TW200906911A - Alignment solution, alignment film and liquid crystal display - Google Patents

Abstract

An alignment solution including a photo sensitive alignment material and at least one of a non-photo sensitive polyimide and a precursor thereof is provided. The photo sensitive alignment material has a structure of formula I represented below: An alignment film formed by the abovementioned alignment solution has good voltage holding rate (VHR) and good long time reliability. Meanwhile, the quality of a liquid crystal display having the alignment film can also be improved.

Description

200906911 23887twf.d〇c/p IX. OBJECTS OF THE INVENTION: TECHNICAL FIELD The present invention relates to an alignment liquid, an alignment film, and a display device, and more particularly to an alignment liquid containing a photosensitive alignment material. And a liquid crystal display (LCD). ° ^ [Prior Art] 〇 With the dramatic advancement of computer performance and the high development of the Internet and multimedia, the size of video devices has become increasingly thin. In the development of display technology, with the advancement of optoelectronic technology and semiconductor manufacturing technology, liquid crystal display devices with superior quality, good space utilization efficiency, low power consumption, and no light radiation have gradually become the mainstream of the market. Recently, the market demands for high performance of liquid crystal display devices (ffigh)

In the direction of rapid response and wide viewing angle, a variety of alignment methods for aligning liquid crystal molecules along a specific order are produced. The most common alignment method of Baizhi is to rub the alignment layer G a plurality of times in a contact manner, so that the alignment layer produces a multi-directional alignment effect on the liquid crystal layer. However, the contact type is easy to produce dust or static electricity in the alignment layer, and it is easy to cause uneven alignment. Another alignment method utilizes linearly polarized ultraviolet light to illuminate the photosensitive alignment material such that the alignment layer molecules have a specific alignment direction, that is, a photoalignment process to solve the problem of dust and static electricity which is easily generated by the conventional contact alignment method. However, the physical properties of the current photosensitive alignment materials are higher than 200906911 Γυ/υυουχ.Γζ.ι ι W 23887twf.d〇c/p. The parent example of the Γ Γ Γ 在 在 在 在 在 长时间 长时间 长时间 ' ' ' ' ' ' ' ' ' ' ' ' The material Wei runner is low. In addition, generally, the optical property (4) is not good, and it is not formed on the substrate, and is not easily applied to the process of the current liquid crystal display device. Therefore, all the various methods of alignment have been improved. [Summary of the Invention]

SUMMARY OF THE INVENTION The present invention provides an alignment liquid which is suitable for solving the problems of conventional liquid crystal display devices because it is poor in the affinity of conventional photosensitive alignment materials. The present invention further provides an alignment film which solves the problem that the conventional photo-alignment film has a poor voltage holding ratio and poor long-term reliability. The present invention further provides a liquid crystal display device in which the photoalignment film has a better quality, thereby improving the quality of the liquid crystal display device. The present invention provides an alignment liquid comprising a photosensitive alignment material and at least one of a non-photosensitive polyimide and its precursor. In the alignment liquid according to an embodiment of the present invention, the photosensitive alignment material has a structure as shown in Chemical Formula I, Chemical Formula I: C· 0 200906911 /UUSULF/, !1W 23887twf.doc/p is one of the present inventions In the alignment liquid of the embodiment, in the chemical formula I of the photosensitive alignment material, C is a photoreactive functional group, and one of (la), (lb) and (lc) in the following chemical formula II is selected. Chemical Formula II:

(la) (lb) (lc). In the alignment liquid of one embodiment of the present invention, in the chemical formula I of the photosensitive alignment material, C' is a side chain which can control the range of the pretilt angle of the alignment film, and is from (2a) in the following Chemical Formula III~ Choose one of (2k), Chemical Formula III:

〇 ten ch2-^-ch3 h2c——〇—^-ch2^-ch3 CnH2n+i 200906911 ____________W 23887twf.doc/p (2e) (2f) (2g)

