CN112904620A - Double-domain optical alignment LCD light path system - Google Patents

Double-domain optical alignment LCD light path system Download PDF

Info

Publication number
CN112904620A
CN112904620A CN202110107547.1A CN202110107547A CN112904620A CN 112904620 A CN112904620 A CN 112904620A CN 202110107547 A CN202110107547 A CN 202110107547A CN 112904620 A CN112904620 A CN 112904620A
Authority
CN
China
Prior art keywords
alignment
light
domain
aligned
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110107547.1A
Other languages
Chinese (zh)
Inventor
林坚普
王栋
张永爱
郭太良
周雄图
吴朝兴
林志贤
刘皓轩
徐万颜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuzhou University
Mindu Innovation Laboratory
Original Assignee
Fuzhou University
Mindu Innovation Laboratory
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuzhou University, Mindu Innovation Laboratory filed Critical Fuzhou University
Priority to CN202110107547.1A priority Critical patent/CN112904620A/en
Publication of CN112904620A publication Critical patent/CN112904620A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention provides a double-domain optical alignment LCD light path system, which comprises: the light source module is used for providing two groups of double-domain alignment light sources with different incidence directions; the mask module comprises a mask with a light-transmitting area and a non-light-transmitting area; a substrate to be aligned, comprising: two groups of alignment regions with different alignment angles; the alignment angle corresponds to the incident direction of the double-domain alignment light source; each light-transmitting area corresponds to one display pixel of the substrate to be aligned, and each display pixel comprises two alignment areas with different alignment angles; the mask is arranged between the substrate to be aligned and the light source module, and the projection of the center position of the light-transmitting area of the mask on the substrate to be aligned is positioned in the middle of two alignment areas in the same display pixel. Aiming at solving the problem of the alignment error of the mask plate in the double-domain photo-alignment process, reducing the exposure times and increasing the productivity.

