CN105372879A - LCD (liquid crystal display) panel and manufacture method of alignment films of LCD panel - Google Patents
LCD (liquid crystal display) panel and manufacture method of alignment films of LCD panel Download PDFInfo
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- CN105372879A CN105372879A CN201510992772.2A CN201510992772A CN105372879A CN 105372879 A CN105372879 A CN 105372879A CN 201510992772 A CN201510992772 A CN 201510992772A CN 105372879 A CN105372879 A CN 105372879A
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- substrate
- alignment
- liquid crystal
- alignment layers
- crystal panel
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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
- G02F1/1337—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
Abstract
The invention provides an LCD (liquid crystal display) panel and a manufacture method of alignment films of the LCD panel. The manufacture method of the alignment films comprises steps as follows: a first substrate (1) and a second substrate (2) are provided, a first alignment layer (12) is formed on the first substrate (1), and a second alignment layer (22) is formed on the second substrate; each of the first alignment layer (12) and the second alignment layer (22) is uniformly divided into at least one zone, and the zone comprises multiple alignment zones; each alignment zone of the first alignment layer (12) is irradiated by polarized light in different directions, each alignment zone of the second alignment layer (22) is irradiated by polarized light in different directions, and accordingly, the alignment films are formed on the first alignment layer (12) and the second alignment layer (22). The alignment directions of the alignment films in two opposite alignment zones on the first substrate and the second substrate are consistent, and accordingly, when the first substrate and the second substrate are buckled, a torsion technology is not required.
Description
Technical field
The invention belongs to the manufacture field of liquid crystal panel, specifically, relate to the method for making of a kind of liquid crystal panel and alignment film thereof.
Background technology
Thin Film Transistor-LCD (ThinFilmTransistor-LCD, TFT-LCD) obtains development at full speed in recent years and applies widely.Liquid crystal display major part on existing market is backlight liquid crystal display, and it comprises liquid crystal panel and backlight module (backlightmodule).Usual liquid crystal panel is by color membrane substrates (CF, ColorFilter), thin film transistor base plate (TFT, ThinFilmTransistor) liquid crystal (LC, LiquidCrystal) between color membrane substrates and thin film transistor base plate and sealing frame glue (Sealant) composition, is sandwiched in; Its principle of work is by applying the rotation that driving voltage controls liquid crystal molecule on two plate bases, the light refraction of backlight module out being produced picture.
With regard to the TFT-LCD display panel on current mainstream market, three types can be divided into, twisted-nematic (TwistedNematic respectively, TN) or supertwist to row (SuperTwistedNematic, STN) type, plane conversion (In-PlaneSwitching, IPS) type and vertical orientation (VerticalAlignment, VA) type.Wherein VA type liquid crystal display has high contrast relative to the liquid crystal display of other kinds, in large scale display, as the aspects such as TV have very wide application.And HVA2 pattern is an important branch in VA pattern.That the vertical electric field formed by the public electrode of the pixel electrode of array base palte side and color membrane substrates side is to control the rotation of liquid crystal molecule during the work of HVA2 type liquid crystal panel.
The HVA2 alignment technique that HVA2 type liquid crystal panel adopts refers to that irradiating polyimide (Polyimide, PI) alignment film by ultraviolet (UV) linearly polarized light induces PI high molecular polymer to form a kind of light alignment technique of tilt angle.But, in existing HVA2 alignment technique, need to add torsion (Twist) technology, and torsion needs the time, and poor on the surface that reply pressed by external force is recovered, have a strong impact on the quality of liquid crystal panel.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the object of the present invention is to provide a kind of method for making of alignment film of liquid crystal panel, it comprises: provide first substrate and second substrate, and described first substrate is formed the first both alignment layers, and described second substrate is formed the second both alignment layers; Described first both alignment layers and described second both alignment layers are all divided at least one subregion, and wherein, described subregion comprises multiple orientation district; The polarized light of different directions is adopted to irradiate respectively to each orientation district of described first both alignment layers, and adopt the polarized light of different directions to irradiate respectively to each orientation district of described second both alignment layers, thus form alignment film in described first both alignment layers and described second both alignment layers.
Further, described first both alignment layers adopts the polarized light of equidirectional to irradiate with the relative orientation district of described second both alignment layers.
Further, the direction of illumination of described polarized light is fixed value with the angle of described first both alignment layers and described second both alignment layers respectively.
Further, the direction of illumination of described polarized light is 40 ° with the angle of described first both alignment layers and described second both alignment layers respectively.
