JP4108397B2 - Display device for mobile phone and mobile phone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display device used in a mobile phone, and more particularly to a mobile phone display device that can use a specified area on a display display screen as a mirror and a mobile phone equipped with the display device.
[0002]
[Prior art]
At present, mobile phones (in this application, referred to as “mobile phones” including various mobile communication devices having display devices such as mobile communication data processing devices and PHS phones) have become widespread for people of all ages. Mobile phones are no longer just a telephone conversation tool, but are also used as convenient and effective means for acquiring various information, exchanging e-mails, games, purchasing goods, etc. by connecting to the Internet etc. Has reached the point.
[0003]
Furthermore, some recent mobile phones are equipped with a CCD camera and have a function capable of transmitting a caller's face image or the like to a mobile phone of a call destination, and are widely used.
[0004]
As described above, the cellular phone is an essential portable item today, and is used in any place that can be carried and can communicate through radio waves regardless of the place of use. Since the mobile phone responds immediately when there is a call (when there is an incoming call), the mobile phone is carried and used in a pocket where the mobile phone can be easily taken out or in a place where the handbag can be easily taken out.
[0005]
On the other hand, an indispensable portable item along with a mobile phone, particularly for young women, is a mirror. The mirror frequently checks makeup and hairstyles. For this reason, it is necessary to carry the mirror in a place where it can be easily taken out.
[0006]
[Problems to be solved by the invention]
For this reason, the mobile phone is stored in a pocket or a bag, and the mirror is also carried in a handbag or the like. The mobile phone is stored in a place where it can be taken out at any time so that it can be handled as soon as there is an incoming call, and it is possible to easily check makeup and hairstyle using the mobile phone when using the mobile phone. As a result, the convenience of mobile phones will be further improved.
[0007]
For this reason, even if the mirror is attached to the back side of the telephone, etc., the total weight of the mobile phone becomes heavy due to the weight of the mirror, and the performance that represents the downsizing and weight reduction required for recent mobile phones. It will be greatly impaired.
[0008]
For this reason, the present invention provides a display device for a mobile phone that can use an arbitrary selection area on a display display screen as a mirror (mirror), and displays an image captured by a CCD camera, an image captured on a mirror, and the like. It is an object of the present invention to provide a mobile phone having a function of transmitting synthesized image data.
[0009]
[Means for Solving the Problems]
For this reason, the present invention provides a liquid crystal display device for a mobile phone comprising a light transmissive panel, a color filter, a transparent electrode, a liquid crystal layer, a polarizing plate, and a backlight that form the surface of a display screen. Between the backlights, when the backlight is turned off, it reflects the light incident from the surface side of the light transmission panel, and when the backlight is turned on, it transmits the light of the backlight and is translucent. A mirror layer, disposed over the entire display area between the translucent mirror layer and the backlight, enabling light transmission between the translucent mirror layer and the backlight in any selected area on the display screen, or An aperture layer that can be controlled to shut off, and when the backlight is turned off, the entire area of the display screen becomes a mirror, When the creite is lit and an image is displayed, the selected area becomes a mirror by the light blocking control in the aperture layer, and an image is displayed in another area, and the entire display screen is controlled by the light transmission control in the aperture layer. It is an object of the present invention to provide a mobile phone display device that displays an image in an area.
[0010]
Here, the selection area is configured by designating one selected shape among a plurality of preset shapes, a scale of the selected shape, and an arrangement position thereof on the display screen. So when the mobile phone is turned off, the entire area of the display screen of the mobile phone becomes a mirror, and even if the mobile phone is turned on, any selection on the display screen Only the selected area becomes a mirror to display an image in another area, or display an image in the entire area of the display screen.
[0011]
Here, the function as a mirror is ensured by applying a signal for making the liquid crystal layer transparent at the same time that the backlight is turned off. Since the power consumption for applying a signal for making the liquid crystal layer transparent is very small, the battery consumption is not increased for this purpose.
[0012]
Here, the translucent mirror layer is formed by applying a translucent material to the surface of the transparent mirror substrate and the mirror substrate, or by attaching a translucent film to the surface of the transparent mirror substrate and the mirror substrate. Is formed.
