TWI283323B - Double-faced display device and portable device therewith display device - Google Patents

Abstract

A double-faced display device and portable device therewith. A frontlight module comprises a frontlight unit (FLU) and a light source module. A liquid crystal module is disposed on an anti-reflective surface of the FLU, comprising a liquid crystal panel and a filter. A first polarizer is disposed between the liquid crystal module and the frontlight module. A switching liquid crystal film is disposed on a second surface of the liquid crystal module or disposed on a reflective-penetrable surface of the frontlight module. The switching liquid crystal film is transparent in a first mode and is opaque in a second mode.

Description

1283323 V. INSTRUCTIONS (1) ~---------- [Technical Field of the Invention] One invention relates to a display device, and in particular; a portable electronic device and a double-sided type thereof The liquid crystal is provided with a double-sided liquid crystal display device. [Prior Art] With the continuous display of the CRT, the display device has been produced from the conventional cathode-emitting liquid crystal display device to produce various new types of display devices. Among them, 'this 遂洳2 & D) has the advantages of lightness, power saving, low light and light, etc., because of one of the common display devices of the recording type Ray and the second, it can be widely used in pen 1, #恶自, digital Among communications, information or consumer electronics such as cameras, camcorders, and mobile phones. "The first day, the day", the display device is mainly made up of a liquid crystal panel (LCD pane 1), and the staff = liquid sa panel itself does not emit light, so it is necessary to supply a light source with sufficient brightness and uniform distribution to make the liquid crystal panel The image can be displayed normally. The function of supplying the light source can be performed by a backlight (BL) module or a frontlight (FL) module. The distinction between the backlight module and the front light module is in principle Different from the relative position of the liquid crystal panel, the backlight module is generally located behind the liquid crystal panel and the filter, and is mainly used for the transmissive panel. The front light module is located in front of the liquid crystal panel and the filter, and is mainly used for reflection. And the semi-transparent semi-reflective panel. The backlight module can be divided into an edge-lit backlight module and a direct-lit backlight module according to different light source configurations. The side-lit backlight module sets the light source to The side of the light guide plate and the reflector can save space requirements. Therefore, it is generally important to pay attention to the line that can be carried.

0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd Page 6 1283323 V. Description of invention (2) 1 (2) = supply light source. As for the front light module, it will also be sighed on the side, which can also achieve the space requirement. Notes on Jinzhong's face, mobile electronic devices such as computers or mobile phones. ί ί: Design the display screen into a clamshell structure. It can be used to make the action iHL cover open or closed, so it is best to use ΐΓιΓοοΛ^^0 ϊϊί. In the double-sided liquid crystal display device of FIG. 1A, the first screen 110, and the lower screen is the second screen 1 曰 20, the first screen 丨 10 and the second screen 12 〇 are respectively independent two sets of liquid y board and two sets of edge-lit backlight modules. The first screen 110 adopts a liquid-liquid panel U1 as a display panel, and the edge-lit backlight module includes a light source group 112, a first reflection plate 113, a first light guide plate 114, and other necessary optical films. The sheet 115, for example, the first diffusion plate 116, the first lower polarizing film (BTM PF) 117, the first color filter 118, and the first upper polarizing film (T〇p pf) U9 Wait. The second screen 120 adopts a second liquid crystal panel 121, and the side light type backlight module is packaged; the first light source group 122, the second reflection plate 123, the second guiding board 124, and other necessary optical films 125, For example, the second diffusion plate 126, the second lower

A photo diaphragm (BTM PF) 127, a second color filter 128, a second I diaphragm (TOP PF) 129, and the like. In addition, the first screen 11 〇 and the second side; the outer side of the screen is covered with a plastic frame 1 30, respectively. In this way, the human eye can be seen on both the screen 110 side and the second screen 120 side.

1283323 V. INSTRUCTION DESCRIPTION (3) In the double-sided liquid crystal display device of Fig. iiHo, the first screen 110 is essentially two separate and separate singular and only the first screen 110 and the second The screen 120 does not reach any two (four)'s that are placed on the lid. The two sides operate independently. This problem can increase the thickness of the lid. For example, the structure shown in Fig. 1B is added to the appropriate elements of the screen u〇 and the second screen 12A. The screen is the second start = conventional double-sided liquid crystal display device 1 〇〇, in the upper one screen 110 盥 i1 total 0, and the lower screen is the second screen 120, the first board, the second screen 12 〇 Separate two sets of liquid crystal display surfaces are used respectively. “2〇=Using the first LCD panel 111 as the ...^ 22 liquid crystal panel 121. Compared with the conventional double-sided 第 in the 1st (4): The difference is in the first (four) The conventional double-sided type = Γ / / 100 'the side-lit backlight module is not completely independent, the side-lit backlight module of the first curtain 120 uses a common light source group "V-light plate 104 and other components, and other optical The diaphragm is a separate optical film 115 of the first group, including a first diffusion plate 116, a moon τ polarizing film 117, a first color filter 118, and a first upper polarizing film 11 9 , etc. The independent well wind 125 of the sidelight type back module of the screen 1 2 includes a second diffusion plate 126, a second lower polarizing film 127, a diaphragm color filter I28, a second upper polarizing film and the like. However, even if the conventional double-sided liquid crystal_100' in the first drawing is used, the light source group 102 and the light guide plate 104 can be used by the mound element;

