided reflection type liquid crystal display device by receiving a signal from a sensor.

According to the present invention, an active double-sided reflection type liquid crystal display device has a data display film on which a character is displayed on a central layer, and a first shielding film and a second shielding film which are converted into a transparent or white state according to an electrical signal on the upper and lower portions of the data display film. It has a shielding film.

In addition, the lower folder further includes a wheel switch portion consisting of a rotatable wheel and an index switch that cooperates with the rotation of the wheel and a dip switch pressed by the wheel.

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

1 is a side view showing a clamshell-type mobile phone equipped with a liquid crystal display device according to the present invention, FIG. 2 is a front view showing an open state of a clamshell-type mobile phone equipped with a liquid crystal display device according to the present invention, and FIG. 4 is a partial cross-sectional view showing a wheel switch of a clamshell-type mobile phone equipped with a liquid crystal display device according to the present invention.

As shown in the drawing, the clamshell mobile phone 10 equipped with the active double-sided reflection type liquid crystal display device includes an upper folder 11, an upper folder 11, and a hinged connection 13 in which the active double-sided reflection type liquid crystal display device 12 is mounted. And a lower folder 14 having a button 16 of letters and numbers formed thereon, and a wheel switch unit 15 formed on one side of the lower folder 14 to scroll.

The active double-sided reflection type liquid crystal display 12 of the upper folder 11 is located at the center so that it can be seen from both the front 18 and the rear 19 of the upper folder 11.

As shown in Fig. 5, the active double-sided reflection type liquid crystal display device 12 includes a data display film 25 on which a character is displayed, formed on a central layer, and a first shielding film 26 on top of the display film. The second shielding layer 27 is formed under the display layer 25.

The first shielding film 26 and the second shielding film 27 are liquid crystals that normally exist in a transparent state and are converted to white when a certain electrical signal is transmitted.

Accordingly, in order to be viewed by the user on the upper surface A of the liquid crystal display 12, a character is displayed on the data display layer 25 in the center layer, the first shielding layer 26 is made transparent, and the second shielding layer is white. Keep state Then, the characters of the data display layer 25 may be viewed through the transparent first shielding layer 26, and the second shielding layer 27 may block various light sources of the rear surface B so that the displayed characters may be more clearly seen. do.

On the contrary, in order to be viewed by the user from the rear surface B, the first shielding layer 26 maintains a white state and the second shielding layer 27 has a transparent state. In addition, the addressing technique is used to switch the image by upside down so that the displayed characters appear correctly on the rear surface B. FIG.

In the lower folder 14, the opening and closing detection sensor 17 for detecting the open or closed state of the mobile phone 10 is attached to the opening and closing whether to open or close the microcomputer 30 mounted inside the lower folder 14 The microcomputer 30 controls the first shielding film 26, the second shielding film 27, and the data display film 25.

As shown in FIG. 4, the wheel switch unit 15 is provided with a wheel 20 at one side of the lower folder 14 and coupled to the index 21 through a center or gear connection of the wheel 20. The dip switch 22 is formed at the other end of the wheel 20.

Therefore, when the wheel is rotated, the amount of rotation of the wheel 20 is sensed by a transmission-type small sensor (not shown) to scroll. When the wheel 20 is pressed in the folder direction after scrolling, the dip switch 22 is pressed to select a menu displayed on the LCD screen.

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

1 is a side view showing a folding cell phone equipped with a liquid crystal display device according to the present invention, FIG. 5 is a side view showing a liquid crystal display device of a clamshell mobile phone equipped with a liquid crystal display device according to the present invention, and FIG. FIG. 7 is a block diagram showing an internal circuit of a clamshell phone equipped with a liquid crystal display device, and FIG. 7 is a view showing a switching screen of a liquid crystal display device of a clamshell phone equipped with a liquid crystal display device according to the present invention.

