Liquid crystal display device

• US 4,896,946 A
• Filed: 11/30/1988
• Issued: 01/30/1990
• Est. Priority Date: 05/13/1985
• Status: Expired due to Term

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Uehara, Kiyohiro, Niitsuma, Ryo, Suzuki, Takumi
• Primary Examiner(s): Miller, Stanley D.
• Assistant Examiner(s): Pellman Gross, Anita
• Application Number:
  US07/277,500
• Time in Patent Office: 426 Days
• Field of Search: 350/334, 350/331 R, 350/344, 350/343, 350/336, 439/66, 439/86, 439/91
• US Class Current: 349/150
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals

Abstract

A liquid crystal display device having a circuit board and a liquid crystal display cell mounted on the circuit board. The liquid crystal display cell includes substrates each formed of a flexible film. The liquid crystal display cell has an electrode terminal section, and the circuit board has an outer electrode terminal section connected by a connector to the electrode terminal section of the liquid crystal display cell. The connector comprises a film of anisotropic electric conductivity which serves to electrically interconnect the electrode terminal section of the liquid crystal cell and the outer electrode terminal section of the circuit board and also to mechanically secure the liquid crystal display cell to the circuit board.

Claims

1. A liquid crystal display device comprising:

a circuit board having an outer electrode terminal section for a signal wire;

a liquid crystal display cell including a flexible film used as an upper substrate and a lower substrate and having an electrode terminal section for a signal wire; and

said upper substrate having projecting edges extending beyond corresponding edges of said lower substrate, and said electrode terminal section formed on the lower side of the upper substrate of the liquid crystal cell and said outer electrode terminal section of the circuit board being connected by a film connector of anisotropic conductivity and a flexible printed circuit substrate by applying heat and pressure thereto, so that said electrode terminal section and said outer electrode terminal section are interconnected and said liquid crystal cell is secured to said circuit board.