CN1949062B - Liquid crystal display panel and manufacturing method thereof - Google Patents
Liquid crystal display panel and manufacturing method thereof Download PDFInfo
- Publication number
- CN1949062B CN1949062B CN200510113470XA CN200510113470A CN1949062B CN 1949062 B CN1949062 B CN 1949062B CN 200510113470X A CN200510113470X A CN 200510113470XA CN 200510113470 A CN200510113470 A CN 200510113470A CN 1949062 B CN1949062 B CN 1949062B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- layer
- substrate
- crystal display
- protrusions
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Substances (AREA)
Abstract
The invention provides a liquid crystal display panel, which comprises a substrate, an opposite substrate, a liquid crystal stabilizing layer and a liquid crystal layer. The liquid crystal stabilizing layer is disposed on the substrate, wherein the surface of the liquid crystal stabilizing layer has a plurality of protrusions, the height of the protrusions is, for example, between 10 nm and 200 nm, and the maximum width of the protrusions is about between 150 nm and 600 nm. In addition, the liquid crystal layer is sealed between the substrate and the opposite substrate. In addition, the invention also provides a manufacturing method for manufacturing the liquid crystal display panel.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a display panel and a method for manufacturing the same, and more particularly, to a liquid crystal display panel and a method for manufacturing the same.
[ Prior Art ]
With the great progress of computer performance and the high development of internet and multimedia technology, most of the current image information transmission is converted from analog to digital transmission. In addition, in order to match with modern life models, the volume of video or image devices is gradually becoming thinner and lighter. Although the conventional cathode ray display (CRT) has its advantages, it is bulky and takes up space due to the structure of the internal electron cavity, and it has problems that eyes are damaged by radiation when displaying. Therefore, flat Display panels (flat Display panels) developed by combining the electro-optical technology and the semiconductor manufacturing technology, such as liquid crystal displays (liquid crystal displays), Organic light-emitting displays (Organic light-emitting displays), Plasma Displays (PDPs), etc., have become the mainstream of Display products.
Fig. 1 is a schematic cross-sectional view of a conventional lcd panel. Referring to fig. 1, in the liquid crystal display, a conventional liquid crystal display panel 100 mainly includes an opposite substrate 110, a substrate 120, an alignment layer 130, an alignment layer 140 and a liquid crystal layer 150. In addition, the alignment layer 130 is disposed on the opposite substrate 110, and the alignment layer 140 is disposed on the substrate 120, wherein the alignment layers 130 and 140 are made of polyamide (polyimide). In addition, the liquid crystal layer 150 is sealed between the opposite substrate 110 and the substrate 120.
When a potential energy is formed between the opposite substrate 110 and the substrate 120, the liquid crystal molecules of the liquid crystal layer 150 are deflected by the intensity of the potential energy, so that the liquid crystal display panel 100 has a light transmittance corresponding to the voltage. In this way, the lcd panel 100 can display different gray-scale images according to the magnitude of the potential energy between the opposite substrate 110 and the substrate 120.
It is noted that the alignment layers 130 and 140 mainly serve to provide a stable boundary condition for the liquid crystal molecules of the liquid crystal layer 150, so that the liquid crystal molecules are aligned along a specific sequence direction. However, because the conventional alignment layers 130 and 140 have material and structure limitations, the conventional alignment layers 130 and 140 cannot effectively stabilize the liquid crystal molecules at the boundary of the liquid crystal layer 150.
When a potential is applied between the substrate 120 and the opposite substrate 110, such a phenomenon tends to slow the reaction speed of the liquid crystal molecules. In this way, when the liquid crystal display panel 100 displays a continuous screen, the screen is likely to be discontinuous or the display effect is likely to be not smooth. In addition, in addition to the problem of the reaction speed, the liquid crystal molecules are also prone to have a wrong deflection direction due to the influence of the potential energy because the boundary condition is unstable, and thus the picture quality of the liquid crystal display panel 100 is reduced. In response to this problem, U.S. Pat. No. 6,043,860 proposes a method for reducing the settling time of liquid crystal molecules. The method is mainly to add monomer (monomer) to the liquid crystal layer 150 to stabilize the liquid crystal molecules at the boundary of the liquid crystal layer 150 and to accelerate the reaction speed of the liquid crystal molecules.
In addition to the problem of slow reaction rate of the liquid crystal molecules, the prior art also faces a technical bottleneck in increasing the viewing angle range of the liquid crystal display panel 100. For example, the alignment layers 130 and 140 usually undergo multiple rubbing (rubbing) processes to generate a multi-directional alignment effect for the liquid crystal molecules of the liquid crystal layer 150. However, such a method has a limited alignment effect, a complicated manufacturing process, and a low yield.
In addition to rubbing the liquid crystal molecules of the liquid crystal layer 150 for many times to generate a multi-directional alignment effect, the prior art can also directly change the material of the alignment layers 130 and 140 into a light alignment material. However, not only needs to consider the stability of the photo-alignment material, but also the exposure equipment required for the manufacturing process is very expensive and complicated.
