WO2005053285A1

WO2005053285A1 - A handset with the double color display screen

Info

Publication number: WO2005053285A1
Application number: PCT/CN2004/000299
Authority: WO
Inventors: Wei Lu; Junling Liao; Guangsheng Huang; Jun Yang
Original assignee: Hui Zhou Tcl Mobile Communication Co., Ltd.
Priority date: 2003-11-27
Filing date: 2004-03-31
Publication date: 2005-06-09

Abstract

The invention discloses a handset with the double color display screen, which includes the main body, the flip cover connected to the main body, the circuit board mounted in the main body, and the LCD electrically connected to the said circuit board. The LCD mounted on the main body includes the first liquid crystal display port representative of the main display screen and the secondary liquid crystal display port representative of the secondary display screen. The liquid crystal display screen at least one of the first liquid crystal display port and the secondary liquid crystal display port is constructed by stacking component members one on the top of another, in the order of LCD, the color picture, the light guide plate. The handset with the double color display screen herein can not only display the color images very well, but also have many virtues, such as simple construction, convenient processing, low expense, low power consume and colorful displaying effect.

Description

TECHNICAL FIELD

The present invention relates to a dual-color screen mobile phone, and more particularly to a dual-color screen mobile phone equipped with a beautiful color liquid crystal display. Wherein, "beautiful color" means a beautiful color pattern or picture. Background technique

Since the flip action of a flip-type mobile phone with a primary screen and a secondary screen can give people a sense of aristocracy, and color-screen mobile phones can also meet people's needs for multimedia business, therefore, flip-type mobile phones with primary and secondary screens that are color screens will be more popular Consumers love it. However, since existing color screen mobile phones generally need to use a color liquid crystal display (ie, a TFT liquid crystal display, commonly known as "true color") to produce, and the price of a color liquid crystal display is much more expensive than a non-color display. For example, the market price of a 1.5-inch black and white LCD display is $ 3, while the market price of a color LCD display of the same size is $ 14. Therefore, the cost and market price of color screen mobile phones are much higher than ordinary mobile phones. If the primary and secondary screens use color LCD screens, the price of clamshell phones will be even higher, making consumers discourage. In addition, since the secondary screen only serves to decorate the mobile phone, it is obvious that the color LCD is not cost-effective. In order to reduce costs, the secondary screen is often made smaller, which may affect the aesthetics of the mobile phone. In addition, color screen mobile phones with TFT liquid crystal display screens are used for the main and secondary screens. Because each pixel on the screen is controlled by an independent transistor, a large number of transistors are used, which makes this flip-type color screen Not only are mobile phones costly and expensive, they also consume a lot of power and weight. Summary of the invention

In order to solve the above problems, the present invention provides a dual-color screen mobile phone or a flip-type color screen mobile phone equipped with a beautiful color liquid crystal display. The dual color screen mobile phone of the present invention is different from a color screen mobile phone using a TFT liquid crystal display, but adopts bright color pictures and black and white liquid on one or two of its color screens. The beautiful color LCD display combined with the crystal display screen replaces the existing black and white LCD display and true color LCD display, and cooperates with the backlight and light guide plate to achieve the color display effect. The dual-color mobile phone provided by the present invention can not only display color images well, has low cost, simple structure, convenient processing, but also has small size, light weight, and low energy consumption. The dual-color screen mobile phone of the present invention can make the main screen and the auxiliary screen larger at the same time at low cost, so as to meet people's needs for the aesthetics of the mobile phone.

In order to achieve the object of the present invention, the technical solution of the present invention is implemented as follows: A dual color screen mobile phone includes: a body, a liquid crystal display installed on the body, and a circuit board for driving the liquid crystal display. The liquid crystal display includes a first liquid crystal display portion and a second liquid crystal display portion, characterized in that at least one of the first and second liquid crystal display portions is a beautiful color liquid crystal display portion, and the beautiful color liquid crystal display portion It includes a liquid crystal display, colorful pictures and a light guide plate which are stacked one on top of the other in turn.

According to a technical solution of the present invention, the body includes a flip cover, and the liquid crystal display is located on the flip cover.

According to a preferred technical solution of the present invention, the circuit board is located between the first and second liquid crystal display sections, and the first and second liquid crystal display sections are both the beautiful color liquid crystal display sections, And each includes a liquid crystal display screen, a beautiful picture and a light guide plate which are stacked one on top of the other in turn. According to this solution, the dual color screen mobile phone of the present invention can make the main screen and the secondary screen larger at the same time at a low cost, thereby meeting people's needs for the aesthetic sense of the mobile phone.

