TWI272438B - View angle adjustable liquid crystal display (LCD) - Google Patents

Abstract

A view angle adjustable liquid crystal display (LCD) is provided. The LCD includes a backlight module, a first polarizer, a second polarizer, a LCD panel and a view angle adjustable device. The first polarizer, the second polarizer, the LCD panel and the view angle adjustable device are deposited on the backlight module. The LCD panel and the view angle adjustable device are deposited between the first polarizer and the second polarizer. The view angle adjustable device includes a first transparent substrate, a second transparent substrate, a first transparent electrode, a second transparent electrode, a first alignment film, a second alignment film and a liquid crystal layer. The first transparent electrode is deposited on the first transparent substrate. The first alignment film is deposited on the first transparent electrode. The liquid crystal layer is deposited on the first alignment film. The second alignment film is deposited on the liquid crystal layer. The second transparent electrode is deposited on the liquid crystal layer and the second alignment film is deposited on the bottom surface of the second transparent electrode. The second transparent substrate is deposited on the liquid crystal layer. The liquid crystal layer is sealed between the first transparent substrate and the second transparent substrate. The second transparent electrode is deposited on the bottom surface of the second transparent substrate.

Description

1272438 Since the backlight of the liquid crystal display 10 usually comes from a backlight module, the current parallel backlight module does not provide a true parallel backlight. Even if the liquid crystal display 1 is in the narrow viewing angle mode shown in FIG. 1A, in the case where the actual non-real parallel backlight is incident on the liquid crystal display panel 13, the bystander will still see the liquid crystal display when the squint liquid crystal display 1 is squinted. The picture "face" displayed on the panel 13 prevents the user from actually maintaining personal privacy and maintaining high confidentiality of personal data. Further, when the polymer-dispersed liquid crystal device U is in a scattering state, since the polymer-dispersed liquid crystal device u reflects a portion of the parallel backlight 12a, the brightness of the liquid crystal display 10 is lowered, which affects the operation of the liquid crystal display 1肇· Quality is very big. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a liquid crystal display with an adjustable viewing angle. The design of the viewing angle adjusting device can surely allow the user to arbitrarily switch the viewing angle mode of the liquid crystal display Is between the wide viewing angle mode and the narrow viewing angle mode, thereby achieving the purpose of adjusting the viewing angle of the liquid crystal display. In this way, not only can the privacy of the individual be protected, but also the high confidentiality of the data can be maintained, and the practicality of the liquid crystal display can be greatly improved. In addition, when the user switches the viewing angle mode of the liquid crystal display, the contrast and brightness of the liquid crystal display are not changed, so that the user of the front view liquid crystal display does not notice the change of the contrast and brightness of the liquid crystal display, and maintains the good performance of the liquid crystal display. Operational quality. According to the object of the present invention, a liquid crystal display with adjustable viewing angle is provided, comprising a backlight module, a first polarizing plate, a second polarizing plate, a liquid crystal display panel and a viewing angle adjusting device. The first polarizing plate, the liquid crystal display panel, the viewing angle adjusting device and the second polarizing plate are all disposed on the backlight module, and the liquid crystal display panel and the viewing angle adjusting device are disposed between the first polarizing plate and the second polarizing plate. on. Angle adjustment

TW1713PA-C 8 1272438 Two 35th form an acute angle between the surfaces of the film 30a to be arranged in a half inverted state as shown in Fig. 4B. When the observer faces the display 2〇, the difference Δηη of the refractive indices of the long axis and the short axis of the liquid crystal molecules 3丨& corresponding to the light viewed by the observer is still 〇' μ When the observer looks at the display 汕, the phase difference Δ nd is 〇. At this time, the viewing angle adjusting device of the fourth drawing will not change the polarization state of the light passing through the liquid crystal display panel 23 of FIG. 2, that is, the contrast and brightness of the screen of the liquid crystal display panel 23 will not be changed, and the observer can The face displayed by the liquid crystal display panel 23 is observed while facing the display 20. When the observer observes the angle at the azimuth of the third 〇9〇 or 27〇, the angle of the liquid crystal molecules corresponding to the light seen by the observer is the long axis and the short axis of the liquid