Manufacture method of flexible liquid crystal panel and flexible liquid crystal panel

Patent metadata

Field	Value
Publication number	US-2016342009-A1
Application number	US-201514423425-A
Country	US
Kind code	A1
Filing date	Feb 6, 2015
Priority date	Nov 12, 2014
Publication date	Nov 24, 2016
Grant date	—

Abstract

The present invention provides a manufacture method of a flexible liquid crystal panel and a flexible liquid crystal panel. The manufacture method of the flexible liquid crystal panel first manufactures comb pixel electrodes ( 11 ), gate lines, data lines, TFTs and a color filter layer on a first flexible substrate ( 1 ); continuously coats a mixture of sealant ( 51′ ) and liquid crystal micro capsules ( 53 ) on a flexible carrier ( 30 ) in roll-to-roll, and meanwhile implements UV irradiation to the sealant ( 51′ ) for occurring polyreaction and solidification to become a polymeric layer ( 51 ), and the liquid crystal micro capsules ( 53 ) are distributed in the polymeric layer ( 51 ) to acquire a polymer/liquid crystal mixture layer ( 5 ); cuts a composite layer of the flexible carrier ( 30 ) and the polymer/liquid crystal mixture layer ( 5 ) to obtain a second flexible substrate ( 3 ); then, laminates the first flexible substrate ( 1 ) and the second flexible substrate ( 3 ); finally, laminates an upper polarizer ( 9 ) and a lower polarizer ( 7 ).

First claim

What is claimed is:

1 . A manufacture method of a flexible liquid crystal panel, comprising first manufacturing comb pixel electrodes, gate lines, data lines, TFTs and a color filter layer on a first flexible substrate; continuously coating a mixture of sealant and liquid crystal micro capsules on a flexible carrier in roll-to-roll, and meanwhile implementing UV irradiation to the sealant for occurring polyreaction and solidification to become a polymeric layer, wherein the liquid crystal micro capsules are distributed in the polymeric layer to acquire a polymer/liquid crystal mixture layer; cutting a composite layer of the flexible carrier and the polymer/liquid crystal mixture layer to obtain a second flexible substrate; then, laminating the first flexible substrate and the second flexible substrate to package the polymer/liquid crystal mixture layer between the first flexible substrate and the second flexible substrate; finally, laminating an upper polarizer and a lower polarizer.

2 . The manufacture method of the flexible liquid crystal panel according to claim 1 , comprising steps of:
step 1, providing the first flexible substrate and laminating the first flexible substrate to a glass; step 2, manufacturing the comb pixel electrodes, the gate lines, the data lines, the TFTs and the color filter layer on the first flexible substrate by a microlithography process, and then removing the glass; step 3, providing a flexible carrier, positioning the flexible carrier on a delivery wheel of a roll-to-roll equipment, and two ends of the flexible carrier are respectively rolled to two roll shafts of the roll-to-roll equipment, and a slit nozzle is vertically located right above the flexible carrier, and a UV lamp, which is parallel with the flexible carrier is located at one side of the slit nozzle; step 4, driving the roll shafts and the delivery wheel to rotate the flexible carrier to move along with the slit nozzle toward the UV lamp, and from one roll shaft to the other roll shaft, and continuously coating the mixture of the sealant and the liquid crystal micro capsules on the flexible carrier via the slit nozzle, and meanwhile, implementing UV irradiation with the UV lamp to the sealant for occurring polyreaction and solidification to become a polymeric layer, and the liquid crystal micro capsules are distributed in the polymeric layer to acquire a polymer/liquid crystal mixture layer; the sealant contains polymeric monomers; the liquid crystal micro capsule comprises a hard shell and a plurality of liquid crystal molecules wrapped in the hard shell; step 5, cutting the composite layer of the flexible carrier and the polymer/liquid crystal mixture layer to obtain the second flexible substrate, and a dimension of the second flexible substrate is adaptable for a dimension of the first flexible substrate; step 6, laminating the first flexible substrate and the second flexible substrate to package the polymer/liquid crystal mixture layer between the first flexible substrate and the second flexible substrate; step 7, laminating a lower polarizer on a lower surface of the first flexible substrate, and laminating an upper polarizer on an upper surface of the second flexible substrate; the axis directions of the upper polarizer and the lower polarizer are mutually perpendicular, and respectively tilted relative to the comb pixel electrodes.