According to another preferred technical solution of the present invention, the liquid crystal display includes a first liquid crystal display screen, a first beautiful color picture, a light guide plate, a second beautiful color picture, and a second liquid crystal display screen which are sequentially stacked on each other. The circuit board has a hollow portion, and the second beautiful picture is mounted on the hollow portion of the circuit board. According to this solution, the dual color screen mobile phone of the present invention can share a light guide plate, which not only reduces the cost, but also reduces the size of the entire color screen and reduces the weight of the entire color screen.

According to another preferred technical solution of the present invention, the first liquid crystal display portion is a true color liquid crystal display portion, and the true color liquid crystal display portion includes a color liquid crystal display module; the second liquid The crystal display part is the beautiful color liquid crystal display part, which includes a liquid crystal display support screen, a beautiful color picture and a light guide plate which are sequentially stacked on each other. According to this solution, it not only meets the high requirements of people for the main screen, but also provides the viewing function of the secondary screen, while also greatly reducing the cost of the mobile phone.

Wherein, at least one of the two surfaces of the beautiful color picture is ¾ side; and at least one of the two surfaces of the beautiful color picture is provided with a double-sided adhesive for communicating with the liquid crystal display screen. Hekou and / or the light guide plate are bonded; the double-sided adhesive is disposed on a non-display area of the beautiful picture and forms a circular pattern.

Wherein, the beautiful picture is a picture made of polyethylene terephthalate plastic. The colorful picture may also have at least two layers including a picture layer and a polyethylene terephthalate substrate layer. The beautiful color picture may also have a three-layer structure composed of a film layer, the picture layer, and the polyethylene terephthalate substrate layer which are sequentially stacked. As another preferred embodiment, the colorful picture may have a three-layer structure composed of the picture layer, the polyethylene terephthalate substrate layer, and a semi-permeable membrane layer which are sequentially stacked. The beautiful color picture may also have a four-layer structure composed of a film layer, the picture layer, the polyethylene terephthalate base material layer, and a semi-permeable film layer which are sequentially stacked.

Wherein, the semi-permeable film is a bright film or a dumb film; and the liquid crystal display is a fully transparent liquid crystal display. A diffusion sheet is further provided between the beautiful picture and the light guide plate; a light reflector is also provided between the light guide plate and the liquid crystal display circuit board.

The circuit board of the color screen mobile phone of the present invention has at least one light emitting diode; the diode is a white light source.

Wherein, the light guide plate has a notch corresponding to the light emitting diode, and the light emitting diode is located in the notch when the beautiful liquid crystal display is in an assembled state. A plurality of positioning cards are provided on the periphery of the light guide plate for positioning the liquid crystal display screen and colorful pictures.

The light guide plate of the present invention may also be provided in such a manner that at least one inclined portion extending to the side is formed on the side of the light guide plate, and the inclined portion is composed of a trapezoidal portion and a rectangular portion connected to the upper end of the trapezoidal portion. The rectangular portion is provided with a semi-circular groove; the light guide plate is installed in a frame, and the frame One side of the frame has a trapezoidal structure capable of accommodating the inclined portion and a rectangular structure connected to the upper bottom of the trapezoidal structure; the light emitting diode is disposed in a cavity formed between the groove and an inner wall of the rectangular structure. And is electrically connected to the liquid crystal display circuit board through a flexible circuit. The angle between the hypotenuse of the inclined portion and the horizontal direction is between 15 degrees and 30 degrees. A plurality of positioning stops are formed around the frame to position the beautiful picture and the LCD screen.

Wherein, at least one side of both sides of the cavity is provided with a film, preferably, each of the two sides of the cavity is provided with a film, and the film is a film made of an opaque material.

The light guide plate of the present invention may also be arranged in such a manner that at least one outwardly extending inclined portion is formed on the side of the light guide plate, the inclined portion is triangular, and a semicircular groove is formed at the top corner thereof, and the light is emitted. A diode is disposed in the groove. The angle between the hypotenuse of the inclined portion and the horizontal direction is between 15 degrees and 30 degrees. A plurality of positioning clips are formed on the light guide plate.

In addition, a protective screen is provided on the outside of the liquid crystal display screen, and the protective screen is a liquid crystal protective screen with holographic images.

