CN106094386B - Liquid crystal lens, display device and curved surface display method - Google Patents
Liquid crystal lens, display device and curved surface display method Download PDFInfo
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- CN106094386B CN106094386B CN201610430739.5A CN201610430739A CN106094386B CN 106094386 B CN106094386 B CN 106094386B CN 201610430739 A CN201610430739 A CN 201610430739A CN 106094386 B CN106094386 B CN 106094386B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 26
- 210000001508 eye Anatomy 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 210000003644 lens cell Anatomy 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 210000005252 bulbus oculi Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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Abstract
The invention discloses a liquid crystal lens, a display device and a curved surface display method, relates to the field of display, can realize curved surface display, is easy to manufacture, low in cost and long in service life, and occupies a small physical space. The liquid crystal lens is used for being attached to the outside of a flat display device to realize a curved surface display effect, and comprises a plurality of lens units, wherein each lens unit comprises: a liquid crystal layer, an alignment layer, and a first electrode and a second electrode that drive the liquid crystal layer; the lens units are driven individually, so that the refractive index of each of the lens units arranged along the equivalent curved surface is gradually increased from the position corresponding to the optimal viewing point to both sides.
Description
Technical Field
The invention relates to the field of display, in particular to a liquid crystal lens, a display device and a curved surface display method.
Background
Most of the current display devices are flat display devices, and due to the fact that eyeballs are spherical, a pure flat display picture is actually distorted, and the larger the picture size is, the more obvious the picture size is. If the display screen is designed according to the curvature of the retina, the display screen is completely parallel to the retina, and the truest picture can be transmitted to the brain. If the screen is designed to be a curved surface, the radian of the curved surface meets the requirement of human engineering, namely, the curved surface meets the spherical characteristic of eyeballs, the distance from each point on the screen to the eyes can be equal, as shown in fig. 1, a better visual angle can be realized at the left side and the right side, the visual distortion at the edge of the screen is eliminated, and the image quality is more uniform, so that the natural and comfortable impression is created, the more vivid picture presence impression, the more natural and comfortable viewing experience and the more outstanding presence impression are created.
However, if curved display is to be realized, the glass substrate is relatively easy to bend for liquid crystal display products, but the bending of the backlight module is very difficult; meanwhile, it is difficult to ensure the brightness uniformity of each pixel point after bending the backlight module. Moreover, for the existing curved surface display products on the market, the viewer can enjoy the best visual experience only when being positioned at the best viewing point, and the curved surface display products cannot be integrally hung along the wall, so that the curved surface display products need to occupy larger physical space, and after the curved surface display products are used for a longer time, part of the curved surface display products can cause quality problems due to stress concentration, and the service life is short. Although the OLED device can realize flexible display and easily realize curved surface display effect, the current technology is still immature, short in service life and high in cost, and further exploration and development are still needed.
Disclosure of Invention
The invention aims to provide a liquid crystal lens, a display device and a curved surface display method, which can realize curved surface display, are easy to manufacture, have low cost and long service life and occupy small physical space.
In order to achieve the above purpose, the invention provides the following technical scheme:
the present invention provides a liquid crystal lens for attaching to a flat display device to realize a curved display effect, the liquid crystal lens comprising a plurality of lens units, each lens unit comprising: a liquid crystal layer, an alignment layer, and a first electrode and a second electrode that drive the liquid crystal layer; the lens units are individually driven so that the refraction angles of the lens units arranged along the equivalent curved surface gradually increase from the optimal viewing point corresponding position to both sides.
Optionally, when the liquid crystal lens is attached to the outside of the flat panel display device, one pixel of the flat panel display device corresponds to one lens unit; or, one pixel of the flat panel display device corresponds to a plurality of the lens units, and the lens units corresponding to the same pixel are continuously distributed.
Preferably, the lens units are distributed in groups, each group of lens units corresponds to an equivalent curved surface, and each equivalent curved surface corresponds to an optimal viewing point.
Optionally, if one pixel of the flat panel display device corresponds to one lens unit, the lens units corresponding to adjacent pixels are respectively located in different groups; if one pixel of the flat panel display device corresponds to a plurality of the lens units, the lens units corresponding to the same pixel are respectively positioned in different groups.
