Liquid crystal display device

Patent metadata

Field	Value
Publication number	US-10437119-B2
Application number	US-201815928718-A
Country	US
Kind code	B2
Filing date	Mar 22, 2018
Priority date	Mar 23, 2017
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A liquid crystal display device includes: a first display panel; and a second display panel opposing to the first display panel. Each of the first and second display panel includes a plurality of source lines, a plurality of gate lines, a plurality of thin film transistors, and a plurality of pixel electrodes electrically connected to corresponding one of the thin film transistors. In a second display panel, at least two thin film transistors are electrically connected to a same second source line and a same second gate line.

First claim

What is claimed is:

1. A liquid crystal display device comprising:
a first display panel that includes a plurality of first source lines extending in a first direction and a plurality of first gate lines extending in a second direction different from the first direction; and
a second display panel opposing the first display panel that includes a plurality of second source lines extending in the first direction and a plurality of second gate lines extending in the second direction, wherein
each of the first display panel and the second display panel includes a plurality of thin film transistors, and a plurality of pixel electrodes of which each is electrically connected to a corresponding one of the plurality of thin film transistors, and
in the second display panel, at least two thin film transistors of the plurality of thin film transistors are electrically connected to a same second source line among the plurality of second source lines and a same second gate line among the plurality of second gate lines.

2. The liquid crystal display device according to claim 1 , wherein
the plurality of thin film transistors of the first display panel include first thin film transistors, the plurality of pixel electrodes of the first display panel include first pixel electrodes that are electrically connected to a corresponding one of the first thin film transistors,
each of a plurality of first pixels are defined by a driving area of a corresponding one of the plurality of first pixel electrodes in the first display panel,
the plurality of thin film transistors of the second display panel include second thin film transistors and third thin film transistors, the plurality of pixel electrodes of the second display panel include second pixel electrodes that are electrically connected to a corresponding one of the second thin film transistors and third pixel electrodes that are electrically connected to a corresponding one of the third thin film transistors,
each of a plurality of second pixels are defined by a driving area of a corresponding one of the plurality of second pixel electrodes in the second display panel,
each of a plurality of third pixels are defined by a driving area of a corresponding one of the plurality of third pixel electrodes in the second display panel,
the plurality of first pixels includes a plurality of first color pixels corresponding to a first color, a plurality of second color pixels corresponding to a second color different from the first color, and a plurality of third color pixels corresponding to a third color different from the first color and the second color,
a first pixel group that includes one first color pixel of the plurality of first color pixels, one second color pixel of the plurality of second color pixels and one third color pixel of the plurality of third color pixels overlaps with a second pixel group that includes one second pixel of the plurality of second pixels and one third pixel of the plurality of third pixels in planar view, and
one second thin film transistor of the plurality of second thin film transistors and one third thin film transistor of the plurality of third thin film transistors are electrically connected to a same second source line of the plurality of second source lines and a same second gate line of the plurality of second gate lines.

3. The liquid crystal display device according to claim 2 , wherein
each of the plurality of first color pixels, each of the plurality of second color pixels and each of the plurality of third color pixels are arranged in the second direction, and
each of the plurality of second pixels and each of the plurality of third pixels are arranged in the first direction or the second direction.

4. The liquid crystal display device according to claim 2 , wherein
the thin film transistors of the second display panel further include a plurality of fourth thin film transistors and a plurality of fifth thin film transistors, a plurality of fourth pixel electrodes of which each is electrically connected to a corresponding one of the plurality of fourth thin film transistors, and a plurality of fifth pixel electrodes of which each is electrically connected to a corresponding one of the plurality of fifth thin film transistors,
each of a plurality of fourth pixels are defined by a driving area of a corresponding one of the plurality of fourth pixel electrodes in the second display panel,
each of a plurality of fifth pixels are defined by a driving area of a corresponding one of the plurality of fifth pixel electrodes in the second display panel,
the second pixel group includes one of the plurality of fourth pixels and one of the plurality of fifth pixels in addition to one of the plurality of second pixels and one of the plurality of third pixels, and
one second pixel electrode of the plurality of second pixel electrodes, one third pixel electrode of the plurality of third pixel electrodes, one fourth pixel electrode of the plurality of fourth pixel electrodes and one fifth pixel electrode of the plurality of fifth pixel electrodes are electrically connected to a same second gate line and a same second source line.

5. The liquid crystal display device according to claim 1 , wherein
the thin film transistors of the first display panel include a plurality of first thin film transistors, the pixel electrodes of the first display panel include first pixel electrodes that are electrically connected to a corresponding one of the first thin film transistors,
each of a plurality of first pixels are defined by a driving area of a corresponding one of the plurality of first pixel electrodes in the first display panel,
the thin film transistors of the second display panel include a plurality of second thin film transistors and a plurality of third thin film transistors,
each of the plurality of second pixel electrodes is electrically connected to a corresponding one of the plurality of second thin film transistors and a corresponding one of the plurality of third thin film transistors,
each of a plurality of second pixels are defined by a driving area of a corresponding one of plurality of second pixel electrodes in the second display panel, and
one second thin film transistor of the plurality of second thin film transistors and one third thin film transistor of the plurality of third thin film transistors are electrically connected to a same second source line and a same second gate line.

6. The liquid crystal display device according to claim 5 , wherein
the plurality of first pixels includes a plurality of first color pixels corresponding to a first color, a plurality of second color pixels corresponding to a second color different from the first color, and a plurality of third color pixels corresponding to a third color different from the first color and the second color, and
a first pixel group that includes one first color pixel of the plurality of first color pixels, one second color pixel of the plurality of second color pixels and one third color pixel of the plurality of third color pixels overlaps with the second pixel in planar view.

Assignees

• Panasonic Liquid Crystal Displ

Inventors

• Mori Ikuko
• Nakagawa Teruhisa
• Tsuda Kazuhiko
• Tanaka Katsuji

Classifications

• G02F1/13471

  in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells (G02F1/13475 takes precedence) · CPC title

• G09G2330/10

  Dealing with defective pixels · CPC title

• G09G3/3648

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G02F1/136213

  Storage capacitors associated with the pixel electrode · CPC title

• G02F1/13624

  having more than one switching element per pixel · CPC title