Description

Double-domain optical alignment LCD light path system
Technical Field
The invention belongs to the technical field of optical alignment, and particularly relates to a double-domain optical alignment LCD light path system.
Background
The human body obtains 70% of external information from vision, and with the development of scientific technology, a display becomes an important tool for information transmission and man-machine communication. The most mature Display technology in the contemporary generation, the most popular Thin Film Transistor Liquid Crystal Display (TFT-LCD) with the highest market share. The TFT-LCD operates on the principle that the arrangement of the liquid crystal molecules inside the TFT-LCD changes under the action of an electric field, which is called the electro-optic effect. The change of the liquid crystal molecular structure influences the change of light passing through the liquid crystal molecular structure, then the light and shade change can be shown under the action of the polarizer, and then the gray level and the brightness change of the light can be finally controlled by controlling an electric field by matching with a Color Filter (CF), so that the aim of displaying images is fulfilled. In the TFT-LCD device, in order to improve the response speed, it is necessary to align the liquid crystal molecules at the electrode interface and form a certain pretilt angle, so that the alignment operation of the alignment films on the surfaces of the TFT substrate and the CF substrate is required in the production process. The current alignment technology is divided into rubbing alignment and photo-alignment, wherein the photo-alignment technology mainly uses an alignment material with high ultraviolet light sensitivity and good stability for light alignment. Compared with the rubbing alignment technology, the photo-alignment technology has the advantages of non-contact, no pollution, no static electricity, realization of multi-domain alignment and the like, thereby being widely applied.
The existing double-domain photo-alignment technology adopts contact exposure or proximity exposure, needs two times of alignment and two times of exposure, has errors in alignment on one hand, can cause two alignment regions to overlap for multiple times of alignment or deviate from each other to form an unaligned region, and on the other hand, increases the working procedure time and reduces the productivity by carrying out two times of exposure.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a double-domain photo-alignment LCD light path system, aiming at solving the problem of alignment error of a mask plate in the double-domain photo-alignment process, reducing exposure times and increasing productivity.
The invention specifically adopts the following technical scheme:
a dual-domain optical alignment LCD light path system, comprising:
the light source module is used for providing two groups of double-domain alignment light sources with different incidence directions;
the mask module comprises a mask with a light-transmitting area and a non-light-transmitting area;
a substrate to be aligned, comprising: two groups of alignment regions with different alignment angles;
the alignment angle corresponds to the incident direction of the double-domain alignment light source; each light-transmitting area corresponds to one display pixel of the substrate to be aligned, and each display pixel comprises two alignment areas with different alignment angles; the mask is arranged between the substrate to be aligned and the light source module, and the projection of the center position of the light-transmitting area of the mask on the substrate to be aligned is positioned in the middle of two alignment areas in the same display pixel;
under the condition that the relative position of the mask and the substrate to be aligned is kept unchanged, the two groups of double-domain alignment light sources provided by the light source module penetrate through the light-transmitting area of the mask at the same time and project to different groups of alignment areas.
Preferably, the substrate to be aligned is mounted on a loading platform.
Preferably, the incident directions of the two sets of double-domain alignment light sources are respectively a first incident angle θ1And a firstTwo angles of incidence theta2Incident at a first angle of incidence theta1And a second incident angle theta2Is the angle between the incident direction and the normal of the substrate to be aligned and has a value of theta2＝-θ1；
The distance between the mask and the substrate to be aligned is a first distance d;
the two alignment regions in the same display pixel are respectively a first alignment region and a second alignment region, the alignment width is a first width p, and the gap between the first alignment region and the second alignment region is a first gap q;
the first incident angle theta1A second incident angle theta2The first distance d, the first width p and the first gap q have d equal to 0.5 × (p + q) × | cot θ1The relationship of | is given.
Preferably, the mask plate module is fixedly arranged, so that the first distance d is kept unchanged; the light source module is of an adjustable structure and is used for adjusting a first incident angle theta1And a second incident angle theta2And projecting the two groups of double-domain alignment light sources to different groups of alignment areas.
Preferably, the light source module provides a first incident angle θ1And a second incident angle theta2Keeping the same; the first distance d between the mask and the substrate to be aligned is adjustable, so that the two groups of double-domain alignment light sources are projected to different groups of alignment areas.
Preferably, the two alignment regions of the display pixel are equally large rectangles; the size of the alignment area is the same as that of the light-transmitting area.
Preferably, a plurality of the display pixels constitute a column of pixel groups; and one row of the pixel components are divided into a left alignment block group and a right alignment block group, and the left alignment block group, the right alignment block group and the light-transmitting zone are rectangles with equal width.
Preferably, when the light source module aligns the substrates to be aligned, the light source module simultaneously generates two sets of double-domain alignment light sources with different incident directions to align the substrates to be aligned.