[0013]
However, more preferably, the translucent mirror layer has a transparent mirror substrate, and the surface of the mirror substrate has vertical and horizontal fine lines having the same number of metallic luster as the number of dot intervals of the liquid crystal. Is embedded.
[0014]
Furthermore, the aperture layer is constituted by liquid crystal shutter means for blocking light transmission by applying a voltage in the selected region.
[0015]
Further, the aperture layer is composed of the liquid crystal shutter means and an aperture signal generating circuit for operating the liquid crystal shutter means in the selected region.
[0016]
Then, when the liquid crystal shutter means blocks light transmission in the selection area, a signal for making the liquid crystal layer in the selection area transparent is applied to the liquid crystal layer.
[0017]
The present invention further relates to a mobile phone equipped with a liquid crystal display device, wherein the liquid crystal display device includes a light transmission panel forming a surface of a display screen, a color filter, a transparent electrode, a liquid crystal layer, and a polarizing plate. And a backlight, and further, between the polarizing plate and the backlight, reflects light incident from the surface side of the light transmission panel when the backlight is turned off, and reflects the light when the backlight is turned on. A translucent mirror layer that transmits light and enables image display; and a translucent mirror layer disposed over the entire display area between the translucent mirror layer and the backlight; An aperture layer that can be controlled to enable or block transmission of light between a mirror layer and the backlight, and when the backlight is turned off When the entire area of the display screen is a mirror and the backlight is turned on and an image is displayed, the selected area becomes a mirror by the light blocking control in the aperture layer, and an image is displayed in another area. It is an object of the present invention to provide a mobile phone characterized in that an image is displayed in the entire area of the display screen by controlling light transmission in an aperture layer.
[0018]
The mobile phone further includes a CCD camera. The CCD camera is disposed at a position facing the liquid crystal display device of the mobile phone main body, and the arm supporting the CCD camera is rotated. It is mounted so that the angle of view can be freely changed.
[0019]
As a result, the display image displayed on the liquid crystal display device and the image reflected on the mirror with the selected region as a mirror by the light blocking control in the aperture layer are captured by the CCD camera. Configured.
[0020]
The image processing apparatus further includes an image data storage unit that stores image data picked up by the CCD camera, and a communication unit that transmits the image data to a mobile phone of a call destination.
[0021]
In addition, the mobile phone can download image data from the outside via a communication network based on the TCP / IP protocol and display the image data on the liquid crystal display device.
[0022]
When the power switch of the mobile phone is turned off, the function of the mirror in the selected region is ensured by applying a signal for making the liquid crystal layer transparent at the same time as turning off the liquid crystal backlight. ing.
[0023]
By the way, in order to facilitate the selection operation of the selection region, one shape selected from a plurality of preset shapes on the display screen, the scale of the selected shape, and the arrangement thereof The position is performed by the cursor means.
[0024]
Then, when the backlight is turned on and an image is displayed, a mirror mode in which only the selected region becomes a mirror by the light blocking control in the aperture layer to display an image in another region, or the aperture layer And a mode selection means for selecting a display mode for displaying an image in the entire area of the display screen by light transmission control.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a mobile phone display device and a mobile phone equipped with the display device according to the present invention will be described below in detail with reference to the drawings.
[0026]
A mobile phone 1 shown in FIG. 1 shows a foldable mobile phone 1, (A) is a front view of the entire mobile phone 1 according to the present invention, and shows a state in which the mobile phone 1 is opened, (B) These show the side view of the whole mobile telephone 1, and have shown the state closed substantially half. The cellular phone 1 is supported by a free arm 9 in which a display device 2 provided with a liquid crystal display 7, an input operation unit 4 including a function key and a numeric keypad, a main body 3, an antenna 6, and a change in imaging angle can be rotated. And a camera unit 5 comprising a CCD (not shown).
