CN217112940U - Liquid crystal display device - Google Patents
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- CN217112940U CN217112940U CN202123000189.9U CN202123000189U CN217112940U CN 217112940 U CN217112940 U CN 217112940U CN 202123000189 U CN202123000189 U CN 202123000189U CN 217112940 U CN217112940 U CN 217112940U
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 171
- 239000000758 substrate Substances 0.000 claims abstract description 107
- 230000000007 visual effect Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000000975 dye Substances 0.000 description 56
- 230000010287 polarization Effects 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 10
- 239000010409 thin film Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a liquid crystal display device, which comprises a liquid crystal display panel and a visual angle control box positioned at the light inlet side of the liquid crystal display panel; the visual angle control box is divided into a plurality of visual angle adjusting areas and comprises a first substrate, a second substrate, a dye liquid crystal layer and a control electrode group, wherein the first substrate and the second substrate are oppositely arranged, and the dye liquid crystal layer and the control electrode group are positioned between the first substrate and the second substrate; the dye liquid crystal layer comprises liquid crystal molecules and dye molecules dispersed among the liquid crystal molecules; the control electrode group includes a plurality of sub-electrode groups in one-to-one correspondence with the plurality of viewing angle adjustment regions, each sub-electrode group for individually controlling the rotation direction and rotation angle of the liquid crystal molecules and the dye molecules in the dye liquid crystal layer of its own corresponding viewing angle adjustment region. The liquid crystal display device can automatically switch between wide viewing angle and narrow viewing angle display and can improve display quality and vehicle driving safety.
Description
Technical Field
The utility model relates to a display device technical field, in particular to liquid crystal display device.
Background
The current liquid crystal display panel (LCD) of IPS/FFS/VA display mode is characterized by a very wide viewing angle of >80 °, but in practical applications, there is a privacy requirement for a narrow viewing angle, and it is best to realize switchable wide and narrow viewing angles.
Among them, the means of increasing the narrow cornea is currently the most common and the simplest means. The narrow viewing angle film can be controlled within 30 degrees after being applied, but when the wide and narrow viewing angles need to be switched, the narrow viewing angle film needs to be taken down and put down, the operation is very troublesome in certain scenes, and meanwhile, the central brightness also has certain loss in narrow viewing angle pictures.
The other method is that a mode of controlling liquid crystal light leakage by adding a transparent ITO electrode on an upper display substrate (CF side), and the mode has great difficulty in whole LCD panel design, backlight design, circuit control design and production process and high reject ratio; in addition, because an additional electrode is added, the LCD display is very unfavorable, the LCD display residual image level is poor, light leakage exists under a wide viewing angle, and the brightness loss is more serious under a narrow viewing angle. In addition, in this case, the black brightness in the narrow viewing angle mode is increased, although the contents displayed on the screen cannot be clearly seen by squinting, a large amount of light can be seen, and in the vehicle-mounted display, if the narrow viewing angle direction is the main driving position, the main driving is interfered by the large amount of light in the narrow viewing angle, which affects the driving safety.
SUMMERY OF THE UTILITY MODEL
The utility model provides a liquid crystal display device, above-mentioned liquid crystal display device can wide visual angle of automatic switch-over and narrow visual angle demonstration, convenient operation to can improve display quality and vehicle safety of traveling.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a liquid crystal display device comprises a liquid crystal display panel and a visual angle control box positioned at the light incident side of the liquid crystal display panel;
the visual angle control box is divided into a plurality of visual angle adjusting areas and comprises a first substrate, a second substrate, a dye liquid crystal layer and a control electrode group, wherein the first substrate and the second substrate are oppositely arranged, and the dye liquid crystal layer and the control electrode group are positioned between the first substrate and the second substrate; wherein,
the dye liquid crystal layer comprises liquid crystal molecules and dye molecules dispersed among the liquid crystal molecules;
the control electrode group comprises a plurality of sub-electrode groups which are in one-to-one correspondence with the plurality of visual angle adjusting areas, and each sub-electrode group is used for independently controlling the rotation directions and the rotation angles of liquid crystal molecules and dye molecules in the dye liquid crystal layer of the visual angle adjusting area corresponding to the sub-electrode group.