crystal molecule. The difference in refractive index ^ is also G, and the observer can observe the face displayed by the liquid crystal display panel 23 when the squint is displayed at the azimuth angle of 90 or 270 。. However, when the observer displays H 2G at an azimuth angle of 第 or 18 degrees at an observation angle, the refraction of the major axis and the minor axis of the liquid crystal molecule 31a corresponding to the light seen by the observer is observed. The difference Δη of the rate is not equal to 〇, indicating that the viewing angle adjustment device 24 provides a phase difference Δικί that is not equal to G when the observer is in the azimuth angle or the 18 (degree) squint display. At this time, the viewing angle adjusting device 24 will change the polarization state of the button passing through the liquid crystal display panel 23, so that the observer can not observe the illusion of the liquid crystal display panel when the observer squints the display 20 at an azimuth angle or 180 degrees. surface. Therefore, when the first differential pressure V1 is applied between the first transparent electrode 29a and the second transparent electrode 29b of the fourth drawing, the display 2 is in a narrow viewing angle, and the observer of the front view display 20 can still The viewer can see the picture, and the observer from the azimuth, 90 and 270 degree squint display 20 can see the face, but the observer from the direction _ angle 〇 and the 180 degree squint display 20 will not be able to see the picture. Achieve the purpose of narrowing the angle of view. a As shown in Fig. 5, when the first transparent electrode 29a and the second transparent TW1713PA-C 13 1272438: == the second factory is worse than V2, the liquid crystal layer of the liquid crystal layer 3i has a two-direction (10) azimuth angle of 9 degrees. Lying, that is, the longest picture of the liquid crystal molecule 3U = 1, 'the surface of the pair of amines to the surface of the amine 3〇a' is arranged in a lying state, as in the fifth liquid crystal mode of the liquid crystal modal layer The saturation voltage (ie, the first transparent electrode 29a = t) ^ VS hopper V2 is greater than (10), and about equal. 2 7V1 is preferably ~ in the present embodiment, the first - fortune. ::: two, due to observation Liquid crystal molecules corresponding to the light seen by the person 31a·

The difference between the square of the crying t = the ratio of the chirp rate ^ is 0, the observer can be displayed by the front view · the side of the 5B; the vertical: t is the surface displayed by the crystal display panel 23. When the observer is at 00 〇, 180 or 270 degrees at 20 o'clock, the angle of view is squint display = the difference is the difference IS is also 〇, the observer can be in squint display 20 =: crystal display: display on board 23 After the face. Therefore, when the second differential pressure V2 is applied between the first and the lower electrodes of the fifth embodiment,

Look at the second: the second wide viewing angle mode, the front view and the squint display can be seen in the face of the display. In the lower case, the liquid crystal molecules 3 la of the liquid crystal layer 31 have characteristics as described above, but the liquid crystal molecules of different liquid crystal layers are in the electric field 29a and the second: Γ: characteristics will It is different. For example, when the pressure difference is not applied between the first transparent electrode and the second transparent electrode, the liquid crystal layer of the liquid crystal layer is in a flat state, and the display is in a wide viewing angle mode. In addition, when the Japanese: "the heart and the second transparent electrode 29b are applied - the fifth pressure difference liquid layer of the liquid crystal molecules will be,, L; L-state, the display is strict - the direction of the direction is arranged in half Inverted, ground; In addition, when a sixth voltage difference is applied between the first transparent electrode 29a and the TW1713 C (051004) CRF.doc 14 1272438 and the transparent electrode 29b, the liquid crystal molecules of the liquid crystal layer can be arranged in an upright state, and the display is in a state. Wide viewing angle mode. Wherein, the fifth = difference is less than the sixth pressure difference.凊 Refer to FIGS. 6A-6B, FIG. 6A is a comparison contour diagram showing the state of the display of FIG. 2 in the first wide viewing angle mode, and FIG. 6B is a view showing the display of the second drawing in the narrow viewing angle mode. Contrast contour map of the state. In Figures 6a to 6B, the contrast contours are concentric circles from the inside out, and the comparison values represented by the order are 2000, 1〇〇〇, 500, 100, 50, 20, and 10, and the outermost circle The comparison value represented by the circle is 10. In addition, the view angle is defined as the angle of observation when the ratio of Xinxin is equal to 10. In Fig. 6A, if the comparison value is equal to 1 〇, it can be found that the viewing angles of the display 2 in the first wide viewing angle mode are more than 80 degrees (80 degrees) at azimuth angles of 90, 90, 180, and 270 degrees. In Fig. 6B, the viewing angle of the display 20 in the narrow viewing angle mode at the azimuth angles of 90 and 270 degrees and the viewing angle of the display 2 in the first wide viewing angle mode of Fig. 6A are at the azimuth angles of 9 〇 and 27 〇 degrees. The difference is not big, but the display 2 in the narrow viewing angle mode is in azimuth