Through the above technical solution, the color screen mobile phone of the present invention has the following positive technical effects: By inserting a beautiful picture between the liquid crystal display and the light guide plate, one can be added behind the graphic or text displayed on the liquid crystal display. Beautiful colorful background. So as not to affect the display content on the liquid crystal display, and enjoy the pleasing visual effects brought by the colorful background.

Among them, the light emitting diode provides a white light source for a color screen mobile phone, and the light guide plate diffuses the light emitted by the light emitting diode therein, thereby providing a uniformly-distributed backlight for bright pictures. The material of the pretty picture is polyethylene terephthalate plastic, that is, PET plastic sheet. This plastic has the advantages of good light transmittance, high temperature resistance, good inking property, invariant type, and anti-rolling. Since the liquid crystal display is a fully transparent liquid crystal display, and a colorful pattern is printed on the colorful picture, the full transparent liquid crystal display and the colorful picture are stacked together to make the display content on the liquid crystal display and the colorful The color patterns on the pictures are fused, allowing users to feel the beautiful color display effect.

Because the present invention has a simple structure and convenient processing, it is very suitable for mass production, and the raw materials used in the present invention have low cost and strong practicability, which can be obtained by consumers at a lower price. Dual color screen mobile phone with color display effect. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic diagram of a closed state of a dual color screen mobile phone provided by the present invention; FIG.

FIG. 1B is a schematic diagram of an open state of the dual color screen mobile phone shown in FIG. 1; FIG.

2A is an exploded perspective view of a first embodiment of a dual color screen structure used in a dual color screen mobile phone of the present invention;

2B is an exploded perspective view of a second embodiment of a dual color screen structure used in a dual color screen mobile phone of the present invention;

2C is an exploded perspective view of a third embodiment of the dual color screen structure used in the dual color screen mobile phone of the present invention;

FIG. 3A is a front view of a beautiful color picture in the dual color screen structure shown in FIGS. 2A, 2B, and 2C; FIG. 3B is an enlarged cross-sectional view of the beautiful color picture shown in FIG. 3A along the line A-A;

FIG. 4A is an exploded view of a beautiful picture with a two-layer structure in the present invention; FIG.

FIG. 4B is an exploded view of a beautiful picture with a three-layer structure in the present invention; FIG.

FIG. 4C is an exploded view of a beautiful picture with a four-layer structure in the present invention; FIG.

5 is a schematic structural diagram of a first embodiment of a light guide plate in the present invention;

6A and 6B are schematic structural diagrams of a second embodiment of a light guide plate in the present invention; and FIG. 7 is a schematic structural diagram of a third embodiment of a light guide plate in the present invention. detailed description

The present invention provides a dual color screen mobile phone, which includes: a body, a liquid crystal display mounted on the body, and a circuit board for driving the liquid crystal display. The liquid crystal display includes a first liquid crystal display section and a first Two liquid crystal display sections, characterized in that at least one of the first and second liquid crystal display sections is a beautiful color liquid crystal display section, and the beautiful color liquid crystal display section includes a liquid crystal display screen, Color pictures and light guides. As shown in FIGS. 1A and IB, a closed state diagram and a doze state diagram of a dual color screen mobile phone provided by the present invention are respectively. A dual color screen mobile phone provided according to the present invention includes a body 6 including a flip cover 7. The body 6 is provided with an antenna 61, a button 62, a microphone 63, and a line part. The flip cover 7 There is a dual color screen structure 8 and a handset 71.

In this embodiment, the first liquid crystal display portion is the main screen portion 3 of the mobile phone, and the second liquid crystal display portion is the sub screen portion 1 of the mobile phone. The dual color screen structure 8 is composed of a main screen portion 3, a circuit board 2 and a sub screen portion 1 which are sequentially stacked together. The circuit board 2 provides a backlight and a driving circuit for the main screen portion 3 and the sub screen portion 1, respectively; At least one of the main screen portion 3 and the sub screen portion 1 has a beautiful color structure.

Fig. 2A is a perspective view of a first embodiment of a dual color screen structure used in a dual color screen mobile phone according to the present invention. The main screen portion 3 is a beautiful color liquid crystal display portion, and includes a liquid crystal display 11, a beautiful color picture 12 and a light guide plate 13 which are sequentially stacked on each other; the secondary screen portion

1 is a color LCD display part, and includes a liquid crystal display ir, a beautiful color picture 12 'and a light guide plate 13' which are sequentially stacked on top of each other. In this figure, the LCD circuit board 2 is electrically connected to the main screen portion 3 and the sub screen portion 1 to drive the liquid crystal display screens 11 and 1Γ so as to display information on the liquid crystal display screens 11 and 11.