Optionally, the liquid crystal display panel includes a plurality of display pixel units, and an orthogonal projection of each of the viewing angle adjusting regions on the liquid crystal display panel covers at least two of the display pixel units.
Optionally, a first polarizer is arranged on the light incident side of the liquid crystal display panel, a second polarizer is arranged on the light emergent side of the liquid crystal display panel, and a transmission axis of the first polarizer is perpendicular to a transmission axis of the second polarizer;
the initial directions of the long axes of the liquid crystal molecules and the dye molecules are parallel to a first direction, and the first direction is a transmission axis direction of the first polarizer.
Optionally, the first substrate is disposed adjacent to the liquid crystal display panel, and the second substrate is located on a side of the first substrate away from the liquid crystal display panel;
each sub-electrode group comprises a first electrode, at least two second electrodes arranged side by side and a third electrode; wherein,
the first electrode is positioned on one side of the first substrate facing the second substrate;
at least two second electrodes are positioned on one side of the second substrate facing the first substrate;
the third electrode is located between at least two of the second electrodes and the second substrate, and is insulated from the second electrodes.
Optionally, the liquid crystal molecules are positive liquid crystals, at least two of the second electrodes in each of the sub-electrode groups are arranged along a second direction, and the second direction is a transmission axis direction of the second polarizer.
Optionally, the first electrode in the plurality of sub-electrode groups is a full-surface electrode, the second electrode is a strip-shaped electrode extending along the first direction, and the third electrode in the plurality of sub-electrode groups is a full-surface electrode.
Optionally, the first electrode in the plurality of sub-electrode groups is a full-surface electrode, the second electrode is a strip-shaped electrode extending along the first direction, the third electrode is a strip-shaped electrode extending along the first direction, and an orthogonal projection of the third electrode on the liquid crystal display panel covers at least an orthogonal projection of the viewing angle adjusting area on the liquid crystal display panel.
Optionally, a first alignment layer is disposed on a side of the first electrode away from the first substrate, a second alignment layer is disposed on a side of the second electrode away from the second substrate, and an alignment direction of the first alignment layer and an alignment direction of the second alignment layer are the same as the first direction.
Optionally, the liquid crystal display panel includes a first display substrate and a second display substrate which are oppositely arranged, and a liquid crystal layer located between the first display substrate and the second display substrate; the first display substrate is close to the visual angle control box, the second display substrate is located on one side, away from the visual angle control box, of the first display substrate, the first polaroid is located on one side, away from the second display substrate, of the first display substrate, and the second polaroid is located on one side, away from the first display substrate, of the second display substrate.
Optionally, the display device further comprises a backlight source located at the light incident side of the viewing angle control box.
The utility model discloses beneficial effect as follows:
the embodiment of the utility model provides an among the liquid crystal display device, including liquid crystal display panel and the visual angle control box that is located liquid crystal display panel income light side, wherein, visual angle control box includes relative first base plate and the second base plate that sets up, be located dye liquid crystal layer and the control electrode group between first base plate and the second base plate, dye molecule in the dye liquid crystal layer can absorb the light that the direction of polarization is parallel rather than major axis direction and see through the light that the direction of polarization is perpendicular rather than major axis direction, liquid crystal molecule can convert the light that the direction of polarization is parallel rather than major axis direction into the light that the direction of polarization is perpendicular rather than major axis direction, consequently, can adjust the rotational state between first base plate and second base plate of dye molecule and liquid crystal molecule in the dye liquid crystal layer through control electrode group, can adjust the direction of polarization and the angle of penetrating the light of visual angle control box, and then when the liquid crystal display panel shows, can adjust the bright and dark state of display pixel unit and the visual angle of liquid crystal display panel in the liquid crystal display panel through visual angle control box, and, because visual angle control box divide into a plurality of visual angle regulatory regions that correspond with liquid crystal display panel, the sub-electrode group in the control electrode group can be controlled liquid crystal molecule and the direction of rotation and the rotation angle of dye molecule in the dyestuff liquid crystal layer of its self corresponding visual angle regulatory region alone, can realize adjusting the visual angle in the different directions of different display regions of liquid crystal display panel through each sub-electrode group promptly, can realize different display region's peep-proof and show. Therefore, the liquid crystal display device can control the state of the dye liquid crystal box through the control electrode group, realizes the automatic switching of the wide visual angle display and the narrow visual angle peep-proof display of different display areas of the liquid crystal display panel, is convenient to operate, and compared with the prior art, does not need to set the electrodes for adjusting the visual angle on the liquid crystal display panel, can avoid the problems of poor display ghost level, light leakage in the wide visual angle, serious brightness loss in the narrow visual angle and interference of light in the large visual angle, and improves the display quality of the liquid crystal display panel and the driving safety of vehicles.