0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd !283323 5. Invention description (4) , but the first screen 110 and the second screen 12 〇 Zhongbei Z operate independently, the other optical film and other tuples are still thick It is not easy to achieve the requirement of thinning. There are still many cattle, and it is difficult to reduce it. In addition, the double-sided liquid crystal display device can be used, for example, a notebook computer or a mobile phone, and can be placed two times, and the screen is displayed on the screen and the secondary display screen. 1c and 1D show an example of a portable electronic device 20 of a 2 = re-surfaced liquid crystal display device. „ L1C is not shown. When the user places the cover 220 of the portable electronic device 200 on the main body 210, the main display screen 222 is shielded, and the secondary display screen 224 can perform display operation. As shown in FIG. 1D, when the user opens the cover 22 of the portable electronic device 2, the display operation can be directly performed by the main display screen 22, and at this time, the display of the second display screen 24 is displayed. The action becomes unnecessary. If the secondary display screen 2 24 is not displayed in the state in which the cover 2 2 0 is opened, it is possible to prevent an outside person other than the user from seeing the display content to preserve personal privacy. Therefore, it is necessary to separate the drive 1C and the circuit board so that the display operation of the main display screen 222 and the sub-display screen 224 are separated, which is not economical for manufacturing cost. [Invention] In view of this, the present invention A form of double-sided liquid crystal display device includes a front light module, a liquid crystal panel, a first polarizing film, and a switching liquid crystal film. The front light module includes a front light unit.

0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd page 9 1283323 5. invention (5) ---- (front ljght unit, FLU) and a light source group, the front light unit has a reflective tooth surface and a Anti-reflection surface; the light source group is disposed on one side of the front light suppressor. The liquid crystal panel group is disposed on the anti-reflection surface side of the front light unit

:=曰, and a filter 'light sheet: wherein the liquid crystal panel has a front facing: the mold, and the first surface and the second surface opposite to the front light module; the clear #甘孙 is disposed on the first surface of the liquid crystal panel The second surface. The first bias = film ^ is placed between the liquid crystal panel group and the front light module. The switching liquid crystal film is bitten = the second surface side of the liquid crystal panel, or is disposed on the second penetration side of the front light unit. The switching liquid crystal film is switched between the first state and the second state. When switching to the first state, the switching liquid crystal film is transparent, and when switching to the second state, the switching liquid crystal film is opaque. In addition, another aspect of the present invention further discloses a portable electronic device having a body and a cover, the cover being rotatably disposed on the body, wherein the cover has the double-sided liquid crystal display device. Further, the switching liquid crystal film in the double-sided liquid crystal display device is most preferably disposed on the side of the cover opposite to the body. Among the above double-sided liquid crystal display devices and portable electronic devices,

The liquid crystal panel can be a transmissive thin film transistor liquid crystal panel or a semi-transparent semi-reflective thin film transistor liquid crystal panel. The switching liquid crystal film may be a p〇lymer Dispersed Liquid Crystal (PDLC). The calendering sheet can be a colored furnace or a light sheet. In addition, the first polarizing film may be an anti-reflective (AR) polarizing plate or an anti-reflective anti-glare (an ^ i - ref 1 ecti V e & anti-glare, ar-AG) type polarizing board. First polarizing film and front light unit

0632_A50196TWf(5.0) ; AU0403064 ; Instruction manual .ptd Page 10 1283323 V. Invention description (6) An anti-reflection surface may also be coated with an optical film layer to increase anti-reflection properties. In addition, the double-sided liquid crystal display device and the portable electronic device may further include a second polarizing film disposed on the second surface side of the liquid crystal panel. The second polarizing film can be a brightening concentrating film