By inserting colorful pictures 12, 12 'between the liquid crystal displays 11, 1Γ and the light guide plates 13, 13', respectively, the graphics or text displayed on the liquid crystal displays 11 and 1Γ can be enhanced. — A beautiful colorful background. So as not to affect the display content on the LCD screen, but also willing to enjoy the pleasant visual effects brought by the colorful background.

The liquid crystal display 11 and IV can be translucent liquid crystal display. When the backlight is not used, the display effect will not be affected by the 12, 12 'of the beautiful picture.

Among them, in a preferred solution provided by the present invention, the liquid crystal display screen 11 is a fully transparent liquid crystal display screen. The advantage of using a fully transparent liquid crystal display is that it has a high light transmittance, which can transmit a beautiful picture effect in the absence of light; at the same time, in the case of a backlight, the brightness of the backlight of the liquid crystal display can be enhanced, ie Improve the utilization of LCD backlight. For black and white liquid For crystal display, because of the existence of grid, usually only translucent liquid crystal display can be used. However, in the present invention, since bright color pictures 12, 12 'are respectively added between the liquid crystal display screens 11, 1Γ and the light guide plates 13, 13', a fully transparent liquid crystal display screen can be used.

The light guide plates 13, 13 'are a transparent material that allows light to diffuse and be evenly distributed therein. It is arranged inside the beautiful pictures 12, 12', and can provide uniform brightness to the beautiful pictures 12, 12 ' Distributed backlight.

The LCD circuit board 2 is located at the innermost side of the beautiful color liquid crystal display of the present invention. At least one light emitting diode 21 is soldered on the LCD circuit board 2 and is disposed on the side or adjacent side of the light guide plate 13, W. Since the backlight source, that is, the LED 21 is installed in the vicinity of the light guide plate, the backlight brightness of the LCD screens 1 and 1Γ is uniform, thereby reducing shadows on the display.

In addition, the light-emitting diode 21 is a white light-emitting diode, so that the colors and patterns of the colorful pictures 12, 12 'can be fully reflected.

Still referring to FIG. 2A, protective screens 16 and 16 ′ are respectively provided on the outer sides of the two liquid crystal display screens 11 and 1 Γ of the main screen section 3 and the auxiliary screen section 1. The protective screens 16, W are liquid crystal protective screens for holographic images. They are a type of liquid crystal protective screens formed by using holographic technology. The liquid crystal displays 11, 1Γ are illuminated by external light without backlight. A holographic stereoscopic image effect is displayed on the protection screens 16, W, and in the case of a backlight, the normal use effect is not affected.

Diffusion sheets 14, 14 'are respectively provided between the beautiful pictures 12, 12' of the main screen section 3 and the sub-screen section 1, and the light guide plates 13, 13 '. The diffusion sheet 14, W can eliminate the grid displayed on the liquid crystal display 11, W due to the grating on the light guide plates 13, 13 ', so that the emitted light is more uniformly distributed, and at the same time, the The shadow of the reflection point is not visible on the front side, thereby further enhancing the display effect.

Reflective sheets 15, 15 'are respectively provided between the light guide plates 13, 13' of the main screen portion 3 and the auxiliary screen portion 1, and the circuit board 2. Reflective sheet 15, 15 'can be a PVC (Polyvinyl chloride) sheet with a reflective film on the surface. The light leaked from the bottom surface of the light plate 13 is reflected back to the light guide plates 13 and 13 ′ to enhance the brightness of the backlight and also improve the light utilization rate.

FIG. 2B is an early perspective view of a second embodiment of a dual-color screen structure used in a dual-color screen mobile phone of the present invention; the main screen portion 3 is a bright-color liquid crystal display portion, and includes a sequential superimposed on each other The first liquid crystal display 11, the first beautiful color picture 12, and the light guide plate 13 together. The secondary screen portion 1 is also a beautiful color liquid crystal display portion and includes a light guide plate 13, a second beautiful color picture 12 ', and a second liquid crystal display 1Γ. The second beautiful color picture 12' is mounted on the circuit board 2. Hollow out. The area of the second beautiful color picture 12 'is smaller than the area of the first beautiful color picture 12'. Therefore, the dual color screen structure of the present invention can share a light guide plate 13, which not only reduces the cost, but also reduces the size of the entire color screen and reduces The weight of the entire color screen.