Further, described subregion is divided into four orientation districts by two mutually perpendicular separator bars.
Further, the angle of the projection of described polarized light in described subregion and described cut-off rule is 45 °.
Further, the first electrode layer of described first substrate forms the first both alignment layers, the second electrode lay of described second substrate is formed the second both alignment layers.
Further, described first substrate is array base palte, and described first electrode layer is pixel electrode layer; Described second substrate is color membrane substrates, and described the second electrode lay is common electrode layer.
Further, described polarized light is linearly polarized light.
Another object of the present invention is also to provide a kind of liquid crystal panel, and its alignment film is made by the method for making of the alignment film of above-mentioned liquid crystal panel.
Beneficial effect of the present invention: the present invention is by utilizing the Liang Ge orientation district of the ultraviolet polarizing light irradiation first substrate of equidirectional and relative on second substrate, make first substrate consistent with the alignment direction of the alignment film in the relative Liang Ge orientation district on second substrate, like this when first substrate and second substrate are to box, without the need to adding torsion technique.
Accompanying drawing explanation
The following description carried out in conjunction with the drawings, the above-mentioned and other side of embodiments of the invention, feature and advantage will become clearly, in accompanying drawing:
Fig. 1 is the process flow diagram of the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention;
Fig. 2 is the subregion schematic diagram of first substrate in the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention;
Fig. 3 is the forming process figure of alignment film on first substrate according to an embodiment of the invention;
Fig. 4 is the subregion schematic diagram of second substrate in the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention;
Fig. 5 is the forming process figure of alignment film on second substrate according to an embodiment of the invention;
Fig. 6 is LCD alignment result schematic diagram in the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention;
Fig. 7 is the structural representation of liquid crystal panel according to an embodiment of the invention.
Embodiment
Below, embodiments of the invention are described in detail with reference to the accompanying drawings.But, the present invention can be implemented in many different forms, and the present invention should not be interpreted as being limited to the specific embodiment of setting forth here.On the contrary, provide these embodiments to be to explain principle of the present invention and practical application thereof, thus enable others skilled in the art understand various embodiment of the present invention and be suitable for the various amendments of certain expected application.
In the accompanying drawings, for the sake of clarity, the thickness in layer and region is exaggerated.Identical label can be used to represent identical element in whole instructions with accompanying drawing.
Although will be appreciated that and term " first ", " second " etc. can be used here to describe various element, these elements should by the restriction of these terms.These terms are only for separating an element and another element region.
Fig. 1 is the process flow diagram of the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention.
With reference to Fig. 1, in step s 11, provide first substrate and second substrate, described first substrate is formed the first both alignment layers, described second substrate is formed the second both alignment layers.
Here, first substrate is thin film transistor (TFT) (TFT) array base palte, and second substrate is colored filter (CF) substrate.Particularly, the first electrode layer of first substrate forms the first both alignment layers, the second electrode lay of second substrate is formed the second both alignment layers.
In step s 12, described first both alignment layers and described second both alignment layers are all divided at least one subregion, wherein, described subregion comprises multiple orientation district.
In step s 13, the polarized light of different directions is adopted to irradiate respectively to each orientation district of described first both alignment layers, and adopt the polarized light of different directions to irradiate respectively to each orientation district of described second both alignment layers, thus form alignment film in described first both alignment layers and described second both alignment layers.
In step S14, to the first electrode layer on first substrate and the energising of the second electrode lay on second substrate, the liquid crystal molecule in liquid crystal cell is made to complete orientation.
Below in conjunction with specific embodiments, above-mentioned each step is further illustrated.
Fig. 2 is the subregion schematic diagram of first substrate in the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention.
With reference to Fig. 2, first both alignment layers of first substrate 1 is divided into multiple subregion 10, each subregion 10 comprises multiple orientation district 100 further, in fig. 2, each subregion 10 is divided into four orientation districts 100 (merely illustrate a subregion 10 in the drawings and be divided into four orientation districts, be only citing herein) by two mutually perpendicular separator bars (shown in dotted line).
Fig. 3 is the forming process figure of alignment film on first substrate according to an embodiment of the invention.In figure 3, illustrate only a subregion 10 of the first both alignment layers.Should be understood that, in other subregions 10, the forming process of alignment film is consistent with the forming process of alignment film in the subregion 10 shown in Fig. 3.
