Liquid crystal display device
AssigneePanasonic Liquid Crystal Display Co., Ltd.
InventorKikuo Ono
Life of this patent
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Abstract
A liquid crystal display device includes a lower electrode and a plurality of upper electrodes opposed to the lower electrode formed in the first substrate. At least one first upper electrode and at least one second upper electrode of the plurality of upper electrodes are formed in each of the plurality of pixels. Each of the first upper electrodes has a plurality of slits that extend in a first direction, each of the second upper electrodes has a plurality of slits that extend in a second direction which is different from the first direction, and the first and second upper electrodes are electrically isolated from each other.
Claims15
A liquid crystal display device comprising:
- a first substrate;
- a second substrate;
- a liquid crystal layer interposed between the first and second substrates, wherein the first substrate, the second substrate and the liquid crystal layer form a plurality of pixels arranged in a matrix, each of the plurality of pixels including a plurality of sub-pixels;
- a lower electrode formed in the first substrate;
- a plurality of upper electrodes opposed to the lower electrode and formed between the lower electrode and the liquid crystal layer;
- a plurality of thin film transistors each connecting to one of the plurality of upper electrodes;
- and
- a temperature sensor that detects an ambient temperature, wherein
- at least one first upper electrode and at least one second upper electrode of the plurality of upper electrodes are formed in each of the plurality of pixels,
- each of the first upper electrodes has a plurality of slits that extend in a first direction,
- each of the second upper electrodes has a plurality of slits that extend in a second direction which is different from the first direction,
- the first and second upper electrodes are electrically isolated from each other,
- when the detected ambient temperature is equal to or higher than a predetermined temperature, data voltages based on an input signal are supplied to the first and second upper electrodes, and
- when the detected ambient temperature is lower than the predetermined temperature, data voltages based on the input signal are supplied to the first upper electrodes and a predetermined voltage irrespective of the input signal is supplied to the second upper electrodes.
A liquid crystal display device comprising:
- a first substrate;
- a second substrate;
- and
- a liquid crystal layer interposed between the first and second substrates, wherein the first substrate, the second substrate and the liquid crystal layer form a plurality of pixels arranged in a matrix, each of the pixels including at least a white sub-pixel having a non-colored color filter and a non-white sub-pixel having a colored color filter,
- a common electrode formed in the first substrate;
- a plurality of pixel electrodes including first pixel electrodes and second pixel electrodes opposed to the common electrode and formed between the common electrode and the liquid crystal layer;
- and
- a temperature sensor that detects an ambient temperature, wherein
- the second pixel electrodes are located in the white sub-pixels and have a plurality of slits that extend in a first direction,
- the first pixel electrodes are located in the non-white sub-pixels and have a plurality of slits that extend in a second direction which is different than the first direction,
- the slits of each of the first pixel electrodes are open-ended at one end, and the slits of each of the second pixel electrodes are surrounded by the respective second pixel electrode,
- when the detected ambient temperature is equal to or higher than a predetermined temperature, the white sub-pixels and the non-white sub-pixels display an image based on an input signal, and
- when the detected ambient temperature is lower than the predetermined temperature, the non-white sub-pixels display an image based on the input signal and the white sub-pixels display a predetermined image irrespective of the input signal.
Dependencies are inferred from the claim text.