[0027]
FIG. 2 is a block diagram showing the configuration of the mobile phone 1 in FIG. 1 and 2, a mobile phone 1 according to the present invention is a cellular mobile phone system (PDC method / PHS method), and has a camera unit 5 for imaging a screen displayed on a display device 2. ing.
[0028]
The configuration of the mobile phone 1 is known as a PDC system or a PHS system. For example, a radio transmission / reception unit 31 including a frequency switching synthesizer, a received electric field strength (RSSI) detection unit, a modulation / demodulation unit 32, a time division / demultiplexing unit 33, and a codec (encoding / decoding) unit 34 , A transmitting microphone 35, a receiving speaker 36, a microprocessor 38, a memory 40, a display device 2 such as an incoming call display light emitting diode or a liquid crystal display 7, and an input operation unit 4 including function keys, a numeric keypad, and the like. The camera unit 5 that captures an image of an object and the I / F unit 39 that enables connection with an external device are included.
[0029]
Here, the liquid crystal display device 2 will be described. As a display device, a device using a light emitting diode (LED) and a device using a liquid crystal (LCD) are widely used for consumer or industrial electronic devices. A device (LED) using a light emitting diode is a pn junction type diode whose basic element is made of a compound semiconductor single crystal such as GaP, GaAsP, and GaAIAs, and emits light when a forward voltage is applied. The wavelength of the emitted light is determined by the characteristics of the material, and an LED that emits visible light is used as a display. As colored light, red, orange, yellow and yellowish green are mass-produced. Generally, the light emitting portion of an LED is a minute pn junction surface of about 0.3 mm square, but is classified into two types, a monolithic display and a hybrid display, due to the difference in the construction method. The former is for small displays and the latter is for large displays.
[0030]
On the other hand, the liquid crystal used in the liquid crystal display is composed of liquid rod-like organic molecules, and is classified into three types, magnetic, cholesteric, and smectic, depending on the molecular arrangement. Since all of them have a regular arrangement, they exhibit anisotropy in electrical, magnetic, optical and other physical properties. Of these, nematic liquid crystals are mainly used in liquid crystal display devices (LCD), and electrical anisotropy such as dielectric constant and conductivity and optical anisotropy such as refractive index are used. There are various types of LCD depending on the type of liquid crystal and the optical effect to be used. Typical examples include a dynamic scattering method, a birefringence method, a twisted matic method, a guest-host method, and a ferroelectric liquid crystal method. Of these, the twisted matic (TN) method is currently widely used. This is based on the following operation principle.
[0031]
That is, in the off state, the molecular orientation of the liquid crystal is twisted by 90 °, so that the incident polarization plane rotates by 90 ° along the twist and passes through the polarizer. That is bright. When a voltage is applied to this, the twist is released, the molecules rearrange in the direction of the electric field, and the plane of polarization does not rotate, so that it cannot pass through the polarizer. That is dark. Therefore, the dark state and the bright state can be switched depending on the presence or absence of voltage.
[0032]
The LCD needs to be driven with an alternating voltage in order to prevent deterioration of the liquid crystal due to an electrochemical reaction. A simple display uses a static drive method in which an AC voltage is directly applied to the display electrodes. On the other hand, in a multi-digit number display or the like, a multiplex driving method is used in which several display electrodes are collectively driven in a time division manner in order to reduce the number of lead wires. A large-scale multiplex drive is a matrix LCD.
[0033]
This LCD has a plurality of scanning line electrodes, X and Y transparent electrodes, sequentially applying scanning pulses to the X electrodes, and simultaneously applying signal voltage pulses from the Y electrodes according to the display pattern of the lines. This is done by applying.
[0034]
In addition, in the liquid crystal color display, only the birefringence method (ECB) has a multi-color display function in the LCD itself. However, this method is difficult to apply to general display devices because the display color changes sensitively depending on the cell gap, temperature, voltage, and the like. On the other hand, a full-color system is used by adding fine red, green and blue filters on the inner surface of a monochrome display LCD. This is formed on each pixel of a normal matrix LCD or active matrix LCD using a photo process, and the three primary color dots can be controlled independently. Although this method is currently used in many electronic devices, light absorption by a polarizer and a color filter is large, and the transmittance of the panel is as low as 5 to 7%, so that backlighting is necessary.
