CN115032809B - Liquid crystal spliced large screen compatible with 2D and 3D display and large screen preparation method - Google Patents
Liquid crystal spliced large screen compatible with 2D and 3D display and large screen preparation method Download PDFInfo
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- CN115032809B CN115032809B CN202210786109.7A CN202210786109A CN115032809B CN 115032809 B CN115032809 B CN 115032809B CN 202210786109 A CN202210786109 A CN 202210786109A CN 115032809 B CN115032809 B CN 115032809B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133502—Antiglare, refractive index matching layers
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses a liquid crystal spliced large screen compatible with 2D and 3D display and a preparation method of the large screen, belongs to the technical field of 3D display, and aims to solve the problem that 2D cannot be compatibly displayed in the 3D display of the traditional liquid crystal spliced screen by adopting a cylindrical lens light splitting technology. The liquid crystal display panel comprises a liquid crystal spliced screen 400, a 1/2 phase difference layer 104 and a 1/4 phase difference layer 105, wherein a linear polarization layer is arranged on the light emergent side of the liquid crystal spliced screen 400, the resolution of a pixel matrix of the liquid crystal spliced screen 400 is halved, the linear polarization layer side of the liquid crystal spliced screen 400 realizes passive 3D imaging output by arranging the 1/2 phase difference layer 104 and the 1/4 phase difference layer 105, and the included angle between the 1/4 phase difference layer 105 and the light transmission direction of the linear polarization layer of the liquid crystal spliced screen 400 is 45 degrees or-45 degrees. The 2D sheet source is viewed with normal naked eyes, and the 3D image can be viewed by wearing 3D glasses.
Description
Technical Field
The invention belongs to the technical field of 3D display.
Background
In the large-screen display technology, an LED screen and a liquid crystal spliced screen occupy a half-wall Jiangshan, and are still the main stream of current market development. And the LED display screen still has no advantage when being compared with the liquid crystal spliced screen. The LED is composed of self-luminous lamp beads, the resolution is related to the physical structure of the LED lamp beads, the particle sense is strong when the LED lamp beads are watched, the manufacturing cost is higher as the dot distance is smaller, and the resolution is more than 3 times of that of a liquid crystal spliced screen. Compared with LEDs, the resolution ratio of the liquid crystal spliced screen is higher, the image display is clearer, but the 3D display is realized on the liquid crystal spliced screen mainly through the mainstream cylindrical lens light splitting technology, the technology can not be compatible with 2D when the liquid crystal spliced screen realizes the 3D display, and the application scene with high definition requirement on the liquid crystal spliced screen is limited.
The technical scheme of 3D display of a large screen is needed to realize 3D display, has no influence on 2D display, and simultaneously can avoid the problems of strong granular sense of LEDs, low definition and high manufacturing cost at present.
Disclosure of Invention
Aiming at the problem that the 2D display cannot be compatible with the 3D display of the existing liquid crystal spliced screen by adopting a cylindrical lens light splitting technology, the invention provides a liquid crystal spliced large screen compatible with 2D and 3D display and a preparation method of the large screen.
The invention discloses a liquid crystal spliced large screen compatible with 2D and 3D display, which comprises a liquid crystal spliced screen 400, a 1/2 phase difference layer 104 and a 1/4 phase difference layer 105, wherein a linear polarization layer is arranged on the light emergent side of the liquid crystal spliced screen 400, the resolution of a pixel matrix of the liquid crystal spliced screen 400 is halved, the linear polarization layer side of the liquid crystal spliced screen 400 realizes passive 3D imaging output by arranging the 1/2 phase difference layer 104 and the 1/4 phase difference layer 105, and the included angle between the 1/4 phase difference layer 105 and the light transmission direction of the linear polarization layer of the liquid crystal spliced screen 400 is 45 degrees or-45 degrees.