3 . The manufacture method of the flexible liquid crystal panel according to claim 2 , wherein the first flexible substrate is a plastic substrate, and the flexible carrier is a plastic carrier, and the second flexible substrate is a plastic substrate.

4 . The manufacture method of the flexible liquid crystal panel according to claim 2 , wherein the comb pixel electrodes are alternately spaced and aligned on the horizontal direction.

5 . The manufacture method of the flexible liquid crystal panel according to claim 2 , wherein the liquid crystal micro capsules appear to be spherical, and the diameters are 20 nm-200 nm.

6 . The manufacture method of the flexible liquid crystal panel according to claim 2 , wherein the axis directions of the upper polarizer and the lower polarizer respectively form a 45 degree include angle and a 135 degree included angle with the comb pixel electrodes.

7 . The manufacture method of the flexible liquid crystal panel according to claim 2 , wherein the polymeric monomer is one or a combination of acrylate and derivatives thereof, methacrylate and derivatives thereof, styrene and derivatives thereof, epoxy resin and aliphatics epoxy curing agent.

8 . A flexible liquid crystal panel, comprising a first flexible substrate, a second flexible substrate oppositely located to the first flexible substrate, a polymer/liquid crystal mixture layer located between the first flexible substrate and the second flexible substrate, a lower polarizer located at a lower surface of the first flexible substrate and an upper polarizer located at a upper surface of the second flexible substrate;
comb pixel electrodes, gate lines, data lines, TFTs and a color filter layer formed on the first flexible substrate; wherein the polymer/liquid crystal mixture layer comprises a polymeric layer and liquid crystal micro capsules distributed in the polymeric layer; the liquid crystal micro capsule comprises a hard shell and a plurality of liquid crystal molecules wrapped in the hard shell; the axis directions of the upper polarizer and the lower polarizer are mutually perpendicular, and respectively tilted relative to the comb pixel electrodes.

9 . The flexible liquid crystal panel according to claim 8 , wherein the first flexible substrate is a plastic substrate, the second flexible substrate is a plastic substrate, and the liquid crystal micro capsules appear to be spherical, and the diameters are 20 nm-200 nm.

10 . The flexible liquid crystal panel according to claim 8 , wherein the comb pixel electrodes are alternately spaced and aligned on the horizontal direction; the axis directions of the upper polarizer and the lower polarizer respectively form a 45 degree include angle and a 135 degree included angle with the comb pixel electrodes.

11 . A flexible liquid crystal panel, comprising a first flexible substrate, a second flexible substrate oppositely located to the first flexible substrate, a polymer/liquid crystal mixture layer located between the first flexible substrate and the second flexible substrate, a lower polarizer located at a lower surface of the first flexible substrate and an upper polarizer located at a upper surface of the second flexible substrate;
comb pixel electrodes, gate lines, data lines, TFTs and a color filter layer formed on the first flexible substrate; wherein the polymer/liquid crystal mixture layer comprises a polymeric layer and liquid crystal micro capsules distributed in the polymeric layer; the liquid crystal micro capsule comprises a hard shell and a plurality of liquid crystal molecules wrapped in the hard shell; the axis directions of the upper polarizer and the lower polarizer are mutually perpendicular, and respectively tilted relative to the comb pixel electrodes; the first flexible substrate is a plastic substrate, the second flexible substrate is a plastic substrate, and the liquid crystal micro capsules appear to be spherical, and the diameters are 20 nm-200 nm; the comb pixel electrodes are alternately spaced and aligned on the horizontal direction; the axis directions of the upper polarizer and the lower polarizer respectively form a 45 degree include angle and a 135 degree included angle with the comb pixel electrodes.

Assignees

• Shenzhen China Star Optoelect
• Shenzhen China Star Optoelectrics Tech Co Ltd

Inventors

• Zhong Xinhui
• Lee Yungjui

Classifications

• G02F1/133528

  Polarisers · CPC title

• G02F2001/136222

  Physics · mapped topic

• G02F1/1334

  based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title