Brightness Enhancement Film, DBEF) polarizer. Further, in the double-sided liquid crystal display device and the portable electronic device, there may be a gap between the first polarizing film and the anti-reflection surface of the front light unit. The above and other objects, features and advantages of the present invention will become more apparent from [Embodiment] A structure of a double-sided liquid crystal display device 1 according to an embodiment of the present invention will be described with reference to Fig. 2A. The double-sided liquid crystal display device j of FIG. 2A includes a liquid crystal panel 10, a filter 20, a first polarizing film 3A, a first photo film 40, a front light unit 50, and a light source group 6A. A switching liquid crystal film 70 and a double-sided liquid crystal display device are driven to display a plastic frame 9 that drives the ic 8... cover member. The liquid crystal panel 10 and the light-receiving sheet 2^ constitute a liquid aa panel group, and the front light unit 5〇 and the light source group 6〇 constitute an optical module. Hereinafter, the respective components and the connection relationship of each component will be described based on Fig. 2A.

Wake up I page 11 0632-A50196TWf (5.0); AU0403064; manual. ptd 1283323 V. Description of the invention (7) In the Twilight core group, the 'front light early element 50 has a reflective penetration surface 52 and an anti-reflection surface 54, The reflective penetration surface 52 generally has a shape that allows light to penetrate and reflect, such as the V-shaped surface structure shown in FIG. 2A, and the anti-reflection surface 54 is a plane having anti-reflection characteristics. The light source group 6 is disposed on one side of the front light unit 50 (for example, the left side of FIG. 2A), and the front light unit 5 〇 projects the light 'reflected by the reflection through surface 52 to reflect the light below the second A picture. . The liquid crystal panel group is disposed on the anti-reflection surface 52 side of the light unit 5 before the front light module. In the liquid crystal panel of the present embodiment, the liquid crystal panel 1 is a transmissive thin film transistor liquid crystal panel having a first surface 12 facing the front light module and a second surface 14 4 opposite to the front light module. The filter 2 可 can be a color filter or other form of filter film disposed on the first surface 12 side of the liquid crystal panel j 。. The first polarizing film 30 is disposed between the liquid crystal panel group and the front light module. In the present embodiment, the first polarizing film 30 is attached to the first surface 12 side of the liquid crystal panel 1 and can be directly attached to the filter 20, for example. The second polarizing film 40 is disposed on the second surface 14 side of the liquid crystal panel 1 and may be directly attached to the second surface 14 of the liquid crystal panel 12, for example. The first polarizing film 30 can generally adopt a polarizing film having anti-reflection characteristics, and the second polarizing film 4 反射 can partially reflect the light, and reflect the reflected light back to the front light module to pass through the front light unit 50. The switching liquid crystal film 7 that is reflected upwardly through the reflection surface 52 is emitted, and the unreflected light is emitted downward from the double-sided liquid crystal display device 1. In this embodiment, the switching liquid crystal film 70 is disposed on the side of the reflective transmission surface 52 of the front light unit 5A, and the switching liquid crystal film 70 is switchable between the transparent first state and the opaque second state. Switching type of this embodiment

0632-A50196TWf(5.0); AU0403064; Instruction manual. ptd Page 12 1283323 V. Description of the invention (8) The liquid crystal film 70 can be a polymer dispersed liquid crystal film (p〇lymer)

Dispersed Liquid Crystal, PDLC). The polymer-dispersed liquid crystal film is characterized in that the liquid crystal alignment can be changed by a driving voltage to change its light transmission state. When the polymer-dispersed liquid crystal film is not energized, the arrangement of the liquid crystal molecules is irregular, so that the light cannot pass, so that it is opaque. If a driving voltage is applied so that the arrangement of the liquid crystal molecules is regularized, the light can be made transparent. Transparent film. Due to the above characteristics of the polymer-dispersed liquid crystal film, it can be applied to the switching of the state of the switching liquid crystal film. When the switching liquid crystal film 70 is to be switched to the first state of transparency, the polymer-dispersed liquid crystal film can be given. A drive voltage. When the switching liquid crystal and the film 70 are switched to the second state of opacity, the driving voltage can be cut off to make the polymer-dispersed liquid crystal film opaque. The double-sided liquid crystal display device of the above embodiment can be applied to various portable electronic devices such as a conventional notebook computer or a mobile phone. Referring to FIGS. 2B and 2C, an embodiment of the double-sided liquid crystal display device 1 of the above embodiment is applied to the structure of the portable electronic device. As shown in FIG. 2B and FIG. 2C, the portable electronic device 2 has a body 210 and a cover 220, and the cover 22 is rotatably disposed on the body 210, wherein the cover 2 20 has the above The double-sided liquid crystal display device 1 of the embodiment has a structure that will not be repeatedly described. It should be noted that the switching liquid crystal film 7 in the double-sided liquid crystal display device 1 is disposed on the side of the cover 22 opposite to the body 2 1 0 (ie, the upper side of the second B), that is, the setting The screen 224 side is displayed. In other words, taking Fig. 2A as an example, the top of Fig. 2A is the side of the secondary display screen 224, and the lower side is the side of the main display screen 222. , 0632-A50196TWf (5.0); AU0403064; manual. Ptd page 13 1283323