Moreover, as shown in FIG. 2B, first and second protective screens 16, 16 'are respectively added on the outer sides of the first and second liquid crystal display screens 11, 1 ′, and between the first beautiful color picture 12 and the light guide plate 13 A first diffusion sheet 14 ′ is added in between, and a second diffusion sheet 14 is added between the circuit board 2 and the light guide plate 13.

Among them, the first and second protection screens 16, 16 'are liquid crystal protection screens for holographic images, which are formed by processing using holographic technology, so that the liquid crystal display section 1 is in a state where there is no backlight. Through the irradiation of external light, the holographic three-dimensional image effect is displayed on the protection screens 16, 16, and in the case of having a backlight, the normal use effect is not affected.

The diffusion sheets 14 and 14 can eliminate the grid displayed on the liquid crystal display panels 11 and 1 Γ caused by the grating on the light guide plate 13 and make the emitted light more uniform. The shadow of the reflection point is not visible on the front side, thereby further enhancing the display effect.

2C is a perspective view of a third embodiment of a dual color screen structure used in a dual color screen mobile phone according to the present invention. The main screen portion 3 has a true color structure and includes a color liquid crystal display module 31 and a protection screen 16. The liquid crystal display module 31 generally includes a color liquid crystal display screen, a light guide plate, and a backlight source. This is a prior art, so it will not be described in detail here. Between the main screen portion 3 and the sub screen portion 1 is a circuit board 2. The secondary screen portion 1 is a beautiful color liquid crystal display portion, and includes a liquid crystal display 11, a beautiful color picture 12, and a light guide plate 13 which are sequentially stacked on top of each other. Among them, a light reflecting sheet 15 is provided between the light guide plate 13 and the circuit board 2 respectively. The reflective sheet 15 can reflect the light received on the surface (including the light leaking from the bottom surface of the light guide plate 13) back to the light guide plate 13 to enhance the brightness of the backlight and also improve the light utilization rate. A diffuser sheet 14 is added between the colorful picture 12 and the light guide plate 13 to eliminate the grid displayed on the liquid crystal display 11 due to the grating on the light guide plate 13 and make the emitted light more uniform. A protective screen 16 is provided on the outside of the liquid crystal display 11.

Refer to FIG. 3A, which is a front view of a pretty picture in the present invention. Among them, the display area 121 of the colorful picture 12, that is, the area that can be seen by the user, can be printed with various colored patterns, which are used as the background pattern of the color screen mobile phone. The pattern can be a green grass sky or a red ribbon and other Human landscape, etc., as shown in the figure is a beautiful map of Jiangnan water village. The non-display area 122 of the colorful picture is an area invisible to the user, and is used to fix the liquid crystal display 11 and the light guide plate 13.

As shown in FIG. 3B, it is an enlarged cross-sectional view of the beautiful picture shown in FIG. 3A along the line A-A. According to the embodiment of the present invention, a double-sided adhesive tape 123 may be further provided on the upper surface 124 or the lower surface 125 of the beautiful picture 12, or a double-sided adhesive tape may be provided on the upper surface 124 and the lower surface 125 at the same time, so as to be separately displayed with the liquid crystal The screen 11 and / or the light guide plate 13 are bonded. As can be seen from the figure, in one of the preferred solutions provided by the present invention, the double-sided tape is disposed on the non-display area 122 of the upper surface 124 and the lower surface 125 of the beautiful picture, and forms a rectangular circular pattern so that The beautiful picture 12 is firmly fixed between the liquid crystal display 11 and the light guide plate 13. The double-sided adhesive serves as a seal to prevent moisture or dust from penetrating into the beautiful picture 12 and the liquid crystal display 11, and / or penetrating between the beautiful picture 12 and the light guide plate 13.

According to a preferred solution provided by the present invention, the upper surface 124 and / or the lower surface 125 of the beautiful picture 12 can be made into a dull surface, so that it can be avoided during the installation process when the beautiful picture 12 and the LCD screen, the guide Bubbles and shadows are produced when light surfaces such as light plates are in close contact.

The material of this colorful picture is polyethylene terephthalate plastic, usually referred to as polyester sheet, that is, PET plastic sheet. This kind of plastic has good light transmission, high temperature resistance, good inkability, and constant shape. , Anti-curling and other advantages. A color pattern can be directly printed on the upper surface 124 of the PET plastic sheet 126, such as a Jiangnan water village map shown in FIG. 3A and the like. In addition, the color pattern may be directly on the lower surface 125 of the PET plastic sheet 126. Alternatively, color patterns are printed on the upper and lower surfaces of the PET plastic sheet 126, respectively, so as to form a color pattern with a three-dimensional synthetic effect.

