CN112327531A - Method for reducing Ton of liquid crystal display panel and liquid crystal display panel - Google Patents
Method for reducing Ton of liquid crystal display panel and liquid crystal display panel Download PDFInfo
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- CN112327531A CN112327531A CN202011405664.8A CN202011405664A CN112327531A CN 112327531 A CN112327531 A CN 112327531A CN 202011405664 A CN202011405664 A CN 202011405664A CN 112327531 A CN112327531 A CN 112327531A
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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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
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
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- Nonlinear Science (AREA)
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- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
The application provides a method for reducing Ton of a liquid crystal display panel, which comprises the following steps: providing a first liquid crystal test piece, respectively dropping two liquid crystal test pieces into liquid crystal with a first preset value of a gap between the two liquid crystal test pieces, a second preset value of retardation and different VT curves, and adjusting liquid crystal driving voltage to obtain a first variation relation; dripping the same kind of liquid crystal on the same substrate of the same machine type, and adjusting the liquid crystal driving voltage to obtain a second variation relation; providing a second liquid crystal test piece, respectively dropping liquid crystals with the same liquid crystal gap being a third preset value, respectively manufacturing liquid crystals with pretilt angles being a fourth preset value and a fifth preset value, and adjusting liquid crystal driving voltages to respectively obtain a third variation relation; measuring a fourth variation relation of Ton along with variation of the pretilt angle under the same liquid crystal driving voltage by using the same liquid crystal; and acquiring a target VT curve and a target pretilt angle according to the first variation relation, the second variation relation, the third variation relation and the fourth variation relation so as to make the Ton smaller.
Description
Technical Field
The application relates to the technical field of display, in particular to a method for reducing Ton of a liquid crystal display panel and the liquid crystal display panel.
Background
The liquid crystal response refers to the response speed of each pixel of the LCD to the input signal, and generally, the time for the luminance to change from 10% to 90% is defined as Ton, and the time for the luminance to change from 90% to 10% is defined as toff. The response time of the liquid crystal is closely related to the fluency of the picture, and if the liquid crystal is slow in response, the situation of picture tailing can be seen when a dynamic picture is watched. Therefore, for the LCD panel, the response time of the liquid crystal is a very important parameter, and the smaller Ton, the shorter the time required for the voltage representing the liquid crystal to change from the initial state to the direction parallel to the electric field, and the smaller Toff, the shorter the time required for the liquid crystal to return to the initial state after the Pixel voltage is removed. For a liquid crystal LCD, the smaller the Ton/Toff, the faster the response time that the liquid crystal can provide and the better the smoothness of the picture.
The magnitude of Ton/Toff is related to the liquid crystal, Ton mainly deflects along the direction of the electric field under the action of the electric field, and mainly functions as K11/K33 of the liquid crystal, Toff mainly functions as the time required for the liquid crystal to rebound and return to the initial state under the condition of no electricity supply, and also mainly functions as K11/K33. However, in high-end products, because of the requirement of the products for the viewing angle, the existing LCD adopts the design of 8 domains to add liquid crystals in different directions to achieve the effect of viewing angle compensation, but there is a pressure difference between the main pixel and the auxiliary pixel, and during the actual lighting process, the deflection of the liquid crystals of the main pixel and the auxiliary pixel is different, and for the panel, the overall liquid crystal response is different.
Therefore, the prior art has defects and needs to be improved urgently.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method for reducing Ton of a liquid crystal display panel and a liquid crystal display panel, which can achieve the effects of increasing response speed of the liquid crystal display panel and improving display quality.