In another aspect, the present invention also provides a display device, including: a flat display device, and a liquid crystal lens of any of the above; the liquid crystal lens is used for being attached to the outer part of the plane display device to realize a curved surface display effect.
Preferably, when the display device needs to set N optimal viewing points simultaneously, where N is a natural number, the display device further includes: a first setting unit for dividing the lens units of the liquid crystal lens into N groups and assigning a group of lens units to each of the optimal viewing points; the second setting unit is used for calculating the refractive index of each lens unit in the corresponding group according to the position of each optimal viewing point aiming at each optimal viewing point; a third setting unit for calculating, for each lens unit, a driving voltage of the lens unit according to a refractive index of the lens unit.
Preferably, the display device further includes: the human eye detection device is used for acquiring the number of the viewers and the positions of the eyes of each viewer in a preset range of the viewable side of the display device so as to determine the number and the positions of the optimal viewing points to be set, and the preset range is located on the display device.
Optionally, the human eye detection apparatus includes: the camera is used for shooting a preset range of one side which can be watched by the display device; and the image processing unit is connected with the camera and used for receiving the images shot by the camera and identifying the number of the viewers and the positions of the eyes of each viewer from the images.
In another aspect, the present invention further provides a curved surface display method of the display device, including S1, calculating refractive indexes of each lens unit in the liquid crystal lens according to a position of an optimal viewing point; s2, calculating the driving voltage of the lens unit according to the refractive index of the lens unit; and S3, loading a driving voltage to the lens unit, and simultaneously playing a display picture by the flat panel display device.
Preferably, when the display device needs to set N optimal viewing points simultaneously, the curved surface display method further includes, before step S1: dividing lens units of the liquid crystal lens into N groups, and distributing a group of lens units for each optimal viewing point; in step S1, for each optimal viewing point, the refractive index of each lens unit in the corresponding group is calculated according to the position of the optimal viewing point.
Optionally, before the dividing the lens units of the liquid crystal lens into N groups and allocating one group of lens units to each of the optimal viewing points, the method further includes: the number of the viewers in a preset range of the viewable side of the display device and the position of each viewer's eye are obtained to determine the number and the position of the optimal viewing point to be set.
The invention provides a liquid crystal lens, a display device and a curved surface display method, wherein the liquid crystal lens comprises a plurality of lens units, and each lens unit comprises: a liquid crystal layer, an alignment layer, and a first electrode and a second electrode driving the liquid crystal layer; the lens units are driven individually so that the refraction angles of the lens units arranged along the equivalent curved surface gradually increase from the optimal viewing point corresponding position to both sides. If different drive voltages are applied to different lens units, the liquid crystal deflection angles of different lens units can be different, so that the refractive index n is different, the light deflection angles of the light rays emitted by each point of the liquid crystal lens are different, the light deflection angles of two sides of the display device can be large by adjusting the drive voltages, the deflection angle of the middle light rays is small, finally, the light ray optical path reaching human eyes is the same, an equivalent curved surface display effect is formed, the liquid crystal lens can be attached to a plane display device to generate a curved surface display effect, the liquid crystal lens is simple in structure, the production process can be compatible with a liquid crystal panel, the liquid crystal lens is easy to manufacture and low in cost, meanwhile, the liquid crystal lens does not need to be designed into a curved surface shape, the occupied physical space is small, and the quality problem caused by stress concentration of a traditional curved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a curved display principle;
FIG. 2 is a schematic structural diagram of a liquid crystal lens according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating a curved surface display principle of a liquid crystal lens according to an embodiment of the present invention;
FIG. 4 is a diagram of an equivalent curved surface display optical path of a liquid crystal lens according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a principle of a liquid crystal lens according to an embodiment of the invention for enabling a plurality of persons to watch the liquid crystal lens;
fig. 6 is a block diagram of a display device according to an embodiment of the present invention.
Reference numerals:
10-a flat display device, 20-a liquid crystal lens, 200-a lens cell, 21-a first electrode,
22-alignment layer, 23-liquid crystal layer, 24-second electrode, 30-equivalent curved surface,
200A-lens unit, 200B-lens unit, 31-first setting unit,
32-second setting unit, 33-third setting unit.