With reference to Fig. 3, the polarized light of different directions is utilized to irradiate each orientation district 100.In the present embodiment, preferably, polarized light is ultraviolet polarized light, but the present invention is not restricted to this.Wherein, the direction of arrow is the direction of illumination of linearly polarized light, and the black horizontal line on it represents the polarization direction of linearly polarized light.Article two, subregion 10 is divided into four quadrants by mutually perpendicular separator bar (shown in dotted line).
Along order from top to bottom, in the first width figure, the orientation district 100 be in the second quadrant, third quadrant and fourth quadrant is blocked (representing with striate region), the ultraviolet polarizing light irradiation being in first quartile is utilized to be in the orientation district 100 of first quartile, to form the alignment film with predetermined alignment direction in the orientation district 100 being in first quartile.Here, the direction of illumination being in the ultraviolet polarized light of first quartile is fixed value with the angle in the orientation district 100 being in first quartile, be preferably 40 °, but the present invention is not restricted to this.Further, preferably, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of first quartile in the orientation district 100 being in first quartile and separator bar is 45 °, but the present invention is not restricted to this, such as, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of first quartile in the orientation district 100 being in first quartile and separator bar is between 0 ° ~ 90 °.
In the second width figure, the orientation district 100 be in first quartile, third quadrant and fourth quadrant is blocked (representing with striate region), the ultraviolet polarizing light irradiation being in the second quadrant is utilized to be in the orientation district 100 of the second quadrant, to form the alignment film with predetermined alignment direction in the orientation district 100 being in the second quadrant.Here, the direction of illumination being in the ultraviolet polarized light of the second quadrant is fixed value with the angle in the orientation district 100 being in the second quadrant, be preferably 40 °, but the present invention is not restricted to this.Further, preferably, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of the second quadrant in the orientation district 100 being in the second quadrant and separator bar is 45 °, but the present invention is not restricted to this, such as, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of the second quadrant in the orientation district 100 being in the second quadrant and separator bar is between 0 ° ~ 90 °.
In the 3rd width figure, the orientation district 100 be in first quartile, the second quadrant and fourth quadrant is blocked (representing with striate region), the ultraviolet polarizing light irradiation being in third quadrant is utilized to be in the orientation district 100 of third quadrant, to form the alignment film with predetermined alignment direction in the orientation district 100 being in third quadrant.Here, the direction of illumination being in the ultraviolet polarized light of third quadrant is fixed value with the angle in the orientation district 100 being in third quadrant, be preferably 40 °, but the present invention is not restricted to this.Further, preferably, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of third quadrant in the orientation district 100 being in third quadrant and separator bar is 45 °, but the present invention is not restricted to this, such as, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of third quadrant in the orientation district 100 being in third quadrant and separator bar is between 0 ° ~ 90 °.
In the 4th width figure, the orientation district 100 be in first quartile, the second quadrant and third quadrant is blocked (representing with striate region), the ultraviolet polarizing light irradiation being in fourth quadrant is utilized to be in the orientation district 100 of fourth quadrant, to form the alignment film with predetermined alignment direction in the orientation district 100 being in fourth quadrant.Here, the direction of illumination being in the ultraviolet polarized light of fourth quadrant is fixed value with the angle in the orientation district 100 being in fourth quadrant, be preferably 40 °, but the present invention is not restricted to this.Further, preferably, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of fourth quadrant in the orientation district 100 being in fourth quadrant and separator bar is 45 °, but the present invention is not restricted to this, such as, the angle of the projection of the direction of illumination being in the ultraviolet polarized light of fourth quadrant in the orientation district 100 being in fourth quadrant and separator bar is between 0 ° ~ 90 °.
In the 5th width figure, represent the alignment direction of alignment film in each orientation district 100 with arrow.
It should be noted that, above when carrying out illumination to each orientation district 100 and penetrating, quadrant residing for ultraviolet polarized light is not limited with diagram and foregoing description.
Fig. 4 is the subregion schematic diagram of second substrate in the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention.
With reference to Fig. 4, second both alignment layers of second substrate 2 is divided into multiple subregion 20, each subregion 20 comprises multiple orientation district 200 further, in the diagram, each subregion 20 is divided into four orientation districts 200 (merely illustrate a subregion 20 in the drawings and be divided into four orientation districts 200, be only citing herein) by two mutually perpendicular separator bars (shown in dotted line).