The embodiment of the application provides a method for reducing Ton of a liquid crystal display panel, which comprises the following steps:
providing a first liquid crystal test piece, respectively dropping two liquid crystal test pieces into liquid crystal with a first preset value of a liquid crystal gap, a second preset value of retardation and different VT curves, and adjusting liquid crystal driving voltage to respectively obtain a first variation relation of Ton along with variation of the liquid crystal driving voltage;
dripping the same kind of liquid crystal on the same substrate of the same model, and adjusting the liquid crystal driving voltage to obtain a second variation relation of Ton along with the variation of the liquid crystal driving voltage;
providing a second liquid crystal test piece, respectively dropping liquid crystals with the same liquid crystal gap being a third preset value, respectively manufacturing liquid crystals with pretilt angles being a fourth preset value and a fifth preset value, and adjusting liquid crystal driving voltage to respectively obtain a third change relation of Ton under different pretilt angles along with the change of the liquid crystal driving voltage;
on the same model, the same liquid crystal is adopted, and under the same liquid crystal driving voltage, the pretilt angle is adjusted to obtain a fourth variation relation of Ton along with variation of the pretilt angle;
and acquiring a target VT curve and a target pretilt angle according to the first variation relation, the second variation relation, the third variation relation and the fourth variation relation so as to make the Ton smaller.
Optionally, in the method for reducing the Ton of the liquid crystal display panel according to the embodiment of the present application, the first preset value is 3.0um to 3.4um, and the second preset value is 340nm to 360 nm.
Optionally, in the method for reducing the Ton of the liquid crystal display panel according to the embodiment of the present application, the first preset value is 3.2 um.
Optionally, in the method for reducing the Ton of the liquid crystal display panel according to the embodiment of the present application, the second preset value is 350 nm.
Optionally, in the method for reducing Ton of the liquid crystal display panel according to the embodiment of the present application, in the step of adjusting the liquid crystal driving voltage to respectively obtain the first variation relations of Ton with the variation of the liquid crystal driving voltage, the variation range of the liquid crystal driving voltage is 4V to 7V.
Optionally, in the method for reducing the Ton of the liquid crystal display panel according to the embodiment of the present application, the third preset value is 3.1um to 3.5um, the third preset value is 1.2 degrees to 1.4 degrees, and the fifth preset value is 2.3 degrees to 2.5 degrees.
Optionally, in the method for reducing the Ton of the liquid crystal display panel according to the embodiment of the present application, the third preset value is 3.3 um.
Optionally, in the method for reducing the Ton of the liquid crystal display panel according to the embodiment of the present application, the fourth preset value is 1.3 degrees, and the fifth preset value is 2.4 degrees.
Optionally, in the method for reducing the Ton of the liquid crystal display panel according to the embodiment of the present application, in the step of adjusting the liquid crystal driving voltage to respectively obtain the third variation relationship between the Ton at different pretilt angles and the variation of the liquid crystal driving voltage, the variation range of the liquid crystal driving voltage is 3V to 7V.
In a second aspect, embodiments of the present application further provide a liquid crystal display panel, which is prepared by any one of the methods described above.
As can be seen from the above, in the embodiment of the present application, by providing a first liquid crystal test strip, dropping two liquid crystals with a first preset liquid crystal gap, a second preset retardation and different VT curves, respectively, and adjusting the liquid crystal driving voltage to obtain a first variation relationship of Ton along with the variation of the liquid crystal driving voltage; dripping the same kind of liquid crystal on the same substrate of the same model, and adjusting the liquid crystal driving voltage to obtain a second variation relation of Ton along with the variation of the liquid crystal driving voltage; providing a second liquid crystal test piece, respectively dropping liquid crystals with the same liquid crystal gap being a third preset value, respectively manufacturing liquid crystals with pretilt angles being a fourth preset value and a fifth preset value, and adjusting liquid crystal driving voltage to respectively obtain a third change relation of Ton under different pretilt angles along with the change of the liquid crystal driving voltage; measuring a fourth variation relation of Ton along with variation of the pretilt angle on the same model by using the same liquid crystal and under the same liquid crystal driving voltage; acquiring a target VT curve and a target pretilt angle according to the first variation relation, the second variation relation, the third variation relation and the fourth variation relation so as to make Ton smaller; therefore, the optimal design of the Ton is realized, and the Ton can be reduced, so that the response speed and the display quality of the liquid crystal display panel are achieved.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a flowchart of a method for reducing Ton of a liquid crystal display panel according to an embodiment of the present disclosure.
Fig. 2 is a graph corresponding to the first variation provided in the embodiment of the present application.
Fig. 3 is a histogram corresponding to the second variation provided in the embodiment of the present application.
Fig. 4 is a graph corresponding to a third variation provided in the embodiment of the present application.