Preferably, the light source module includes: an initial light source lamp, a half-reflecting and half-transmitting mirror and a reflecting mirror;
the initial light emitted by the initial light source lamp passes through the semi-reflecting semi-transmitting mirror and the reflecting mirror and is divided into two groups of double-domain light alignment light with different incidence directions to be used as double-domain alignment light sources.
Preferably, the mask module is mounted on a lifting mechanism, and the lifting mechanism is used for changing the distance between the mask and the substrate to be aligned.
Compared with the prior art, the beneficial effects of the invention and the preferred scheme thereof comprise: 1. the mask is arranged between the loading platform and the light source module, and the projection of the light-transmitting area of the mask is positioned between the two alignment areas in the same display pixel at the center of the substrate to be aligned. The light-transmitting area is arranged above the middle of the two alignment areas, so that the light-transmitting area can align the alignment areas with two different alignment angles at the same time, and the alignment efficiency is improved. 2. Under the condition of keeping the relative position of the mask plate module and the substrate to be aligned unchanged, the two groups of double-domain alignment light sources provided by the light source module penetrate through the light-transmitting area of the mask plate module at the same time and project to different groups of alignment areas.
The design has the following advantages: firstly, the relative position of the mask module and the substrate to be aligned is kept unchanged all the time in the alignment process, and the mask is not required to be adjusted for alignment in comparison with the prior art, so that the situation that part of the alignment area is aligned by two groups of light sources in different directions or part of the alignment area is not aligned due to alignment errors is avoided. And the two groups of double-domain alignment light sources penetrate through the light-transmitting areas of the mask module at the same time and project to different groups of alignment areas. Therefore, two groups of alignment regions with different alignment angles can be simultaneously aligned by one-time exposure, and compared with the prior art, the exposure times are reduced, so that the production efficiency is increased. In conclusion, the alignment method and the alignment device not only solve the alignment problem in the double-domain photo-alignment process, ensure the alignment accuracy, but also improve the alignment efficiency.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic structural diagram of a dual-domain optical alignment LCD optical path system according to an embodiment of the present invention;
FIG. 2 is a schematic view of alignment light path in example 1 of the present invention;
FIG. 3 is a schematic diagram of alignment light paths in example 2 of the present invention;
FIG. 4 is a schematic view of alignment light paths in example 3 of the present invention;
FIG. 5 is a schematic diagram illustrating a relationship between an alignment region, a rectangular display region and a light-transmitting region according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a relationship between an alignment region, an irregular-shaped display region and a light-transmitting region according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a relationship between a pixel group and a transparent region according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a light source forming two sets of light paths in different directions according to an embodiment of the present invention.
Detailed Description
In order to make the features and advantages of this patent more comprehensible, 3 embodiments accompanied with figures are described in detail below:
the invention discloses a double-domain optical alignment LCD light path system, which can be realized by appropriately improving technical details by taking the contents of the text as reference by the technical personnel in the field. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
In order to make the liquid crystal image better in the production process of the liquid crystal display, the liquid crystal needs to be aligned. The optical alignment technology has the advantages of non-contact, no pollution and no electrostatic lamp, and is widely applied to alignment operation of liquid crystal display screens. In the existing commonly used dual-domain photo-alignment technology, a light-transmitting area of a mask is aligned to an alignment area with the same alignment angle, and an alignment area with the other alignment angle is shielded by a non-light-transmitting area of the mask to perform first alignment; and then moving the mask plate to align the light-transmitting area of the mask plate with the alignment area of the other alignment angle for second alignment. Such a double-domain photo-alignment technique requires two alignments and two exposures, and on one hand, there is an error in the alignment, which may cause two alignment regions to overlap or deviate from each other and an unaligned region exists, and on the other hand, the two exposures increase the process time (if two exposures are used, the equipment cost input is increased), thereby reducing the throughput.
Therefore, an embodiment of the present invention provides a dual-domain optical alignment LCD optical path system, as shown in fig. 1, including:
the light source module 101 is used for providing two groups of double-domain alignment light sources with different incidence directions;
the mask module 102, the mask module 102 includes a mask, the mask includes a light-transmitting region and a non-light-transmitting region;
a loading stage 103 for loading a substrate 104 to be aligned; the substrate to be aligned 104 includes two sets of alignment regions with different alignment angles; the alignment angle corresponds to the incident direction of the double-domain alignment light source; each light-transmitting region corresponds to one display pixel of the substrate 104 to be aligned, and each display pixel comprises two alignment regions with different alignment angles; the mask is arranged between the loading platform 103 and the light source module 101, and the center of the light-transmitting area of the mask is positioned between two alignment areas in the same display pixel in the projection of the substrate 104 to be aligned;
