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US 8,570,264 B2Granted
Liquid crystal display apparatus with wide viewing angle
AssigneeSamsung Display Co., Ltd.
InventorsDong-Gyu Kim, Sang-Soo Kim
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Abstract
A liquid crystal display with an improved reference viewing angle is presented. A pixel electrode includes first and second sub-pixel electrodes. A first switching device is connected to the first sub-pixel electrode, one of gate lines, and one of the data lines. A voltage of the second sub-pixel electrode relative to a predetermined voltage is lower than a voltage of the first sub-pixel electrode relative to the predetermined voltage, and an area of the first sub-pixel electrode is smaller than that of the second sub-pixel electrode.
Claims22
A liquid crystal display comprising:
- a pixel electrode comprising a first sub-pixel electrode and a second sub-pixel electrode;
- a first switching device connected to the first sub-pixel electrode;
- a second switching device connected to the second sub-pixel electrode;
- a plurality of gate lines including a first signal line and a second signal line, wherein the first signal line is connected to the first switching device and the second signal line is connected to the second switching device;
- and
- a data line intersecting the gate lines and transmitting data voltages, the data line connected to the first switching device and the second switching device,
- wherein a second voltage applied to the second sub-pixel electrode through the data line during a turn-on period of the second switching device is lower than a first voltage applied to the first sub-pixel electrode through the data line during a turn-on period of the first switching device,
- wherein the turn on period of the first switching device partially overlaps the turn on period of the second switching device,
- wherein a time duration of a gate-on voltage applied to the first signal line is longer than a time duration of a gate-on voltage applied to the second signal line, and
- wherein a time duration of the second voltage applied to the data line is longer than a time duration of the first voltage applied to the data line.
7 more elements
A liquid crystal display comprising:
- a pixel comprising a first liquid crystal capacitor and a second liquid crystal capacitor and first and second switching elements,
- wherein the first liquid crystal capacitor comprises a first liquid crystal portion disposed between a common electrode and a first sub-pixel electrode, and the second liquid crystal capacitor comprises a second liquid crystal portion disposed between the common electrode and a second sub-pixel electrode,
- wherein the first switching element is connected to a data line and the first sub-pixel electrode, and the second switching element is connected to the data line and the second sub-pixel electrode, wherein the first switching element is connected to a first gate line and the data line, and the second switching element is connected to a second gate line and the data line,
- wherein a first sub-pixel voltage applied to the first liquid crystal portion through the data line during a turn-on period of the first switching element is larger than a second sub-pixel voltage applied to the second liquid crystal portion through the data line during a turn-on period of the second switching element,
- wherein the turn on period of the first switching element overlaps the turn on period of the second switching element,
- wherein the turn on period of the first switching element is longer than the turn on period of the second switching element, and
- wherein a time duration of the second sub-pixel voltage applied to the data line is longer than a time duration of the first sub-pixel voltage applied to the data line.
4 more elements
Dependencies are inferred from the claim text.