Detailed Description
For the sake of understanding, the liquid crystal lens, the display device and the curved surface display method according to the embodiments of the present invention will be described in detail below with reference to the drawings attached to the specification.
The embodiment of the present invention provides a liquid crystal lens 20, as shown in fig. 2 and 3, the liquid crystal lens 20 is used for being attached to a flat display device 10 to achieve a curved display effect, the liquid crystal lens 20 includes a plurality of lens units 200 (each lens unit 200 may be regarded as a liquid crystal micro lens), and each lens unit 200 includes: a liquid crystal layer 23, an alignment layer 22, and a first electrode 21 and a second electrode 24 that drive the liquid crystal layer 23; the lens units 200 are driven individually so that the refraction angles of the lens units 200 arranged along the equivalent curved surface gradually increase from the optimal viewing point corresponding position to both sides.
The liquid crystal lens 20 provided in this embodiment is planar, and is attached to the flat display device 10, but can achieve the effect of curved display. The liquid crystal lens 20 includes a liquid crystal layer 23, and a first electrode 21 and a second electrode 24 that drive liquid crystals to realize a curved display effect. Different liquid crystal deflection states correspond to different refractive indexes, one of the first electrode 21 and the second electrode 24 is an independent electrode separated from each other, the other is a plate electrode, or the first electrode 21 and the second electrode 24 are independent electrodes separated from each other, proper driving voltage is applied to the first electrode 21 and the second electrode 24, a curve with the refractive index smoothly changing along each position of the curved surface according with the curved surface display requirement can be obtained theoretically,
the liquid crystal lens 20 is divided into a plurality of lens units 200, each lens unit 200 can be driven individually, and the electrodes (the first electrode 21 and the second electrode 24) of the lens unit 200 are applied with appropriate driving voltages so that the refraction angles of the lens units 200 arranged along the equivalent curved surface are gradually increased from the optimal viewing point corresponding position to both sides. As shown in fig. 4, the equivalent curved surface 30 of the liquid crystal lens 20 in fig. 3 is shown, where O is the best viewpoint corresponding position, and the refraction angles of the lens units 200 on both sides gradually increase from the position indicated by O.
Specifically, the refractive index of each lens unit 200 can be calculated from the predetermined equivalent curved surface 30 and the optimal viewing point thereof, and the driving voltage required by each lens unit 200 can be determined according to the refractive index of each lens unit 200.
In addition, the liquid crystal lens 20 exhibits a curved display effect in which the refraction angle of each lens unit 200 gradually increases from the center to both sides in the longitudinal direction of the flat display device; more preferably, it may also be: the latter scheme is particularly suitable for large screen display in cinema and the like. It will be understood by those skilled in the art that the above-described gradual increase in the refraction angle of each lens unit 200 is not limited to one direction.
The liquid crystal lens provided by the embodiment can generate the effect of curved surface display when being attached to a flat display device, and is simple in structure and approximately similar to the liquid crystal panel structure, and production equipment of the liquid crystal panel can be utilized, so that the liquid crystal lens provided by the embodiment is easy to manufacture and low in cost; meanwhile, the liquid crystal lens does not need to be designed into a curved surface shape, the occupied physical space is small, and the quality problem of a traditional curved surface product caused by stress concentration does not exist.
In a first alternative embodiment of this embodiment, when the liquid crystal lens 20 is attached to the exterior of the flat panel display device, one pixel of the flat panel display device 10 corresponds to one lens unit 200; it is also possible that one pixel of the flat display device 10 corresponds to a plurality of lens units 200, and the lens units 200 corresponding to the same pixel are continuously distributed (i.e., distributed in a continuous area). One pixel on the flat panel display device 10 corresponds to one or more lens units 200, so that the emergent light of the same pixel can be ensured to enter the eyes of the viewer after being refracted by one or more lens units 200, and the phenomenon that the emergent light of different pixels is mixed after being refracted by the lens units 200 to influence the display effect is avoided.