under the condition that the relative position of the mask and the substrate 104 to be aligned is maintained unchanged, the two sets of bi-domain alignment light sources provided by the light source module 101 penetrate through the light-transmitting area of the mask at the same time and project onto different sets of alignment areas.
The substrate to be aligned 104 is typically a liquid crystal substrate. The substrate to be aligned 104 has a plurality of display pixels, and each display pixel has two alignment regions with different alignment angles. The alignment regions with two different alignment angles in each display pixel form two sets of alignment regions with different alignment angles. The alignment regions of the same group are combinations of alignment regions having the same alignment angle.
In fig. 1, two sets of arrows in different directions are two sets of double-domain alignment light sources with different incident directions.
Optionally, the design parameters of the double-domain photoalignment system include:
the incident directions of the two groups of double-domain alignment light sources are respectively a first incident angle theta1And a second incident angle theta2Incident at a first angle of incidence theta1And a second incident angle theta2Is the angle between the incident direction and the normal of the substrate 104 to be aligned and has a value of theta2＝-θ1；
The distance between the mask and the substrate 104 to be aligned on the loading platform 103 is a first distance d;
the two alignment areas in the same display pixel are respectively a first alignment area and a second alignment area, the alignment width is a first width p, and the gap between the first alignment area and the second alignment area is a first gap q; wherein, if the first alignment region is overlapped with the second alignment region, the first gap q is less than 0;
first incident angle theta1A second incident angle theta2The first distance d, the first width p and the first gap q have d equal to 0.5 × (p + q) × | cot θ1The relationship of | is given.
It should be noted that the alignment width of each alignment region is equal, and the alignment width is a projection length of the alignment region in the display pixel on the front view plane of the substrate 104 to be aligned. The front view plane of the alignment substrate is a plane perpendicular to the center lines of the two alignment regions in the display pixel. Fig. 2, 3, and 4 are optical path diagrams of the front view surface of the substrate 104 to be aligned. In the same display pixel, the gap between the two alignment regions may be an electrode.
Optionally, in the first embodiment, when the gap between two alignment regions in the same display pixel is 0, the optical path during alignment is as shown in fig. 2, where 201 in fig. 2 is a mask, and 202 is two alignment regions of the same display pixel. The first incident angle theta1A second incident angle theta2The first distance d, the first width p and the first gap q have d equal to 0.5 × p × cot θ1The relationship of | is given.
Optionally, in the second embodiment, when the gap between two alignment regions in the same display pixel is greater than 0, that is, q > 0, the optical path for performing alignment is as shown in fig. 3, where 301 in fig. 3 is a mask and 302 is the same display pixelTwo alignment regions of the display pixel. The first incident angle theta1A second incident angle theta2The first distance d, the first width p and the first gap q have d equal to 0.5 × (p + q) × | cot θ1The relationship of | is given.
Optionally, in the third embodiment, when the gap between two alignment regions in the same display pixel is smaller than 0, that is, q is smaller than 0, the light path during alignment is as shown in fig. 4, where 401 in fig. 4 is a mask, and 402 is two alignment regions of the same display pixel. The first incident angle theta1A second incident angle theta2The first distance d, the first width p and the first gap q have d equal to 0.5 × (p + q) × | cot θ1The relationship of | is given.
In the scheme of the invention, the mask module 102 can be selectively controlled to keep the first distance d unchanged; controlling the light source module 101 to adjust the first incident angle theta1And a second incident angle theta2And projecting the two groups of double-domain alignment light sources to different groups of alignment areas.
It should be noted that the first incident angle θ is adjusted1And a second incident angle theta2And then two groups of double-domain alignment light sources project to different groups of alignment areas, and the problem that the alignment effect is poor due to the fact that the light-transmitting area cannot be aligned with the middle of two alignment areas in the same pixel due to the fact that the mask is moved is avoided.
In the present invention, the light source module 101 can be selectively controlled to have the first incident angle θ1And a second incident angle theta2Keeping the same; the mask module 102 is controlled to adjust the first distance d so that the two sets of bi-domain alignment light sources project to different sets of alignment regions.
It should be noted that the first distance d is adjusted to project the two sets of dual-domain alignment light sources to the alignment regions of different sets. When the substrate to be aligned is loaded, the mask plate is moved and the first distance d is adjusted, so that the total alignment time is effectively saved.
It should be noted that the embodiments of the present invention can adapt to various substrates and perform corresponding photo alignment on various substrates by changing the incident angle or the distance from the mask to the substrate 104 to be aligned.
Optionally, the two alignment regions included in the display pixel are rectangles with equal size, and the size of the alignment region is the same as that of the light-transmitting region.
It should be noted that the display region in the alignment region may be irregular shape smaller than the alignment region, or may be rectangular shape as large as the alignment region, and the shape and the boundary of the display region do not exceed the alignment region. The display area is an area for displaying three primary colors through the optical filter and is used for imaging.