When the user will be able to fight, @ 7 # 210, such as the second guard figure - the electronic device 2〇0 cover 220 is closed to the body, the weight is not, the main display is not 222 is in the shaded # rm stem : The liquid film 7 〇 switches to the first state of transparency, and ΪΞΓ ί 2 can perform display operation. When the user opens the portable cover 999 and d: spray, as shown in Fig. 2C, the main display screen 2 2 2 is not concealed, and the _ ” can be pushed to display no action. Switching the switching liquid crystal film 70 to the first shape of the opaque 筮 _ 4 # π l β month, so that the display screen 2 2 4 cannot be displayed due to opacity, thus avoiding the user The display is viewed by the secondary display screen 24 when the cover 220 of the portable electronic device 200 is opened to preserve personal privacy. Here, it is necessary to explain that the transmissive thin film transistor liquid crystal panel is used as the double-sided liquid crystal display device 1 of the liquid crystal panel 10, and the component arrangement thereof is not limited to, and is arranged in the arrangement shown in Fig. 2 . Please refer to the 3A to 3D and 4th to 4D drawings. It is to be noted that the other embodiments of the double-sided liquid crystal display device i are arranged in the third embodiment, and the fourth and fourth embodiments are shown in different angles from the second embodiment. The components of the non-double-sided liquid crystal display device i are arranged such that the positions of the light source group 6A and the driving 1C 80 are different from those of the second embodiment AA, and the plastic frame 9 is omitted to simplify the illustration. However, the structure of the elements is substantially the same as that of FIG. 2A. The differences between the arrangement of the elements in the respective embodiments and the difference in Fig. 2A will be described below. In the four embodiments of the 3A to 3D, the first polarizing film 3 can be an anti-ref 1 ecti ve (AR) type polarizing plate or an anti-reflective anti-glare (anti-reflective & Antiglare, AR-AG) polarizer to increase the anti-reflective property between the front light module and the liquid crystal panel; and the second polarizing film 40 is a brightening condenser (Duai Brigh1; ness

1283323 V. Description of invention (10) ----

Enhancement Film, DBEF) polarizing plate to increase the brightness of the light. In addition, the first polarizing film 30 and the anti-reflecting surface 54 of the front light unit 5 have a gap c'. The width of the gap c can be, for example, 〇·lmm To enhance its anti-reflective effect. In the 3A drawing, except for the above differences, the arrangement of the respective elements is the same as that of the second eight figure. In other words, when applied to the portable electronic device shown in Figures 2B and 2C, the top of Figure 3A is the secondary display screen 224 side, and the lower side is the primary display screen 22 2 side. =3B, the arrangement of the liquid crystal panel group, the front light module, the first polarizing film 3 〇, and the second polarizing film 40 are the same as those in FIG. 2A, but the switching liquid film 70 is disposed on the liquid crystal panel. 1 〇 second surface 14 side. In other words, when applied to the portable electronic device shown in FIGS. 2B and 2C, the top of FIG. 3B is the main display screen 22 2 side, and the lower side is the secondary display screen 224 ^ 3C picture, liquid crystal The arrangement of the liquid crystal panel 10, the front light module, the first polarizing film 30, and the second polarizing film 4 in the panel group is the same as that of FIG. 2A, but the upper and lower sides are opposite. The filter 2 in the liquid crystal panel group is disposed on the second surface 14 side of the liquid crystal panel 10, and the switching liquid crystal film 7 is also disposed on the second surface 14 side. In other words, when applied to the portable electronic device shown in Figs. 2B and 2C, the top of Fig. 3C is the side of the secondary display screen 224, and the lower side is the side of the main display screen 222. In the 3D drawing, the arrangement of the liquid crystal panel 1〇, the front light module, the first polarizing film 30, the second polarizing film 4〇, and the switching liquid crystal film 7〇 in the liquid crystal panel group are both in FIG. 2A. Same, but up and down. And in the LCD panel group

