US 8,508,683 B2Granted

Liquid crystal display and panel therefor

AssigneeSamsung Display Co., Ltd.

InventorJang-Kun Song

Life of this patent

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Abstract

A flat panel display having an improved picture quality is disclosed. In on embodiment, a first pixel electrode and a second pixel electrode are formed in each subpixel area. The electrodes enclose an open space (gap) such that their outer boundary has a substantially rectangular shape. The flat panel display may also include a capacitance electrode coupled to the second pixel electrode to form a coupling capacitor. In use, the coupling capacitor operates such that a magnitude of a voltage applied to the first pixel electrode is lower than an applied data voltage, and a magnitude of a voltage applied to the second pixel electrode is higher than an applied voltage. The different voltages operate such that a tilt direction of LC molecules disposed above the first pixel electrode differs from a tilt direction of LC molecules disposed above the second pixel electrode.

Claims9

Dependent claims

A flat panel display, comprising:

a substrate;
a gate line disposed on the substrate;
a signal line extended substantially parallel to the gate line;
a data line intersecting the gate line;
a first sub pixel electrode and a second sub pixel electrode disposed on the substrate;
a first thin film transistor comprising a first terminal connected to the gate line, a second terminal connected to the data line, and a third terminal connected to the first sub pixel electrode;
a second thin film transistor comprising a first terminal connected to the gate line, a second terminal connected to the data line, and a third terminal connected to the second sub pixel electrode;
and
a third thin film transistor comprising a first terminal connected to the signal line, a second terminal connected to the first sub pixel electrode, and a third terminal connected to a coupling electrode;
wherein the coupling electrode does not overlap the first sub pixel electrode and the second sub pixel electrode.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/073,505Filed 28 Mar 2011 · continuation
Priority: KR 2003-5606713 Aug 2003
Published: US 2011/0170032 A114 Jul 2011
Granted: 13 Aug 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

G02F 1/134309
Electrodes: characterised by their geometrical arrangement
G02F 1/133707
Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers: structures for producing distorted electric fields, e.g.…
G02F 1/134336
Characterised by their geometrical arrangement: matrix
G02F 1/136213
Active matrix addressed cells: storage capacitors associated with the pixel electrode

Family

Application10/916,518Parent of this continuation · filed 12 Aug 2004
Application11/682,995Parent of this continuation · filed 7 Mar 2007
Application12/749,761Parent of this continuation · filed 30 Mar 2010
US 2011/0170032 A1Pre-grant publication · published 14 Jul 2011
US 7,944,515 B2Parent of this continuation
US 7,773,169 B2Parent of this continuation
US 7,206,048 B2Parent of this continuation
US 2005/0036091 A1Published application
US 2007/0146600 A1Published application
US 2010/0182528 A1Published application
US 8,508,683 B2This patent

From the US filing history. Foreign family members aren’t listed.