Alternatively, as shown in fig. 5, the two alignment regions included in the display pixel 501 are rectangles with equal size, and the light-transmitting region 502 is a rectangle with the same size as the alignment regions. In FIG. 5, the display area is the same size as the alignment area, i.e., the entire alignment area is the display area. Fig. 5 is a schematic view showing a gap between two alignment regions for simplicity and convenience of understanding, and does not limit the present invention.
Alternatively, as shown in fig. 6, the display pixel 601 includes two alignment regions having equal size and the light-transmitting region 602 has the same size as the alignment regions. In fig. 6, the display area is irregular in shape in the alignment region, and the size and the boundary of the display area do not exceed the alignment region, i.e., a part of the display area in the alignment region is the display area. Fig. 6 shows a gap between two alignment regions for simplicity and ease of understanding, and does not limit the present invention.
Optionally, the plurality of display pixels form a row of pixel groups, the row of pixel groups is divided into a left alignment group and a right alignment group, and the left alignment group, the right alignment group and the light-transmitting region are rectangles with equal width.
Optionally, as shown in fig. 7, a plurality of display pixels form a row of pixel group 701, the pixel group 701 includes a left alignment group and a right alignment group, and the sizes of the left and right display regions are smaller than those of the left and right alignment groups. The light-transmitting region 702 is a rectangle having the same width as the left and right alignment block groups. Gaps may exist in each display pixel in fig. 7, and gaps may also exist between two alignment region groups, which are not shown in fig. 7 for convenience of understanding, and the present invention is not limited thereto.
In practical applications, the display pixels are mostly arranged as shown in fig. 7, and one transparent region is generally used to align a row of display pixels.
It should be noted that, in the display pixel, the display area that can display three primary colors through the backlight is smaller than or equal to the alignment area. The whole alignment region is aligned to ensure that the whole display region is aligned simultaneously.
Optionally, when the light source module 101 aligns the substrate 104 to be aligned, the light source module 101 simultaneously generates two sets of two-domain alignment light sources with different incident directions to align the substrate 104 to be aligned.
It should be noted that the purpose of generating two sets of bi-domain alignment light sources simultaneously is to perform only one exposure to complete the alignment of the whole substrate 104 to be aligned. Therefore, the alignment time can be reduced, and the alignment efficiency can be improved.
Optionally, as shown in fig. 8, the light source module 101 includes: a primary light source lamp 801, a half mirror 802, and a mirror 803;
the primary light source emitted from the primary light source lamp 801 is divided into two groups of two-domain light-oriented light sources having different incident directions by the half mirror 802 and the reflecting mirror 803.
It should be noted that, in the present invention, the light source module 101 may directly adopt two light sources in different directions, or adopt one light source to form two light sources in different directions through transmission and reflection, and the purpose of adopting one light source is to reduce the number of light sources in the light source module 101, simplify the system structure, and avoid the alignment effect from being deteriorated due to the error in the parameters of the light sources caused by adopting different light sources.
Optionally, the mask module 102 is mounted on a lifting mechanism, and the lifting mechanism is configured to change a distance between the mask and the substrate 104 to be aligned by transporting the mask.
Optionally, the system further comprises: a polarizer.
And the polaroid is used for converting the double-domain light alignment light source into polarized light. The polarized light is used to adjust the alignment direction of the alignment film.
Optionally, the double-domain light-alignment light source is an ultraviolet light source with 200 and 400 nm.
In the embodiment of the invention, the mask is arranged between the loading platform 103 and the light source module 101, and the projection of the center position of the light-transmitting area of the mask on the substrate 104 to be aligned is positioned between two alignment areas in the same display pixel. The light-transmitting area is arranged above the middle of the two alignment areas, so that the light-transmitting area can align the alignment areas with two different alignment angles at the same time, and the alignment efficiency is improved. In the embodiment of the invention, under the condition that the relative position of the mask module 102 and the substrate 104 to be aligned is kept unchanged, two groups of double-domain alignment light sources provided by the light source module 101 penetrate through the light-transmitting area of the mask module 102 at the same time and project to different groups of alignment areas. Has the following advantages: firstly, the relative position between the mask module 102 and the substrate 104 to be aligned is always maintained in the alignment process, and the mask is not required to be adjusted for alignment, so that the problem that part of the alignment region is aligned by two groups of light sources in different directions or part of the alignment region is not aligned due to alignment errors in the prior art is avoided. The two sets of bi-domain alignment light sources penetrate through the light-transmitting region of the mask module 102 at the same time and project onto different sets of alignment regions. Therefore, two groups of alignment regions with different alignment angles can be simultaneously aligned by one-time exposure, and compared with the prior art, the exposure times are reduced, so that the production efficiency is increased. In summary, the embodiment of the invention not only solves the alignment problem in the double-domain photo-alignment process, ensures the alignment accuracy, but also improves the alignment efficiency.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The present invention is not limited to the above preferred embodiments, and other various forms of optical path systems for bi-domain photo-alignment LCD can be obtained by anyone who can benefit from the teaching of the present invention.