Referring to FIG. 4A, the colorful picture 12 may have a two-layer structure consisting of only a picture layer 20 and a PET substrate layer 22, wherein the picture layer 20 is opposite to the liquid crystal display 11 and the PET substrate layer 22 is opposite to the light guide plate. 13 relative. Vice versa, the SP, picture layer 20 is opposite to the light guide plate 13, and the PET substrate layer 22 is opposite to the liquid crystal display 11. This kind of beautiful color picture has simple structure, small size and light weight under the condition that the picture installation is firm and reliable.

Referring to FIG. 4B, the bright color picture 12 may have a three-layer structure composed of a thin film layer 23, a picture layer 20, and a PET substrate layer 22 stacked in this order. The material layer 22 is opposite to the light guide plate 13. Among them, the thin film layer 23 protects the picture layer. As an alternative, the colorful picture 12 may also have a three-layer structure composed of the picture layer 20, the PET base material layer 22, and the semi-permeable film layer 24 which are sequentially stacked. In this case, the picture layer 20 and the liquid crystal display The screen 11 is opposed, and the semi-permeable film layer 24 is opposed to the light guide plate 13. Among them, the semi-permeable film layer 24 plays a role of further uniforming the light.

Referring to FIG. 4C, the beautiful picture 12 may also have a four-layer structure composed of a film layer 23, a picture layer 20, a PET substrate layer 22, and a semi-permeable film layer 24 which are sequentially stacked. At this time, the thin film layer 23 is opposed to the liquid crystal display 11, and the semi-permeable film layer 24 is opposed to the light guide plate 13.

The semi-permeable film layer 24 in FIGS. 4B and 4C may be a bright film or a dumb film, and the transparency of the bright film is better.

5 is a schematic structural diagram of a light guide plate of a color screen mobile phone according to a first embodiment of the present invention. As can be seen from the figure, one side of the light guide plate 13 has a notch 133 corresponding to the light emitting diode 21 on the LCD circuit board 2. Specifically, the light-emitting diode 21 on the LCD circuit board 2 is provided at a notch 133 at the outer end of the inclined portion 132 extending outward of the light guide plate 13. Dangliangyeye When the crystal display is mounted on a mobile phone, the light-emitting diode 21 on the LCD circuit board is located in the notch 133 on the light guide plate 13 described above, so that more light can enter the light guide plate 13 to improve the backlight effect.

The light emitting diode 21 emits bright light under the action of the driving circuit on the LCD circuit board 1, and generates a backlight with uniform brightness through the light guide plate 13 described above, and is further enhanced by the reflective sheet 14 disposed inside the light guide plate 13. The intensity of the backlight. The adoption of all the above measures has further enhanced the color display effect.

The acute angle between the hypotenuse of the inclined portion 132 and the horizontal direction is 15 to 30 degrees. This angle is designed to reflect light and make the LED backlight brightness more uniform.

Among them, a plurality of positioning cards 1311 are also provided around the light guide plate 13 to position the beautiful picture 12 and the liquid crystal display 11.

6A and 6B are schematic structural diagrams of a second embodiment of a light guide plate of a color screen mobile phone according to the present invention. The side of the light guide plate 13 is formed with an inclined portion 132 extending at least outwardly. The inclined sound 132 is formed by a trapezoidal portion 134 and a rectangular portion 135 connected to the upper and lower portions of the trapezoidal portion 134. A semicircular groove 136 is formed in the rectangular portion 135. The light guide plate 13 is installed in a frame 3, and one side of the frame 3 has a trapezoidal structure 142 capable of accommodating the inclined portion 132 and a rectangular structure 143 connected to the upper bottom of the trapezoidal structure 142. The LED is located in the cavity 131 formed between the groove 136 and the inner wall of the rectangular structure 143, and is electrically connected to the circuit board 2 through the FPC (soft circuit) 22. The above structure can make the inclined portion 132 fit better with the frame 3, and at the same time, the light can be well introduced into the light guide plate 13, thereby improving the utilization rate of the light.

As with Bt, a thin film 4 is provided on each side of the cavity 131. The thin film 4 is made of an opaque material, and the backlight 21 can be completely enclosed in the cavity 131 to further improve the utilization rate of light.

The bottom angle α of the trapezoidal portion 134 of the inclined portion 132 reached is between 15 degrees and 30 degrees, so that the light guiding effect of the trapezoidal sound 134 can be better.