As shown in Figs. 3 and 6, the foldable cellular phone 10 equipped with the active double-sided reflection type liquid crystal display device has a lower folder in a state in which the upper folder 11 is in contact with the lower folder 14, that is, in a closed state. The open / close detection sensor 17 of 14 transmits the closed state to the microcomputer 30. The microcomputer 30 of the liquid crystal display 12 has a first shielding film 26 transparent and a second shielding film 27 white. Send an electrical signal to be in a state.

Therefore, the screen displayed on the data display film 25 can be seen on the front surface 18 of the upper folder 11.

2 and 6, when the upper folder 11 is separated from the lower folder 14, that is, the open state, the opening and closing detection sensor 17 transmits the open state to the microcomputer 30 and the microcomputer Reference numeral 30 denotes an electrical signal such that the first shielding film 26 of the liquid crystal display 12 has a white state and the second shielding film 27 is transparent.

Therefore, as shown in FIG. 7, the screen C when viewing the liquid crystal display 12 from the front surface 18 of the upper folder 11 is visible from the rear surface 19 of the upper folder 11. To D).

In addition, the microcomputer 30 switches the screen D displayed on the data display film 25 to the upside down state so that the user can see the characters correctly on the rear surface 19 of the upper folder 11 (F). )

Accordingly, in the clamshell mobile phone 10, one liquid crystal display device 12 can be used to view characters displayed on the LCD screen in an open state or a closed state, thereby reducing the number of parts compared to a mobile phone equipped with two liquid crystal display devices. And weight and volume of the product.

Preferably, the active double-sided reflection type liquid crystal display device can be variously applied to all ranges in which a liquid crystal display device such as a notebook, a palmtop, a PD, an electronic notebook, as well as a folding cell phone is used.

Then, as shown in FIG. 4, the foldable cellular phone 10 equipped with the active double-sided reflection type liquid crystal display device operates the wheel switch unit 15 mounted on the side surface of the liquid crystal display in the same manner as the wheel mouse of the computer. Simplify information search and menu selection.

That is, when the wheel 20 is rotated, the index 21 is interlocked and the transmissive small sensor (not shown) senses the interlocked amount and scrolls on the screen. Then, when the wheel 20 is pressed, the dip switch 22 is brought into contact with each other to select a menu displayed on the LCD screen.

Therefore, by simply replacing the various buttons 16 for scrolling and selection in the mobile phone 10 through the wheel switch unit 15, information search and menu selection in the mobile phone 10 can be facilitated.

Therefore, the folding mobile phone equipped with the active double-sided reflection type liquid crystal display device of the present invention can see the screen normally in both the closed state and the open state with one liquid crystal display device, which reduces the number of parts and reduces the weight and volume of the product. There is an advantage to this.

In addition, equipped with a wheel switch that allows scrolling and selecting functions, it is easy to search for information and select menus, and can greatly reduce the menu selection buttons of the mobile phone.

The present invention can be variously modified by those skilled in the art without departing from the scope of the claims claimed in the utility model registration claims, the technical protection scope of the present invention is the specific preferred embodiment described above It is not limited to the example.

Claims (3)

An upper folder mounted with active double-sided reflection type liquid crystal display devices visible from the front and the rear; A lower folder hinged to the upper folder and a built-in character button and an open / close detection sensor; And, A clamshell mobile phone equipped with an active double-sided reflection type liquid crystal display device, which is built in the lower folder and configured to receive a signal from the open / close detection sensor to control the active double-sided reflection type liquid crystal display device. The liquid crystal display of claim 1, wherein the active double-sided reflection type liquid crystal display includes a data display layer on which a character is displayed on a central layer, and a first shielding layer on the upper and lower portions of the data display layer to convert into a transparent or white state according to an electrical signal. And a second shielding film, and a clamshell cell phone equipped with an active double-sided reflection type liquid crystal display device. The active double-sided reflection type liquid crystal display of claim 1, wherein the lower folder further includes a wheel switch configured at a side of the rotatable wheel, an index linked with rotation of the wheel, and a dip switch pressed by pressing the wheel. Clamshell mobile phone.