US 8,941,572 B2 · Liquid crystal panel and liquid crystal display device having the same

Abstract

A liquid crystal panel with an improved picture-quality and an LCD device having the same are disclosed. The liquid crystal panel and the LCD device allows a distance between a pixel electrode and a data line not connected to a thin film transistor and another distance between the pixel electrode and another data line to be asymmetrically formed within a single pixel region. Accordingly, the vertical cross-talk can be minimized, and furthermore picture-quality can be improved.

Drawings

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Drawings

Claims11

Dependent claims

A liquid crystal panel comprising:

a plurality of odd-numbered gate lines and even-numbered gate lines;
a plurality of odd-numbered data lines and even-numbered data lines;
the plurality of the data lines crossing the plurality of the gate lines to define pixel regions;
odd-numbered thin film transistors TFT connected to the odd-numbered gate lines are connected to odd-numbered data lines,
even-numbered thin film transistors TFT connected to odd-numbered gate lines are connected to even-numbered data lines;
and
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered the thin film transistors TFT;
and formed to partially overlap with the even-numbered data lines;
wherein the odd-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered the thin film transistors TFT and formed to partially overlap with the odd-numbered data lines;
wherein the even-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
odd-numbered thin film transistors TFT connected to the even-numbered gate lines are connected to even-numbered data lines,
even-numbered thin film transistors TFT connected to even-numbered gate lines are connected to odd-numbered data lines;
and
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered thin film transistors TFT and form a protrusion to partially overlap with the odd-numbered data lines and a cut-away at the bottom to avoid overlapping with the odd-numbered thin film transistors TFT;
wherein the odd-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered thin film transistors TFT and form a protrusion to partially overlap with the even-numbered data lines by the same amount as the protrusion of the odd-numbered pixel electrodes partially overlapping with the odd numbered data lines, wherein the even-numbered pixel electrodes comprise a cut-away at the bottom to avoid overlapping with the even-numbered thin film transistors TFT,
wherein the even-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
wherein capacitors formed between the pixel electrodes and the data lines not overlapped with the pixel electrodes have a smaller capacitance than that of capacitors formed between the pixel electrodes and the data line partially overlapped with the pixel electrodes,
wherein the odd-numbered data line formed on the left of the odd-numbered pixel electrodes and the even-numbered data line formed on the right of the odd-numbered pixel electrodes are symmetrically arranged at the same distance.

17 more elements

A liquid crystal display device comprising:

a plurality of odd-numbered gate lines and even-numbered gate lines;
a plurality of odd-numbered data lines and even-numbered data lines;
the plurality of the data lines crossing the plurality of the gate lines to define pixel regions;
odd-numbered thin film transistors TFT connected to the odd-numbered gate lines are connected to odd-numbered data lines,
even-numbered thin film transistors TFT connected to odd-numbered gate lines are connected to even-numbered data lines;
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered the thin film transistors TFT and formed to partially overlap with the even-numbered data lines;
wherein the odd-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered the thin film transistors TFT and formed to partially overlap with the odd-numbered data lines;
wherein the even-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
odd-numbered thin film transistors TFT connected to the even-numbered gate lines are connected to even-numbered data lines,
even-numbered thin film transistors TFT connected to even-numbered gate lines are connected to odd-numbered data lines;
and
odd-numbered pixel electrodes electrically connected to a drain electrode of the odd-numbered thin film transistors TFT and form a protrusion to partially overlap with the odd-numbered data lines and a cut-away at the bottom to avoid overlapping with the odd-numbered thin film transistors;
wherein the odd-numbered pixel electrodes are not formed to overlap with the even-numbered data lines;
even-numbered pixel electrodes electrically connected to a drain electrode of the even-numbered thin film transistors TFT and form a protrusion to partially overlap with the even-numbered data lines by the same amount as the protrusion of the odd-numbered pixel electrodes partially overlapping with the odd numbered data lines, wherein the even-numbered pixel electrodes comprise a cut-away at the bottom to avoid overlapping with the even-numbered thin film transistors TFT,
wherein the even-numbered pixel electrodes are not formed to overlap with the odd-numbered data lines;
a gate driver applying a scan signal to the plurality of the gate lines;
and
a data driver supplying the plurality of odd-numbered data lines and even-numbered data lines with video signals of different polarities,
wherein capacitors formed between the pixel electrodes and the data lines not overlapped with the pixel electrodes have a smaller capacitance than that of capacitors formed between the pixel electrodes and the data line partially overlapped with the pixel electrodes,
wherein the odd-numbered data line formed on the left of the odd-numbered pixel electrodes and the even-numbered data line formed on the right of the odd-numbered pixel electrodes are symmetrically arranged at the same distance.