In a second optional implementation of this embodiment, the lens units 200 are distributed in groups, each group of lens units 200 corresponds to an equivalent curved surface, each equivalent curved surface corresponds to an optimal viewing point, and is suitable for multiple people to view, and multiple people all located at the optimal viewing point can obtain the optimal viewing effect. As shown in fig. 5, the lens units 200 are divided into two groups, the lens unit 200A belongs to the first group of lens units, each lens unit 200A applies a suitable driving voltage, and the optimal viewing point a formed by the equivalent curved surface thereof is located at the position of the viewer 1; the lens unit 200B belongs to the second group of lens units, and each lens unit 200B applies a suitable driving voltage, and the optimal viewing point B formed by the equivalent curved surface is located at the position of the viewer 2, so that the viewer 1 and the viewer 2 can obtain the optimal viewing experience.
Further preferably, in combination with the automatic human eye detection technology, the number of viewers and the position of each viewer's eye are obtained first, and then an optimal viewing point can be automatically set for each viewer, so that the viewers can obtain the optimal viewing experience.
In a third alternative embodiment of this embodiment, on the basis of the second embodiment, if one pixel of the above-mentioned flat panel display device 10 corresponds to one lens unit 200, the lens units 200 corresponding to adjacent pixels are respectively located in different groups; if a pixel of the flat panel display device 10 corresponds to a plurality of lens units 200, the lens units 200 corresponding to the same pixel are respectively located in different groups, so that it is ensured that the pixels are uniformly distributed on the whole screen, the whole impression of the picture can be obtained, and the loss of resolution due to the curved surface display realized by the liquid crystal lens is avoided as much as possible. Under the best condition, one pixel corresponds to a plurality of lens units 200, and each lens unit 200 corresponding to the same pixel is grouped according to the number of viewers, so that each viewer can receive the display information of each pixel, each viewer can obtain the best viewing experience, and the resolution is not lost due to the curved surface display realized by arranging the liquid crystal lens.
The liquid crystal lens provided by the embodiment can generate the curved surface display effect when being attached to a flat display device, is easy to manufacture, has low cost and small occupied physical space, and does not have the quality problem caused by stress concentration of the traditional curved surface product.
Based on the above liquid crystal lens, an embodiment of the present invention further provides a display device, including: a flat display device 10 and a liquid crystal lens 20 according to any one of the above; the flat panel display device 10 may be a liquid crystal panel, an OLED display device, or other flat panel display devices, which is not limited in this embodiment, and the liquid crystal lens 20 of this embodiment is used to be attached to the outside of the flat panel display device 10 to achieve a curved display effect.
The curved surface display device provided by the embodiment of the invention sequentially comprises a backlight module, a display panel (namely a flat display device, a liquid crystal flat display device is taken as an example) and a liquid crystal lens from bottom to top, wherein the liquid crystal lens can be adhered to the display panel through Optical Clear Adhesive (OCA), and the display panel sequentially comprises a lower polarizer, an array substrate, liquid crystal, a color film substrate and an upper polarizer from bottom to top. The liquid crystal lens 20 may also share a substrate with a color film substrate of the flat panel display device 10, that is, a process of forming the liquid crystal lens is performed on one surface of the substrate, and a process of forming the color film substrate is performed on the other surface of the substrate, so that raw materials can be saved and the display device can be thinned.
The display device is a planar device, can realize the effect of curved surface display, is easy to manufacture, has low cost and long service life, and occupies small physical space. The display device may be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
Referring to fig. 6, when N optimal viewing points need to be set at the same time, where N is a natural number, the display device further includes: a first setting unit 31 for dividing the lens units 200 of the liquid crystal lens 20 into N groups and assigning one group of lens units 200 for each optimal viewing point; a second setting unit 32, configured to calculate, for each optimal viewing point, a refractive index of each lens unit 200 in the corresponding group according to a position of the optimal viewing point; a third setting unit 33 for calculating, for each lens unit 200, a driving voltage of the lens unit 200 from the refractive index of the lens unit 200.
The display device provided by the embodiment can automatically form a plurality of optimal viewing points according to the display requirements, and is suitable for being watched by a plurality of people. For example, N viewers watch simultaneously, N optimal viewing points need to be set simultaneously, the first setting unit 31 divides the lens units 200 of the liquid crystal lens 20 into N groups, and each group of lens units 200 corresponds to one optimal viewing point (one optimal viewing point corresponds to one viewer). In order to take account of the viewing effect of N viewers, when grouping, the lens units 200 corresponding to the same pixel are uniformly distributed to each group as much as possible, and if one pixel corresponds to one lens unit, the lens units corresponding to the pixels in the same preset small area are uniformly distributed to each group as much as possible. For each optimal viewing point, the second setting unit 32 calculates the refractive index of each lens unit 200 in the corresponding group according to the position of the optimal viewing point, and for each lens unit 200, the third setting unit 33 calculates the driving voltage of the lens unit 200 according to the refractive index of the lens unit 200, and the specific implementation manners of the second setting unit 32 and the third setting unit 33 are well known to those skilled in the art and will not be described in detail.