[0035]
Liquid crystals having such a display function have been put into practical use and widely used as displays for wristwatches, electronic desk calculators, character graphic displays, cellular phones 1 and televisions. The liquid crystal display device includes a reflection type that reflects light incident from the entire surface of the liquid crystal panel 20 using a reflector and a transmission type that allows light to be incident from the back. In the case of the transmissive type, there are a method in which ambient light is incident and a method in which a dedicated light source (backlight, mainly a fluorescent tube) is used. The reflection system is used for wristwatches and calculators, and the transmission type is used for display devices such as televisions, mobile phones, and PCs. The liquid crystal is matrix driven, and a liquid crystal matrix panel having a predetermined number of dots is used for character figures such as 640 × 200 dots and 640 × 400 dots and for 360 × 240 dots television. The liquid crystal matrix panel includes an active matrix system including a switching semiconductor element and a memory element (TFT) for storing signals in the panel, and a passive matrix system not including this. In the passive matrix method, the manufacturing process is relatively simple, but it is difficult to obtain a large contrast. In the active matrix method, the manufacturing process is complicated, but a large contrast ratio can be obtained.
[0036]
When no voltage is applied, the light incident on the liquid crystal panel passes through the polarizing plate, so that only light that vibrates in one direction passes and rotates 90 ° in the liquid crystal. When a sufficiently large voltage is applied, the motor does not rotate. When the two polarizing plates are orthogonal to each other, the light is bright when no voltage is applied, and dark when the voltage is applied. This type is called normally open. When two polarizing plates are made parallel, they are dark when no voltage is applied, and bright when a voltage is applied. This type is called normally closed.
[0037]
In order to display an image clearly, a normally open configuration is suitable. In view of the above, an active matrix type liquid crystal panel is used as a liquid crystal display of a cellular phone because of the brightness and precision of display.
[0038]
Here, the liquid crystal display device 2 for a mobile phone of the present invention using the above-described liquid crystal panel will be described. The liquid crystal display device 2 for a mobile phone includes a mobile phone casing and a liquid crystal panel 20 disposed in the casing.
[0039]
FIG. 3 shows the configuration of the liquid crystal panel 20. The liquid crystal panel 20 includes a polarizing plate 21, a glass substrate 22, a color filter (GRB) 23, a transparent electrode 24, a liquid crystal 25, a glass substrate 22, a polarizing plate 21, and a semitransparent from the front side to the back side. A mirror layer 26, an aperture layer 27, and a backlight layer 28 are provided. In the translucent mirror 27, as shown in FIG. 4, thin metallic luster (for example, silver) lines 46 are embedded on a transparent substrate 45 serving as a mirror base at intervals substantially the same as the intervals of the liquid crystal 25. .
[0040]
Here, a signal for making the liquid crystal layer 25 transparent is applied to the liquid crystal layer 25 at the same time when the backlight 28 is turned off.
[0041]
Moreover, the translucent mirror 26 is formed by applying a translucent material to the surface of the transparent mirror substrate and the mirror substrate as a first form. Further, as a second form of the semi-transparent mirror 26, a semi-transparent film may be attached to a surface of the transparent mirror substrate and the mirror substrate.
[0042]
However, preferably, the translucent mirror 26 has a transparent mirror substrate, and on the surface of the mirror substrate, vertical and horizontal thin lines having the same number of metallic luster as the number of dot intervals of the liquid crystal are provided. Embedded and formed.
[0043]
In FIG. 4, dotted arrows Z indicate that a line 46 having metallic luster embedded vertically and horizontally is embedded on the entire surface of the substrate 45. When the backlight 28 is turned on, light enters the liquid crystal 25 from between the thin metallic gloss lines 46. The surface of the liquid crystal panel 20 is brightened by the incident light, and an image of the applied liquid crystal 25 can be seen.