18 more elements

Dependencies are inferred from the claim text.

Description6,238 words

Summary1,116 words

#This application claims priority under 35 U.S.C. 119 to Korean Patent Application No. 10-2008-0093152, filed on Sep. 23, 2008, which is hereby incorporated by reference in its entirety.

#1. Field of the Disclosure

#This disclosure relates to a liquid crystal display (LCD) device, and more particularly to a liquid crystal panel improving picture-quality through the minimization of vertical cross-talk phenomenon, and an LCD device having the same.

Brief description of the drawings12 figures

#The accompanying drawings, which are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the disclosure. In the drawings:

#FIG. 1 is a view showing an LCD device according to an embodiment of the present disclosure;

#FIG. 2 is a view showing a circuitry of portion “A” in FIG. 1;

Detailed description4,859 words

#Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. These embodiments introduced hereinafter are provided as examples in order to convey their spirits to the ordinary skilled person in the art. Therefore, these embodiments might be embodied in a different shape, so are not limited to these embodiments described here. Also, the size and thickness of the device might be expressed to be exaggerated for the sake of convenience in the drawings. Wherever possible, the same reference numbers will be used throughout this disclosure including the drawings to refer to the same or like parts.

#FIG. 1 is a view showing an LCD device according to an embodiment of the present disclosure. As shown in FIG. 1, the LCD device of the present embodiment includes a liquid crystal panel 102 on which liquid crystal cells are arranged in a matrix shape, as well as a gate driver 104 for driving gate lines GL1˜GLn on the liquid crystal panel 102, and a data driver 106 for driving data lines DL1˜DLm on the liquid crystal panel 102.

#The plural gate lines GL1˜GLn and the plural data lines DL1˜DLm on the liquid crystal panel 102 cross each other and define a plurality of pixel regions. The pixel regions each include a thin film transistor TFT.

Facts

Application

12/461,773Filed 24 Aug 2009

Priority

KR 10-2008-009315223 Sep 2008

Published

US 2010/0073273 A125 Mar 2010

Granted

27 Jan 2015

Term ends

6 Jan 2031

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 500 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification2 codes

G02F 1/136286
Active matrix addressed cells: wiring, e.g. gate line, drain line
G02F
Optical devices or arrangements for the control of light by modification of

Timeline

23 Sep 2008Priority claimedKR 10-2008-0093152
24 Aug 2009Application filedUS 12/461,773
24 Aug 2009Assigned to LG Display Co., Ltd.assignment of assignor's interest
25 Mar 2010PublishedUS 2010/0073273 A1
27 Jan 2015GrantedUS 8,941,572 B2
7 Jun 2025Assigned to Samsung Display Co., Ltd.assignment of assignor's interest
12 Oct 2026TodayWithin its term
6 Jan 2031Term endsEstimated, includes 500 days of adjustment

Liquid crystal panel and liquid crystal display device having the same

Life of this patent

Liquid crystal panel and liquid crystal display device having the same

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims11

Description6,238 words

Drawings

Classification2 codes

Life of this patent

Description6,238 words