At the same time, a plurality of positioning stops are formed around the frame 3 for The crystal display screen 11 is positioned and clamped to facilitate installation.

7 is a schematic structural diagram of a third embodiment of a light guide plate according to the present invention. Among them, the inclined portion 132 is triangular, and a semi-circular groove 136 is formed at a top corner 137 thereof. The LED is located in the groove 136. The angle β between the long hypotenuse of the inclined portion 132 and the horizontal direction is 15 degrees to 30 degrees. The above structure can also achieve uniform introduction of light, and at the same time, the structure is simple, which is favorable for processing.

Meanwhile, there are two triangular inclined portions 132 in FIG. 7, which are symmetrically formed on the side of the light guide plate 13. By providing two inclined portions, and each inclined portion corresponds to a backlight source, the brightness of the backlight is increased, and the display effect is enhanced.

There can be multiple inclined portions 132, and the corresponding LEDs can also be multiple. In fact, one LED can already meet the brightness requirements of the backlight. If more, it will increase costs and occupy space.

In addition, a plurality of positioning protrusions 139 are formed on the light guide plate 13 for positioning the colorful pictures 12 and the liquid crystal display 11 for easy installation.

To sum up, the main screen part and the auxiliary screen part of the dual-color screen mobile phone of the present invention adopts a "bright color structure", that is, a "false color structure", and replaces the current display with a combination of bright color pictures and black-and-white LCD display Some black-and-white LCD screens and true-color LCD screens, combined with backlights and light guide plates to achieve color display effects, can not only display color images well, but also have low cost, simple structure, convenient processing, small size, and light weight. Low energy consumption. Mobile phone manufacturers can configure beautiful pictures with various patterns on the main screen and / or the secondary screen for their mobile phone products. Consumers can choose to buy according to their own preferences. In addition, consumers can also set different display screens. For example, for the beautiful color LCD display with the Jiangnan water town map described above, the main screen and / or the secondary screen can display a beautiful Jiangnan water town map. In this way, when the mobile phone is in working state, the user tfc will see "A crescent-shaped fishing boat swayed gently on the lake, and the fishing boat and the red intoxicating maple leaves on the lake reflected on the sparkling lake", a vivid color picture.

The above-mentioned several embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical field may also make changes without departing from the spirit and scope of the present invention. In order to make various changes and modifications, all equivalent technical solutions also fall within the scope of patent protection of the present invention. Industrial applicability

The dual color screen mobile phone of the present invention uses a beautiful color liquid crystal display composed of a beautiful color picture and a black and white liquid crystal display on the main screen and / or the secondary screen to replace the existing black and white liquid crystal display and a true color liquid crystal display. Together with the backlight and the light guide plate to achieve the color display effect, not only can display color images well, low cost, simple structure, convenient processing, but also small size, light weight, and low energy consumption.

Claims

Rights request

What is claimed is: 1. A dual color screen mobile phone, comprising: a body, a liquid crystal display mounted on the body, and a circuit board for driving the liquid crystal display. The liquid crystal display includes a first liquid crystal display portion and a second liquid crystal display. The display portion is characterized in that at least one of the first and second liquid crystal display portions is a beautiful color liquid crystal display portion, and the beautiful color liquid crystal display portion includes a liquid crystal display screen and a beautiful color image which are sequentially stacked on each other. And light guide.

2. The dual color screen mobile phone according to claim 1, wherein the body comprises a flip cover, and the liquid crystal display is located on the flip cover.

3. The dual color screen mobile phone according to claim 1, wherein the circuit board is located between the first and second liquid crystal display sections, and the first and second liquid crystal display sections are all The pretty-color liquid crystal display part is described, and includes a liquid crystal display screen, a pretty-color picture, and a light guide plate which are sequentially stacked on top of each other.

4. The dual-color screen mobile phone according to claim 1, wherein the liquid crystal display comprises a first liquid crystal display screen, a first beautiful color picture, a light guide plate, and a second beautiful color which are sequentially stacked on top of each other. A picture, a second liquid crystal display screen, the circuit board has a hollow portion, and the second beautiful picture is mounted on the hollow portion of the circuit board.

5. The dual color screen mobile phone according to claim 1, wherein the first liquid crystal display portion is a true color liquid crystal display portion, and the true color liquid crystal display portion includes a color liquid crystal display module; the second liquid crystal display Part is the beautiful color liquid crystal display part, which includes a liquid crystal display screen, a beautiful color picture and a light guide plate which are sequentially stacked on top of each other.