Furthermore, in the prior art, the liquid crystal molecules of the liquid crystal layer 150 can generate a multi-directional alignment effect by forming protrusions (protrusions) on the alignment layers 130 and 140, forming patterned slits (slits) on the pixel electrodes (not shown) of the substrate 120, or using the above-mentioned protrusion and slit designs. However, this requires additional mask manufacturing processes, which results in increased manufacturing cost and reduced yield.
[ summary of the invention ]
Accordingly, the present invention is directed to a liquid crystal display panel and a liquid crystal display device having more stable and better liquid crystal alignment effect.
Another objective of the present invention is to provide a method for manufacturing a liquid crystal display panel, which is used to provide a stable and better alignment effect for liquid crystal molecules in a liquid crystal layer.
The invention provides a method for manufacturing a liquid crystal display panel, which comprises the steps of firstly providing 1 a substrate and then forming a liquid crystal stabilizing material layer on the substrate. Then, a light is irradiated on the liquid crystal stabilizing material layer to make the liquid crystal stabilizing material layer become a liquid crystal stabilizing layer, wherein the surface layer of the liquid crystal stabilizing layer is provided with a plurality of protrusions, and the geometric shapes (profiles) of the protrusions correspond to the irradiation intensity of the light. Then, an opposite substrate is provided, and a liquid crystal layer is sealed between the substrate and the opposite substrate.
The present invention further provides another method for manufacturing a liquid crystal display panel, which comprises the steps of providing a substrate, and forming a liquid crystal stabilizing material layer on the substrate. Then, an opposite substrate is provided, and an alignment layer is formed on the opposite substrate. Then, a liquid crystal layer is sealed between the substrate and the opposite substrate. And irradiating a light to the liquid crystal stabilizing material layer to make the liquid crystal stabilizing material layer become a liquid crystal stabilizing layer, wherein the surface layer of the liquid crystal stabilizing layer is provided with a plurality of protrusions, and the geometric shapes of the protrusions correspond to the irradiation intensity of the light.
In the above method for manufacturing a liquid crystal display panel, after forming a liquid crystal stabilizing material layer on a substrate and before irradiating light to the liquid crystal stabilizing material layer, for example, the method further includes drying the liquid crystal stabilizing material layer. In addition, after forming the liquid crystal stabilizing material layer and before irradiating the liquid crystal stabilizing material layer with light, for example, a stamper is further provided, wherein a surface layer of the stamper has a protrusion pattern, and the protrusion pattern is transferred to the liquid crystal stabilizing material layer.
In the above method of manufacturing a liquid crystal display panel, for example, the method further includes forming a liquid crystal stabilizing material layer on the opposite substrate.
In the above-mentioned method for manufacturing the liquid crystal display panel, the liquid crystal stabilizing material layer is formed by coating the liquid crystal stabilizing material on the substrate by using a doctor blade or a transfer roller, for example.
In addition, the present invention provides another method for manufacturing a liquid crystal display panel, which comprises the steps of providing a substrate and an opposite substrate. Then, a liquid crystal mixture is provided, which comprises a liquid crystal material and a liquid crystal stabilizing material. Then, sealing the liquid crystal mixture between the substrate and the opposite substrate, and irradiating the liquid crystal mixture with a light beam to form a liquid crystal stabilizing layer at the boundary between the liquid crystal mixture and the substrate and at the boundary between the liquid crystal mixture and the opposite substrate, wherein the surface layer of the liquid crystal stabilizing layer has a plurality of protrusions, and the geometric shape of the protrusions corresponds to the irradiation intensity of the light beam.
In the above-mentioned method for manufacturing a liquid crystal display panel, before forming the liquid crystal stabilizing layer, for example, an alignment layer may be formed on the substrate or the opposite substrate, respectively.
In the above-mentioned method for manufacturing a liquid crystal display panel, the height of the protrusion is, for example, between 10 nm and 200 nm. In addition, the maximum width of the protrusion is, for example, between 150 nm and 600 nm.
In the above-mentioned method for manufacturing a liquid crystal display panel, the light used is, for example, ultraviolet light.
In the above-mentioned method for manufacturing a liquid crystal display panel, the material of the liquid crystal stabilizing material layer is, for example, as shown in formula (1).
Formula (1):
wherein,
B. b' comprises aromatic or saturated cycloalkane (saturated ring core);
x, Y includes terminal groups (terminal groups) or reactive groups (reactive groups);
r, R ', R' is a cross-linking (linkage) between ring systems (ring systems); and
z, Z' is a side chain substituent (molecular mutation).
In the above-mentioned method for manufacturing a liquid crystal display panel, the reactive group may be acrylic, epoxy, or other reactive group, and the cross-linking between the ring systems may be alkyl structure.
