Liquid crystal display and driving method thereof
AssigneeLG.Philips LCD Co., Ltd.
InventorByoung Ho Lim
Life of this patent
Estimating the term…
Abstract
A liquid crystal display includes m valid gate lines G1 to Gm arranged in a first direction with first constant intervals between gate lines, n valid data lines arranged in a second direction perpendicular to the valid gate lines with second constant intervals between data lines, and at least one dummy data line at a periphery of and in parallel with the n valid data lines. A method of driving a liquid crystal display is carried out by a general procedure of shorting the dummy data lines with a specific data line or by applying the same driving signals of a specific data line to the dummy data line.
Claims28
A liquid crystal display in a TFT-LCD panel, comprising:
- a first substrate in which a black matrix layer and a color filter layer are stacked sequentially on a first insulating substrate;
- a second substrate on which a gate electrode, a gate insulating layer, at least one valid data line and at least one dummy data line adjacent the at least one valid data line, an active semiconductor layer, source and drain electrodes, and a passivation layer are stacked on a second insulating substrate, wherein the second substrate opposes the first substrate;
- and
- a liquid crystal layer between the first and second substrates, wherein the at least one dummy data line prevents light transmission within a visible angle at an edge of the TFT-LCD panel.
A method of driving a liquid crystal display, the liquid crystal display including a valid data line area in which a plurality of data lines D1 to Dn are formed, areas of a first dummy data line and a second dummy data line formed at left and right sides of the valid data line area, a valid gate line area in which a plurality of gate lines G1 to Gm are formed, and a first dummy gate line formed at one side of the valid gate line area, the method comprising:
- applying a first same driving signal to the first dummy data line and a second data line D2 and a second same driving signal to the second dummy data line and an (n−1)th data line Dn−1;
- and
- applying a pulse waveform synchronized to a waveform applied to the mth gate line Gm to the first dummy gate line.
A liquid crystal display, comprising:
- a gate insulating layer formed on a first insulating substrate;
- a plurality of data lines D1 through Dn, wherein a dummy data line and at least one of the first data line and the nth data line are formed on the gate insulating layer a predetermined interval apart;
- a passivation layer formed on the first insulating substrate including the data lines;
- a transparent conductive layer for applying voltage to the liquid crystal display formed on the passivation layer;
- a black matrix having a space therein patterned on a second insulating substrate;
- and
- a color filter formed on the second insulating substrate including the black matrix, wherein the dummy data line prevents light transmission within a visible angle at an edge of the liquid crystal display.
A method of driving a liquid crystal display, comprising:
- applying the same driving signal to at least one dummy data line and a corresponding data line of a plurality of data lines D1 to Dn;
- wherein the at least one dummy data line includes a first dummy data line and a second dummy data line;
- and
- wherein the applying includes applying the same driving signal to the first dummy data line and a second data line D2 of the plurality of data lines D1 to Dn and applying the same driving signal to the second dummy data line and a (n−1)th data line Dn−1 of the plurality of data lines D1 to Dn.
A method of driving a liquid crystal display, comprising:
- applying a pulse waveform to an mth one of a plurality of gate lines G1 to Gm a dummy gate line in synchrony, wherein the dummy gate line is arranged at a first side of the plurality of gate lines G1 to Gm;
- and
- applying the same driving signal to at least one dummy data line and a corresponding data line of a plurality of data lines D1 to Dn;
- wherein the at least one dummy data line includes a first dummy data line and a second dummy data line;
- and
- wherein the applying includes applying the same driving signal to the first dummy data line and a second data line D2 of the plurality of data lines D1 to Dn and applying the same driving signal to the second dummy data line and a (n−1)th data line Dn−1 of the plurality of data lines D1 to Dn.
Dependencies are inferred from the claim text.