[0044]
When the backlight 28 is turned off, the MPU 38 of the mobile phone body 2 transmits a transparent signal for making the liquid crystal 25 transparent to the electrode 24 to make the liquid crystal transparent. The light incident on the liquid crystal panel 20 is transmitted through the polarizing plate 21 and the liquid crystal 25 to irradiate the thin metallic gloss line 46 embedded in the semitransparent mirror 26, and the reflected light reflected on the metallic gloss line 46 and the glass substrate. 21 has a mirror function.
[0045]
With the above configuration, the display device 2 of the present invention can maintain the following two states (mirror mode and display mode).
(1) The mirror mode is a state in which the backlight 28 is turned off and the liquid crystal layer 25 is transparent.
(2) The display mode is a state in which the backlight 28 is turned on and an image is displayed on the layer of the liquid crystal 25.
[0046]
As a result, the liquid crystal panel 20 functions as the display device 2 that can display the mirror mode and the display mode image with a simple operation that simply designates turning on and off of the backlight 28, and designates turning off the backlight. The liquid crystal display 7 can be used as a mirror with a simple operation. At this time, the entire area of the liquid crystal shutter base 50 of the aperture layer 27 is transparent.
[0047]
Further, in the present invention, an arbitrary selection area on the display screen is made a mirror by controlling the transmission of light from the backlight 28 by the aperture layer 27. As shown in FIG. 5, the aperture layer 27 includes a liquid crystal shutter base 50 whose transmission of light is controlled by an applied signal, and an aperture signal generation circuit 41. The liquid crystal shutter base 50 has substantially the same configuration as the liquid crystal panel 20 described above. By applying an application signal to the liquid crystal of the liquid crystal shutter base 50, the applied liquid crystal blocks light from the backlight 28. It has the function of transmitting light when the application is turned off. The aperture layer 27 includes an aperture signal generation circuit 41 that generates an aperture signal based on a plurality of preset patterns (for example, a circle). The aperture signal generation circuit 41 is connected to the MPU 38 of the mobile phone body 3.
[0048]
As described above, the aperture layer 27 has the same function as the liquid crystal shutter, generates an aperture signal based on a plurality of preset patterns (for example, a circle), and controls the liquid crystal shutter in a predetermined region. The light from the backlight 28 is transmitted and blocked by opening and closing the shutter.
[0049]
Here, the configuration of the aperture layer 27 will be described together with the operation. A plurality of preset patterns are stored in the MPU 38, and a pattern signal selected by selecting a display item such as a pattern number or name displayed on the display 7 or selected by input from the keyboard 4 is displayed. It is transmitted to the aperture signal generation circuit 41.
[0050]
An aperture signal to be applied in a predetermined shape from the aperture signal generation circuit 41 is transmitted to the liquid crystal shutter base 50 to form an opaque region where light of the predetermined shape is blocked. The light of the backlight 28 is allowed to pass through transparent portions other than the selected area 52 (the area where light is blocked) of the liquid crystal shutter base 50 having a predetermined shape. On the display 7, a normal image is displayed in a portion through which light passes, and the selection area 52 where the light of the backlight 28 is blocked becomes a mirror surface as in the state where the backlight 28 is turned off. At this time, the liquid crystal is simultaneously applied in a predetermined shape by the aperture signal in order to make the aperture region (selection region 52) of the liquid crystal transparent.
[0051]
Thereby, it becomes possible to make the surface of the display 7 into a specular region in a predetermined shape, and the surface other than the specular region functions as a normal display 7. Therefore, since the mirror and the transmitted image can be displayed individually or simultaneously on the display 7, try to superimpose the transmitted image and your face reflected in the mirror. I can do it.
[0052]
By setting the aperture area as the entire display screen area, functions similar to the mirror mode and the display mode by turning on and off the backlight can be implemented.
[0053]
Next, the setting of the shape and size position of the aperture area (selection area 52) on the liquid crystal display 7 will be described.
[0054]
As described above, in the present liquid crystal display device, an image can be displayed by arbitrarily selecting a selection area 52 having a shape and size that are set and stored in advance (hereinafter referred to as an aperture area 52 as appropriate). Is possible. Therefore, in addition to the function of selecting the stored shape described above, the aperture region 52 having a predetermined shape and size can be freely formed on the liquid crystal display 7.