In the above method for manufacturing a liquid crystal display panel, the liquid crystal stabilizing material layer is made of, for example:
or
The present invention further provides a liquid crystal display panel, which includes a substrate, an opposite substrate, a liquid crystal stabilizing layer and a liquid crystal layer. The liquid crystal stabilizing layer is arranged on the substrate, wherein the surface of the liquid crystal stabilizing layer is provided with a plurality of projections. The liquid crystal layer is sealed between the substrate and the opposite substrate.
The present invention further provides a liquid crystal display device including a liquid crystal display panel and a backlight assembly. The liquid crystal display panel comprises a substrate, an opposite substrate, a liquid crystal stabilizing layer and a liquid crystal layer. The liquid crystal stabilizing layer is arranged on the substrate, wherein the surface of the liquid crystal stabilizing layer is provided with a plurality of projections. The liquid crystal layer is sealed between the substrate and the opposite substrate. And the backlight assembly is disposed adjacent to the substrate.
In the liquid crystal display panel and the liquid crystal display device of the present invention, the height of the protrusion is, for example, between 10 nm and 200 nm. In addition, the maximum width of the protrusion is, for example, between 150 nm and 600 nm.
In the liquid crystal display panel and the liquid crystal display device of the invention, the material of the liquid crystal stabilizing material layer is, for example, as shown in formula (1).
Formula (1):
wherein,
B. b' comprises aromatic or saturated cycloalkane (saturated ring core);
x, Y include terminal or reactive groups;
r, R ', R' is a crosslink between ring systems; and
z, Z' is a side chain substituent.
In the liquid crystal display panel and the liquid crystal display device of the present invention, the reactive group is, for example, acrylic, epoxy resin or other kind of reactive group, and the cross-linking between the ring systems is, for example, an alkyl structure.
In the liquid crystal display panel and the liquid crystal display device of the present invention, the liquid crystal stabilizing material layer is made of, for example:
or
In the liquid crystal display panel and the liquid crystal display device of the invention, for example, another liquid crystal stabilizing layer or an alignment layer may be selectively formed on the opposite substrate. Of course, the opposite substrate may also have an alignment layer and a liquid crystal stabilizing layer, wherein the alignment layer is located between the liquid crystal stabilizing layer and the opposite substrate.
In the liquid crystal display panel and the liquid crystal display device of the present invention, an alignment layer may be selectively disposed on the substrate, for example, between the substrate and the liquid crystal stabilizing layer.
In the liquid crystal display panel and the liquid crystal display device of the invention, the liquid crystal stabilizing layer has a convex pattern, for example.
The liquid crystal stabilizing layer is adopted to stabilize the liquid crystal molecules positioned at the junction of the liquid crystal layer and the liquid crystal stabilizing layer, so that the liquid crystal molecules are stabilized by the nano-scale protrusions on the liquid crystal stabilizing layer, and a better alignment effect is provided. Therefore, the liquid crystal molecules in the liquid crystal layer of the present invention have shorter response time compared to the prior art. In addition, the invention can adjust the geometrical shape of the projection according to the actual requirement, so that the liquid crystal molecules have different pre-tilt angles (pre-tilt angles).
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
Fig. 1 is a schematic cross-sectional view of a conventional lcd panel.
Fig. 2A to 2D are schematic flow charts illustrating a method for manufacturing a liquid crystal display panel according to a preferred embodiment of the invention.
Fig. 2E is a schematic diagram illustrating the formation of a liquid crystal stabilizing material layer on a substrate by a doctor blade.
FIG. 3 is an enlarged view of the protrusions according to the preferred embodiment of the present invention.
FIG. 4 is an enlarged view of the junction between the protrusion and the liquid crystal layer in FIG. 2D.
FIGS. 5A-5B are schematic diagrams illustrating that the pretilt angle of the liquid crystal molecules is affected by protrusions with different geometric shapes.
Fig. 6A to 6B are schematic views illustrating that protrusions with different shapes are formed by changing the composition of the protrusions.
FIG. 6C is a schematic diagram illustrating the formation of bumps with different shapes by changing the irradiation intensity of light.
FIGS. 7A-7C are schematic diagrams illustrating a process of forming a protrusion pattern on a liquid crystal stabilizer layer in a process of fabricating a liquid crystal display panel.
Fig. 8A to 8C are schematic views illustrating various other types of lcd panels according to the preferred embodiment of the invention.
FIGS. 9A-9C are schematic views illustrating a manufacturing process of another LCD panel according to the present invention.
Fig. 10A and 10B are schematic diagrams illustrating another method of forming various other types of lcd panels.
FIG. 11 is a schematic view of a liquid crystal display device according to a preferred embodiment of the invention.