(2k). In the alignment liquid according to an embodiment of the present invention, the content ratio of the photosensitive alignment material is 1.5%. In the alignment liquid according to an embodiment of the present invention, the ratio of the photosensitive photosensitive material/non-photosensitive polyimide and at least one of the precursors is between 1/5 and 1. In the alignment liquid according to an embodiment of the present invention, the content ratio of at least one of the non-photosensitive polyimide and the precursor thereof is from 3.3% to 3.8%. 200906911 P070080LPZ1TW 23887twf.doc/p In the alignment liquid of one embodiment of the present invention, in the chemical formula I of the above photosensitive alignment material, A is selected from (3a) and (3b) in the following chemical formula IV. , Chemical Formula IV:

(3a) (3b) Ο In the alignment liquid of one embodiment of the present invention, in the chemical formula I of the above photosensitive alignment material, B is (4a), (4b), (4c) in the following chemical formula V One of (4d) and (4e), chemical formula V: (4a) (4b)

(4c)

u (4d) is water. In the alignment liquid of one embodiment of the present invention, the above-mentioned photosensitive material is a vertical alignment type of the W-type, but not the photosensitive polyimide. Alternatively, the sag material is a vertical alignment type, rather than a photosensitive polysaimine rather than a directional type. Further, the above-mentioned photosensitive material may be of a vertical alignment type, and the material 1 of the light polyimide may be of a horizontal alignment type. Further, the above-mentioned photosensitivity, horizontal alignment type, and non-photosensitive polyimide are horizontal alignment type. The invention further provides an alignment film comprising a photosensitive alignment material 200906911 j. v /A 23887twf.doc/p and a non-photosensitive polyimine. The photosensitive alignment material has a structure as shown in the chemical formula (I), and the chemical formula I:

In the alignment film of one embodiment of the present invention, in the chemical formula I of the above photosensitive alignment material, C is selected from (la), (lb) and (lc) of the following chemical formula II, and the chemical formula II :

In the chemical formula I of the above-mentioned photosensitive alignment material in the alignment film of one embodiment of the present invention, C' is a side chain which can control the range of the pretilt angle of the alignment film, and is (2a) from the following chemical formula 〜 Choose one of (2k), Chemical Formula III:

10 200906911 P070080LPZ1TW 23887twf.doc/p

(2c) (2d)

〇 ten ch2^-ch3 h2c——o ten ch2^-ch3 CnH2n+i (2e) (2f) (2g)

(2J) 11 200906911 ru/uueuLrz,! 1 \V 23887twf.doc/p

Coo-( cm )-〇 ' J x (2k). In the alignment film according to an embodiment of the present invention, the mixing ratio of the photosensitive alignment material to the non-photosensitive polyimide is 1:2. In the alignment film of one embodiment of the present invention, in the chemical formula I of the above photosensitive alignment material, A is selected from (3a) and (3b) of the following Chemical Formula IV, Chemical Formula IV:

(3a) (3b). In the alignment film of one embodiment of the present invention, in the chemical formula I of the photosensitive alignment material, B is (4a), (4b) from the following chemical formula V,

Select the chemical formula V from L (4c), (4d) and (4e):

H ^CH2 (4a) (4b) (4c) (4d) cy^\J (4e) ° In the alignment film of one embodiment of the present invention, the above-mentioned photosensitive material 12 200906911 FU /UUSUL^Z, ! \V 23887twf.doc/p is a horizontal alignment type, and the non-photosensitive polyimide is a vertical alignment type. Or, the photosensitive material described is a vertical alignment type, and the surface polyimide is a vertical alignment type. Furthermore, the above-mentioned photosensitive material may be of a vertical alignment type, and the non-photosensitive polyimide may be of a horizontal alignment type. Further, the above-mentioned light-reducing material is of a horizontal alignment type, and the reduced-filament Weiya material is inclined (four) type. The present invention further provides a liquid crystal display device including a first substrate, a first substrate, and a liquid crystal layer. The liquid crystal layer is disposed on the first substrate 盥 n ^ first, and the material having the light alignment on the surface facing the liquid crystal layer comprises a photosensitive alignment material and a non-sensitive polyimide. The photosensitive alignment material has a structure as shown in the chemical formula (I), and the chemical formula I:

In the gas I, c is a photoreactive functional group, and one of (la), (lb) and (lc) is selected from the following chemical formula:

(lb) (lc). In Formula I, c, is a side system which can control the range of the pretilt angle of the alignment film, and is selected from (2a) to (2k) in the following Chemical Formula III, 13 200906911 fu/uusujl^ix W 23887twf.doc/p Chemical Formula III:

o

—o 12

(2h) 14 200906911 P070080LPZ1TW 23887twf.doc/p

(2k). In the liquid crystal display device of one embodiment of the invention, the mixing ratio of the photosensitive alignment material and the non-photosensitive polyimide is 1:2. In the liquid crystal display device of one embodiment of the present invention, in the chemical formula I of the photosensitive alignment material, A is selected from (3a) and (3b) of the following chemical formula IV, and the chemical formula IV is as follows:

(3a) (3b). In the liquid crystal display device of one embodiment of the present invention, in the chemical formula I of the photosensitive alignment material, B is from (4a), (4b), (4c), (4d) and (of the following chemical formula V). Select one of 4e), Chemical Formula V: 15 200906911 ru /uu»ULf Λ11 w 23887twf.doc/p (4a) (4b) (4C)

In the embodiment of the invention, the photosensitive material is a horizontal alignment type, and the non-photosensitive polyimide is a vertical alignment type. Alternatively, the photosensitive material described above is a vertical alignment type, and the non-photosensitive polyimide is a vertical alignment type. Further, the above-mentioned photosensitive material may be of a vertical alignment type, and the non-photosensitive polyimide may be a horizontal alignment type. Further, the above-mentioned photosensitive material is of a horizontal alignment type, and the non-photosensitive polyimide is a horizontal alignment type. In a liquid crystal display device according to an embodiment of the present invention, a backlight module is further included, and the @th substrate, the second substrate, and the liquid crystal layer are disposed on the backlight module. In the present invention, by adding a non-photosensitive polyimide or a precursor thereof having a relatively stable property to a photosensitive alignment material to form a force alignment liquid, the photosensitive alignment material has a poor voltage maintenance ratio and long-term reliability. Poor conditions can be improved. Further, the quality of the liquid crystal display device having the photoalignment film of the present invention can be improved as a result. At the same time, the photo-alignment liquid of the present invention is compatible with the process of the current liquid crystal display device. The above and other objects, features and advantages of the present invention will become more apparent in the light of the <RTI ID=0.0></RTI> described as follows. ['β] [Embodiment] At present, a photo-alignment film is produced by a photo-alignment process, for example, a three-dimensional alignment material is applied onto a substrate, and an exposure process such as a two- or two alignment film is performed. However, it is limited that the photosensitive alignment material itself is not easily compatible with the properties of the liquid crystal display device. Therefore: The present invention proposes that an alignment liquid can be used for the production of an alignment film and can be modified to have a defect. The alignment liquid of one embodiment of the present invention comprises a photosensitive alignment material and at least one of a non-photosensitive polyimide and a precursor thereof. Wherein, the photosensitive alignment material/non-photosensitive polyimine and its precursor have at least a ratio of 1/5 to 1, for example, when the content ratio of the photosensitive alignment material is 1.5%, non-photosensitive The content ratio of at least one of the polyimine and its precursor is about 1 to 5 times that of the photosensitive alignment material. ! # When the non-photosensitive polyimine or its precursor is contained in the alignment liquid, the proportion of the non-salt polyimine or its precursor may be 3·3/〇=·8%. Further, when the alignment liquid contains both non-photosensitive polyimine and its precursor, the ratio of the non-photosensitive polyimine and its precursor together may be 3.3% to 3.8%. Since the non-photosensitive polyimide and its precursor are suitable for use in the process of a conventional liquid crystal display device, in particular, the aforementioned printing method. Therefore, the mixing of the photosensitive alignment material with the non-photosensitive polyimine or its precursor (poly-proline) can apply the alignment liquid to the process of coating the substrate on the substrate 2009 200906911 FU /UUSULJ-Ai iw 23887twf.doc/p Yield improvement, process compatibility. Ώ 即 与 既 既 既 既 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上 实际上

c wherein C is a chemical group I, 1 , ττ, 疋/, a photosensitive branch, which can be selected from the following work a, (lb) and (lc), formula II:

OR

(U\ (lb) (1C). In the chemical formula I, 'c, is an o-side chain that can control the range of the pretilt angle of the alignment film, select one of (2a) to (2k) in the following chemical formula III. , chemical formula:

18 200906911 P070080LPZ1TW 23887twf.doc/p

ch2A—ch3 h2c O-f-CHz^j—CH3 CnH2n+l I n \ I n (2e) (2f) (2g)

(2k). 19 200906911 23887twf.doc/p 〇 Among them, the range of pretilt angle is determined according to the length or content of c, 'for example, when C' is a side chain of 12 carbons, it can provide a pretilt angle of 6.2 degrees, and C When it is a side chain of 18 carbons, it can provide a pretilt angle of η 3 degrees. According to this design principle, it can form the alignment of vertical alignment (which can provide larger pretilt angle) or horizontal alignment (which can provide smaller pretilt angle). liquid. Adjusting the content of c, can also change the range of pretilt angle. If the C' content is 〇~5%, the pretilt angle is close to 0 degree, that is, the alignment liquid of the horizontal alignment is 'when it is 5% or more, the pretilt angle is close to 90 degrees, that is, an alignment liquid that can form a vertical alignment. Further, 'in the chemical formula I' is selected, for example, from (3a) and (3b) in the following chemical formula iv, the chemical formula iv:

(3a) (3b). B can be selected from (4a), (4b), (4c), (4d) and (4e) in the following chemical formula v, chemical formula v: (4a) (4b)

(4d) (4c)

It is worth mentioning that the non-photosensitive polyimine and its precursors have a chemical structure as shown in Chemical Formula VI, which can be divided into 20 according to the length or proportion of the side chain.

200906911 W/UUSUL^ZHW 23887twf.doc/p The vertical alignment and horizontal distribution of the pure wire are similar to the chemical structure of the material. , A nine sex formula Chemical formula VI:

Therefore 'photosensitive 〇. The n-alignment material can be used to dissolve the non-photosensitive polyfluorene, or the amine or its precursor in a similar solvent, so that the process of the alignment liquid is more simplified, in other words, the alignment liquid does not need to be additionally The above materials can be uniformly mixed with a special solvent. In detail, if the sensory material is of a horizontal alignment type, the non-photosensitive poly-light amine may be a vertical alignment type, or the mysterious poly-imine may also be a horizontal alignment type. The sensation material is a turtle alignment, the non-photosensitive acrylonitrile is, for example, a vertical alignment type, or the non-photosensitive styrene can be a horizontal alignment type. The alignment film formed by the above alignment liquid is subjected to a photo-alignment process, and the material thereof includes various vertical alignment type or horizontal alignment type photosensitive material and vertical alignment type or horizontal alignment type non-photosensitive polyimide. At the same time, the mixing ratio of the photosensitive alignment material and the non-photosensitive polyimide was 1.2. When the photosensitive alignment material is made into a photo-alignment film, there is a problem that the voltage maintenance rate is not good, and as the use time increases, the photosensitive alignment material may gradually deteriorate and the alignment ability may be lowered. In contrast, non-photosensitive polyimides have stable properties, good voltage maintenance, and are not easily deteriorated under long-term use, thus making up for the shortcomings of photosensitive alignment materials. It is worth noting that when using horizontal alignment type photosensitive alignment material with vertical alignment 21 200906911 IV / W UV/AjJ. 1 a »/ 23887twf.doc/p type non-photosensitive polyimine, due to the average effect, it is more A friction process is required to form a lower pretilt angle, such as 80. ~89. . Therefore, the alignment film of the present invention has the advantages of no static electricity and low pollution of the conventional photo-alignment film, and can also improve the disadvantages of the conventional photo-alignment film. Hereinafter, this alignment film is applied to a liquid crystal display device. Figure 2 is a schematic view of a liquid crystal display device according to an embodiment of the present invention. Referring to FIG. 1, the liquid crystal display device 100 includes a first substrate 110, a second substrate 120, and a liquid crystal layer 130. The liquid crystal layer 130 is disposed between the first substrate 11 and the second substrate ff 120. The surface of the first substrate 11 facing the liquid crystal layer 13 has an alignment film 112. The material of the alignment film 112 includes a photosensitive alignment material and Non-photosensitive polysimine. In short, the alignment film 112 is one of the various alignment films of the above embodiments. Specifically, one of the first substrate 110 and the second substrate 〇2 is, for example, an active device array substrate, and the other is a color filter substrate. In another embodiment, the first substrate 110 and the second substrate 12 may be an active device array substrate having a color filter layer. The Q alignment film 112 contains non-photosensitive polyimide, and is less likely to deteriorate under long-term use, and the voltage maintenance ratio is better than that of the conventional photosensitive alignment material. Therefore, the alignment film 112 has good quality and contributes to improvement of liquid crystal. The quality of the display device 100. It is to be noted that the present invention is not limited to the configuration of only one alignment film 112 on the first substrate 110. In other embodiments, the alignment film 112 may be disposed on the second substrate 120. In addition, when the liquid crystal display device 100 adopts a transmissive or transflective design, a backlight module 140 may be further included to provide a display light source, wherein the first substrate 11 第, 22 200906911 ------ ------V 23887twf.doc/p The two substrates 120 and the liquid crystal layer 130 are disposed on the backlight module mo. In summary, the present invention utilizes a non-photosensitive polyimine and a precursor thereof to be mixed with a photosensitive alignment material to form an alignment liquid, to produce an alignment film and to be used in a liquid crystal display device, and the advantages and disadvantages of the two alignment materials. Complementary'. Therefore, the alignment liquid of the present invention can be compatible with the process of the original liquid crystal display device. Further, the voltage conversion property and long-term property of the alignment film of the present invention can be effectively improved to further improve the quality of the liquid crystal display device; 1. The disclosure is as disclosed above in the preferred embodiment. However, it is not intended to be used for the general knowledge of the genius. In the spirit and scope, when a little change and refinement can be made, g the scope of protection of the invention is regarded as BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a liquid crystal display device according to an embodiment of the present invention. [Main element symbol description] 100 liquid crystal display device 110 first substrate 112 alignment film 120 second substrate 130 liquid crystal layer 140 backlight module 23

Claims (1)