Preferably, the pixel matrix resolution of the liquid crystal panel 400 is halved in a control manner:
an effective control mode of interlacing sub-pixels is adopted, one row of sub-pixels are set as effective sub-pixels 101, and the adjacent row of sub-pixels are set as ineffective sub-pixels 102;
or a column-separated sub-pixel effective control mode is adopted, one column of sub-pixels is set as an effective sub-pixel 101, and the adjacent column of sub-pixels is set as an ineffective sub-pixel 102.
Preferably, the 1/2 phase difference layer 104 is composed of active regions and inactive regions alternately arranged:
when the pixel matrix of the liquid crystal spliced screen 400 adopts an interlacing sub-pixel effective control mode, the 1/2 phase difference layer 104 is formed by alternately arranging an effective line A and an ineffective line B with equal widths, the effective line A and the ineffective line B are respectively opposite to and cover one row of effective sub-pixels 101, the pitch of one group of 1/2 phase difference layers 104 is 4 rows of sub-pixels, and the boundaries are respectively positioned at the central lines of the two rows of ineffective sub-pixels;
when the pixel matrix of the liquid crystal spliced screen 400 adopts an effective control mode of separating columns of sub-pixels, the 1/2 phase difference layer 104 is formed by alternately arranging active columns C and inactive columns D with equal widths, the active columns C and the inactive columns D are respectively opposite to and cover one column of the active sub-pixels 101, the pitch of one group of 1/2 phase difference layers 104 is 4 columns of sub-pixels, and the boundaries are respectively positioned at the central lines of the two columns of inactive sub-pixels.
Preferably, an antiglare layer 200 is further included, the antiglare layer 200 being provided on the light-emitting side of the 1/2 retardation layer 104 or the 1/4 retardation layer 105.
On the other hand, the preparation method of the large liquid crystal spliced screen comprises the following steps:
a1, aligning and attaching A1/4 phase difference layer 105 on the light emitting side of a linear polarization layer of the liquid crystal spliced screen 400;
a2, aligning and bonding the 1/2 phase difference layer 104 on the light-emitting side surface of the 1/4 phase difference layer 105;
the effective area of the 1/2 phase difference layer 104 spans 3 sub-pixels, and the width is the center distance between two adjacent ineffective pixels;
a3, forming a homogenizing layer 103 on the light emitting side of the 1/2 phase difference layer 104;
and A4, forming an anti-dazzle layer 200 on the surface of the homogenizing layer 103, and preparing the liquid crystal spliced large screen compatible with 2D and 3D display.
In yet another aspect, a method for manufacturing a large liquid crystal display panel, the method comprising the steps of:
b1, forming an antiglare layer 200 on the light-emitting side surface of the 1/4 retardation layer 105;
b2, covering the 1/2 phase difference layer 104 on the light inlet side surface of the 1/4 phase difference layer 105 in an aligned manner to prepare a 3D unit;
the effective area of the 1/2 phase difference layer 104 spans 3 sub-pixels, and the width is the center distance between two adjacent ineffective pixels;
b3, the 3D unit is aligned and attached to the liquid crystal splicing screen 400, and the principle of alignment and attachment is as follows: the 1/2 phase difference layer 104 in the 3D unit is aligned with the pixel matrix of the liquid crystal spliced screen 400, so that the preparation of the liquid crystal spliced large screen compatible with 2D and 3D display is completed.
The invention has the beneficial effects that: 1. polarization display is realized on the liquid crystal spliced screen, so that a polarization layer on the surface of the liquid crystal spliced screen is completely utilized, and the material thickness is saved; 2. the technical scheme of halving row or column resolution is adopted on the liquid crystal spliced screen, so that the technical problem of a small-spacing 1/2 phase difference pitch realization process is solved on the aspect of realizing a 1/2 phase difference process, and mass production is facilitated.
Drawings
FIG. 1 is a schematic diagram of halving row pixels when a large screen row is spliced for output display;
FIG. 2 is a schematic diagram of halving column pixels when a large-screen column is spliced for output display;
FIG. 3 is a schematic diagram of alignment of 1/2 phase difference films and row pixels in the case of liquid crystal spliced large-screen row output display;
FIG. 4 is a schematic diagram of alignment of 1/2 retardation film and column pixels in the case of liquid crystal display with large panel column output;
FIG. 5 is a schematic diagram of a method for manufacturing a large screen according to the second embodiment;
fig. 6 is a schematic diagram of a large screen manufacturing method according to the third embodiment.
