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Preparation method for PDLC liquid crystal panel

A liquid crystal panel and liquid crystal technology, applied in optics, instruments, nonlinear optics, etc., can solve problems such as uneven distribution of polymers, uneven distribution of grooves, and uneven brightness of PDLC liquid crystal panels, so as to improve uneven brightness and improve overall quality effect

Active Publication Date: 2013-09-18
BOE TECH GRP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] However, in the process of preparing the above PDLC, the inventors found that in the process of curing the above mixture, the problem of uneven distribution of polymers will inevitably occur, that is, the distribution of polymer skeletons is uneven and the distribution of grooves between polymer skeletons is uneven. Even, resulting in uneven brightness of the PDLC LCD panel, affecting the overall display effect of the LCD panel

Method used

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  • Preparation method for PDLC liquid crystal panel
  • Preparation method for PDLC liquid crystal panel
  • Preparation method for PDLC liquid crystal panel

Examples

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preparation example Construction

[0025] figure 1 It is a schematic diagram of a method for preparing a PDLC liquid crystal panel provided by an embodiment of the present invention. Such as figure 1 As shown, the preparation method of the PDLC liquid crystal panel comprises:

[0026] Step 1, uniformly mixing liquid crystal molecules, photoinitiators and prepolymers to obtain a liquid crystal mixture;

[0027] Step 2, injecting the obtained liquid crystal mixture into an empty liquid crystal cell to form a liquid crystal cell;

[0028] Step 3, irradiating the liquid crystal cell with evenly alternating strong and weak light, and obtaining a PDLC liquid crystal panel after the liquid crystal mixture in the liquid crystal cell undergoes a polymerization reaction.

[0029] Because in this embodiment, uniform and alternating light rays are applied on the surface of the liquid crystal cell, the part irradiated by strong light forms a polymer skeleton (that is, a polymer skeleton) due to the polymerization reactio...

Embodiment 1

[0032] Such as figure 2 As shown, the preparation method of the PDLC liquid crystal panel that embodiment 1 introduces comprises the following steps:

[0033] Step 201, uniformly mixing liquid crystal molecules, photoinitiators and prepolymers to obtain a liquid crystal mixture 21;

[0034] The liquid crystal mixture is composed of liquid crystal molecules, photoinitiators and prepolymers according to the mass ratio (79±5)%: (1±0.05)%: (20±5)% mixed evenly, floating within this range The sum of the percentages of the three substances is equal to 100%. The test results show that the polymer and liquid crystal formed after the polymerization reaction of the liquid crystal mixture mixed at this ratio can achieve better transmittance, thus making the prepared PDLC liquid crystal panel have better brightness.

[0035] Preferably, the mass ratio of liquid crystal molecules, photoinitiators and prepolymers is 79:1:20.

[0036] Wherein, the prepolymer can be TMPTA (trimethylolprop...

Embodiment 2

[0051] Such as image 3 As shown, the preparation method of another kind of PDLC liquid crystal panel that embodiment 2 introduces comprises the following steps:

[0052] Step 301, uniformly mixing liquid crystal molecules, photoinitiators and prepolymers to obtain a liquid crystal mixture;

[0053] Step 302, injecting the obtained liquid crystal mixture into an empty liquid crystal cell to form a liquid crystal cell 34;

[0054] Step 303, output light through the laser 31;

[0055] Step 304, irradiating the light output by the laser onto the beam expander 32 to expand the beam;

[0056] It should be noted that since steps 301 to 304 in this embodiment are the same as steps 201 to 204 in the above-mentioned embodiment 1, even if there are slight differences between embodiment 1 and embodiment 2, the technical field Those skilled in the art can also reasonably deduce it based on relevant knowledge in the art, so no detailed description is given here. The difference between ...

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Abstract

The invention discloses a preparation method for a PDLC (Polymer Dispersed Liquid Crystal) liquid crystal panel, relates to the field of liquid crystal display, and solves the problem that the brightness of the PDLC liquid crystal panel prepared by the conventional preparation method is uneven. The method comprises the following steps: mixing the liquid crystal molecules, the photoinitiator and the prepolymer uniformly to the obtain liquid crystal compound; pouring the obtained liquid crystal compound into an LCD (Liquid Crystal Display) aneroid so as to form a liquid crystal cell; and exposing irradiating the liquid crystal cell with strong-weak uniform alternating light, and the PDLC liquid crystal panel is obtained after polymerization reaction of the liquid crystal compound in the liquid crystal cell.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a method for preparing a PDLC liquid crystal panel. Background technique [0002] Polymer Dispersed Liquid Crystal (PDLC, Polymer Dispersed Liquid Crystal) is a mixture of low-molecular liquid crystals and prepolymers, and undergoes a polymerization reaction under certain conditions to form micron-sized liquid crystal droplets that are evenly dispersed in the polymer network, and then The dielectric anisotropy of liquid crystal molecules is used to obtain materials with electro-optic response characteristics. It mainly works between the scattering state and the transparent state and has a certain gray scale. Compared with traditional liquid crystal devices, polymer-dispersed displays have many advantages, such as no need for polarizers and alignment layers, simple preparation process, and easy to make large-area flexible displays. Sensitive devices, electronically controll...

Claims

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Application Information

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IPC IPC(8): G02F1/1334G02F1/1333
CPCG02F1/1334G02F1/1333G02F1/1341
Inventor 李明超
Owner BOE TECH GRP CO LTD
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