Further, as shown in fig. 6, the display device may further include: and the human eye detection device 34 is used for acquiring the number of the viewers in a preset range on the viewable side of the display device and the position of each viewer's eye, so as to determine the number and the position of the optimal viewing point to be set. The number of the optimal viewing points is the number of the viewers, and the position of the optimal viewing point is the position of the eyes of the viewers. The specific range within which the human eye detection device 34 detects can be preset.
There are several implementations of the human eye detection device 34, and an alternative exemplary scheme is as follows: human eye detection apparatus 34, comprising: the camera is used for shooting a preset range of one side which can be watched by the display device; and the image processing unit is connected with the camera and used for receiving the images shot by the camera and identifying the number of the viewers and the positions of the eyes of each viewer from the images. The specific way how the image processing identifies the eyes of the viewer and determines their position can be referred to the state of the art.
The following is briefly described by taking two-person viewing as an example, as shown in fig. 5: every two adjacent lens units respectively correspond to a viewer 1 and a viewer 2, wherein the liquid crystal lens comprises N groups of lens units, each group of lens units is an independent liquid crystal lens and is equivalent to a curved display screen, and the value of N is related to the number of the viewers and can be automatically adjusted by combining human eye detection. The equivalent bending angle of each lenticular element is indicated by a dark or light curve, the dark representing the lenticular element for viewer 1 and the light representing the lenticular element for viewer 2. Since the electrodes of each lens cell are driven independently, the electrodes of each group of lens cells are also driven independently. Therefore, the deflection angle of the liquid crystal in each group of lens units can be controlled by controlling the electrode driving voltage, thereby achieving the light deflection effect shown in fig. 5. The effect viewed by a single viewer is equivalent to the optical path shown in fig. 4. Therefore, viewers at different positions can experience the best curved surface display effect without the limitation of physical distance.
The display device provided by the embodiment has the advantages that the physical structure of the whole device is flat without radian, the problem of stress concentration does not exist, the service life is long, the device can be hung, the bending angle of light rays can be adjusted in a self-adaptive mode according to the watching position of a viewer, and the curved surface display effect is not influenced even if the device is watched by a plurality of persons.
The embodiment of the invention also provides a curved surface display method, which is suitable for the display device, and the curved surface display method comprises the following steps:
s1, calculating the refractive index of each lens unit in the liquid crystal lens according to the position of the optimal viewing point;
s2, calculating the driving voltage of the lens unit according to the refractive index of the lens unit;
and S3, loading a driving voltage to the lens unit, and simultaneously playing a display picture by the flat panel display device.
The curved surface display method provided by the invention realizes the curved surface display effect by using the planar device, and solves the problems that the existing curved surface display is not easy to hang close to the wall and the service life is short due to stress concentration.
In a first preferred implementation of this embodiment, the display device may need to set N optimal viewing points simultaneously, and the curved surface display method further includes, before step S1: dividing the lens cells 200 of the liquid crystal lens 20 into N groups and assigning one group of lens cells 200 for each of the optimal viewing points; in step S1, for each optimal viewing point, the refractive index of each lens unit 200 in the corresponding group is calculated according to the position of the optimal viewing point.
Specifically, when N optimal viewing points need to be set simultaneously, the curved surface display method provided by the present solution includes: step one, dividing the lens units 200 of the liquid crystal lens 20 into N groups, and allocating a group of lens units 200 for each optimal viewing point; step two, aiming at each optimal viewing point, calculating the refractive index of each lens unit 200 in the corresponding group according to the position of the optimal viewing point; step three, calculating the driving voltage of each lens unit according to the refractive index of the lens unit; and step four, loading a driving voltage to the lens unit, and simultaneously playing a display picture by the flat panel display device.