Fig. 5 is a histogram corresponding to a fourth variation provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a flowchart of a method for reducing Ton of a liquid crystal display panel in some embodiments of the present application, the method including:
s101, providing a first liquid crystal test piece, respectively dropping two liquid crystals with a first preset liquid crystal gap, a second preset liquid crystal retardation and different VT curves, and adjusting liquid crystal driving voltage to respectively obtain a first variation relation of Ton along with variation of the liquid crystal driving voltage.
S102, dropping the same kind of liquid crystal on the same substrate of the same model, and adjusting the liquid crystal driving voltage to obtain a second variation relation of Ton along with the variation of the liquid crystal driving voltage.
S103, providing a second liquid crystal test piece, respectively dropping liquid crystals with the same liquid crystal gap being a third preset value, respectively manufacturing liquid crystals with pretilt angles being a fourth preset value and a fifth preset value, and adjusting liquid crystal driving voltage to respectively obtain a third change relation of Ton under different pretilt angles along with the change of the liquid crystal driving voltage.
And S104, on the same model, adopting the same liquid crystal, and under the same liquid crystal driving voltage, adjusting the pretilt angle to obtain a fourth variation relation of Ton along with variation of the pretilt angle.
And S105, acquiring a target VT curve and a target pretilt angle according to the first variation relation, the second variation relation, the third variation relation and the fourth variation relation so as to make the Ton smaller.
In step S101, GAP refers to a liquid crystal GAP. The first preset value ranges from 3.0um to 3.4um, and the second preset value ranges from 340nm to 360 nm. Preferably, in some embodiments, the first preset value is 3.2 um. The second preset value is 350 nm. Wherein the variation range of the liquid crystal driving voltage is 4V-7V. Of course, it is not limited thereto, and other value ranges may be adopted.
The first variation is a graph, as shown in fig. 2, which is a graph corresponding to the first variation. In fig. 2, for different VT curves, the Ton varies more and more with the VT to the left, under different liquid crystal driving voltages.
In step S102, the variation range of the liquid crystal driving voltage is 3-7V. The second variation is a line graph, and specifically, as shown in fig. 3, Tr% decreases and Ton decreases as the liquid crystal driving voltage decreases.
In step S103, the third preset value ranges from 3.1um to 3.5um, the third preset value ranges from 1.2 degrees to 1.4 degrees, and the fifth preset value ranges from 2.3 degrees to 2.5 degrees. Preferably, the third preset value is 3.3 um. The fourth preset value is 1.3 degrees as the best, and the fifth preset value is 2.4 degrees as the best. Of course, it is not limited thereto, and other value ranges may be adopted.
In step S103, the liquid crystal driving voltage varies from 3V to 7V. Of course, it is not limited thereto, and other value ranges may be adopted.
The third variation curve is shown in fig. 4, and Ton varies with the driving voltage of the liquid crystal under different pretilt angles.
In step S104, a fourth variation of Ton with pretilt angle is shown in fig. 5, where the larger the pretilt angle PTA, the smaller the corresponding Ton.
In step S105, since the liquid crystal branches normally tilt within the normal voltage range, and after the liquid crystal branches reach the saturation voltage, the liquid crystal is not controlled, and liquid crystal backflow occurs, and it can be known from Tr and the response curve that after the voltage is increased to a certain degree, the middle process Tr is inverted, the liquid crystal deflection changes, and Tr changes, thereby causing the response to be slow. Wherein, the time taken to drive each row is Tr. Therefore, through analyzing the first variation relation to the fourth variation relation, the liquid crystal material can increase the liquid crystal reflux voltage value and improve Ton by shifting VT to the right, the corresponding Tr has certain influence, the liquid crystal driving voltage can be reduced on the product, and the Ton can be effectively improved by increasing the pretilt angle.