Drawings
Fig. 1 is a schematic view of a display state of a liquid crystal display device according to an embodiment of the present invention;
fig. 2 is a schematic view of a display state of another lcd device according to an embodiment of the present invention;
fig. 3 is a schematic view of a display state of another lcd device according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating an arrangement of second electrodes in a viewing angle adjustment area according to an embodiment of the present invention.
Icon:
1-a liquid crystal display panel; 11-a first polarizer; 12-a second polarizer; 13-a first display substrate; 14-a second display substrate; 15-a liquid crystal layer; 2-a view angle control box; 21-a first substrate; 22-a second substrate; 23-a dye liquid crystal layer; 231-liquid crystal molecules; 232-dye molecule; 24-a first electrode; 25-a second electrode; 26-a third electrode; 27-an insulating layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 2 and fig. 3, the present invention provides a liquid crystal display device, which includes a liquid crystal display panel 1, and a viewing angle control box 2 located at a light incident side of the liquid crystal display panel 1;
the viewing angle control box 2 is divided into a plurality of viewing angle adjusting areas, and the viewing angle control box 2 comprises a first substrate 21 and a second substrate 22 which are oppositely arranged, a dye liquid crystal layer 23 positioned between the first substrate 21 and the second substrate 22, and a control electrode group; wherein,
the dye liquid crystal layer 23 includes liquid crystal molecules 231 and dye molecules 232 dispersed between the liquid crystal molecules 231;
the control electrode group includes a plurality of sub-electrode groups in one-to-one correspondence with the plurality of viewing angle adjusting regions, each of which is for individually controlling the rotation direction and rotation angle of the liquid crystal molecules 231 and dye molecules 232 in the dye liquid crystal layer 23 of its own corresponding viewing angle adjusting region.
In the liquid crystal display device provided by the above embodiment of the present invention, including the liquid crystal display panel 1 and the viewing angle control box 2 located at the light incident side of the liquid crystal display panel 1, wherein the viewing angle control box 2 includes the first substrate 21 and the second substrate 22 which are oppositely disposed, the dye liquid crystal layer 23 located between the first substrate 21 and the second substrate 22, and the control electrode set, the dye molecules 232 in the dye liquid crystal layer 23 can absorb the light parallel to the long axis direction thereof and transmit the light perpendicular to the long axis direction thereof, the liquid crystal molecules 231 can convert the light parallel to the long axis direction thereof into the light perpendicular to the long axis direction thereof, therefore, the rotation state of the dye molecules 232 and the liquid crystal molecules 231 in the dye liquid crystal layer 23 between the first substrate 21 and the second substrate 22 can be controlled by the control electrode set, the polarization direction and the emitting angle of the light passing through the viewing angle control box 2 can be adjusted, furthermore, when the liquid crystal display panel 1 displays, the bright-dark state of the display pixel units in the liquid crystal display panel 1 and the viewing angle of the liquid crystal display panel 1 can be adjusted through the viewing angle control box 2, and moreover, because the viewing angle control box 2 is divided into a plurality of viewing angle adjusting areas corresponding to the liquid crystal display panel 1, the sub-electrode groups in the control electrode groups can independently control the rotation direction and the rotation angle of the liquid crystal molecules 231 and the dye molecules 232 in the dye liquid crystal layer 23 of the viewing angle adjusting area corresponding to the sub-electrode groups, that is, the viewing angles in different directions of different display areas of the liquid crystal display panel 1 can be adjusted through the sub-electrode groups, and the peep-proof display of different display areas can be realized. Therefore, the liquid crystal display device can control the dye liquid crystal box state through the control electrode group, realize the automatic switching of the wide visual angle display and the narrow visual angle peep-proof display of different display areas of the liquid crystal display panel 1, the operation is convenient, and compared with the prior art, the electrode for adjusting the visual angle is not required to be arranged on the liquid crystal display panel 1, the problems of display ghost level difference, light leakage in the wide visual angle, serious brightness loss in the narrow visual angle and interference of light in the large visual angle can be avoided, and the display quality of the liquid crystal display panel 1 and the driving safety of a vehicle are improved.