101. Effective sub-pixel 102, ineffective sub-pixel 103, homogenizing layer 104, 1/2 phase difference layer, 105, 1/4 phase difference layer, 200, antiglare layer, 400, and liquid crystal spliced screen.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
The first embodiment is as follows: the following description is made with reference to fig. 1 to 5, where a large liquid crystal spliced screen compatible with 2D and 3D display according to this embodiment includes a liquid crystal spliced screen 400, a 1/2 phase difference layer 104 and a 1/4 phase difference layer 105, a linear polarization layer is disposed on a light emitting side of the liquid crystal spliced screen 400, a resolution of a pixel matrix of the liquid crystal spliced screen 400 is halved, and a passive 3D imaging output is implemented on a linear polarization layer side of the liquid crystal spliced screen 400 by disposing the 1/2 phase difference layer 104 and the 1/4 phase difference layer 105, where an included angle between the 1/4 phase difference layer 105 and a light transmitting direction of the linear polarization layer of the liquid crystal spliced screen 400 is 45 ° or-45 °.
The pixel matrix resolution halving control mode of the liquid crystal spliced screen 400 is as follows:
an effective control mode of interlacing sub-pixels is adopted, one row of sub-pixels are set as effective sub-pixels 101, and the adjacent row of sub-pixels are set as ineffective sub-pixels 102;
or a column-separated sub-pixel effective control mode is adopted, one column of sub-pixels is set as an effective sub-pixel 101, and the adjacent column of sub-pixels is set as an ineffective sub-pixel 102.
The 1/2 retardation layer 104 is composed of active areas and inactive areas alternately arranged:
when the pixel matrix of the liquid crystal spliced screen 400 adopts an interlacing sub-pixel effective control mode, the 1/2 phase difference layer 104 is formed by alternately arranging an effective line A and an ineffective line B with equal widths, the effective line A and the ineffective line B are respectively opposite to and cover one row of effective sub-pixels 101, the pitch of one group of 1/2 phase difference layers 104 is 4 rows of sub-pixels, and the boundaries are respectively positioned at the central lines of the two rows of ineffective sub-pixels;
when the pixel matrix of the liquid crystal spliced screen 400 adopts an effective control mode of separating columns of sub-pixels, the 1/2 phase difference layer 104 is formed by alternately arranging active columns C and inactive columns D with equal widths, the active columns C and the inactive columns D are respectively opposite to and cover one column of the active sub-pixels 101, the pitch of one group of 1/2 phase difference layers 104 is 4 columns of sub-pixels, and the boundaries are respectively positioned at the central lines of the two columns of inactive sub-pixels.
Further, an antiglare layer 200 is further included, and the antiglare layer 200 is provided on the light-emitting side of the 1/2 retardation layer 104 or the 1/4 retardation layer 105.
The liquid crystal spliced screen performs interval arrangement display of images through a 3D splicer in 3D use, namely, line output resolution is halved when interval is adopted, as shown in figure 1; with the columns apart, the column output resolution is halved as shown in fig. 2. The 1/4 phase difference layer 105 forms an included angle of 45 degrees or-45 degrees with the linear polarization layer of the liquid crystal spliced screen 400. The 1/2 phase difference layers 104 are arranged at equal intervals, and the pitch width is 4 times of the row pixels or the column pixels of the liquid crystal spliced screen.
Referring to fig. 5, an image output by the liquid crystal spliced screen 400 outputs linearly polarized light through a linear polarization layer at the light-emitting side, outputs circularly polarized light through a 1/4 phase difference layer 105, outputs alternately arranged left-handed and right-handed optical rotation through a 1/2 phase difference layer 104, and can be viewed by a viewer wearing 3D glasses. If the 2D image is watched, only the 2D film source is needed to be played and watched by naked eyes, and the resolution is lost by half.