The angle of view of the corners and 180 degrees is reduced from 80 degrees to 18 degrees. In addition, when the observer faces the display 20, it is observed that the contrast of the display 20 in the first wide viewing angle mode and the narrow viewing angle mode is almost the same, no difference, indicating that the display 2 does not change the observer's face in any viewing mode. The contrast and brightness of the picture seen on display 20. Please refer to FIG. 7A to FIG. 7B. FIG. 7A is a diagram showing the driving voltage (V) of the liquid crystal display panel and the light transmittance of the liquid crystal display with the viewing angle adjustable when the viewer is facing the display in front view. The right angle coordinate relationship of the transmittance (τ) is shown in FIG. 7B as the driving voltage (V) of the liquid crystal display panel and the light of the liquid crystal display with the viewing angle adjustable when the observer observes the display in the narrow viewing angle mode. The right angle coordinate relationship of the penetration rate (T). In Figures 7A to 7B,

TW1713PA-C 1272438 13B is shown. At this time, the phase difference adjusting means 24 and 64 provide a phase difference Δη (^ G when the observer faces or squints the display 60, indicating that the polarization state of the light passing through the viewing angle adjusting devices 24 and 64 will not be adjusted by the viewing angle. The device and 64 are changed such that the display 60 is in a first wide viewing angle mode. As shown in FIGS. 4A and 13A, when the first differential pressure V1 is applied between the first transparent electrode 2 and the second transparent electrode 29b, When no pressure difference is applied between the third transparent electrode (four) and the fourth transparent electrode 69b, the liquid crystal molecules 31& of the liquid crystal layer 31 are tilted along the first alignment direction 32a to be arranged in a first half-reversed state, such as 4B. As shown, the liquid crystal molecules 71a of the liquid crystal layer 71 are arranged in an upright state as shown in Fig. 13. At this time, the viewing angle adjusting device 24 is provided when the observer squints the display 60 at an azimuth angle of 〇 or 18 degrees. The phase difference value Δη (1 is not 〇, the viewing angle adjusting device 24 will change the polarization state of the light passing through the liquid crystal display panel 23, so that the observer cannot observe the liquid crystal display when squinting the display 60 at the azimuth angle of 0 or 180 degrees. The screen displayed on panel 23 However, the polarization state of the light passing through the viewing angle adjusting device 64 will not be changed by the viewing angle adjusting device 64, and the display 6 is in a first narrow viewing angle mode. As shown in the third and fourth figures, when the first transparent When a pressure difference is not applied between the electrode 29a and the second transparent electrode 29b, and a third pressure difference V3 is applied between the third transparent electrode 69a and the fourth transparent electrode 69b, the liquid crystal molecules 71a of the liquid crystal layer 71 are along The third alignment direction 62a is tilted and arranged in a second half-down state. As shown in FIG. 14B, the liquid crystal molecules 3丨a of the liquid crystal layer 31 are arranged in an upright state, as shown in FIG. 3B. At this time, the viewing angle is adjusted. The phase difference Δη provided by the device 64 when the observer squints the display 60 at an azimuth angle of 9 〇 or 270 degrees (1 is not 〇, and the polarization state of the light passing through the viewing angle adjusting device 64 will be changed by the viewing angle adjusting device 64, When the observer squints the display 6 at an azimuth angle of 90 or 270 degrees, the face displayed by the liquid crystal display panel 23 cannot be observed. However, the viewing angle adjusting device 24 does not change the TW1713PA-C 20 1272438 through the liquid crystal display panel 23 Polarization state of light The display 6 is in a second narrow viewing angle mode. As shown in FIGS. 4A and 14A, a first differential pressure VI is applied between the first transparent electrode 29a and the second transparent electrode 29b, and the third transparent When the third pressure difference V3 is applied between the electrode 69a and the fourth transparent electrode 69b, the liquid crystal layer 31a of the liquid crystal layer 31 is tilted along the first alignment direction 32a to be arranged in the first half-reverse state, as shown in FIG. 4B. Further, the liquid crystal molecules 7U of the liquid crystal layer 71 are tilted in the third alignment direction 62a to be arranged in the second half-inverted state as shown in Fig. 14B. At this time, the viewing angle adjusting device 24 is in the azimuth