[ detailed description ] embodiments
Fig. 2A to 2D are schematic flow charts illustrating a method for manufacturing a liquid crystal display panel according to a preferred embodiment of the invention. First, referring to fig. 2A, a substrate 210 is provided, and a liquid crystal stabilizing material layer 220 is formed on the substrate 210. In the present embodiment, the liquid crystal stabilizing material layer 220 is formed by, for example, dropping the liquid crystal stabilizing material on the transfer roller 300, and then forming the liquid crystal stabilizing material layer 220 with an appropriate thickness on the substrate 210 by using the relative movement (as shown by the direction 350) between the transfer roller 300 and the substrate 210.
In addition, in addition to the above-mentioned forming of the liquid crystal stabilizing material layer 220 by the transfer roller 300, in other embodiments of the present invention, the liquid crystal stabilizing material layer 220 may be formed by other methods. For example, fig. 2E is a schematic diagram illustrating the formation of the liquid crystal stabilizing material layer 220 on the substrate 210 by a scraper 310, for example, by moving the scraper 310 along a direction 355 relative to the substrate 210 to form the liquid crystal stabilizing material layer 220 with a suitable thickness on the substrate 210.
Next, as shown in fig. 2B, after the liquid crystal stabilizing material layer 220 is formed on the substrate 210, for example, the liquid crystal stabilizing material layer 220 may be dried. In a preferred embodiment, the substrate 210 with the liquid crystal stabilizing material layer 220 formed thereon may be baked (baking) in an environment with a temperature between 50-200 degrees celsius, for example, to dry the liquid crystal stabilizing material layer 220.
Then, referring to fig. 2C, a light 320 is irradiated on the liquid crystal stabilizing material layer 220, so that the liquid crystal stabilizing material layer 220 is transformed into a liquid crystal stabilizing layer, wherein the light 320 may be, for example, ultraviolet light, and the material composition of the liquid crystal stabilizing material layer 220 is as shown in formula (1).
Formula (1):
wherein,
B. b' includes, for example, aromatic or saturated cycloalkanes (saturated ring core);
x, Y includes, for example, terminal or reactive groups, where the reactive groups may be acrylic, epoxy, or other types of reactive groups;
r, R ', R' are, for example, crosslinks between ring systems, where crosslinks between ring systems include alkyl structures; and
z, Z' is a side chain substituent.
For example, the liquid crystal stabilizing material layer 220 may be made of:
After the liquid crystal stabilizing material layer 220 is transformed into the liquid crystal stabilizing layer 230, a plurality of protrusions 230a with nanometer-scale dimensions are formed on the surface of the liquid crystal stabilizing layer 230, and the geometric dimension thereof is between about tens of nanometers and hundreds of nanometers. Fig. 3 is an enlarged schematic view of the protrusion 230a according to a preferred embodiment of the invention. As shown in fig. 3, the protrusions 230a are, for example, cone-shaped, and have a height h ranging from 10 nm to 100 nm, for example, and a maximum width w of the protrusions 230a ranging from 150 nm to 600 nm, for example.
It is noted that although the protrusions 230a are tapered in geometric shape in the embodiment, one skilled in the art can form the protrusions 230a with different geometric shapes according to different materials of the liquid crystal stabilizing material layer 220.
Then, referring to fig. 2D, an opposite substrate 240 is provided, and an alignment layer 250 is formed on the opposite substrate 240, wherein the alignment layer is made of, for example, a polyamide material. Then, a liquid crystal layer 260 is sealed between the substrate 210 and the opposite substrate 240 to form the liquid crystal display panel 200a, wherein the liquid crystal layer 260 is made of nematic (nematic) liquid crystal, spiral nematic (cholesteric) liquid crystal, or other types of liquid crystal materials.
In addition, although the above embodiment is performed before the substrate 210 and the opposite substrate 240 are assembled, the liquid crystal stabilizing material layer 220 on the substrate 210 is irradiated to form the liquid crystal stabilizing layer 230 (as shown in fig. 2C). However, in another preferred embodiment, for example, after the substrate 210 and the opposite substrate 240 are assembled, the light 320 may be irradiated to the liquid crystal material layer 220 to convert the liquid crystal material layer 220 into the liquid crystal stabilizing layer 230.
FIG. 4 is an enlarged view of the junction between the protrusion 230a and the liquid crystal layer 260 in FIG. 2D. Referring to fig. 4, the geometric dimension of the protrusion 230a is in the order of nanometers, and at the boundary between the protrusion 230a and the liquid crystal layer 260, the molecular structure on the surface of the protrusion 230a and the nearby liquid crystal molecules can form a stable structure together, so the protrusion 230a of the present embodiment has the functions of stabilizing the liquid crystal molecules and stabilizing the rotation direction of the liquid crystal molecules.
