U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Transflective LCD driven by bi-gamma curve

Patent 6806929 Issued on October 19, 2004. Estimated Expiration Date: Icon_subject November 15, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Transflective liquid crystal display device having reflector covering sides of transmissive region asymmetrically and method of manufacturing the same Patent #: 6704081
Issued on: 03/09/2004
Inventor: Ha ,   et al.

Inventors

Application

No. 10294751 filed on 11/15/2002

US Classes:

349/114, Dielectric mirror (i.e., in devices excited other than by photoconductive layer) or transflector349/38, With supplemental capacitor349/113, Reflector349/143, Matrix electrodes349/12, Liquid crystal writing tablet356/484Having light beams of different frequencies (e.g., heterodyning)

Examiners

Primary: Ngo, Huyen

Attorney, Agent or Firm

International Classes

G02F 11343
G02F 11335

Abstract

A transflective LCD. The transflective LCD includes multiple pixels. Each pixel includes a reflective cell and a transmission cell. The reflective cell has a first storage capacitor and a first active device, receiving a first driving voltage and coupling to the first capacitor. The transmission cell has a second storage capacitor and a second active device, receiving a second driving voltage and coupling to the second capacitor. Different from only single driving voltage in conventional transflective LCD, the first driving voltage and the second voltage are generated according to a reflective gamma curve and a transmission gamma curve respectively.

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