200906911 TO /UUiiUL^il W 23887twf.doc/p Patent Application Range: l. An alignment liquid comprising: a photosensitive alignment material having the structural chemical formula I as shown in Chemical Formula I: 0 0 -NA N- -B - C 〇Ο Ο and at least one of a non-photosensitive polyimine and its precursor. 2. The alignment liquid according to claim 1, wherein in the chemical formula I of the photosensitive alignment material, C is a photoreactive functional group. 3. The alignment liquid according to claim 2, wherein in the chemical formula I of the photosensitive alignment material, C is selected from (la), (lb) and (lc) of the following chemical formula II , Chemical Formula II : L (lb) (lc) 4. The alignment liquid according to claim 1, wherein in the chemical formula I of the photosensitive alignment material, C' is selected from (2a) to (2k) in the following Chemical Formula III. , Chemical Formula III : 24 200906911 F07U08ULFZ11 W 23887twf.doc/p 25 200906911 V 23887twf.doc/p (2k). 5. The alignment liquid according to claim 1, wherein the photosensitive alignment material/the ratio of the non-photosensitive polyimine to at least one of the precursors is between 1/5 and 1. 6. The alignment liquid according to claim 1, wherein the photosensitive alignment material occupies 1.5%. 7. The alignment liquid according to claim 1, wherein a ratio of the non-photosensitive polyimide and at least one of the precursors thereof is from 3.3% to 3.80 per gram. 8. In the chemical formula I of the photosensitive alignment material of the first aspect of the invention, the hydrazine is selected from the following formulas (3a) and (3b) of the chemical formula IV, the chemical formula IV In the chemical formula I of the photosensitive alignment material, B is from (4a) of the following chemical formula V, Select one of (4b), (4c), (4d) and (4e), 26 200906911 P07008ULFZ11W 23887^.ά〇0/ρ Chemical Formula V: Order 〇&lt;y^&lt;y (4a) (4b) (4c) 10. The alignment liquid of claim i, wherein the photosensitive material is of a horizontal alignment type and the non-photosensitive polyimide is a vertical alignment type. The alignment solution according to claim 1, wherein the photosensitive material is a vertical alignment type, and the non-photosensitive polyimide is a vertical alignment type. The alignment solution according to claim 1, wherein the photosensitive material is a vertical alignment type, and the non-photosensitive polyimide is a horizontal alignment type. 3. The aligning liquid according to claim 1, wherein the non-photosensitive polyimine is a horizontally-aligned film, and the material thereof comprises: Photosensitive alignment material 'which has a crucible as shown in the chemical formula (I), Chemical Formula I: 27 200906911 V 23887twf.doc/p And a non-photosensitive polyimine. 15. The alignment film according to claim 14, wherein in the chemical formula I of the photosensitive alignment material, C is selected from (la), (lb) and (lc) of the following chemical formula II. , Chemical Formula II: 16. The alignment film according to claim 14, wherein in the chemical formula I of the photosensitive alignment material, C' is one selected from (2a) to (2k) in the following Chemical Formula III, Chemical Formula III: 28 200906911 r w / i x \/ 23887twf.doc/p (2c) ch3 CnH2n+l /CH3,ch3 -〇 ten ch2-^ch3 h2c——o ten ch2-^*ch3 (2e) (2f) (2g) Och3 (2h) (2k). The method of claim 14, wherein the mixing ratio of the optical alignment material and the non-photosensitive polyimine is 丨.f. The aligning film according to claim 14, wherein in the chemical formula I of the optical aligning material, A is selected from the following chemical formulas Iv (3a) and (3b), and the chemical formula IV : 〇 (3 a) (3b). 19. The alignment film according to claim [51], wherein in the chemical formula of the residual photo-alignment material, B is from the following chemical formulas v (4a), (4b), (4c), (4d) and Select one of (4e), chemical formula V: (4a) (4b) (4c) 2. The alignment film according to claim 14, wherein the material is a horizontal alignment type, and the photosensitive t-imine is a vertical alignment type. 21 The alignment film has a sense of 30 200906911 - ' -V 23887twf.doc / p , the raw material is a vertical alignment type, and the non-photosensitive polyimine is a vertical alignment type. The alignment film according to claim 14, wherein the sensing material is a vertical alignment type, and the non-photosensitive polyimine is a horizontal alignment. The aligning film of claim 14, wherein the sensible material is a horizontal alignment type, and the _photo-sensitive imine is a horizontally-distributed liquid crystal display device, comprising: a first a substrate; a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first substrate facing the liquid crystal layer has an alignment film, and the material of the alignment film comprises: A photosensitive alignment material having a structure represented by the chemical formula (1), the chemical formula I: C 0 〇 ; and a non-photosensitive polyimine. 