It should be noted that the protrusions 230a on the liquid crystal stabilizing layer 230 not only can stabilize the liquid crystal molecules, but also can provide a pre-tilt angle for the liquid crystal molecules to achieve the effect of wide viewing angle. Fig. 5A and 5B are schematic diagrams respectively illustrating that the pretilt angle of the liquid crystal molecules is affected by the protrusions with different geometric shapes. The h/w value of protrusion 230a shown in FIG. 5A is smaller than the h '/w value of protrusion 230 a' shown in FIG. 5B. Thus, if the pretilt angle of the liquid crystal molecules 262 is defined as the angle between the major axis of the liquid crystal molecules and the horizontal direction (as shown in FIG. 5A), the pretilt angle of the liquid crystal molecules 262 in FIG. 5D is larger than the pretilt angle 'of the liquid crystal molecules 262' in FIG. 5B. In other words, the present embodiment can provide different liquid crystal stabilization and alignment effects by adjusting the geometry (profile) of the protrusion 230a (e.g., h/w value).
The above-mentioned method for changing the geometric shape of the protrusion 230a will be exemplified below.
Fig. 6A to 6B are schematic views illustrating that protrusions with different shapes are formed by changing the composition of the protrusions. Referring to fig. 6A, the present embodiment can adjust the geometric shape of the protrusion 230a by, for example, whether to remove the reactive group X in the liquid crystal stabilizing material as shown in formula (1). For example, when the liquid crystal stabilizing material shown in formula (1) does not have the reactive group X, the h/w value of the formed protrusion 230a is smaller than that of the protrusionThe h '/w' value of the projections 230a formed when having the reactive group X. In addition, referring to fig. 6B, the embodiment can also adjust the geometric shape of the protrusion 230a by adjusting the chain length of the cross-link R' or R ″ between ring systems in the liquid crystal stabilizing material as shown in formula (1). For example, when the cross-links R 'and R' in the liquid crystal stabilizing material represented by the formula (1) are- (CH)2)6when-H/W is smaller than when crosslinks R 'and R' are shorter- (CH) the formed projections 230a have2)3The h '/w' value of the corresponding protrusion 230 a.
Of course, in addition to adjusting the composition of the liquid crystal stabilizing material shown in (1), the present embodiment can also adjust the geometric shape of the protrusion 230a by changing the composition of the liquid crystal stabilizing material. For example, when the reactive group X or Y of the liquid crystal stabilizing material shown in formula (1) is acrylic, the protrusions 230a formed by the reactive group X or Y in formula (1) are different from each other in geometric shape when the reactive group X or Y is epoxy.
In addition, if the liquid crystal stabilizing material layer 220 is irradiated by light with different intensities, the protrusions 230a on the liquid crystal stabilizing material layer 230 are formed with different geometric shapes. FIG. 6C is a schematic diagram illustrating the formation of bumps with different shapes by changing the irradiation intensity of light. As shown in FIG. 6C, when the intensity of the irradiated light 320 is stronger, the h/w value of the formed protrusions 230a will be smaller than the h/w value of the protrusions 230a formed by the irradiation of the weaker light 320.
Based on the above, the present invention can adjust the geometric shape (e.g. h/w value) of the protrusions 230a by changing the illumination intensity, the composition of the liquid crystal stabilizing material, and the like. Of course, in other embodiments of the present invention, the same purpose can be achieved by changing the temperature of the manufacturing process or other manufacturing process parameters, and the description thereof is omitted.
In addition, in order to enhance the alignment effect of the liquid crystal stabilizer layer 230, the present invention can form a protrusion pattern on the liquid crystal stabilizer layer 230 in addition to adjusting the geometric shape of the protrusion 230 a. Fig. 7A to 7C are schematic diagrams illustrating a process of forming a protrusion pattern on a liquid crystal stabilizing layer in a process of manufacturing a liquid crystal display panel. In the foregoing manufacturing process of the liquid crystal display panel 200a, after the liquid crystal stabilizing material layer 220 is formed on the substrate 210 (fig. 2B) and before the liquid crystal stabilizing material layer 220 is irradiated with the light 320, for example, as shown in fig. 7A, the embodiment may further provide a stamper 330 and move the stamper 330 along a direction 360, wherein a surface of the stamper 330 has a protrusion pattern 332. Thereafter, as shown in fig. 7B, the stamper 332 is pressed onto the liquid crystal stabilizing material layer 220 with a predetermined pressure, so that the protrusion pattern 332 on the stamper 330 is transferred onto the liquid crystal stabilizing material layer 220. Next, as shown in fig. 7C, the stamper 330 is removed, and the liquid crystal stabilization material layer 220 is irradiated with light 320, so as to obtain the liquid crystal stabilization layer 230 having the protrusion pattern 332. The liquid crystal stabilizer layer 230 with the protrusion patterns 332 can provide a better liquid crystal alignment effect, thereby further improving the viewing angle range of the liquid crystal display panel 200 a.
In addition, the liquid crystal display panel 200a of the present embodiment can form a plurality of different types of liquid crystal display panels by matching the liquid crystal stabilizing layer and the alignment layer, for example, in addition to forming the liquid crystal stabilizing layer 230 on the substrate 210 and forming the alignment layer 250 on the opposite substrate 240. Fig. 8A to 8C are schematic views illustrating various other types of lcd panels according to the preferred embodiment of the invention.