Claims (10)

1. A dual-domain optical alignment LCD light path system, comprising:
the light source module is used for providing two groups of double-domain alignment light sources with different incidence directions;
the mask module comprises a mask with a light-transmitting area and a non-light-transmitting area;
a substrate to be aligned, comprising: two groups of alignment regions with different alignment angles;
the alignment angle corresponds to the incident direction of the double-domain alignment light source; each light-transmitting area corresponds to one display pixel of the substrate to be aligned, and each display pixel comprises two alignment areas with different alignment angles; the mask is arranged between the substrate to be aligned and the light source module, and the projection of the center position of the light-transmitting area of the mask on the substrate to be aligned is positioned in the middle of two alignment areas in the same display pixel;
under the condition that the relative position of the mask and the substrate to be aligned is kept unchanged, the two groups of double-domain alignment light sources provided by the light source module penetrate through the light-transmitting area of the mask at the same time and project to different groups of alignment areas.
2. The dual domain photoalignment LCD light path system of claim 1, wherein: the substrate to be aligned is assembled on the loading platform.
3. The dual domain photoalignment LCD light path system of claim 1, wherein:
the incident directions of the two groups of the double-domain alignment light sources are respectively a first incident angle theta1And a second incident angle theta2Incident at a first angle of incidence theta1And a second incident angle theta2Is the angle between the incident direction and the normal of the substrate to be aligned and has a value of theta2＝-θ1；
The distance between the mask and the substrate to be aligned is a first distance d;
the two alignment regions in the same display pixel are respectively a first alignment region and a second alignment region, the alignment width is a first width p, and the gap between the first alignment region and the second alignment region is a first gap q;
the first incident angle theta1A second incident angle theta2The first distance d, the first width p and the first gap q have d equal to 0.5 × (p + q) × | cot θ1The relationship of | is given.
4. The dual domain photoalignment LCD light path system of claim 3, wherein: the mask plate module is fixedly arranged, so that the first distance d is kept unchanged; the light source module is of an adjustable structure and is used for adjusting a first incident angle theta1And a second incident angle theta2And projecting the two groups of double-domain alignment light sources to different groups of alignment areas.
5. The dual domain photoalignment LCD light path system of claim 3, wherein: the first incident angle theta provided by the light source module1And a second incident angle theta2Keeping the same; the first distance d between the mask and the substrate to be aligned is adjustable, so that the two groups of double-domain alignment light sources are projected to different groups of alignment areas.
6. The dual domain photoalignment LCD light path system of claim 1, wherein: the two alignment regions of the display pixels are rectangles with equal size; the size of the alignment area is the same as that of the light-transmitting area.
7. The dual domain photoalignment LCD light path system of claim 1, wherein: a plurality of display pixels form a column of pixel groups; and one row of the pixel components are divided into a left alignment block group and a right alignment block group, and the left alignment block group, the right alignment block group and the light-transmitting zone are rectangles with equal width.
8. The dual domain photoalignment LCD light path system of claim 1, wherein: when the light source module is used for carrying out alignment on the substrate to be aligned, the light source module simultaneously generates two groups of double-domain alignment light sources with different incidence directions so as to carry out alignment on the substrate to be aligned.
9. The dual domain photoalignment LCD light path system of claim 1, wherein:
the light source module includes: an initial light source lamp, a half-reflecting and half-transmitting mirror and a reflecting mirror;
the initial light emitted by the initial light source lamp passes through the semi-reflecting semi-transmitting mirror and the reflecting mirror and is divided into two groups of double-domain light alignment light with different incidence directions to be used as double-domain alignment light sources.
10. The dual domain photoalignment LCD light path system of claim 1, wherein: the mask plate module is installed on the lifting mechanism, and the lifting mechanism is used for changing the distance between the mask plate and the substrate to be aligned.
CN202110107547.1A 2021-01-27 2021-01-27 Double-domain optical alignment LCD light path system Pending CN112904620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110107547.1A CN112904620A (en) 2021-01-27 2021-01-27 Double-domain optical alignment LCD light path system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110107547.1A CN112904620A (en) 2021-01-27 2021-01-27 Double-domain optical alignment LCD light path system