[0055]
The MPU 38 stores a program for setting the aperture area 52. The program includes the setting of the input key 4 for inputting data for setting the aperture area. The aperture area setting signal input by the input key 4 is transmitted to the aperture setting circuit 41 by the MPU 38, and the aperture setting circuit 41 applies the liquid crystal shutter base 50 based on the transmitted signal to form the aperture area 52.
[0056]
Next, a setting operation example of the aperture area 52 will be described.
[0057]
FIG. 6 shows an example of the aperture area setting screen of the liquid crystal display 7.
First, the screen display on the display 7 of the mobile phone is set to the screen for setting the selection area 52.
[0058]
A shape (for example, an ellipse or a star) is selected from the shape list displayed on the shape selection screen. The plurality of shape data are stored in advance in the mobile phone. It is also possible to designate a shape point and move the point while pressing a movement key to form a shape. Next, an instruction to enlarge or reduce the formed shape is given to set the size of the aperture area formed on the display screen. For example, the size of the currently displayed shape is set by specifying% (50%, 100%, 120%, etc.) displayed on the display.
[0059]
Finally, the position of the aperture area formed on the display screen on the display is set. Designates the position of the screen displayed on the display screen (for example, upper right, upper left, lower right, lower left, center, center right, center left, etc.). With this operation, the shape, size, and display position of the aperture area can be freely set on the display screen.
[0060]
Further, in the present invention, as described above, the mobile phone 1 is a CCD in which the superimposed image of the image reflected in the mirror displayed on the display 7 and the transmitted image is installed in the mobile phone 1. The image is taken by the camera 5, and the taken image is taken into the memory 40 of the mobile phone 1 as digital image data.
[0061]
FIG. 7 shows a state in which the CCD camera 5 captures an image displayed on a mirror surface of the display, for example, the display 7 on which both the user's face and the transmitted image are displayed. As shown in FIG. 7, the mobile phone 1 is foldable on the display device 2 side and the main body side 3, and the display device 2 side is bent at an angle at which a face can be reflected on the mirror surface of the display 7. A small camera 5 connected to the main body is attached to an end portion of the main body of the mobile phone 1 facing the liquid crystal display 7. The CCD camera 5 includes a lens 8, a CCD image sensor (not shown) that converts an image captured by the lens 8 into a digital image, and a substrate that transmits digital image data. This CCD camera 5 is known and will not be described in detail.
[0062]
The CCD camera 5 is rotatably attached to the main body 3 of the mobile phone 1 and is configured to be supported by a free arm 9 provided on the main body so that the angle of view can be freely set. By rotating and adjusting the camera position to an angle at which the image reflected on the mirror surface of the display 7 and the transmitted and displayed image appear to be in an optimum state, both images can be taken clearly. Since the image plane displayed by the liquid crystal and the image reflected on the mirror have different focal lengths, the lens 8 of the CCD camera 5 has a deep focal length function so that the two images can be taken within the same focal length. It is comprised with the lens 8 which has these. Further, when the cellular phone is folded for storage after the communication is completed, the camera 5 is configured to be stored in the main body 3 by rotating in the direction opposite to that during camera photographing.
[0063]
The captured image data can be transmitted / received as transmission / reception data by a normal mobile phone. As a result, for example, the captured image data can be transmitted to the PC via mail and the image can be printed.
[0064]
As a result, the CCD camera 5 is rotated so that the camera is directed in the direction in which the user's face is imaged, and the user's face is imaged. At this time, the area where the user's face is displayed is the aperture area in which the area of the image to be inserted is set by the aperture signal described above, and corresponds to the aperture area set from the display screen on which the transmitted image is displayed. A display area to be cut is cut out, and an image of, for example, one's face taken with a camera is inserted into the cut out area. The transmitted image is displayed outside the area controlled by the aperture signal.
[0065]
Then, the user's face is superimposed on the predetermined area. As a result, the created image is transmitted to an external device such as a PC, and the PC can generate, for example, a photo-like photograph and print it with a printer.