angle of the observer. Or, the phase difference value Δικ1 provided by the squint display 6 is not 〇, and the viewing angle adjusting device 24 will change the polarization state of the light passing through the liquid crystal display panel 23. Moreover, the viewing angle adjustment device is configured such that the phase difference A nd provided by the observer when squinting the display 60 at an azimuth angle of 90 or 270 degrees is not 〇, and the polarization state of the light passing through the viewing angle adjusting device 64 is to be viewed by the viewing angle adjusting device 64. change. Therefore, when the observer squints the display 60 at the azimuth angles, 9 〇, ι 8 〇, and 27 degrees, the screen displayed by the liquid crystal display panel 23 cannot be observed, and the display 60 is in a third narrow viewing angle mode. As shown in FIGS. 5A and 15A, a second voltage difference V2 is applied between the first transparent electrode 29a and the second transparent electrode 29b, and a third is applied between the third transparent electrode and the fourth transparent electrode 69b. When the voltage difference V4 is four, the liquid crystal knives 3 la of the liquid crystal layer 3 are tilted toward the azimuth angle 9 degrees along the first alignment direction 32a to be arranged in the first lying state as shown in the figure. Further, the liquid crystal layer of the liquid crystal layer 71, 71a is tilted toward the azimuth angle along the third alignment direction 62a to be arranged in a first y-flat shape, as shown in Fig. 15B. At this time, the phase difference adjustments And, provided by the viewing angle adjusting devices 24 and 64 when the observer is facing or squinting the display 6〇, are 〇, and the polarization state of the light that passes through the viewing angle adjusting devices 24 and 64 will not be affected by the viewing angle adjusting device. The 24 and 64 changes cause the display 6 to be in a second wide viewing angle mode.

TW1713PA-C 21 1272438 Based on the above, as long as the liquid crystal layers 31 and 71 are flat 6. Will be in the - wide viewing angle mode. Further, as long as the liquid crystal layer 3 =: = not: is in a half-down state, the display 60 will be in a narrow viewing angle mode. And 71 or one of the reeds: two' although the saturation voltage of the liquid crystal mode of the liquid crystal layer 71 is Vsat, the fourth ^4 system is greater than Vsat ' and the third differential pressure V3 is approximately equal to 〇5 w 〇8 fine, brother The second Fortune V3 is preferably 〇7Vsat. In the present embodiment, the third differential pressure is: the fourth differential pressure V4, which is not more than 2.5 volts (7) and 5 volts. However, those skilled in the art can also understand that the techniques of the present embodiment are not limited thereto. For example, the first polarizing plate and the viewing angle adjusting device 64 may be provided with a first compensation film and a second partial thickness 25 and A second compensation film can be disposed between the viewing angle adjusting devices 24. In the present embodiment, although the steering simplification of the liquid crystal molecules 7u of the liquid crystal layer 71 under the electric field change is as described above, the characteristics of the liquid crystal molecules of the different liquid crystal layers under the electric field change will be different. For example, when no pressure difference is applied between the first transparent electrode 69a and the second transparent electrode 69b, the octagonal system of the liquid crystal layer can be arranged in a lying state. Further, when a seventh pressure difference is applied between the first transparent electrode 6 and the first electrode 69b, the liquid crystal molecules of the liquid crystal layer are arranged in a half-reversed state along the third alignment direction 62a. Further, when a first person pressure difference is applied between the first transparent electrode 69 & and the first transparent electrode 69b, the liquid crystal molecules of the liquid crystal layer can be arranged in an upright state. Wherein, the seventh pressure difference is less than the eighth pressure difference. When the liquid crystal molecules of the liquid crystal layer of the viewing angle adjusting device are in a flat or upright state, the display is in a wide viewing angle mode. As long as at least one of the liquid crystal layers of the liquid crystal layer of the two viewing angle adjusting device is in a half-reverse state, the display is in a narrow viewing angle mode, regardless of whether the liquid crystal molecules of the liquid crystal layer of the other viewing angle adjusting device are lying, standing upright or Half-down state. In addition, the present invention can provide a method for driving a liquid crystal display with adjustable viewing angle. The liquid crystal display with adjustable viewing angle includes a first viewing angle adjusting device and a second TW1713PA-C 22 1272438 viewing angle adjusting device, and the viewing angle adjusting device has a liquid crystal Mode saturation voltage (Vsat). In this method, first, a first wide viewing angle mode is implemented, and the