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US 6,888,600 B2Granted
Display panel for a display device
AssigneeInternational Business Machines Corporation
InventorsHidehisa Shimizu, Kaoru Kusafuka, Mitsuru Ikezaki, Asao Terukina
Life of this patent
Estimating the term…
Abstract
In each pixel region of a liquid crystal panel of an in plane switching mode, a pixel electrode is made to have a two-layer structure composed of a lower pixel electrode located in the same layer as a signal line and of an upper pixel electrode located in the same layer as a common electrode. Moreover, an electrode portion of the lower pixel electrode is made closer to the signal line than the upper pixel electrode. Furthermore, the signal line, a gate line and the common electrode are arranged in an overlapped manner.
Claims20
A display panel having liquid crystal filled between two substrates, comprising:
- gate lines and signal lines arrayed in a matrix type on one of said substrates;
- common electrodes arranged above said gate lines and said signal lines with an insulating layer interposed therebetween, said common electrodes being arranged immediately above said signal lines;
- and
- pixel electrodes for generating electric fields with said common electrodes,
- wherein each of said pixel electrodes is provided with a first electrode and a second electrode arranged above the first electrode with an insulating layer interposed therebetween, said first and second electrodes being electrically connected to each other.
2 more elements
A display panel having liquid crystal filled between two substrates, comprising:
- gate lines and signal lines arrayed in a matrix type on one of said substrates;
- common electrodes arranged above said gate lines and said signal lines with an insulating layer interposed therebetween, said common electrodes being arranged at both sides of a pixel region defined by said gate lines and said signal lines, said common electrodes being arranged immediately above said signal lines;
- and
- pixel electrodes, each being arranged in an intermediate position between two of said common electrodes adjacent to each other,
- wherein each of said pixel electrode is provided with first electrode arranged in the same layer as said common electrodes and second electrode arranged in the same layer as said signal lines, said second electrode being electrically connected to said first electrode.
2 more elements
A display panel, comprising:
- pixel electrodes for applying drive voltages to optical display elements;
- common electrodes for generating electric fields in a direction along a substrate surface with said pixel electrodes;
- switching elements for controlling drive voltages to said pixel electrodes;
- gate lines for transmitting scanning signals to said switching elements;
- signal lines for transmitting display signals to said switching elements;
- and
- shield electrodes provided in positions closer to said signal lines than said pixel electrodes, said shield electrodes being set at potentials electrically equal to those of said pixel electrodes, said shield electrodes being in a different plane than said pixel electrodes.
4 more elements
A display device, comprising:
- a display panel in which an optical display element is arranged between two substrates;
- and
- a drive circuit for driving said display panel,
- wherein said display panel comprises:
- a plurality of pixel regions defined by signal lines and gate lines arrayed in a matrix type;
- common electrodes arranged on outer peripheral portions of said pixel regions, said common electrodes covering said signal lines and said gate lines;
- pixel electrodes for generating electric fields in a direction along surfaces of said substrates with said common electrodes in order to drive the optical display element;
- and
- shield portions for shielding electric fields from said signal lines, and
- said drive circuit comprises:
- a signal line drive circuit for supplying display signals to said pixel electrodes via said signal lines;
- and
- a gate line drive circuit for supplying scanning signals via said gate lines in order to control drive voltages to said pixel electrodes.
10 more elements
A display panel having liquid crystal filled between two substrates, comprising:
- gate lines and signal lines arrayed in a matrix type on one of said substrates;
- common electrodes arranged above said gate lines and said signal lines with an insulating layer interposed therebetween, said common electrodes being arranged immediately above said gate lines;
- and
- pixel electrodes for generating electric fields with said common electrodes,
- wherein each of said pixel electrodes is provided with a first electrode and a second electrode arranged above the first electrode with an insulating layer interposed therebetween, said first and second electrodes being electrically connected to each other.
2 more elements
A display panel having liquid crystal filled between two substrates, comprising:
- gate lines and signal lines arrayed in a matrix type on one of said substrates;
- common electrodes arranged above said gate lines and said signal lines with an insulating layer interposed therebetween, said common electrodes being arranged at both sides of a pixel region defined by said gate lines and said signal lines, said common electrodes being arranged immediately above said gate lines;
- and
- pixel electrodes, each being arranged in an intermediate position between two of said common electrodes adjacent to each other,
- wherein each of said pixel electrode is provided with first electrode arranged in the same layer as said common electrodes and second electrode arranged in the same layer as said signal lines, said second electrode being electrically connected to said first electrode.
2 more elements
Dependencies are inferred from the claim text.