The resolution of the lcd is high, if the effective row/column and the ineffective row/column width of the 1/2 retardation layer 104 are very small, and the width is too small to be suitable for 3D display, and in general, the resolution of the LED is low, the optical element commonly used in 3D display is the 1/2 retardation layer, and in recognition of those skilled in the art, the effective row/column and the ineffective row/column width of the 1/2 retardation layer 104 are insufficient to match the high resolution of the liquid crystal, so that no one can apply the same to the 3D display of the lcd.
The 1/2 phase difference layer 104 is applied to 3D display of the liquid crystal screen at the cost of resolution, firstly, the liquid crystal screen is high in resolution, even if half of the liquid crystal screen is sacrificed, the output image quality is higher than that of an LED display effect, no granular feel is caused, and secondly, 2D display is not affected after the 1/2 phase difference layer 104 and the 1/4 phase difference layer 105 are applied, so that the purposes of large screen, compatibility of 2D and 3D display and low cost are achieved.
In a specific embodiment, taking a 55 inch 2×2 spliced screen as an example, the original pixel point distance is 0.63mm, a process of halving the resolution of rows or columns is adopted, the 1/2 phase difference pitch can be set to be 1.26mm, and the total resolution of the 2×2 spliced screen is 3840×2160; the resolution at the time of realizing the 3D output becomes 1920×2160 or 3840×1080, and still satisfies the requirement.
The second embodiment is as follows: the following describes the present embodiment with reference to fig. 5, and the method for manufacturing a large screen according to the present embodiment is implemented based on the liquid crystal spliced large screen compatible with 2D and 3D display according to the first embodiment, and includes the following steps:
a1, aligning and attaching A1/4 phase difference layer 105 on the light emitting side of a linear polarization layer of the liquid crystal spliced screen 400;
a2, aligning and bonding the 1/2 phase difference layer 104 on the light-emitting side surface of the 1/4 phase difference layer 105;
the effective area of the 1/2 phase difference layer 104 spans 3 sub-pixels, and the width is the center distance between two adjacent ineffective sub-pixels;
a3, forming a homogenizing layer 103 on the light emitting side of the 1/2 phase difference layer 104;
and A4, forming an anti-dazzle layer 200 on the surface of the homogenizing layer 103, and preparing the liquid crystal spliced large screen compatible with 2D and 3D display.
And a third specific embodiment: the following describes the present embodiment with reference to fig. 6, and the method for manufacturing a large screen according to the present embodiment is implemented based on the liquid crystal spliced large screen compatible with 2D and 3D display according to the first embodiment, and includes the following steps:
b1, forming an antiglare layer 200 on the light-emitting side surface of the 1/4 retardation layer 105;
b2, covering the 1/2 phase difference layer 104 on the light inlet side surface of the 1/4 phase difference layer 105 in an aligned manner to prepare a 3D unit;
the effective area of the 1/2 phase difference layer 104 spans 3 sub-pixels, and the width is the center distance between two adjacent ineffective sub-pixels;
b3, the 3D unit is aligned and attached to the liquid crystal splicing screen 400, and the principle of alignment and attachment is as follows: the 1/2 phase difference layer 104 in the 3D unit is aligned with the pixel matrix of the liquid crystal spliced screen 400, so that the preparation of the liquid crystal spliced large screen compatible with 2D and 3D display is completed.
The preparation process of the embodiment is faster than that of the second embodiment, the 3D unit can be prepared in advance, and then the 3D unit is aligned and stuck with the liquid crystal splicing screen 400 uniformly, so that the process steps are divided into two large blocks, and the control is easy.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.