25. The liquid crystal display device according to claim 24, wherein in the chemical formula I of the photosensitive alignment material in 31 200906911 ___________. 1 23887 twf.doc/p, c is from (la) of the following chemical formula II , (lb) and (lc) choose one of them, Chemical Formula II: (lb) (lc). 26. The liquid crystal display device according to claim 24, wherein in the chemical formula I of the photosensitive alignment material, C' is selected from (2a) to (2k) in the following chemical formula III, III : (2a) 32 200906911 η 丨^^一...u N 23887twf.doc/p ch2-^-ch3 h2c 〇 ten ch2^-ch3 CnH2n+l (2e) (2f) (2g) (2k). 27. The liquid crystal display device of claim 24, wherein the photosensitive alignment material and the non-photosensitive polyimine are mixed at a ratio of 1:2. 28. The liquid crystal display device according to claim 24, wherein in the chemical formula I of the photosensitive alignment material, A is selected from (3a) and (3b) in the following chemical formula IV, and the chemical formula IV : 33 200906911 ________* ...* Y 23887twf.doc/p (3a) (3b). 29. The liquid crystal display device according to claim 24, wherein the chemical formula (4) of the photosensitive miscellaneous (4) is from (4a), (4b) ' (4c), (4d) of the following chemical formula V ) and (4e) select j: one, chemical formula V: 〇乂XV heart - (4a) (4c) (4b) The liquid crystal display device of claim 24, further comprising a light module, wherein the first substrate, the second substrate and the liquid crystal layer are disposed on the backlight module. The liquid crystal display device according to claim 24, wherein the photosensitive material is of a horizontal alignment type and the non-photosensitive poly(醯) vertical alignment type. The liquid crystal display device according to claim 24, wherein the photosensitive material is of a vertical alignment type, and the non-photosensitive type is vertically aligned. The amine is 33. The liquid crystal display device as described in claim 24 of the patent application '34 200906911 ▲---------* * V 23887twf.doc/p material is vertical alignment type' and the non-photosensitive The polyacrylonitrile is 34. The liquid crystal display according to claim 24 is a horizontal alignment type, and the non-photosensitive polyimide is 35. An alignment liquid comprising: a photosensitive property An aligning material; and at least one of the non-photosensitive melamine and its precursor. The alignment liquid according to claim 35, wherein the photosensitive alignment material/the ratio of the non-photosensitive polyimide and at least one of the precursors is between 1/5 and i. /, 37. The aligning liquid according to claim 35, wherein the photosensitive aligning material occupies 15%. 38. The alignment solution according to claim 35, wherein the ratio of the non-photosensitive polyimine and at least one of the precursors is from 3.3% to 3.8%. 39. The alignment liquid of claim 35, wherein the photosensitive alignment material has a structure as shown in Chemical Formula I, Formula I: 40. The alignment liquid of claim 39, wherein in the chemical formula I of the photosensitive alignment material, C is a calender reactive functional group. The aligning liquid according to claim 39, wherein in the chemical formula I of the photosensitive alignment material, C is (la), (lb) and (lc) from the following chemical formula π Choose one of them, Chemical Formula II: 42. The alignment liquid according to claim 39, wherein in the chemical formula I of the photosensitive alignment material, C' is selected from (2a) to (2k) in the following chemical formula III, and the chemical formula III : (2〇) (2d) 36 200906911 i \jt wyuvyj-Ά ί λ. 2〇887twf.doc/p 〇10ch2-^-ch3 h2c——〇—^-ch2^-ch3 CnH2n+i (2e) ( 2f) (2g) (2J) coo- CH2 •COO* (2k). 43. The alignment liquid according to claim 39, wherein in the chemical formula I of the photosensitive alignment material, A is selected from (3a) and (3b) in the following chemical formula IV, and the chemical formula IV: 37 200906911 23887twf.doc/p (3a) (3b)-, and 甘甘士44. In the chemical formula I assigned to the photosensitive alignment material according to claim 39, B is from the following formula (4a) , (4b), (4c), (4d), and (4e) select -, chemical formula V: Ο (4a) (4b) (4c) The alignment solution according to claim 35, wherein the photosensitive material is of a horizontal alignment type, and the non-photosensitive polyimide is a vertical alignment type. The alignment liquid according to claim 35, wherein the photosensitive material is a vertical alignment type, and the non-photosensitive polyimide is a vertical alignment type. 47. The alignment liquid according to claim 35, wherein the photosensitive material is a vertical alignment type, and the non-photosensitive polyimide is a horizontal alignment type. 48. The alignment solution according to claim 35, wherein the photosensitive material is of a horizontal alignment type, and the non-photosensitive polyimide is a horizontal alignment type. 38