Referring to fig. 8A, in the manufacturing process of the liquid crystal display panel 200a, in addition to the configuration shown in fig. 2D, another liquid crystal stabilizing layer 235 may be formed on the opposite substrate 240 instead of the alignment layer 250 in fig. 2D, so that the liquid crystal display panel 200b has the liquid crystal stabilizing layer 230 on the substrate 210 and the liquid crystal stabilizing layer 235 on the opposite substrate 240.
In addition, referring to fig. 8B, another alignment layer 255 may be formed on the substrate 210 before the liquid crystal stabilizing material layer 230 is formed, such that the liquid crystal display panel 200c has the alignment layer 255 and the liquid crystal stabilizing layer 230 on the substrate 210, and has the alignment layer 250 on the opposite substrate 240, wherein the alignment layer 255 is disposed between the liquid crystal stabilizing layer 230 and the substrate 210. 200c
In addition, referring to fig. 8C, for example, the alignment layers 255 and 250 may be formed on the substrate 210 and the opposite substrate 240, respectively, and then the liquid crystal stabilizing layers 230 and 235 are formed on the two alignment layers 250, respectively, so that the liquid crystal display panel 200d has the alignment layer 255 and the liquid crystal stabilizing layer 230 on the substrate 210 and the alignment layer 235 on the opposite substrate 240, wherein the alignment layer 255 is located between the liquid crystal stabilizing layer 230 and the substrate 210, and the alignment layer 250 is located between the liquid crystal stabilizing layer 235 and the opposite substrate 240.
It is noted that although the liquid crystal stabilizing layers 230 and 255 exist separately in fig. 2D and 8A to enable the liquid crystal molecules of the liquid crystal layer 230 to achieve a stable alignment state, when the liquid crystal display panel of the present embodiment is configured with the alignment layer 255 disposed between the liquid crystal stabilizing layer 230 and the substrate 210 as shown in fig. 8B, or the alignment layer 255 is disposed between the liquid crystal stabilizing layer 230 and the substrate 210 and the alignment layer 250 is disposed between the liquid crystal stabilizing layer 235 and the opposite substrate 240 as shown in fig. 8C, the stacked structure of the liquid crystal stabilizing layer and the alignment layer of fig. 8B and 8C can enable the liquid crystal molecules of the liquid crystal layer 230 to achieve a stable alignment state relatively quickly.
In addition, although the liquid crystal display panel 200a of fig. 2D and the liquid crystal display panel 200b of fig. 8A cannot shorten the time for the liquid crystal molecules to reach the stable state through the stacked structure of the liquid crystal stabilizing layer and the alignment layer, in this embodiment, a potential energy may be applied between the substrate 210 and the opposite substrate 240 of fig. 2D and fig. 8A, so that the liquid crystal molecules of the liquid crystal layer 230 can reach the stable alignment state relatively quickly. Of course, in the embodiment shown in fig. 8B and 8C, a potential is applied between the substrate 210 and the opposite substrate 240, so that the liquid crystal molecules of the liquid crystal layer 230 can reach a stable alignment state more quickly due to the potential and the stacked structure of the liquid crystal stabilizing layer and the alignment layer.
In addition to the above-mentioned method of coating the liquid crystal stabilizing material on the substrate or the opposite substrate to form the liquid crystal stabilizing layer, the present invention can further, for example, directly dope the liquid crystal stabilizing material into the liquid crystal layer, and form the liquid crystal stabilizing layer at the interface between the liquid crystal layer and the substrate (or the opposite substrate) after the panel is assembled.
FIGS. 9A-9C are schematic views illustrating a manufacturing process of another LCD panel according to the present invention. Referring to fig. 9A, a substrate 210 and a liquid crystal mixture 270 are provided, wherein the liquid crystal mixture 270 is mainly formed by mixing a liquid crystal material and a liquid crystal stabilizing material, and the material of the liquid crystal stabilizing material is shown as formula (1). Thereafter, the liquid crystal mixture 270 is formed on the substrate 210 by, for example, One Drop Fill (ODF).
Referring to fig. 7B, an opposite substrate 240 is provided, and a liquid crystal mixture 270 is sealed between the substrate 210 and the opposite substrate 240. Then, as shown in fig. 7C, the liquid crystal mixture 270 between the substrate 210 and the opposite substrate 240 is irradiated by the light 320 to form the liquid crystal stabilizing layers 230 and 235 at the boundary between the liquid crystal mixture 270 and the substrate 210 and the boundary between the liquid crystal mixture 270 and the opposite substrate 240, respectively, so as to obtain the liquid crystal display panel 200 e.