In a specific embodiment, the liquid crystal display panel 1 includes a plurality of display pixel units, the orthographic projection of each viewing angle adjusting area on the liquid crystal display panel 1 covers at least two display pixel units, and the states of the plurality of display pixel units can be controlled by one viewing angle adjusting area on the viewing angle control box 2, so that the structure of the display device is simplified, and the manufacturing cost is saved.
The liquid crystal display panel 1 may be a liquid crystal display panel (LCD) in an IPS/FFS/VA display mode. When the narrow-view display is not needed, the visual angle can reach more than 80 degrees, and the wide-view display is realized.
In the embodiment of the present invention, the light incident side of the liquid crystal display panel 1 may have the first polarizer 11, the light emergent side of the liquid crystal display panel 1 may have the second polarizer 12, and the transmission axis of the first polarizer 11 is perpendicular to the transmission axis of the second polarizer 12; the initial directions of the long axes of the liquid crystal molecules 231 and the dye molecules 232 may be parallel to a first direction x, which is a transmission axis direction of the first polarizer 11. When the initial directions of the long axes of the liquid crystal molecules 231 and the dye molecules 232 are parallel to the first direction x, and the liquid crystal display panel 1 is in the black state, the liquid crystal display panel 1 can be opaque, so as to avoid the problem of light leakage under a wide viewing angle of the display panel.
Specifically, the liquid crystal display panel 1 can realize a plurality of different display states by controlling the adjustment of the rotation direction and the rotation angle of the liquid crystal molecules 231 and the dye molecules 232 in the viewing angle control box 2 by the electrode assembly.
In the normal wide-viewing-angle display of the liquid crystal display panel 11, the display pixel cells in the area a are in the non-energized black state, and the display pixel cells in the area B are in the energized white state as shown in fig. 1 and 2.
As shown in the area a in fig. 1 and 2, when the display pixel operates in the non-energized black state, the long axis directions of the liquid crystal molecules 231 and the dye molecules 232 in the dye liquid crystal layer 23 can be kept to rotate, the polarization direction of most of the light transmitted through the viewing angle control box 2 is perpendicular to the transmission axis direction of the first polarizer 11, the light is absorbed by the first polarizer 11, the polarization direction of the light transmitted through the first polarizer 11 is perpendicular to the transmission axis direction of the second polarizer 12, and is absorbed by the second polarizer 12, and the dotted arrow in the area a in fig. 1 and 2 indicates the change of the light intensity at this time, so that the liquid crystal display panel 1 can be made to be light-tight in the black state; as shown in fig. 1 and area B of fig. 2, when the display pixel unit operates in the energized white state, the liquid crystal molecules 231 and the dye molecules 232 in the dye liquid crystal layer 23 can be rotated along a horizontal plane parallel to the second substrate 22 until the long axis direction is perpendicular to the transmission axis direction of the first polarizer 11 (the liquid crystal molecules 231 and the dye molecules 232 are rotated from the state of area B of fig. 1 to the state of area B of fig. 2), and the polarization direction of most of the light transmitted through the viewing angle control box 2 is parallel to the transmission axis direction of the first polarizer 11, and this part of the light can normally transmit through the liquid crystal display panel 1, so that the display pixel unit performs display, and the dotted arrow in area B of fig. 2 indicates the change of the light intensity at this time. High contrast display can be realized by adjusting the rotation direction of the liquid crystal molecules 231 and the dye molecules 232 in the viewing angle controlling cell 2 in the horizontal plane.