6. The dual color screen mobile phone according to claim 1, wherein at least one of two surfaces of the beautiful color picture is a matte surface.

7. The dual color screen mobile phone according to claim 1, wherein a double-sided tape is provided on at least one of two surfaces of the beautiful color picture, for connecting with the liquid crystal display and / Or the light guide plate is bonded.

8. The dual-color screen mobile phone according to claim 7, wherein the double-sided adhesive is disposed on a non-display area of the beautiful color picture and forms a circular pattern.

9. The dual color screen mobile phone according to claim 1, wherein the bright color picture is a picture made of polyethylene terephthalate plastic.

10. The dual-color screen mobile phone according to claim 1, wherein the beautiful picture has at least two layers including a picture layer and a polyethylene terephthalate substrate layer.

11. The dual-color screen mobile phone according to claim 10, wherein the colorful picture is a film layer, the picture layer, and the polyethylene terephthalate substrate which are sequentially stacked. A three-layer structure consisting of layers.

12. The dual-color mobile phone according to claim 10, wherein the beautiful picture is a picture layer, a polyethylene terephthalate base material layer, and A three-layer structure consisting of a membrane layer.

13. The dual-color screen mobile phone according to claim 10, wherein the beautiful picture is a film layer, the picture layer, and the polyethylene terephthalate substrate which are sequentially stacked. Layer and semi-permeable membrane layer.

14. The dual-color screen mobile phone according to claim 12 or 13, wherein the semi-permeable film is a bright film.

15. The dual color screen mobile phone according to claim 12 or 13, wherein the semi-permeable membrane is a H sub-membrane.

16. The dual color screen mobile phone according to claim 1, wherein the liquid crystal display is a fully transparent liquid crystal display.

17. The dual color screen mobile phone according to claim 1, wherein a diffusion sheet is further provided between the beautiful color picture and the light guide plate.

18. The dual-color screen mobile phone according to claim 1, wherein a reflective sheet is further provided between the light guide plate and the circuit board.

19. The dual color screen mobile phone according to claim 1, wherein the circuit board has at least one light emitting diode.

20. The dual color screen mobile phone according to claim 19, wherein the diode is a white light source.

21. The dual color screen mobile phone according to claim 19, wherein the light guide plate has a notch corresponding to the light emitting diode, and when the dual color screen mobile phone is in an assembled state, the folded light emitting diode is located at Inside the gap.

22. The dual-color screen mobile phone according to claim 21, wherein a plurality of positioning cards are provided around the light guide plate for positioning the liquid crystal display screen and the beautiful color picture.

23. The dual color screen mobile phone according to claim 19, wherein at least one outwardly extending inclined portion is formed on a side of the light guide plate, and the inclined portion is formed by a trapezoidal portion and an upper bottom of the trapezoidal portion. It is composed of connected rectangular portions, which are provided with semi-circular grooves;

The light guide plate is installed in a frame, and one side of the frame has a trapezoidal structure capable of accommodating the inclined portion and a rectangular structure connected to an upper bottom of the trapezoidal structure;

The light emitting diode is disposed in a cavity formed between the groove and the inner wall of the rectangular structure, and is electrically connected to the liquid crystal display circuit board through a flexible circuit.

24. The dual-color screen mobile phone according to claim 23, wherein a plurality of positioning stops are formed around the frame for positioning the beautiful color picture and the LCD screen.

25. The dual color screen mobile phone according to claim 23, wherein at least one side of both sides of the cavity is provided with a film.

26. The dual color screen mobile phone according to claim 25, wherein a film is formed on each side of the cavity.

27. The dual color screen mobile phone according to claim 26, wherein the film is a film made of opaque material.

28. The dual color screen mobile phone according to claim 19, wherein at least one outwardly extending inclined portion is formed on a side of the light guide plate, the inclined portion is triangular, and a top corner thereof is formed. A semi-circular groove is formed, and the light emitting diode is disposed in the groove.

29. The dual color screen mobile phone according to claim 28, wherein a plurality of positioning clips are formed on the light guide plate.

30. The dual color screen mobile phone according to claim 23, 28, wherein an included angle between the hypotenuse of the inclined portion and the horizontal direction is between 15 degrees and 30 degrees.

31. The dual color screen mobile phone according to claim 1, wherein a protection screen is provided on the outside of the liquid crystal display screen.

32. The dual color screen mobile phone according to claim 31, wherein the protection screen is a liquid crystal protection screen with a holographic image.