In the above-mentioned lcd panel 200e, the substrate 210 and the opposite substrate 240 may have an alignment layer disposed between the substrate 210 and the liquid crystal stabilizing layer 230 or between the opposite substrate 240 and the liquid crystal stabilizing layer 235 in addition to the liquid crystal stabilizing layers 230 and 235, for example, fig. 10A and 10B are schematic diagrams of various other types of lcd panels formed by this way.
Referring to fig. 10A, in the manufacturing process of the liquid crystal display panel 200f, for example, before dropping the liquid crystal mixture 270 on the substrate 210, an alignment layer 255 may be formed on the substrate 210, so that when the liquid crystal display panel 200f is completed, the substrate 210 has the alignment layer 255 and the liquid crystal stabilizing layer, and the opposite substrate 240 has the liquid crystal stabilizing layer 235, wherein the alignment layer 255 is disposed between the liquid crystal stabilizing layer 230 and the substrate 210.
In addition, referring to fig. 10B, for example, before dropping the liquid crystal mixture 270 on the substrate 210, alignment layers 250 and 255 may be formed on the substrate 210 and the opposite substrate 240, so that when the liquid crystal display panel 200g is completed, the substrate 210 has the alignment layer 255 and the liquid crystal stabilization layer 230, the opposite substrate 240 has the alignment layer 250 and the liquid crystal stabilization layer 235, wherein the alignment layer 255 is disposed between the liquid crystal stabilization layer 230 and the substrate 210, and the alignment layer 250 is disposed between the liquid crystal stabilization layer 235 and the opposite substrate 240.
It is noted that although the liquid crystal stabilizing layers 230 and 235 are separately present in fig. 9C to enable the liquid crystal molecules of the liquid crystal layer 230 to achieve a stable alignment state, when the liquid crystal display panel of the present embodiment is configured with the alignment layer 255 disposed between the liquid crystal stabilizing layer 230 and the substrate 210 as shown in fig. 10A, or the alignment layer 255 is disposed between the liquid crystal stabilizing layer 230 and the substrate 210 and the alignment layer 250 is disposed between the liquid crystal stabilizing layer 235 and the opposite substrate 240 as shown in fig. 8C, the stacked structure of the liquid crystal stabilizing layer and the alignment layer of fig. 10A and 10B enables the liquid crystal molecules of the liquid crystal layer 230 to achieve a stable alignment state relatively quickly.
In addition, although the liquid crystal display panel 200e of fig. 9C cannot shorten the time for the liquid crystal molecules to reach the stable state through the stacked structure of the liquid crystal stabilizing layer and the alignment layer, in this embodiment, a potential energy may be applied between the substrate 210 and the opposite substrate 240 of fig. 9C, so that the liquid crystal molecules of the liquid crystal layer 230 can reach the stable alignment state more quickly. Of course, in the embodiment shown in fig. 10A and 10B, a potential is applied between the substrate 210 and the opposite substrate 240, so that the liquid crystal molecules of the liquid crystal layer 230 can reach a stable alignment state more quickly under the influence of the potential and the stacked structure of the liquid crystal stabilizing layer and the alignment layer.
After the liquid crystal display panel 200 is completed, the present embodiment may further dispose a backlight assembly 600 adjacent to the substrate 210 to form the liquid crystal display device 50, as shown in fig. 11, wherein the backlight assembly 600 is used to provide a backlight source with proper intensity for the liquid crystal display panel 200 a.
In summary, the liquid crystal stabilizing layer of the present invention can stabilize liquid crystal molecules, stabilize the rotation direction of the liquid crystal molecules and make the alignment effect of the liquid crystal molecules better through the nano-scale protrusions. Therefore, compared with the prior art, the liquid crystal display panel provided by the invention has the advantages of shorter response time, wide viewing angle and the like. In addition, the invention can adjust the geometrical shape of the convex object on the liquid crystal stabilizing layer by changing the illumination intensity, the composition of the liquid crystal stabilizing material, the manufacturing process temperature or other manufacturing process parameters, so the invention can adjust the response time and the pretilt angle of the liquid crystal molecules according to actual requirements, and the liquid crystal display panel has better display effect.
Although the present invention has been described with reference to particular embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A liquid crystal display device, comprising:
a liquid crystal display panel, comprising:
a substrate;
a counter substrate;
a liquid crystal stable layer configured on the substrate, wherein the surface of the liquid crystal stable layer is provided with a plurality of protrusions, the geometric shape of the protrusions is h/w value, wherein h is the height of the protrusions, w is the width of the protrusions, and the geometric dimension of the protrusions is in nanometer level; and
a nematic liquid crystal layer arranged on the liquid crystal stabilizing layer and sealed between the substrate and the opposite substrate, wherein the protrusion provides a plurality of pre-tilt angles for the nematic liquid crystal layer, and the pre-tilt angles are included angles between the main axis of the liquid crystal molecules and the horizontal direction; and
a backlight assembly adjacent to the substrate;
the material of the liquid crystal stabilizing layer is shown as a formula (1), wherein the formula (1):
wherein,
B. b' comprises aromatic or saturated cycloalkanes;
x, Y include terminal or reactive groups;
r, R ', R' is a crosslink between ring systems; and
z, Z' is a side chain substituent.
