Patent ID: 7145580
Filing Date: 2006-12-05
Classification: G09G

Abstract:
1. A method of providing a transmissive-and-reflective type liquid crystal display device with a gray scale voltage, the method comprising: receiving transmissive mode gray scale data; producing real reflective mode gray scale data corresponding to a first effective range of a reflective mode gray scale voltage using a relation between a second effective range of a transmissive mode gray scale voltage and the transmissive mode gray scale data; extracting an integer part from the real reflective mode gray scale data to produce first reflective mode gray scale data; mixing the first reflective mode gray scale data and temporary reflective mode gray scale data in a predetermined ratio by N-frame period to produce second reflective mode gray scale data, the temporary reflective mode gray scale data being a sum of a first integer and the first reflective mode gray scale data; inserting pseudo gray scale data into the second reflective mode gray scale data to produce a third reflective mode gray scale data, a first number of the pseudo gray scale data being a difference between a second number of a transmissive mode gray scale level and a third number of a reflective mode gray scale level; providing the transmissive and reflective type liquid crystal display device with a transmissive mode gray scale voltage corresponding to the transmissive mode gray scale data when the transmissive and reflective type liquid crystal display device operates in a transmissive mode; and providing the transmissive and reflective type liquid crystal display device with a reflective mode gray scale voltage corresponding to the third reflective mode gray scale data when the transmissive and reflective type liquid crystal display device operates in a reflective mode.