Further, before the step one, the method further comprises: the number of the viewers in a preset range of the viewable side of the display device and the position of each viewer's eye are obtained to determine the number and the position of the optimal viewing point to be set. The scheme automatically detects the number and the positions of the viewers and allocates an optimal viewing point for each viewer through the automatic setting of the subsequent display device, so that each viewer can obtain the optimal curved surface viewing experience.
The curved surface display method provided by the invention can realize the curved surface display effect on the premise of not changing the physical planarization of the device, combines the human eye detection function, and is used for the self-adaptive setting of the display device when being watched by a plurality of people, so that the watcher can feel the good curved surface effect at different positions.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A liquid crystal lens for achieving a curved display effect attached to the outside of a flat display device, the liquid crystal lens comprising a plurality of lens units, each lens unit comprising: a liquid crystal layer, an alignment layer, and a first electrode and a second electrode that drive the liquid crystal layer; the lens units are driven independently, so that the refraction angles of the lens units arranged along the equivalent curved surface are gradually increased from the corresponding position of the optimal viewing point to two sides;
the lens units are distributed in groups, each group of lens units comprises at least two groups, each group of lens units corresponds to an equivalent curved surface, and each equivalent curved surface corresponds to an optimal viewing point; the number of the optimal viewing points is greater than or equal to 2;
when the liquid crystal lens is attached to the outside of the flat panel display device, one pixel of the flat panel display device corresponds to one lens unit, and the lens units corresponding to adjacent pixels are respectively positioned in different groups; or,
one pixel of the flat panel display device corresponds to a plurality of the lens units, the lens units corresponding to the same pixel are continuously distributed, the lens units corresponding to the same pixel are respectively positioned in different groups, and the lens units corresponding to the same pixel are grouped according to the number of the optimal viewing points.
2. A display device, comprising: a flat display device, and the liquid crystal lens of claim 1; the liquid crystal lens is used for being attached to the outer part of the plane display device to realize a curved surface display effect.
3. The display device according to claim 2, wherein the display device requires N optimal viewing points, N ≧ 2, the display device further comprising:
a first setting unit for dividing the lens units of the liquid crystal lens into N groups and assigning a group of lens units to each of the optimal viewing points;
the second setting unit is used for calculating the refractive index of each lens unit in the corresponding group according to the position of each optimal viewing point aiming at each optimal viewing point;
a third setting unit for calculating, for each lens unit, a driving voltage of the lens unit according to a refractive index of the lens unit.
4. The display device according to claim 3, further comprising:
and the human eye detection device is used for acquiring the number of the viewers and the position of each viewer's eye in a preset range on the viewable side of the display device so as to determine the number and the position of the optimal viewing point to be set.
5. The display device according to claim 4, wherein the human eye detection device comprises:
the camera is used for shooting a preset range of one side which can be watched by the display device;
and the image processing unit is connected with the camera and used for receiving the images shot by the camera and identifying the number of the viewers and the positions of the eyes of each viewer from the images.
6. A curved surface display method of the display device according to claim 2, comprising:
s1, calculating the refractive index of each lens unit in the liquid crystal lens according to the position of the optimal viewing point;
s2, calculating the driving voltage of the lens unit according to the refractive index of the lens unit;
and S3, loading a driving voltage to the lens unit, and simultaneously playing a display picture by the flat panel display device.
7. The curved surface display method according to claim 6, wherein when the display device needs to set N optimal viewing points simultaneously, the curved surface display method further comprises, before step S1:
dividing lens units of the liquid crystal lens into N groups, and distributing a group of lens units for each optimal viewing point; and,
in step S1, for each optimal viewing point, the refractive index of each lens unit in the corresponding group is calculated according to the position of the optimal viewing point.
8. The curved surface display method according to claim 7, wherein before said dividing the lens units of the liquid crystal lens into N groups and assigning a group of lens units to each of said optimal viewing points, further comprising:
the number of the viewers in a preset range of the viewable side of the display device and the position of each viewer's eye are obtained to determine the number and the position of the optimal viewing point to be set.
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| CN105629622A (en) * | 2016-04-07 | 2016-06-01 | 京东方科技集团股份有限公司 | Display module and control method thereof and display device |
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