2. The liquid crystal display device of claim 1, wherein the height of the protrusions is between 10 nm and 200 nm.
3. The liquid crystal display device of claim 1, wherein the maximum width of the protrusion is between 150 nm and 600 nm.
4. The liquid crystal display device according to claim 1, wherein the reactive group comprises acrylic or epoxy resin.
5. The liquid crystal display device of claim 1, wherein the cross-linking between ring systems comprises an alkyl structure.
6. The liquid crystal display device of claim 1, further comprising an alignment layer disposed on the opposite substrate.
7. The liquid crystal display device of claim 6, further comprising another alignment layer disposed between the substrate and the liquid crystal stabilization layer.
8. The liquid crystal display device of claim 1, further comprising another liquid crystal stabilizer layer disposed on the opposite substrate.
9. The liquid crystal display device of claim 8, further comprising an alignment layer disposed between the substrate and the liquid crystal stabilization layer, and another alignment layer disposed between the opposite substrate and the other liquid crystal stabilization layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510113470XA CN1949062B (en) | 2005-10-12 | 2005-10-12 | Liquid crystal display panel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510113470XA CN1949062B (en) | 2005-10-12 | 2005-10-12 | Liquid crystal display panel and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1949062A CN1949062A (en) | 2007-04-18 |
| CN1949062B true CN1949062B (en) | 2012-05-09 |
Family
ID=38018621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510113470XA Expired - Lifetime CN1949062B (en) | 2005-10-12 | 2005-10-12 | Liquid crystal display panel and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1949062B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201003258A (en) | 2008-07-08 | 2010-01-16 | Chi Mei Optoelectronics Corp | Liquid crystal display and pixel structure |
| JP5630014B2 (en) * | 2009-01-30 | 2014-11-26 | ソニー株式会社 | Manufacturing method of liquid crystal display device |
| CN105093620B (en) * | 2015-08-07 | 2018-03-06 | 深圳市华星光电技术有限公司 | Public advertising display screen and preparation method thereof |
| CN111025775A (en) | 2019-12-16 | 2020-04-17 | 深圳市华星光电半导体显示技术有限公司 | Curved surface screen |
-
2005
- 2005-10-12 CN CN200510113470XA patent/CN1949062B/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1949062A (en) | 2007-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7910178B2 (en) | Liquid crystal display device and method of producing the same | |
| US6630975B1 (en) | Liquid crystal display device, and method for producing the same | |
| CN109613765B (en) | Liquid crystal display panel | |
| JP2004318077A (en) | Liquid crystal display device and method of manufacturing the same | |
| JP2004226974A (en) | Non-rubbing liquid crystal orientation method | |
| KR20000006245A (en) | Liquid crystal display device and method for manufacturing the same | |
| US20080153379A1 (en) | Method of manufacturing liquid crystal display | |
| CN218917879U (en) | Dimming device | |
| CN101285967A (en) | Liquid crystal display device and manufacturing method thereof | |
| US20090174851A1 (en) | Liquid crystal display panel and manufacturing method thereof | |
| KR100343634B1 (en) | Liquid crystal display device | |
| US20110299020A1 (en) | Liquid crystal display device and method of manufacturing same | |
| CN1949062B (en) | Liquid crystal display panel and manufacturing method thereof | |
| CN101387781A (en) | Liquid crystal display panel and manufacturing method thereof | |
| CN100392501C (en) | Liquid crystal alignment additive, liquid crystal display device comprising same and manufacturing method | |
| TWI666496B (en) | Manufacturing method of display panel | |
| WO2010109804A1 (en) | Liquid crystal display apparatus | |
| JP2008158187A (en) | Liquid crystal display element and manufacturing method thereof | |
| US20180356690A1 (en) | Method for manufacturing display panel and display panel obtained thereby | |
| US7755732B2 (en) | Liquid crystal display panel and method for manufacturing the same | |
| CN118057233A (en) | A dimming device and a method for manufacturing the same | |
| CN101165555B (en) | Liquid crystal display panel | |
| CN101840098B (en) | Liquid crystal display panel and manufacturing method thereof | |
| CN105182617B (en) | Display panel and method for manufacturing the same | |
| KR20010065035A (en) | Method for fabrication a liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120301 Address after: Taiwan, China 350 Hsinchu science and Technology Industrial Park, Miaoli County, Southern Town, science Road, No. 160 Applicant after: CHI MEI OPTOELECTRONICS CORP. Address before: China Taiwan 74144 Tainan County Tainan Science Industrial Park odd Road No. 1 Applicant before: CHI MEI OPTOELECTRONICS CORP. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |
|
| CX01 | Expiry of patent term |