first viewing angle adjusting device and the second viewing angle adjusting device respectively generate a first pressure difference and a second pressure difference, wherein the first pressure difference and the second pressure difference The difference is OVsat or greater than Vsat. And performing a narrow viewing angle mode, wherein the first viewing angle adjusting device and the second viewing angle adjusting device respectively generate a first differential pressure and a third differential pressure, and the first viewing angle adjusting device and the second viewing angle adjusting device respectively generate a third The pressure difference and the second pressure difference, and the first viewing angle adjusting device and the second viewing angle adjusting device respectively generate a third pressure difference and a fourth pressure difference. The third differential pressure and the fourth differential pressure are 0.5 Vsat to 0.8 Vsat, and the third differential pressure and the fourth differential pressure are preferably 〇.7 Vsat. Embodiment 5 Referring to Figure 16, there is shown a side view of a liquid crystal display having an adjustable viewing angle in accordance with Embodiment 5 of the present invention. The display 80 of the present embodiment is different from the display 60 of the fourth embodiment in that the viewing angle adjusting device 64 is located between the viewing angle adjusting device 24 and the second polarizing plate 25. The viewing angle adjusting device 64 is disposed on the fourth substrate surface 28b such that the sixth substrate surface 67b faces the fourth substrate surface 28b, and the second polarizing plate 25 is disposed on the fifth surface 25a facing the eighth substrate surface 68b. Above the eighth substrate surface 68b. It is also apparent to those skilled in the art that the technology of the embodiment is not limited thereto. For example, a first compensation film, a second polarizing plate 25, and a viewing angle may be disposed between the first polarizing plate 22 and the liquid crystal display panel 23. A second compensation film can be disposed between the adjustment devices 64. Embodiment 6 Referring to Figure 17, there is shown a side view of a liquid crystal display having an adjustable viewing angle in accordance with Embodiment 6 of the present invention. The display 90 of the present embodiment and the fourth embodiment of the TW1713PA-C 23 1272438 are tilted at an azimuth angle of 90 degrees to form a first half-reverse state. And the liquid crystal molecules 111a of the liquid crystal layer ill of another portion between the second alignment region 112b and the fourth alignment region U3b are tilted toward the azimuth angle along the second alignment direction i〇3a to be arranged in a second half. The status is as shown in Figure 2B. At this time, the viewing angle adjusting device 104 does not provide a phase difference Δ nd when the observer squints the display 1 于 at the azimuth angles 〇, 9 〇, 18 〇, and 270 degrees, and the angle adjusting device 1 〇 4 The polarization state of the light passing through the liquid crystal display panel 23 is changed so that the observer can not observe the screen displayed by the liquid crystal display panel 23 when the viewer squints the display wo at azimuths of 0, 90, 180, and 270 degrees. Therefore, the display 1 is in a narrow viewing angle mode. As shown in FIG. 21A, when a second differential pressure V2 is applied between the first transparent electrode i〇9a and the second transparent electrode 109b, a portion of the liquid crystal layer between the first alignment region U2a and the third alignment region 113a is formed. The liquid crystal molecules 1Ua of the ιη are tilted at an azimuth angle of 90 degrees along the first alignment direction 102a to be arranged in a first lying state. And the liquid crystal molecules 111a of the liquid crystal layer 111 of the other portion between the second alignment region 112b and the fourth alignment region ii3b are tilted to the azimuth angle along the second alignment direction 1〇3a to be arranged in a second lying position. State, as shown in Figure 21β. At this time, the phase difference device Δ nd provided by the viewing angle device 104 when the observer faces or squints the display j 为 is 0, and the viewing angle adjusting device 1 〇 4 does not change the polarization of the light passing through the liquid crystal display panel 23 . The state of the display 1 is in a second wide viewing angle mode. In addition, when the saturation voltage of the liquid crystal mode of the liquid crystal layer 111 is Vsat, the second differential pressure V2 is greater than Vsat, and the first differential pressure V1 is approximately V5Vsat~〇8Vsat, and the second differential pressure V1 is preferably 〇 .7Vsat. In the present embodiment, the first differential pressure V1 ' and the second differential pressure V2 are 2.5 volts (V) and 5 volts, respectively. It is to be understood by those skilled in the art that the technology of the embodiment is not limited thereto. For example, a first compensation film and a second polarizing plate may be disposed between the first polarizing plate U and the liquid crystal display panel 23.

