PLASTIC FLAT DISPLAY AND METHOD FOR MANUFACTURING SAME

• US 20100195042A1
• Filed: 01/19/2007
• Published: 08/05/2010
• Est. Priority Date: 01/20/2006
• Status: Active Grant

• Current Assignee: Intellectual Discovery Co., Ltd.
• Original Assignee: Image Lab Company Limited
• Inventors: Hwang, Hyun-Ha, Jeong, Seok-Hong
• Granted Patent: US 8,786,819 B2
• Time in Patent Office: Days
• US Class Current: 349/158
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/133553 Reflecting elements associated to illuminating devices G02F1/133605
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/1681 having two or more microcells partitioned by walls, e.g. of microcup type

Abstract

The present invention provides a plastic flat display and a method for manufacturing the same. In a plastic flat display including upper and lower substrates, the lower substrate is formed of an FPCB substrate for supplying an electrical signal to the plastic flat display. Accordingly, a flexible printed circuit board (FPCB) is used in an integrated type to serve as a lower substrate film of the flat display, so that an additional lower substrate is not necessary and the flat display can be implemented with a simple structure, and a method for manufacturing the plastic flat display.

Claims

1. A plastic flat display including upper and lower substrates, wherein the lower substrate is formed of an FPCB substrate for supplying an electrical signal to the plastic flat display.

2. The plastic flat display as claimed in claim 1, wherein the FPCB substrate comprises an electrode serving as a reflection plate for reflecting external light.

3. The plastic flat display as claimed in claim 1, wherein the FPCB substrate has a base film, and the base film is made of polyethyleneterephtalate or polypropylene.

4. The plastic flat display as claimed in any one of claims 1 to 3, wherein the plastic flat display is applied to one or more of a liquid crystal display, an organic EL display and an electronic ink.

5. A plastic flat display for constructing a reflective LCD, comprising:

an upper ITO electrode substrate with a polarizer attached thereto;

a lower FPCB electrode substrate with an inner reflection layer; and

liquid crystals interposed between the upper ITO electrode substrate and the lower FPCB electrode substrate.

6. The plastic flat display as claimed in claim 5, wherein the lower FPCB electrode substrate includes an electrode made of copper, and surface treatment is performed using an electroless silver plating technique to prevent oxidation of the copper.

7. A plastic flat display for constructing a cholesteric LCD, comprising:

an upper ITO electrode substrate;

a lower FPCB electrode substrate with an inner reflection layer; and

cholesteric liquid crystals interposed between the upper ITO electrode substrate and the lower FPCB electrode substrate.

8. A plastic flat display for constructing a guest-host LCD, comprising:

an upper ITO electrode substrate;

a lower FPCB electrode substrate with an inner reflection layer; and

liquid crystals interposed between the upper ITO electrode substrate and the lower FPCB electrode substrate and having a dichroic dye mixed therein.

9. A plastic flat display for constructing a transmissive LCD, comprising:

an upper ITO electrode substrate with a polarizer attached thereto;

a lower FPCB electrode substrate with an inner reflection layer and with a base film made of polyethyleneterephtalate (PET) or polypropylene (PP); and

liquid crystals interposed between the upper ITO electrode substrate and the lower FPCB electrode substrate.

10. The plastic flat display as claimed in claim 9, wherein the states of the liquid crystals are controlled by means of an IPS (In-Plane Switching) or FF (Fringe Field) liquid crystal driving method.

11. A plastic flat display for constructing an organic EL display, comprising:

an upper substrate having an ITO electrode and an emitting material layer; and

a lower FPCB electrode substrate positioned below the upper substrate and having an FPCB electrode for discharging electrons.

12. A plastic flat display for constructing an electronic ink, comprising:

an upper transparent electrode substrate;

a lower FPCB electrode substrate; and

encapsulated particles respectively charged with negative and positive electric charges between the upper transparent electrode substrate and the lower FPCB electrode substrate.

13. A method for manufacturing a plastic flat display, comprising:

a first process of preparing an upper ITO film substrate by bonding a transparent ITO film substrate on a base film, and preparing a lower FPCB substrate;

a second process of patterning the upper ITO film substrate after the first process;

a third process of printing alignment layers on the upper ITO film substrate and the lower FPCB substrate after the second process;

a fourth process of printing a thermosetting sealant on the upper ITO film substrate and distributing spacers on the lower FPCB substrate after the third process;

a fifth process of aligning and coupling the upper ITO film substrate and the lower FPCB substrate with each other through thermal pressing after the fourth process; and

a sixth process of injecting liquid crystals under a vacuum condition into a space between the upper ITO film substrate and the lower FPCB substrate after the fifth process.

14. The method as claimed in claim 13, wherein the third process comprises printing an alignment layer on a gold-plated region exposed in the lower FPCB substrate by means of coating.