1283323

The younger brother has a face of 1 4 sides. In other words, in the case of a portable electronic device, the sub-display screen 224 under the 3D is provided with the filter 224. The filter 20 is disposed on the liquid crystal panel 1 and is applied to the top of the graph shown in the second and second graphs. In the four embodiments in which the side view of the screen 22 2 side is 0 to 4D, the first polarizing film (10) may be one or two, but the anti-reflection surface 5 of the first polarizing plate 3 and the front light unit 5 There is no retention between the two, and the preparation is 7 士 & 4 4 丨糸 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学 光学Sheet μ then j a brightening concentrating film (Dual Brightness Enhanceme^

FUm^DBEF) polarizer to increase the brightness of the light. In Fig. 4A, the arrangement of the elements is the same as in the figure except for the above differences. In other words, if applied to the portable electronic device shown in Figures 2B and 2C, the top of the screen is the secondary display screen 224 side, and the lower side is the main display screen 2 2 2 side. In the 4β image, the arrangement of the liquid crystal panel group, the front light module, the first polarizing film 3 〇, and the first polarizing film 4 〇 are the same as those in the second drawing, but the switching liquid f film 70 is set. On the second surface 14 side of the liquid crystal panel 1 . In other words,

If applied to the portable electronic device shown in Figures 2B and 2C, 4B

The top of the figure is the main display screen 22 2 side, the lower part is the attack display screen 224 side 0 々 4C picture, the liquid crystal panel 1 in the liquid crystal panel group, the front light module, the first polarizing film 30 and the The arrangement of the two polarizing films 4 is the same as that of FIG. 2A, but the upper and lower sides are opposite. The filter 2 in the liquid crystal panel group is disposed on the second surface 14 side of the liquid crystal panel 10, and the switching liquid crystal film 7 is also disposed on the first surface.

1283323 V. INSTRUCTIONS (12) Surface 14 side. In other words, when applied to the portable electronic device shown in Figs. 2B and 2C, the top of the fourth display screen is the secondary display screen 224 side/lower side and the main display screen 222 side. In FIG. 4D, the arrangement of the liquid crystal panel 1 〇, the front light module, the first polarizing film 30, the second polarizing film 40, and the switching liquid crystal film 7 in the liquid crystal panel group are the same as those in FIG. 2A, but Up and down are opposite. The filter and light sheet 20 in the liquid crystal panel group are disposed on the second surface 14 side of the liquid crystal panel 1 . In other words, when 3⁄4 is applied to the portable electronic display shown in Figures 2B and 2C, the top of the figure is the main display screen 222 side, and the lower side is the secondary display screen 224 side. In the above embodiment, the double-sided liquid crystal display device i uses a transmissive thin film transistor liquid crystal panel as the liquid crystal panel. However, the present invention can also employ a transflective thin film transistor liquid crystal panel. FIG. 5 shows a structure of a double-sided liquid crystal display device 2 according to another embodiment of the present invention, comprising a liquid crystal panel 10, a filter 20, a first polarizing film 3, a second film 40, and a The front light unit 50, the light source unit 60, the switching liquid crystal film 70, and the double-sided liquid crystal display device 2 are driven to display one of the frames Ic = the frame of the above-mentioned element. The double-sided liquid crystal display of Fig. 5 and the double-sided liquid crystal display device of Fig. A have substantially the same component structure and f, except for the junction of the liquid crystal panel, so that L::, 曰 panel 10, The structure, * remaining components are not repeated.曰 i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i And having a plurality of reflectors on the first surface 12

0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd Page 17 1283323 V. Description of the invention (13) 1 6 to reflect part of the light back to the front light module, the right-eye penetration surface 52 and the upward switching The light of the liquid crystal thin J is emitted downward from the double-sided liquid crystal display device 2. In the case of the portable electronic device shown in Fig. 5, when the double-sided liquid crystal display device 2 is not reflected, since the 2B and 2C are above, the top of the fifth figure is the secondary display and the display. The 70-bit LCD screen is the main display screen 22 side. , the screen 224 side, the bottom must be described here, using a semi-transparent, * panel as a liquid crystal panel 1 〇, double-sided, thin film transistor liquid crystal is not limited to Figure 5;:: liquid The device 2 is provided with a thin film transistor liquid crystal panel with a semi-transmissive and semi-reflective second polarizing film 40, which has a characteristic of 2, and thus can be 7 _, indicating a double-sided type; crystal; ;匕第=例. 6A~6D and _~7D ^Sun Fan's other s-a-fighting, ten=day 7D diagrams are arranged by the components of the 32ΓΛ/Λ device 2 different from the 5th figure, so the light source _ The position of the drive 1C 80 is different from that of Fig. 5, and the reflector U of 9, is omitted to simplify the illustration. However, the structure of the components: the province; the first partial diaphragm 40, substantially in contrast to the fifth figure (five). The differences between the configuration of the components in each of the embodiments and the difference in Fig. 5 are explained below. In the four embodiments of the sixth to sixth figures, the first polarizing film (10) may be an anti-reflection (AR) polarizing plate or an anti-reflective anti-glare (AR-Ag) polarizing plate to increase the front optical mode. Anti-reflection characteristics between the group and the liquid crystal panel group. In addition, there is a gap c between the first polarizing film 30 and the anti-reflection surface 54 of the front light unit 5, and the width of the gap c may be, for example, 〇 · l mm to enhance its anti-reflection.