Publications (1)

Publication Number Publication Date
CN112904620A true CN112904620A (en) 2021-06-04

Family

ID=76120474

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110107547.1A Pending CN112904620A (en) 2021-01-27 2021-01-27 Double-domain optical alignment LCD light path system

Country Status (1)

Country Link
CN (1) CN112904620A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1329265A (en) * 2000-06-20 2002-01-02 国际商业机器公司 Multidomain for dry orientatino and inner switching liquid crystal display device
US20030059724A1 (en) * 1999-10-14 2003-03-27 Choi Young Seok Method for manufacturing multi-domain liquid crystal cell
CN102854756A (en) * 2012-08-06 2013-01-02 京东方科技集团股份有限公司 Method and device for exposure
CN103033988A (en) * 2011-09-30 2013-04-10 群康科技(深圳)有限公司 Optical alignment device of alignment film and manufacturing method of alignment film
CN203444212U (en) * 2013-08-21 2014-02-19 京东方科技集团股份有限公司 Light reflection device and optical alignment equipment
CN104412152A (en) * 2012-07-05 2015-03-11 株式会社V技术 Photo-alignment exposure method and photo-alignment exposure device
CN106918863A (en) * 2017-05-12 2017-07-04 京东方科技集团股份有限公司 Phase ilm substrate and its manufacture method and display device
CN107561786A (en) * 2017-07-31 2018-01-09 信利（惠州）智能显示有限公司 A kind of multidomain light alignment method and light path system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030059724A1 (en) * 1999-10-14 2003-03-27 Choi Young Seok Method for manufacturing multi-domain liquid crystal cell
CN1329265A (en) * 2000-06-20 2002-01-02 国际商业机器公司 Multidomain for dry orientatino and inner switching liquid crystal display device
CN103033988A (en) * 2011-09-30 2013-04-10 群康科技(深圳)有限公司 Optical alignment device of alignment film and manufacturing method of alignment film
CN104412152A (en) * 2012-07-05 2015-03-11 株式会社V技术 Photo-alignment exposure method and photo-alignment exposure device
CN102854756A (en) * 2012-08-06 2013-01-02 京东方科技集团股份有限公司 Method and device for exposure
CN203444212U (en) * 2013-08-21 2014-02-19 京东方科技集团股份有限公司 Light reflection device and optical alignment equipment
CN106918863A (en) * 2017-05-12 2017-07-04 京东方科技集团股份有限公司 Phase ilm substrate and its manufacture method and display device
CN107561786A (en) * 2017-07-31 2018-01-09 信利（惠州）智能显示有限公司 A kind of multidomain light alignment method and light path system

Similar Documents

Publication Publication Date Title
JP4666417B2 (en) Manufacturing method of liquid crystal display device and aligner exposure apparatus
JP5400176B2 (en) Exposure apparatus and method of manufacturing liquid crystal display device
WO2007086474A1 (en) Liquid crystal display device manufacturing method, and liquid crystal display device
WO2017139999A1 (en) Vertical photo-alignment method and method for manufacturing liquid crystal display panel
US10718978B2 (en) Apparatus for improving optical alignment of panels manufactured on a same mother substrate
WO2015104927A1 (en) Liquid crystal display
US20210063826A1 (en) Photoalignment Method and Photoalignment Device
JP4216220B2 (en) Manufacturing method of liquid crystal display element
CN110161731B (en) Mask equipment
US10203556B2 (en) Display substrate having pre-tilt angle for liquid crystal molecules
JP2008209710A (en) Method of manufacturing liquid crystal device
WO2017035909A1 (en) Photomask for optical alignment and optical alignment method
CN112904619A (en) LCD optical alignment method for double-domain alignment
CN109270743B (en) Mask plate for photo-alignment and mask set for photo-alignment
JP2008015228A (en) Liquid crystal device and electronic equipment
JP2012078697A (en) Alignment layer exposure method for liquid crystal, its device and liquid crystal panel produced by applying the method
US8436969B2 (en) Photo alignment process and liquid crystal display using the same
CN112904622B (en) Photo-alignment method of liquid crystal display three-domain alignment layer
CN112904620A (en) Double-domain optical alignment LCD light path system
CN112904621B (en) Light alignment light path system of liquid crystal display tri-domain alignment layer
JP2007187720A (en) Liquid crystal device and electronic equipment
CN108761883B (en) Curved surface display, manufacturing method thereof and alignment exposure device
WO2017152497A1 (en) Liquid crystal alignment method, and pixel structure, display panel, and display apparatus
JP2008015229A (en) Liquid crystal device and electronic equipment
KR20070029422A (en) Rubbing device of an alignment layer for liquid crystal display device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210604

RJ01 Rejection of invention patent application after publication