Fig. 5 is the forming process figure of alignment film on second substrate according to an embodiment of the invention.In Figure 5, illustrate only a subregion 20 of the second both alignment layers.Should be understood that, in other subregions 20, the forming process of alignment film is consistent with the forming process of alignment film in the subregion 20 shown in Fig. 5.
With reference to Fig. 5, make the alignment film with predetermined alignment direction on second substrate 2 with the method identical with the forming process of the alignment film on the first substrate 1 shown in Fig. 3, concrete with reference to foregoing description, do not repeat them here.From the 5th width figure in the 5th width figure and Fig. 3 in Fig. 5, first substrate 1 is consistent with the alignment direction of the alignment film in the relative Liang Ge orientation district on second substrate 2.That is, the Liang Ge orientation district of the ultraviolet polarizing light irradiation first substrate 1 of equidirectional and relative on second substrate 2 is utilized.
Fig. 6 is LCD alignment result schematic diagram in the method for making of the alignment film of liquid crystal panel according to an embodiment of the invention.
With reference to Fig. 6, after first substrate 1 and second substrate 2 all form alignment film, by the first electrode on step 14 pair first substrate 1 and the second electrifying electrodes on second substrate 2, the liquid crystal molecule in liquid crystal cell is made to complete orientation.Because each orientation district 100 of the first both alignment layers is consistent with the alignment direction in the second corresponding both alignment layers Shang Ge orientation district 200, therefore under the effect of the first both alignment layers and the second both alignment layers, the liquid crystal molecule corresponding to each orientation district in liquid crystal cell can be made to produce swing to, complete orientation.Like this, because each orientation district 100 of the first both alignment layers is consistent with the alignment direction in the second corresponding both alignment layers Shang Ge orientation district 200, therefore when first substrate 1 and second substrate 2 pairs of boxes, without the need to adding torsion technique.
Fig. 7 is the structural representation of liquid crystal panel according to an embodiment of the invention.
With reference to Fig. 7, liquid crystal panel 4 adopts HVA2 pattern according to an embodiment of the invention, and it comprises: first substrate 1, second substrate 2 and liquid crystal layer 3.
First substrate 1 has the first electrode layer 11 and the first both alignment layers 12 covering the first electrode layer 11.
Second substrate 2 has the second electrode lay 21 and the second both alignment layers 22 covering the second electrode lay 21.
Liquid crystal layer 3 is configured between the first both alignment layers 12 of first substrate 1 and the second both alignment layers 22 of second substrate 2, and it comprises liquid crystal molecule (not shown).
Wherein, the first both alignment layers 12 and the second both alignment layers 22 are all divided at least one subregion, and each subregion is divided into multiple orientation district, herein can see the aforementioned description to Fig. 2 and Fig. 4.
Adopting the linearly polarized light of different directions to irradiate respectively to each orientation district of the first both alignment layers 12 and the second both alignment layers 22, thus forming the alignment film of the predetermined alignment direction had corresponding to each orientation district in the first both alignment layers 12 and the second both alignment layers 22.
And being energized to the first electrode layer 11 on first substrate 1 and the second electrode lay 21 on second substrate 2, make the liquid crystal molecule in liquid crystal layer complete orientation.
Wherein, each subregion is divided into four orientation districts by two mutually perpendicular separator bars.
Particularly, first substrate 1 is tft array substrate, and the first electrode layer 11 is pixel electrode layer; Second substrate 2 is CF substrate, and the second electrode lay 22 is common electrode layer.
In addition, this first substrate 1 comprises further: glass substrate 13 and the grid line be arranged on this glass substrate 13 and common electrode.Be coated with insulation course thereon, insulation course directly over grid line becomes and is provided with semiconductor layer further, be provided with the data line for the formation of drain electrode and source electrode on the semiconductor layer, then one deck passivation layer is provided with thereon, be formed with pixel electrode 11 over the passivation layer, the first both alignment layers 12 is arranged on pixel electrode 11.
And second substrate 2 specifically comprises: glass substrate 23, be arranged at the black matrix on glass substrate and color rete, and be covered in the common electrode layer 21 of color rete and black matrix; Wherein, the second both alignment layers 22 is arranged on common electrode layer 21.Arrange this black matrix can prevent from misplacing between first substrate 1 (tft array substrate) and second substrate 2 (CF substrate) causing pixel region aperture opening ratio to reduce.