Claims (4)
1. The liquid crystal spliced large screen compatible with 2D and 3D display is characterized by comprising a liquid crystal spliced screen (400), a 1/2 phase difference layer (104) and a 1/4 phase difference layer (105), wherein a linear polarization layer is arranged on the light emergent side of the liquid crystal spliced screen (400), the resolution of a pixel matrix of the liquid crystal spliced screen (400) is halved, the linear polarization layer side of the liquid crystal spliced screen (400) realizes passive 3D imaging output by arranging the 1/2 phase difference layer (104) and the 1/4 phase difference layer (105), and the included angle between the 1/4 phase difference layer (105) and the light transmission direction of the linear polarization layer of the liquid crystal spliced screen (400) is 45 degrees or-45 degrees;
the resolution halving control mode of the pixel matrix of the liquid crystal spliced screen (400) is as follows:
an effective control mode of interlacing sub-pixels is adopted, one row of sub-pixels are set as effective sub-pixels (101), and the adjacent row of sub-pixels are set as ineffective sub-pixels (102);
or a column-separated sub-pixel effective control mode is adopted, one column of sub-pixels are set as effective sub-pixels (101), and the adjacent column of sub-pixels are set as ineffective sub-pixels (102);
the 1/2 phase difference layer (104) is composed of active areas and inactive areas alternately arranged:
when the pixel matrix of the liquid crystal spliced screen (400) adopts an interlacing sub-pixel effective control mode, the 1/2 phase difference layer (104) is formed by alternately arranging an effective row A and an ineffective row B with equal widths, the effective row A and the ineffective row B are respectively opposite to and cover one row of effective sub-pixels (101), the pitch of one group of 1/2 phase difference layers (104) is 4 rows of sub-pixels, and the boundaries are respectively at the central lines of the two rows of ineffective sub-pixels;
when the pixel matrix of the liquid crystal spliced screen (400) adopts an effective control mode of spaced-column sub-pixels, the 1/2 phase difference layer (104) is formed by alternately arranging an effective column C and an ineffective column D with equal widths, the effective column C and the ineffective column D are respectively opposite to and cover one column of effective sub-pixels (101), the pitch of one group of 1/2 phase difference layers (104) is 4 columns of sub-pixels, and the boundaries are respectively arranged at the central lines of the two columns of ineffective sub-pixels.
2. The large liquid crystal display panel compatible with 2D and 3D display according to claim 1, further comprising an anti-dazzle layer (200), wherein the anti-dazzle layer (200) is arranged on the light-emitting side of the 1/2 phase difference layer (104) or the 1/4 phase difference layer (105).
3. The method for preparing the large liquid crystal spliced screen is realized based on the large liquid crystal spliced screen compatible with 2D and 3D display according to claim 2, and is characterized by comprising the following steps:
a1, aligning and attaching A1/4 phase difference layer (105) on the light emitting side of a linear polarization layer of the liquid crystal spliced screen (400);
a2, attaching a 1/2 phase difference layer (104) to the light-emitting side surface of the 1/4 phase difference layer (105) in an aligned manner;
the width of the effective area of the 1/2 phase difference layer (104) is the center distance of two adjacent rows of ineffective sub-pixels or the center distance of two adjacent columns of ineffective sub-pixels;
a3, forming a homogenizing layer (103) on the light-emitting side of the 1/2 phase difference layer (104);
and A4, forming an anti-dazzle layer (200) on the surface of the homogenizing layer (103) to finish the preparation of the liquid crystal spliced large screen compatible with 2D and 3D display.
4. The method for preparing the large liquid crystal spliced screen is realized based on the large liquid crystal spliced screen compatible with 2D and 3D display according to claim 2, and is characterized by comprising the following steps:
b1, forming an antiglare layer (200) on the light-emitting side surface of the 1/4 phase difference layer (105);
b2, aligning and covering the 1/2 phase difference layer (104) on the light inlet side surface of the 1/4 phase difference layer (105) to prepare a 3D unit;
the width of the effective area of the 1/2 phase difference layer (104) is the center distance of two adjacent rows of ineffective sub-pixels or the center distance of two adjacent columns of ineffective sub-pixels;
b3, fitting the 3D unit on the liquid crystal spliced screen (400) in an alignment manner, wherein the principle of fitting in the alignment manner is as follows: and aligning the 1/2 phase difference layer (104) in the 3D unit with the pixel matrix of the liquid crystal spliced screen (400) to finish the preparation of the liquid crystal spliced large screen compatible with 2D and 3D display.
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