Method for packaging a liquid crystal panel and a liquid crystal panel package

• US 5,847,782 A
• Filed: 10/06/1997
• Issued: 12/08/1998
• Est. Priority Date: 10/04/1996
• Status: Expired due to Term

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Imazeki, Yoshikatsu, Hinata, Shoji
• Primary Examiner(s): Sikes, William L.
• Assistant Examiner(s): Hollingshead, Robert J.
• Application Number:
  US08/944,870
• Time in Patent Office: 428 Days
• Field of Search: 349/58, 349/158, 349/56, 349/187
• US Class Current: 349/58
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133311 Environmental protection, e.g. against dust or humidity

Abstract

A method is described for packaging a liquid crystal panel device that includes a pair of plastic substrates and a liquid crystal material encapsulated therebetween. The method includes the steps of enveloping the liquid crystal panel device by a container substantially impermeable to gases and containing an undesirable gas, removing the undesirable gas from the container and hermetically sealing the liquid crystal panel device in the container after removing the undesirable gas therefrom. A liquid crystal panel package is also described which includes at least one liquid crystal panel device, a packaging box and a container. The packaging box is sized to receive the liquid crystal panel device and is fabricated from a gas permeable material. The container is fabricated from a gas impermeable material and contains an undesirable gas. The container is sized to contain the packaging box with the liquid crystal panel device received therein. After the undesirable gas is removed from the container, the container contains the packaging box and the liquid crystal panel device substantially free of the undesirable gas in a hermetically sealed state.

Claims

1. A method for packaging a liquid crystal panel device having a pair of plastic substrates and a liquid crystal material encapsulated therebetween, the method comprising the steps of:

enveloping the liquid crystal panel device with a container substantially impermeable to gases and containing an undesirable gas;

removing the undesirable gas from the container; and

hermetically sealing the liquid crystal panel device in the container after removing the undesirable gas from the container.

2. A method according to claim 1, further comprising the step of supplying a desirable gas into the container before the step of hermetically sealing the container and after the step of removing the undesirable gas from the container.

3. A method according to claim 2, wherein the desirable gas is one of nitrogen, xenon and krypton.

4. A method according to claim 2, wherein the desirable gas includes a plurality of gas molecules with each gas molecule having a molecular diameter sufficiently large so that a single gas molecule is inhibited from migrating through a selected one of a plurality of gas-permeating pores formed in the plastic substrates.

5. A method according to claim 2, wherein the desirable gas has a solubility coefficient less than oxygen.

6. A method according to claim 2, wherein the desirable gas includes a plurality of gas molecules with each gas molecule having a solubility coefficient less than oxygen and a molecular diameter sufficiently large so that a single gas molecule is inhibited from migrating through a selected one of a plurality of gas-permeating pores formed in the plastic substrates.

7. A method according to claim 1, wherein the step of removing the undesirable gas from the container creates one of a vacuum condition in which a container pressure measured inside the container after the step of hermetically sealing the container is zero and a depressurization condition in which the container pressure is lower than an ambient pressure measured externally of the container.

8. A liquid crystal panel package, comprising:

at least one liquid crystal panel device with each liquid crystal panel device including a pair of plastic substrates and a liquid crystal material encapsulated therebetween;

a packaging box sized to receive the at least one liquid crystal panel device and fabricated from a gas permeable material; and

a container fabricated from a gas impermeable material and containing an undesirable gas, the container sized to contain the packaging box with the liquid crystal panel device received therein so that, after the undesirable gas is removed from the container, the container contains the packaging box and the liquid crystal panel device substantially free of the undesirable gas in a hermetically sealed state.

9. A liquid crystal panel package according to claim 8, wherein the liquid crystal panel device is one of a liquid crystal panel and a liquid crystal display.

10. A liquid crystal panel package according to claim 8, after the undesirable gas is removed from the container and the container contains the packaging box and the liquid crystal panel device in the hermetically sealed state, the container is in one of a vacuum condition in which a container pressure measured inside the container when hermetically sealed is zero and a depressurization condition in which the container pressure is lower than an ambient pressure measured externally of the container.

11. A liquid crystal panel package according to claim 10, wherein when the container is in the depressurization condition, the container contains a desirable gas.

12. A liquid crystal panel package according to claim 11, wherein the desirable gas is one of nitrogen, xenon and krypton.

13. A liquid crystal panel package according to claim 11, wherein the desirable gas includes a plurality of gas molecules with each gas molecule having a molecular diameter sufficiently large so that a single gas molecule is unable to migrate through a selected one of a plurality of gas-permeating pores formed in the plastic substrates of the liquid crystal panel device.

14. A liquid crystal panel package according to claim 11, wherein the desirable gas has a solubility coefficient less than oxygen.

15. A liquid crystal panel package according to claim 11, wherein the desirable gas includes a plurality of gas molecules with each gas molecule having a solubility coefficient less than oxygen and a molecular diameter sufficiently large so that a single gas molecule is unable to migrate through a selected one of a plurality of gas-permeating pores formed in the plastic substrates of the liquid crystal panel device.

16. A liquid crystal panel package according to claim 8, further comprising a pallet housing having at least one cavity formed therein and sized to receive the at least one liquid crystal panel device, said pallet sized to be received by the packaging box.