Specifically, when the narrow-viewing-angle privacy display of the liquid crystal display panel 1 is required, as shown in fig. 3, the liquid crystal molecules 231 and the dye molecules 232 in the dye liquid crystal layer 23 may be deflected together in the arrangement direction of the first substrate 21 and the second substrate 22, the deflection angle of the dye molecules 232 and the liquid crystal molecules 231 in fig. 3 may be 45 °, the incident angle of the incident light with a large angle (indicated by the dashed arrow) in fig. 3 is approximately perpendicular to the incident angle of the dye molecules 232 and the liquid crystal molecules 231, since the polarization direction of the light is perpendicular to the propagation direction, the part of the incident light with a large angle, which is parallel to the long axis direction of the dye molecules 232, is absorbed by the dye molecules 232, and the part of the incident light with a polarization direction perpendicular to the long axis direction of the dye molecules 232 (which is perpendicular to the transmission axis direction of the first polarizer 11) is emitted, and is completely absorbed by the first polarizer 11, so as to ensure that the incident light with a large angle cannot be emitted into the liquid crystal display panel 1, and the incident light of the front view angle can be incident into the liquid crystal display panel 1 to perform narrow view angle peep-proof display. For example, in fig. 3, the human eye cannot see the large-angle light rays at the left side of the picture at the large viewing angle a, and can see the light rays at the front viewing angle and the right side at the front viewing angle b (indicated by solid arrows).
In the above-mentioned viewing angle controlling box 2, the first substrate 21 may be disposed adjacent to the liquid crystal display panel 1, and the second substrate 22 may be disposed on a side of the first substrate 21 away from the liquid crystal display panel 1; each sub-electrode group comprises a first electrode 24, at least two second electrodes 25 arranged side by side, and a third electrode 26; wherein, the first electrode 24 is located on one side of the first substrate 21 facing the second substrate 22; at least two second electrodes 25 are located on the side of the second substrate 22 facing the first substrate 21; the third electrode 26 is located between the at least two second electrodes 25 and the second substrate 22, and is insulated from the second electrodes 25. The rotation of the liquid crystal molecules 231 and the dye molecules 232 in the horizontal plane parallel to the second substrate 22 can be achieved by the energized state of the second electrode 25 and the third electrode 26, and the rotation of the liquid crystal molecules 231 and the dye molecules 232 in the alignment direction of the first substrate 21 and the second substrate 22 can be achieved by the cooperation of the first electrode 24 with the second electrode 25 and the third electrode 26. Specifically, the second electrode 25 and the third electrode 26 may be separated by an insulating layer 27, and the insulating layer 27 may be a polyvinyl chloride insulating layer (PV insulating layer). The first electrode 24, the second electrode 25, and the third electrode 26 may be transparent ITO electrodes.
In a specific embodiment, the liquid crystal molecules 231 may be positive liquid crystals, and at least two second electrodes 25 in each sub-electrode group are arranged along a second direction y, which is a transmission axis direction of the second polarizer 12, as shown in fig. 4, which is a schematic arrangement of the second electrodes in one viewing angle adjusting region. The specific power-up mode of the sub-electrode group can be as follows:
when the first electrode 24 is suspended and no voltage difference is applied between the second electrode 25 and the third electrode 26, the liquid crystal molecules 231 and the dye molecules 232 in the dye liquid crystal layer 23 keep the initial directions and do not rotate;
when the first electrode 24 is suspended and a high voltage difference is applied between the second electrode 25 and the third electrode 26, the liquid crystal molecules 231 and the dye molecules 232 in the dye liquid crystal layer 23 rotate in the horizontal plane to a direction of a long axis perpendicular to the direction of a transmission axis of the first polarizer 11 under the driving of a horizontal electric field parallel to the second substrate 22 formed by the second electrode 25 and the third electrode 26;
when a specific alternating current is applied to the first electrode 24 and the same common potential is applied to the second electrode 25 and the third electrode 26, the liquid crystal molecules 231 and the dye molecules 232 in the dye liquid crystal layer 23 may be vertically deflected to a direction at an angle, for example, 45 ° with the horizontal direction under the driving of a vertical electric field formed by the first electrode 24, the second electrode 25 and the third electrode 26 and perpendicular to the second substrate 22.