In sum, according to embodiments of the invention, by utilizing the Liang Ge orientation district of the ultraviolet polarizing light irradiation first substrate of equidirectional and relative on second substrate, make first substrate consistent with the alignment direction of the alignment film in the relative Liang Ge orientation district on second substrate, like this when first substrate and second substrate are to box, without the need to adding torsion technique.
Although illustrate and describe the present invention with reference to specific embodiment, but it should be appreciated by those skilled in the art that: when not departing from the spirit and scope of the present invention by claim and equivalents thereof, the various changes in form and details can be carried out at this.
Claims (10)
1. a method for making for the alignment film of liquid crystal panel, is characterized in that, comprising:
First substrate (1) and second substrate (2) are provided, in upper formation first both alignment layers (12) of described first substrate (1), in upper formation second both alignment layers (22) of described second substrate (2);
Described first both alignment layers (12) and described second both alignment layers (22) are all divided at least one subregion, and wherein, described subregion comprises multiple orientation district;
The polarized light of different directions is adopted to irradiate respectively to each orientation district of described first both alignment layers (12), and adopt the polarized light of different directions to irradiate respectively to each orientation district of described second both alignment layers (22), thus form alignment film on described first both alignment layers (12) and described second both alignment layers (22).
2. the method for making of the alignment film of liquid crystal panel according to claim 1, is characterized in that, described first both alignment layers (12) adopts the polarized light of equidirectional to irradiate with the relative orientation district of described second both alignment layers (22).
3. the method for making of the alignment film of liquid crystal panel according to claim 1 and 2, it is characterized in that, the direction of illumination of described polarized light is fixed value with the angle of described first both alignment layers (12) and described second both alignment layers (22) respectively.
4. the method for making of the alignment film of liquid crystal panel according to claim 3, is characterized in that, the direction of illumination of described polarized light is 40 ° with the angle of described first both alignment layers (12) and described second both alignment layers (22) respectively.
5. the method for making of the alignment film of liquid crystal panel according to claim 3, is characterized in that, described subregion is divided into four orientation districts by two mutually perpendicular separator bars.
6. the method for making of the alignment film of liquid crystal panel according to claim 5, is characterized in that, the angle of the projection of described polarized light in described subregion and described cut-off rule is 45 °.
7. the method for making of the alignment film of liquid crystal panel according to claim 1, it is characterized in that, in upper formation first both alignment layers (12) of first electrode layer (11) of described first substrate (1), upper formation second both alignment layers (22) of the second electrode lay (21) in described second substrate (2).
8. the method for making of the alignment film of liquid crystal panel according to claim 7, is characterized in that, described first substrate (1) is array base palte, and described first electrode layer (11) is pixel electrode layer; Described second substrate (2) is color membrane substrates, and described the second electrode lay (21) is common electrode layer.
9. the method for making of the alignment film of liquid crystal panel according to claim 1, is characterized in that, described polarized light is linearly polarized light.
10. a liquid crystal panel, is characterized in that, the alignment film in described liquid crystal panel is made by the method for making of the alignment film of the liquid crystal panel described in any one of claim 1 to 9.
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| CN201510992772.2A CN105372879A (en) | 2015-12-25 | 2015-12-25 | LCD (liquid crystal display) panel and manufacture method of alignment films of LCD panel |
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| CN201510992772.2A CN105372879A (en) | 2015-12-25 | 2015-12-25 | LCD (liquid crystal display) panel and manufacture method of alignment films of LCD panel |
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| CN107102481A (en) * | 2017-06-02 | 2017-08-29 | 合肥市惠科精密模具有限公司 | A kind of TFT LCD method for manufacturing alignment film |
| CN108803125A (en) * | 2018-06-27 | 2018-11-13 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and preparation method thereof |
| CN110806660A (en) * | 2019-11-11 | 2020-02-18 | 昆山龙腾光电股份有限公司 | Photo-alignment film, method for manufacturing photo-alignment film, and alignment method |
| WO2020143845A1 (en) * | 2019-01-08 | 2020-07-16 | 成都中电熊猫显示科技有限公司 | Optical alignment method and optical alignment apparatus |
| CN113031349A (en) * | 2021-03-22 | 2021-06-25 | 惠科股份有限公司 | Photo-alignment device and photo-alignment method |
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| CN113031349B (en) * | 2021-03-22 | 2021-12-31 | 惠科股份有限公司 | Photo-alignment device and photo-alignment method |
| US11966123B2 (en) | 2021-03-22 | 2024-04-23 | HKC Corporation Limited | Device and method for photo alignment |
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Application publication date: 20160302 |