LCD with flexible connecting means to hard transparent circuit substrate

• US 6,774,971 B2
• Filed: 04/10/2003
• Issued: 08/10/2004
• Est. Priority Date: 06/08/2001
• Status: Expired due to Fees

• Current Assignee: Nanox, Inc.
• Original Assignee: Nanox, Inc.
• Inventors: Ohta, Akihiko, Shigeeda, Akira, Shirato, Yasuyuki, Kowata, Hideki
• Primary Examiner(s): Nguyen, Dung T.
• Assistant Examiner(s): SCHECHTER, ANDREW M
• Application Number:
  US10/412,389
• Publication Number:
  US 20030174272A1
• Time in Patent Office: 488 Days
• Field of Search: 349/149, 349/150, 361/739
• US Class Current: 349/150
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels

Abstract

With the embodiment of the present invention, a liquid crystal display can be produced at a low cost, which employs the COG technology, saves installation space, mounts LSIs, and, after the LSIs are mounted, can visibly check and inspect the mounted state thereof (that is, electrically connected states thereof) and lighting of the image displaying portion. The liquid crystal display is provided with a liquid crystal displaying portion 11 in which a surface glass substrate 9 having an electrode secured therein and a rear glass substrate 10 having a transparent electrode opposite thereto provided therein are overlapped so that both of the substrates 9 and 10 are opposed to each other, and liquid crystal is sealed in pixel areas between the substrates 9 and 10; and an FPC 7 that is provided with a circuit substrate portion 7 including a LSI 5 which is incorporated on the surface of the glass substrate 3 having a transparent conductive electrode 2 provided therein and is connected electrically to the electrodes, and electrically connects respective electrodes of the liquid crystal displaying portion 11 and circuit substrate portion 6, wherein the FPC 7 is folded over to overlap the liquid crystal displaying portion 11 and the circuit substrate portion 6.

Claims

1. A liquid crystal display comprising:

a liquid crystal displaying portion in which a first substrate having a transparent pixel electrode provided thereon and a second substrate having a transparent opposed pixel electrode provided thereon overlap each other so that both said electrodes are disposed so as to be opposed to each other, and liquid crystal is sealed in a pixel area between said first substrate and said second substrate;

a circuit substrate portion that is mounted on a surface of a hard transparent substrate having a transparent conductive electrode provided thereon; and

is provided with integrated circuit chips connected electrically to said transparent conductive electrode; and

flexible connecting means for electrically connecting the transparent pixel electrode of said liquid crystal displaying portion with the transparent conductive electrode of said circuit substrate portion;

wherein said liquid crystal displaying portion and said circuit substrate portion are folded over at a middle part of said flexible connecting means so as to overlap each other.

2. The liquid crystal display as set forth in claim 1, wherein the surface on which the integrated circuit chips of said hard transparent substrate is disposed so as to face said liquid crystal displaying portion.

3. The liquid crystal display as set forth in claim 1, wherein said flexible connecting means is any one of a flexible printed circuit (FPC), a heat seal, a flexible flat cable (FFC) and an anisotropic conductive rubber connector.

4. The liquid crystal display as set forth in any one of claims 1, 3, and 4, wherein any one of either said first substrate, second substrate and hard transparent substrate is composed of a transparent glass plate or transparent synthetic resin plate.

5. The liquid crystal display as set forth in claim 4, wherein the thicknesses of said first substrate, said second substrate and said hard transparent substrate are the same.

6. The liquid crystal display as set forth in claim 5, wherein said hard transparent substrate is coated with an infrared ray shielding film at a surface other than that on which the integrated circuit chips of said hard transparent substrate are mounted.

7. A liquid crystal display comprising:

a liquid crystal displaying portion in which a first substrate having a transparent pixel electrode provided thereon and a second substrate having a transparent opposed pixel electrode provided thereon overlap each other so that both said electrodes are disposed so as to be opposed to each other, and liquid crystal is sealed in a pixel area between said first substrate and said second substrate;

a circuit substrate portion that is mounted on a surface of a hard transparent substrate having a transparent conductive electrode provided thereon; and

is provided with integrated circuit chips connected electrically to said transparent conductive electrode; and

flexible connecting means for electrically connecting the transparent pixel electrode of said liquid crystal displaying portion with the transparent conductive electrode of said circuit substrate portion;

wherein the thicknesses of said first substrate, said second substrate and said hard transparent substrate are the same.

8. The liquid crystal display as set forth in claim 7 wherein any one of either said first substrate, second substrate and hard transparent substrate is composed of a transparent glass plate or transparent synthetic resin plate.

9. The liquid crystal display as set forth in any one of claim 7 or 8, wherein said hard transparent substrate is coated with an infrared ray shielding film at a surface other than that on which the integrated circuit chips of said hard transparent substrate are mounted.