Specifically, the viewing angle controlling box 2 may further include a plurality of thin film transistors TFT respectively connected to the second electrodes 25 in each of the viewing angle adjusting regions, and the viewing angle controlling box 2 may be separately controlled by the thin film transistors.
In a possible embodiment, the first electrode 24 in the plurality of sub-electrode groups may be a whole-surface electrode, the second electrode 25 may be a strip-shaped electrode extending along the first direction x, and the third electrode 26 in the plurality of sub-electrode groups may be a whole-surface electrode, which can simplify the manufacturing process and facilitate the power-up of the plurality of sub-electrode groups.
In one possible embodiment, the first electrode 24 in the plurality of sub-electrode groups may be a whole-surface electrode, the second electrode 25 may be a stripe electrode extending along the first direction x, and the third electrode 26 may be a stripe electrode extending along the first direction x, and an orthographic projection of the third electrode 26 on the liquid crystal display panel 1 covers at least an orthographic projection of the viewing angle adjustment area on the liquid crystal display panel 1.
In the above liquid crystal display device, a first alignment layer may be disposed on a side of the first electrode 24 away from the first substrate 21, a second alignment layer may be disposed on a side of the second electrode 25 away from the second substrate 22, an alignment direction of the first alignment layer and an alignment direction of the second alignment layer are the same as the first direction x, that is, the alignment direction of the first alignment layer and the alignment direction of the second alignment layer are parallel to a transmission axis direction of the first polarizer, and initial directions of the dye molecules 232 and the liquid crystal molecules 231 in the dye liquid crystal layer 23 can be aligned through the first alignment layer and the second alignment layer.
In the above-described liquid crystal display device, the liquid crystal display panel 1 may include a first display substrate 13 and a second display substrate 14 that are disposed opposite to each other, and a liquid crystal layer 15 between the first display substrate 13 and the second display substrate 14; the first display substrate 13 is disposed near the viewing angle control box 2, the second display substrate 14 is disposed on a side of the first display substrate 13 away from the viewing angle control box 2, the first polarizer 11 is disposed on a side of the first display substrate 13 departing from the second display substrate 14, and the second polarizer 12 is disposed on a side of the second display substrate 14 departing from the first display substrate 13.
The first polarizer 11 in the liquid crystal display panel 1 and the first substrate 21 of the viewing angle control box 2 may be adhered by transparent optical glue, so as to fix the liquid crystal display panel 1 and the viewing angle control box 2.
Specifically, a side of the first display substrate 13 facing the second display substrate 14 is provided with a thin film transistor array layer for controlling states of a plurality of display pixel units. Specifically, the thin film transistor array layer may include scan lines, data lines, thin film transistors, pixel electrodes, and the like for controlling the states of a plurality of pixel units.
The liquid crystal display device further comprises a backlight source positioned on the light incident side of the viewing angle control box 2, wherein the backlight source can provide incident light for the viewing angle control box 2 and the liquid crystal display panel 1.
It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The liquid crystal display device is characterized by comprising a liquid crystal display panel and a visual angle control box positioned on the light incident side of the liquid crystal display panel;
the visual angle control box is divided into a plurality of visual angle adjusting areas and comprises a first substrate, a second substrate, a dye liquid crystal layer and a control electrode group, wherein the first substrate and the second substrate are oppositely arranged, and the dye liquid crystal layer and the control electrode group are positioned between the first substrate and the second substrate; wherein,
the dye liquid crystal layer comprises liquid crystal molecules and dye molecules dispersed among the liquid crystal molecules;
the control electrode group comprises a plurality of sub-electrode groups which are in one-to-one correspondence with the plurality of visual angle adjusting areas, and each sub-electrode group is used for independently controlling the rotation directions and the rotation angles of liquid crystal molecules and dye molecules in the dye liquid crystal layer of the visual angle adjusting area corresponding to the sub-electrode group.