0632-A50196TWf(5.0) ; AU0403064 ; Manual. Ptd Page 18 1283323 V. Description of invention (14) Effect. In Fig. 6A, the arrangement of the elements is the same as that of Fig. 5 except for the above differences. In other words, when applied to the portable device shown in Figures 2B and 2C, the top of Figure 6A is the secondary display screen 224 side, and the lower side is the primary display screen 2 2 2 side. In Fig. 6B, the arrangement of the liquid crystal panel group, the front light module, and the first polarizing film 30 is the same as that of Fig. 5, but the switching liquid crystal film 7 is disposed on the second surface 14 side of the liquid crystal panel 10. In other words, when applied to the portable electronic device shown in Figures 2 and 2C, the top of the (10) figure is the main display screen 222 side, and the lower side is the secondary display screen 224 side. In Fig. 6C, the arrangement of the liquid crystal panel 1A, the front light module, and the first polarizing film 30 in the liquid crystal panel group is the same as that of Fig. 5, but the upper and lower phases are the same. The filter 2 in the liquid crystal panel group is disposed on the liquid crystal panel 丨〇, and on the second surface 14 side, the switching liquid crystal film 7 is also disposed on the second surface i bucket side. In other words, if applied to the portable electric device shown in Figs. 2B and 2C, the top of the sixth display C is the secondary display screen 2 2 4 side, and the lower main display screen 222 side. In Fig. 6D, the arrangement of the liquid crystal panel 1 in the liquid crystal panel group, the front optical mode group, the first polarizing film 30, and the switching liquid crystal film 7 are the same as in the same figure, but the upper and lower sides are opposite. The filter 2 in the liquid crystal panel group is disposed on the second surface 14 side of the liquid crystal panel H). In other words, if applied to the third

SL and other SLIT: In the case of a portable electronic device, the top of the 6D figure is the main side of the screen 2 22 side, and the lower side is the secondary display screen 224 side. In the four embodiments of Figures 7A to 7D, the first polarizing film may be a 0632-A50196TWf (5.0); AU0403064; manual. ptd page 19 1283323 5. Invention description (15) ----- 1 plate, but the anti-reflection surface L: :1 of the first polarizing film 3 〇 and the front light unit 5 不 does not retain the gap ′ but is coated with an optical film layer to increase the Μ 杈 group and the liquid crystal Anti-reflective properties between panel groups. • In the seventh diagram, except for the above differences, the arrangement of each component is the same as in Fig. 5. In other words, if it is applied to the portable electronic device shown in Figures 2 and 2C, the top of the screen is the secondary display screen 224 side, and the lower side is the main display screen 22 2 side. In Fig. 7B, the arrangement of the liquid crystal panel group, the front light module, and the first polarizing film 30 is the same as that of Fig. 5, but the switching liquid crystal film 7 is disposed on the second surface 14 side of the liquid crystal panel 10. In other words, when applied to the portable electronic device of Figs. 26 and 2C, the top of Fig. 7B is the main display screen 222 side, and the lower side is the sub display screen 224 side. In the figure, the arrangement of the liquid crystal panel 1 in the liquid crystal panel group, the front light module, and the first polarizing film 30 are the same as those in Fig. 5, but the upper and lower sides are opposite. The filter 2 in the liquid crystal panel group is disposed on the liquid crystal panel 1 , on the first surface 14 side, and the switching liquid crystal film 7 is also disposed on the second surface 4 side. In other words, when applied to the portable electronic device shown in Figs. 2B and 2C, the top of Fig. 7C is the side of the secondary display screen 224, and the lower side is the side of the display screen 222. In Fig. 7D, the arrangement of the liquid crystal panel 1 in the liquid crystal panel group, the front optical module, the first polarizing film 30, and the switching liquid crystal film 7 are the same as in Fig. 5, but the upper and lower sides are opposite. The filter 2 in the liquid crystal panel group is disposed on the second surface 14 side of the liquid crystal panel 10. In other words, if applied to the portable electronic device shown in Figures 2B and 2C, the top of Figure 7D is