[0066]
Furthermore, in this embodiment, the problem of the depth of focus of the lens 8 that occurs when the CCD camera 5 captures the image displayed on the display 7 and the image reflected in the mirror described in the previous embodiment is solved. Is done. Therefore, the image quality of the superimpose screen transmitted to a PC or the like is improved. However, in order to see the superimposed image by itself, the image having the configuration described in the second embodiment is also clear and excellent. Even when the liquid crystal display is used as a mirror, a clear image can be seen. It is possible to generate image data for transmitting the superimposed image to an external device such as a PC.
[0067]
【The invention's effect】
As described above in detail, the display device according to the present invention is a liquid crystal display for a mobile phone comprising a light transmissive panel, a color filter, a transparent electrode, a liquid crystal layer, a polarizing plate and a backlight that form the surface of the display screen. In the apparatus, between the polarizing plate and the backlight, the light incident from the surface side of the light transmission panel is reflected when the backlight is turned off, and the light of the backlight is transmitted when the backlight is turned on. A translucent mirror layer that enables image display, and is disposed over the entire display area between the translucent mirror layer and the backlight, and between the translucent mirror layer and the backlight in any selected area on the display screen An aperture layer that can be controlled to enable or block light transmission, and when the backlight is extinguished, When the entire area of the display screen is a mirror and the backlight is turned on and an image is displayed, the selected area becomes a mirror by displaying light in the aperture layer and the image is displayed in another area. An image is displayed in the entire area of the display screen by controlling light transmission in the layer.
[0068]
Here, the selection area is configured by designating one selected shape among a plurality of preset shapes, a scale of the selected shape, and an arrangement position thereof on the display screen. So when the mobile phone is turned off, the entire area of the display screen of the mobile phone becomes a mirror, and even if the mobile phone is turned on, any selection on the display screen Only the selected area becomes a mirror to display an image in another area, or to display an image in the entire area of the display screen.
[Brief description of the drawings]
FIG. 1 shows an overall view of a mobile phone,
(A) shows a front view of the entire mobile phone opened,
(B) shows a side view of the cellular phone shown in FIG.
FIG. 2 shows a block diagram of a configuration of a mobile phone.
FIG. 3 shows a configuration of a liquid crystal panel according to the present invention.
FIG. 4 shows a configuration of a translucent mirror according to the present invention.
FIG. 5 shows a configuration of an aperture layer according to the present invention.
FIG. 6 shows an example of an aperture area setting screen according to the present invention.
FIG. 7 shows a state in which a liquid crystal display of a mobile phone according to the present invention is imaged with a camera.
[Explanation of symbols]
1 Mobile phone
2 Liquid crystal display device
3 Body
4 Input operation section
5 Camera
6 Antenna
7 Liquid crystal display
8 Lens
9 Free Arm
21 Polarizing plate
22 Glass substrate
26 translucent mirror
27 Aperture layer
28 Backlight
41 Signal generation circuit for aperture
46 Line with thin metallic luster
50 LCD shutter base
52 Selection area (Aperture area)

Claims (18)

In a liquid crystal display device for a mobile phone composed of a light transmissive panel, a color filter, a transparent electrode, a liquid crystal layer, a polarizing plate and a backlight forming the surface of the display screen,
Between the polarizing plate and the backlight, when the backlight is turned off, it reflects light incident from the surface side of the light transmission panel, and when the backlight is turned on, the light from the backlight is transmitted to display an image. A translucent mirror layer to enable,
Control is provided over the entire display area between the semi-transparent mirror layer and the backlight, and enables or blocks light transmission between the semi-transparent mirror layer and the backlight in any selected area on the display screen. A possible aperture layer, and
When the backlight is turned off, the entire area of the display screen becomes a mirror,