2. The lcd apparatus of claim 1, wherein the lcd panel comprises a plurality of display pixel units, and wherein the orthographic projection of each of the viewing angle adjustment regions on the lcd panel covers at least two of the display pixel units.
3. The liquid crystal display device according to claim 1, wherein the liquid crystal display panel has a first polarizer on a light incident side thereof, and a second polarizer on a light emergent side thereof, and a transmission axis of the first polarizer is perpendicular to a transmission axis of the second polarizer;
the initial directions of the long axes of the liquid crystal molecules and the dye molecules are parallel to a first direction, and the first direction is the transmission axis direction of the first polarizer.
4. The liquid crystal display device according to claim 3, wherein the first substrate is disposed adjacent to the liquid crystal display panel, and the second substrate is disposed on a side of the first substrate away from the liquid crystal display panel;
each sub-electrode group comprises a first electrode, at least two second electrodes arranged side by side and a third electrode; wherein,
the first electrode is positioned on one side of the first substrate facing the second substrate;
at least two second electrodes are positioned on one side of the second substrate facing the first substrate;
the third electrode is positioned between at least two second electrodes and the second substrate and is insulated from the second electrodes.
5. The liquid crystal display device according to claim 4, wherein the liquid crystal molecules are positive liquid crystals, and at least two of the second electrodes in each of the sub-electrode groups are arranged in a second direction, which is a transmission axis direction of the second polarizer.
6. The liquid crystal display device according to claim 5, wherein the first electrode in the plurality of sub-electrode groups is a full-area electrode, the second electrode is a stripe-shaped electrode extending in the first direction, and the third electrode in the plurality of sub-electrode groups is a full-area electrode.
7. The lcd apparatus of claim 5, wherein the first electrode of the plurality of sub-electrode sets is a full-area electrode, the second electrode is a stripe electrode extending along a first direction, the third electrode is a stripe electrode extending along the first direction, and an orthographic projection of the third electrode on the lcd panel covers at least an orthographic projection of the viewing angle adjustment area on the lcd panel.
8. A liquid crystal display device according to any of claims 4-7, characterized in that a side of the first electrode facing away from the first substrate is provided with a first alignment layer, a side of the second electrode facing away from the second substrate is provided with a second alignment layer, and the alignment direction of the first alignment layer and the alignment direction of the second alignment layer are the same as the first direction.
9. The liquid crystal display device according to claim 3, wherein the liquid crystal display panel includes a first display substrate and a second display substrate which are disposed opposite to each other, and a liquid crystal layer between the first display substrate and the second display substrate; the first display substrate is close to the visual angle control box, the second display substrate is located on one side, away from the visual angle control box, of the first display substrate, the first polaroid is located on one side, away from the second display substrate, of the first display substrate, and the second polaroid is located on one side, away from the first display substrate, of the second display substrate.
10. The lcd apparatus of claim 1, further comprising a backlight source located at the light incident side of the viewing angle control box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123000189.9U CN217112940U (en) | 2021-11-30 | 2021-11-30 | Liquid crystal display device |
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| CN202123000189.9U CN217112940U (en) | 2021-11-30 | 2021-11-30 | Liquid crystal display device |
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| CN217112940U true CN217112940U (en) | 2022-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116400526A (en) * | 2023-06-08 | 2023-07-07 | 惠科股份有限公司 | Display module, driving method and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116400526A (en) * | 2023-06-08 | 2023-07-07 | 惠科股份有限公司 | Display module, driving method and display device |
| CN116400526B (en) * | 2023-06-08 | 2023-08-25 | 惠科股份有限公司 | Display module, driving method and display device |
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