0632-A50196TWf(5.0) ; AU0403064 ; manual. Ptd page 20 1283323 5. Invention description (16) The main display screen 222 side 'below' is the second display rong 224 side. In the above embodiments, the switching liquid crystal, The liquid crystal film of the type, however, the present invention can also employ a liquid crystal film or panel which is polymerized by a polymer. Eight switchable light-transmissive shapes. In the above embodiments and the drawings, the :6° and the drive IC 80 can change the positional configuration according to the double-sided liquid crystal display, and the device size and type are not changed. Revealing form. The embodiments are limited to the above embodiments, and the preferred embodiments of the drawings are as disclosed above. However, it is not intended to be used in the scope of the gods and the scope, and the invention may be modified. The scope is defined as = 0632-A50196TWf (5.0) of the present invention; AU0403064; manual. ptd page 21 1283323 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1A shows a schematic diagram of a conventional double-sided liquid crystal display device; The figure shows a schematic diagram of another conventional double-sided liquid crystal display device; FIG. 1C is a schematic view showing a portable electronic device having a double-sided liquid crystal display device, wherein the clamshell is closed; A schematic diagram showing a portable electronic device having a double-sided liquid crystal display device, wherein the flip cover is opened; FIG. 2A is a schematic view showing a double-sided liquid crystal display device according to an embodiment of the present invention, and FIG. 2B is a display A schematic diagram of a portable electronic device having a double-sided liquid crystal display device in which a flip cover is closed; FIG. 2C is a schematic view showing a portable electronic device having a double-sided liquid crystal display device, wherein 3A is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention; FIG. 3B is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention; FIG. 3D is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention; FIG. 4A is a view showing another embodiment of the present invention; A schematic diagram of a double-sided liquid crystal display device; FIG. 4B is a view showing a double-sided liquid crystal display device according to another embodiment of the present invention

0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd page 22 1283323 Schematic diagram of a simple illustration; FIG. 4C is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention, FIG. 4D A schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention; FIG. 5 is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention; and FIG. 6A is a view showing another embodiment of the present invention. FIG. 6B is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention; and FIG. 6C is a double-sided liquid crystal display device according to another embodiment of the present invention; 6D is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention; FIG. 7A is a schematic view showing a double-sided liquid crystal display device according to another embodiment of the present invention, and FIG. 7B is a schematic view; A schematic diagram showing a double-sided liquid crystal display device according to another embodiment of the present invention; and a seventh embodiment showing a double-sided liquid crystal display device according to another embodiment of the present invention, and a 7D Shows another embodiment of the present invention, the double-sided embodiment of the liquid crystal display apparatus of the schematic set.

0632-A50196TWf(5.0) ; AU0403064 ; Instruction manual .ptd Page 23 1283323 Brief description of the diagram [Description of main components] 1, 2~ double-sided liquid crystal display device; 10~ transmissive 溥 film transistor liquid crystal panel, 10 ~ semi-transflective thin film transistor liquid crystal panel, 1 2 ~ first surface; 14 ~ second surface; 1 6 ~ reflector; 2 0 ~ filter; 3 0 ~ first polarizing film; 40 ~ Second polarizing film; 50~ front light unit; 5 2~ reflective penetration surface; 54~ anti-reflection surface; 6 0~ light source group; 70~ switching liquid crystal film; 8 0~ drive IC; 100, 100' ~ double-sided liquid crystal display device; I 0 2 ~ light source group; 10 4 ~ light guide plate; 110 ~ first screen; 11 1 ~ first liquid crystal panel; II 2 ~ first light source group; ~ first reflector;

0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd page 24 1283323 simple illustration

114- 'First light guide plate 1 115-' optical film 116 - first diffuser plate 9 - 117- • % lower polarizing film; 118 ~ first color light film; 119 ~ first upper polarizing film; 120- The second screen 9 121 - the second liquid crystal panel 1 122 - the second light source group 123 - the second reflection plate 124 - the second light guide plate 125 - the optical film 126 - the second diffusion plate 9 127 - the second lower polarizing film 128 ~ Second color light film 129~ Second upper polarizing film 130~ Plastic frame 9 2 0 0~ Portable electronic device; 21 0~ Body, 22 0~ 掀 cover 9 22 2~ Main display screen 9 2 2 4~ times display screen 0 0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd第25页

Claims (1)