TW1713PA-C 26 1272438 Embodiment VIII. The month m 22 is a side view of a liquid crystal display that is adjustable in accordance with the perspective of the practitioner of the present invention. The display 12 of the present embodiment is different from the display of the embodiment: the liquid crystal display panel 23 is located between the viewing angle adjusting device 104 and the second polarizing plate 25. The viewing angle adjusting device ι 4 is disposed on the second surface (10) such that the second surface H) 7b faces the second surface 22b, the crystal display panel 23 is second, and the Le 甶 23a surface The fourth substrate surface 108b is disposed on the surface of the fourth substrate, and the first polarizing plate 25 is disposed on the fourth surface 23b so as to face the fourth surface m. It is also apparent to those skilled in the art that the technique of the present embodiment is not limited thereto. For example, the first compensation film and the second polarizing plate 25 and the liquid crystal may be disposed between the first polarizing plate 22 and the viewing angle adjusting device 104. A second compensation film may be disposed between the display panels 23. Embodiment 9 Referring to Figure 23, (4) is a side view of a liquid crystal display with adjustable viewing angle according to Embodiment 9 of the present invention. The display 13 of the present embodiment The difference from the display 20 of the first embodiment is the design of the viewing angle adjusting device 134, which is disposed between the liquid crystal display panel 23 and the second polarizing plate 25. As shown in Fig. 24A, the viewing angle adjusting device 134 The first transparent substrate 137, a first transparent substrate 138, a first insulating layer 145a, a second insulating layer 145b, a first transparent electrode 139a, a second transparent electrode 139b, and a first alignment film 14 are included. a second alignment substrate 14b and a liquid crystal layer 141. The first transparent substrate 137 has a first substrate surface 137a and a second substrate surface 137b, and the second substrate surface 137b faces the fourth image. Face 23b The first insulating layer is disposed on the first substrate surface 137a and has a first opening pattern, as shown in FIG. 24. The first opening pattern 146a may be a letter, a trademark or a logo, in the present embodiment T W1713 C (051004 )CRF. doc 28

Claims (1)

10. Patent application scope: 1. A liquid crystal display with adjustable viewing angle, comprising: a backlight module; a first polarizing plate and a second polarizing plate disposed on the backlight module; adjusting with a first viewing angle The device and a liquid crystal display panel are disposed between the first polarizing plate and the second polarizing plate, and the first viewing angle adjusting device comprises: a first transparent substrate; a first transparent electrode disposed on the first transparent substrate; a first alignment film disposed on the first transparent electrode; a first liquid crystal layer disposed on the first alignment a second alignment film disposed on the first liquid crystal layer; a second transparent electrode disposed on the first liquid crystal layer, wherein the second alignment film is disposed on the lower surface of the second transparent electrode ;and A second transparent substrate is disposed on the first liquid crystal layer, and the first transparent substrate is sealed with the first transparent substrate, and the second transparent electrode is disposed on a lower surface of the second transparent substrate. 2. The liquid crystal display of claim 1, wherein the liquid crystal display panel is disposed between the first polarizing plate and the first viewing angle adjusting device. 3. The liquid crystal display of claim 2, further comprising: a first compensation film disposed between the first polarizing plate and the liquid crystal display panel; and a second compensation film disposed on the second compensation film Between the second polarizing plate and the first viewing angle adjusting device. 4. The liquid crystal display of claim 2, wherein the light transmission axis of the first polarizer is perpendicular to the light transmission axis of the second polarizer, the first TW1713C (051004) CRF. Doc 45 1272438 \ ........"". The film comprises a first alignment zone and a second alignment zone, the second alignment film comprising a third alignment zone and a fourth alignment zone The first alignment area and the second alignment area respectively correspond to the third alignment area and the fourth alignment area. The alignment direction of the first alignment area is parallel or perpendicular to the light transmission axis of the first polarizing plate. The alignment direction of the second alignment region is opposite to the alignment direction of the first alignment region, and the alignment direction of the third alignment film is opposite to the alignment direction of the first alignment region, and the alignment direction of the fourth alignment region is It is opposite to the alignment direction of the two divisions. 