As can be seen from the above, in the embodiment of the present application, by providing a first liquid crystal test strip, dropping two liquid crystals with a first preset liquid crystal gap, a second preset retardation and different VT curves, respectively, and adjusting the liquid crystal driving voltage to obtain a first variation relationship of Ton along with the variation of the liquid crystal driving voltage; dripping the same kind of liquid crystal on the same substrate of the same model, and adjusting the liquid crystal driving voltage to obtain a second variation relation of Ton along with the variation of the liquid crystal driving voltage; providing a second liquid crystal test piece, respectively dropping liquid crystals with the same liquid crystal gap being a third preset value, respectively manufacturing liquid crystals with pretilt angles being a fourth preset value and a fifth preset value, and adjusting liquid crystal driving voltage to respectively obtain a third change relation of Ton under different pretilt angles along with the change of the liquid crystal driving voltage; measuring a fourth variation relation of Ton along with variation of the pretilt angle on the same model by using the same liquid crystal and under the same liquid crystal driving voltage; acquiring a target VT curve and a target pretilt angle according to the first variation relation, the second variation relation, the third variation relation and the fourth variation relation so as to make Ton smaller; therefore, the optimal design of the Ton is realized, and the Ton can be reduced, so that the response speed and the display quality of the liquid crystal display panel are achieved.
The embodiment of the application also provides a liquid crystal display panel which is prepared by the method in any one of the above-mentioned methods. Specifically, the VT curve and the pretilt angle of the liquid crystal display panel are adjusted by using any one of the above methods, so as to obtain a liquid crystal display panel with a small Ton time.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A method of reducing Ton of a liquid crystal display panel, comprising:
providing a first liquid crystal test piece, respectively dropping two liquid crystal test pieces into liquid crystal with a first preset value of a liquid crystal gap, a second preset value of retardation and different VT curves, and adjusting liquid crystal driving voltage to respectively obtain a first variation relation of Ton along with variation of the liquid crystal driving voltage;
dripping the same kind of liquid crystal on the same substrate of the same model, and adjusting the liquid crystal driving voltage to obtain a second variation relation of Ton along with the variation of the liquid crystal driving voltage;
providing a second liquid crystal test piece, respectively dropping liquid crystals with the same liquid crystal gap being a third preset value, respectively manufacturing liquid crystals with pretilt angles being a fourth preset value and a fifth preset value, and adjusting liquid crystal driving voltage to respectively obtain a third change relation of Ton under different pretilt angles along with the change of the liquid crystal driving voltage;
on the same model, the same liquid crystal is adopted, and under the same liquid crystal driving voltage, the pretilt angle is adjusted to obtain a fourth variation relation of Ton along with variation of the pretilt angle;
and acquiring a target VT curve and a target pretilt angle according to the first variation relation, the second variation relation, the third variation relation and the fourth variation relation so as to make the Ton smaller.
2. The method of claim 1, wherein the first predetermined value is 3.0um to 3.4um, and the second predetermined value is 340nm to 360 nm.
3. The method of reducing the Ton of the liquid crystal display panel according to claim 2, wherein the first preset value is 3.2 um.
4. The method of reducing the Ton of the LCD panel of claim 3, wherein the second predetermined value is 350 nm.
5. The method of reducing the Ton of the lcd panel according to any one of claims 2 to 4, wherein in the step of adjusting the liquid crystal driving voltage to respectively obtain the first variation relationship of Ton with the variation of the liquid crystal driving voltage, the variation range of the liquid crystal driving voltage is 4V to 7V.
6. The method of claim 1, wherein the third predetermined value is 3.1um to 3.5um, the third predetermined value is 1.2 degrees to 1.4 degrees, and the fifth predetermined value is 2.3 degrees to 2.5 degrees.
7. The method of claim 6, wherein the third preset value is 3.3 um.
8. The method of claim 7, wherein the fourth predetermined value is 1.3 degrees and the fifth predetermined value is 2.4 degrees.
9. The method of any of claims 6 to 8, wherein in the step of adjusting the liquid crystal driving voltage to obtain a third variation relationship of Ton with the liquid crystal driving voltage at different pretilt angles, the variation range of the liquid crystal driving voltage is 3V to 7V.
10. A liquid crystal display panel characterized by being produced by the method according to any one of claims 1 to 9.
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| CN1344964A (en) * | 2000-04-17 | 2002-04-17 | 精工爱普生株式会社 | Liquid crystal device, projecting display device and electronic equipment |
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