£83323 #, the scope of application for patents] · A double-sided liquid crystal display device, including · · optical module, including a front light unit (ίron tiig * ht un it, a j and a light source group, the front light unit The light source group is disposed on one side of the front light unit; =, the liquid crystal panel group is disposed on the anti-reflection surface side of the front light unit, ^ liquid crystal panel group The liquid crystal panel j is disposed on the first surface of the front light module and opposite to the surface of the front light module, and the light film is disposed on the first surface of the liquid crystal panel Or the second surface; a first polarizing film disposed between the front light module and the liquid crystal panel; and a switching liquid crystal film disposed on the second surface side of the liquid crystal panel or disposed on the front light The reflective liquid crystal film is switched between the first state and the second state. When switching to the state, the switching liquid crystal film is transparent, when switching to The second shape In the state of the invention, the switching liquid crystal film is opaque. The double-sided liquid crystal display device according to claim 1, wherein the liquid crystal panel is a transmissive thin film transistor liquid crystal panel. The double-sided liquid crystal display device according to claim 1, wherein the liquid crystal panel is a half-transparent semi-reflective thin film transistor liquid crystal panel. 4. The double-sided liquid crystal according to the above-mentioned claim. a display device, wherein the switching liquid crystal film is a polymer dispersed liquid crystal (PDLC) 〇 0632-A50196TWf(5.0) ; AU0403064 ; Instruction manual .ptd Page 26 1283323 VI. Patent application scope 5 · If the patent application scope is the first item of the double-sided liquid crystal display device, the filter is a color filter. Light film. 6. The double-sided liquid crystal display device as claimed in claim i wherein the first polarizing film is an anti-reflective (AR) polarizing plate. 7. The double-sided liquid crystal display device according to claim 1, wherein the first polarizing film is an anti-ref lective & ant iglare (AR-AG) type polarizing plate. The double-sided liquid crystal display device according to claim 1, wherein an optical film layer is coated between the first polarizing film and the anti-reflection surface of the front light unit. The double-sided liquid crystal display device of claim 1, further comprising a second polarizing film disposed on the second surface side of the liquid crystal panel. The double-sided liquid crystal display device of claim 9, wherein the second polarizing film is a Dual Brightness Enhancement Film (DBEF)-type polarizing plate. The double-sided liquid crystal display device of claim 1, wherein the first polarizing film has a gap with the anti-reflection surface of the front light unit. 12) A portable electronic device comprising: a body; and a cover rotatably disposed on the body, the cover comprising a double-sided liquid crystal display, wherein the double-sided liquid crystal display device comprises : 0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd page 27 1283323 ~------------- VI. The scope of application for patents is like an optical module, including a front light unit (fr οn 11 And a light source group, the front light unit has a reflection penetration surface and a reflection surface, the light source group is disposed on one side of the front light unit; and a liquid crystal panel group is disposed on the The anti-reflection surface side of the front light unit, the liquid liquid panel comprises a liquid crystal panel and a filter, the liquid crystal panel having a first surface facing the front light module and opposite to the front light module The surface of the liquid crystal panel is disposed on the first surface or the second surface of the liquid crystal panel; a first polarizing film disposed between the front light module and the liquid crystal panel; and a switching liquid crystal a film disposed on the second surface side of the liquid crystal panel or A is disposed on the reflective penetration surface side of the front light unit, wherein the switching mode, the crystalline film is switched between the first state and the second state, when When switching to the state of =, the switching liquid crystal film is transparent When switching to the second state, the switching liquid crystal film is opaque lines. 13. The portable electronic device of claim 1, wherein the switching liquid crystal film is disposed on a side of the cover opposite to the body. The portable electronic device of claim 12, wherein the liquid crystal panel is a transmissive thin film transistor liquid crystal panel. The portable electronic device of claim 2, wherein the liquid crystal panel is a half-transmissive semi-reflective thin film transistor liquid crystal surface. 6 · As described in claim 12 Portable electronic device 1283323 VI. Patent Application Range The switching liquid crystal film is a polymer dispersed liquid crystal (PDLC). The portable electronic device of claim i, wherein the filter is a color light film. The portable electronic device of claim 12, wherein the first polarizing film is an anti-ref lective (AR) polarizing plate. The portable electronic device of claim 12, wherein the first polarizing film is an anti-reflective anti-glare (AR-AG) polarizing plate. The portable electronic device of claim 12, wherein an optical film layer is coated between the first polarizing film and the anti-reflective surface of the front light unit. The portable electronic device of claim 12, further comprising a second polarizing film disposed on the second surface side of the liquid crystal panel. The portable electronic device of claim 21, wherein the second polarizing film is a Dual Brightness Enhancement Fi 1 m (DBEF) polarizing plate. The portable electronic device of claim 12, wherein the first polarizing film has a gap between the anti-reflective surface of the front light unit. 0632-A50196TWf(5.0) ; AU0403064 ; manual .ptd第29页