5. The liquid crystal display according to claim 2, wherein the light transmission axis of the first polarizer is perpendicular to the light transmission axis of the second polarizer, and the alignment direction of the first alignment film is The light guiding axis of the first polarizing plate is parallel or perpendicular, and the alignment direction of the first alignment film is opposite to the alignment direction of the second alignment film. The liquid crystal display further comprises: a second viewing angle adjusting device, which is disposed on Between the first polarizing plate and the liquid crystal display panel, the second viewing angle adjusting device comprises: a second transparent substrate; a second transparent electrode disposed on the third transparent substrate; a third alignment film, And disposed on the third transparent electrode, the alignment direction of the third alignment film is perpendicular to the alignment direction of the first alignment film; a second liquid crystal layer disposed on the third alignment film; a fourth alignment film, And disposed on the second liquid crystal layer, the direction of the fourth alignment film is opposite to the alignment direction of the third alignment film; and “the second transparent electrode is disposed on the second liquid crystal layer, and the fourth alignment System settings The lower surface of the fourth transparent electrode and the fourth transparent substrate are disposed on the second liquid crystal layer, and the substrate seals the second liquid S, and the second one is sealed by the B s L. The transparent electrode is disposed in the liquid crystal display according to the second aspect of the invention, wherein the first polarizing plate has a light-transparent axis system and a liquid crystal display according to claim 2, wherein the first polarizing plate is The light of the second polarizing plate is perpendicular to the axis, and the alignment direction of the first alignment knee is parallel or perpendicular to the light transmission axis of the first polarizing plate, and the alignment direction of the first alignment film is associated with the second alignment direction. The liquid crystal display device further includes: a second viewing angle adjusting device disposed between the second polarizing plate and the first viewing angle adjusting device, wherein the second viewing angle adjusting device comprises: a third transparent substrate; the second transparent electrode is disposed on the third transparent substrate; the first alignment film is disposed on the third transparent electrode, and the alignment direction of the third alignment film is coupled to the first alignment film Vertical alignment direction; a first liquid crystal And disposed on the third alignment film; the fourth alignment film is not disposed on the second liquid crystal layer, and the alignment direction of the fourth alignment film is opposite to the alignment direction of the third alignment film; ^ > a transparent electrode disposed on the second liquid crystal layer, wherein the fourth alignment film is disposed on a lower surface of the fourth transparent electrode; The fourth transparent substrate is placed on the second liquid crystal layer, and the second liquid crystal layer is sealed with the third transparent substrate. The fourth transparent electrode is disposed on the lower surface of the fourth transparent substrate. 7. The liquid crystal display of claim 1, wherein the liquid crystal display panel is disposed between the second polarizing plate and the first viewing angle adjusting device. 8. The liquid crystal display of claim 7, further comprising: a first compensation film disposed between the first polarizing plate and the first viewing angle adjusting device; and the m compensation film is disposed at Between the second polarizing plate and the liquid crystal display panel. The liquid crystal display of claim 7, wherein the light transmission axis of the first polarizing plate and the light of the second polarizing plate penetrates The first alignment film includes a first alignment area and a second alignment area, and the second alignment film includes a second alignment area and a fourth alignment area, the first alignment area and the second alignment area Corresponding to the third alignment region and the fourth alignment region, respectively, the alignment direction of the first alignment region is parallel or perpendicular to the light transmission axis of the first polarizing plate, and the alignment direction of the second alignment region is The alignment direction of the first alignment layer is opposite, and the alignment direction of the third alignment film is opposite to the alignment direction of the first alignment region, and the alignment direction of the fourth alignment region is opposite to the alignment direction of the second alignment region. The liquid crystal display of claim 7, wherein the light transmission axis of the first® polarizer is perpendicular to the light transmission axis of the second polarizer, and the alignment direction of the first alignment film The alignment direction of the first alignment film is opposite to the alignment direction of the second alignment film, and the liquid crystal display further comprises: a second viewing angle adjusting device The first viewing angle adjusting device is disposed between the first polarizing plate and the first viewing angle adjusting device, and the second viewing angle adjusting device comprises: a third transparent substrate; a third alignment electrode is disposed on the third transparent substrate; a third alignment film is disposed on the third transparent electrode, and the first alignment direction is aligned with the first alignment film a second liquid crystal layer disposed on the third alignment film; a fourth alignment film disposed on