When the backlight is turned on and an image is displayed, the selected region becomes a mirror by the light blocking control in the aperture layer and the image is displayed in another region, and the display is performed by the light transmission control in the aperture layer. A display device for a mobile phone, characterized in that an image is displayed in the entire screen area. The selection area is set on the display screen by designating a selected one of a plurality of preset shapes, a scale of the selected shape, and an arrangement position thereof. The display device for a mobile phone according to claim 1. 3. The display device for a mobile phone according to claim 1, wherein a signal for making the liquid crystal layer transparent is applied to the liquid crystal layer at the same time when the backlight is turned off. The mobile phone display device according to claim 1 or 2, wherein the translucent mirror layer is formed by applying a translucent material to a transparent mirror substrate and the surface of the mirror substrate. The mobile phone display device according to claim 1 or 2, wherein the translucent mirror layer is formed by pasting a transparent mirror substrate and a translucent film on a surface of the mirror substrate. The semi-transparent mirror layer has a transparent mirror substrate, and on the surface of the mirror substrate, vertical and horizontal fine lines having the same number of metallic luster as the number of dot intervals of the liquid crystal are embedded. The display device for a mobile phone according to claim 1 or 2. 3. The display device for a mobile phone according to claim 2, wherein the aperture layer is configured by liquid crystal shutter means for blocking light transmission by applying a voltage in the selected region. 8. The mobile phone display device according to claim 7, wherein the aperture layer includes the liquid crystal shutter means and an aperture signal generation circuit for operating the liquid crystal shutter means in the selected region. . The liquid crystal layer is applied with a signal for making the liquid crystal layer transparent in the selection area when the liquid crystal shutter means blocks light transmission in the selection area. Item 9. The mobile phone display device according to Item 8. A mobile phone equipped with a liquid crystal display device,
The liquid crystal display device includes:
A light transmissive panel that forms the surface of the display screen, a color filter, a transparent electrode, a liquid crystal layer, a polarizing plate, and a backlight;
Between the polarizing plate and the backlight, when the backlight is turned off, it reflects light incident from the surface side of the light transmission panel, and when the backlight is turned on, the light from the backlight is transmitted to display an image. A translucent mirror layer to enable,
Control is provided over the entire display area between the semi-transparent mirror layer and the backlight, and enables or blocks light transmission between the semi-transparent mirror layer and the backlight in any selected area on the display screen. A possible aperture layer, and
When the backlight is turned off, the entire area of the display screen becomes a mirror,
When the backlight is turned on and an image is displayed, the selected region becomes a mirror by the light blocking control in the aperture layer and the image is displayed in another region, and the display is performed by the light transmission control in the aperture layer. A cellular phone characterized by displaying an image in the entire screen area. The mobile phone is further equipped with a CCD camera,
The CCD camera is disposed at a position facing the liquid crystal display device of the mobile phone body, and is attached so that the angle of view can be freely changed as the arm supporting the CCD camera rotates. The mobile phone according to claim 10. The display image displayed on the liquid crystal display device and the image reflected on the mirror with the selected region as a mirror by the light blocking control in the aperture layer are configured to be captured by the CCD camera. The mobile phone according to claim 11. Image data storage means for storing image data captured by the CCD camera;
A communication means for transmitting the image data to a mobile phone of a call destination;
The mobile phone according to claim 12, further comprising: The mobile phone according to claim 13, wherein the mobile phone downloads image data from the outside via a communication network based on a TCP / IP protocol and displays the image data on the liquid crystal display device. 11. The mobile phone according to claim 10, wherein when the power switch of the mobile phone is turned off, a signal for making the liquid crystal layer transparent is applied simultaneously with turning off the liquid crystal backlight. . The selection area is set on the display screen by designating a selected one of a plurality of preset shapes, a scale of the selected shape, and an arrangement position thereof. The mobile phone according to claim 10. The cellular phone according to claim 16, further comprising cursor means for selecting the plurality of preset shapes, selecting the scale, and designating the arrangement position. When the backlight is turned on and an image is displayed, the light is controlled in the aperture layer so that only the selected region becomes a mirror to display an image in another region, or the light in the aperture layer is displayed. 18. The mobile phone according to claim 17, further comprising mode selection means for selecting a display mode in which an image is displayed in the entire area of the display screen by transmission control.

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