the second liquid crystal layer, wherein the alignment direction of the fourth alignment film is opposite to the alignment direction of the third alignment film a fourth transparent electrode disposed on the second liquid crystal layer, wherein the fourth alignment film is disposed on the lower surface of the fourth transparent electrode; and the fourth transparent substrate is disposed on the second liquid crystal layer, and The third transparent 48 TW1713C (051004) CRF.doc 1272438 is repaired (the first transparent electrode system is sealed on the substrate). The fourth transparent electrode system is disposed on the lower surface of the fourth substrate. The liquid crystal display of claim 1, wherein the optical axis of the first polarizing plate is perpendicular to a light transmitting axis of the second polarizing plate, and the alignment direction of the first alignment film is Light penetration of the first polarizer Parallel or perpendicular, - the alignment direction of the alignment film is opposite to the alignment direction of the second alignment film. / 曰 12. The liquid 曰曰 display as described in the scope of claim 2, 3, 6, 7, 8, or The first viewing angle adjusting device further includes: a first insulating layer disposed on the first transparent substrate and having a first opening pattern and the first transparent electrode is disposed on the first opening In the pattern; and a second insulation I' is disposed on the lower surface of the second transparent substrate, and has a pattern corresponding to the opening of the younger brother - ... ϋ ϋ wood - opening pattern, and the second The transparent electrode system is disposed in the second opening pattern. 13. The liquid crystal one-view adjusting device according to Item 12 of the above-mentioned item 12 further includes: 〃〒. The plurality of scanning lines of the hai dynasty are set in the first _ On a transparent substrate; The line-system is disposed on the first transparent substrate, and has a plurality of pixels combined with the scans to form a two-p 2 'δ昼昼素 array, and the plurality of pixels form a predetermined pixel region a plurality of thin film transistors, wherein the electro-crystal system is located in each of the books +, the scanning lines of the three-dimensional connection, the w-one, and the data line of the data line, and the scan driving circuit, The (four) membrane electricity day-to-day electrical connection; and a data driving circuit electrically connected to the thin film transistors; wherein the H transparent electrode package scrapes a plurality of halogen electrodes in each of the halogens, and The library + each of the three denier poles/, corresponding to each of the diaphragm films is electrically connected. TW1713C(051004)CRF.doc 49 1272438 Second as = patent scope W'3 + 7 'coffee items;: ^ day and day", the staff does not deduct, wherein the first viewing angle adjustment device further includes: a plurality of scanning lines Provided on the first transparent substrate; a plurality of data lines are disposed on the first transparent substrate, and define a halogen matrix with the plurality of pixels, and the second pixel The dentin layer constitutes a predetermined pixel region; a plurality of thin film transistors are disposed on the first transparent substrate and are electrically connected to the thin film transistors; and an eutrophic driving circuit, The thin film transistors are electrically connected; wherein the '(four)-transparent electrode package scrapes a plurality of halogen electrodes, each of which is located in each element, and is electrically connected to the corresponding liquid crystal of the thin film transistor: A method for adjusting a liquid crystal display with an adjustable viewing angle, the viewing angle is adjustable, and D. 0 includes a viewing angle adjusting device, and the viewing angle adjusting device has __liquid crystal and voltage '. The method includes: or a sophomore second: differential pressure To perform a wide viewing angle mode, wherein the first-pressure difference is. Next to "Hai, the saturation voltage of the night mode; and 〇5 = differential pressure to perform - narrow viewing angle mode, wherein the second differential pressure is greater than the electrical port pressure.... The saturation voltage of the evil, but less than the ride The liquid crystal mode is saturated. As described in claim 15, the second pressure difference is the first liquid I;:::: 17· The step of the view mode further includes generating a third voltage difference, wherein the TWmsqosiOO^CRF.doe 50 1272438 _' 丨I is greater than the saturation voltage of the liquid crystal mode 1, '~-~~_ . . . how 18· The method of claim 15, wherein the step of the viewing angle mode further comprises: generating a third differential pressure, wherein the second = performing the narrowing is greater than a saturation voltage of the liquid crystal mode. ^ The second differential pressure is 0. Or 19. The method of performing the narrow viewing angle mode according to the method described in item ι. 5 of the patent application scope further comprises generating a third pressure difference, wherein the third pressure difference is greater than 〇·5 times the liquid crystal mode The saturation voltage, but less than 0.8 times the saturation voltage of the liquid crystal mode. 2〇·If the patent application scope is 19th The method of claim, wherein the third pressure is 0.7 times the saturation voltage of the liquid crystal mode. TW1713C (051004) CRF.doc 51