Transflective liquid crystal display device
First Claim
1. A transflective liquid crystal display device which includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates,the liquid crystal display panel including a plurality of sub pixels each of which includes a transmissive portion and a reflective portion,each sub pixel of the plurality of sub pixels including a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, andan electric field being generated between the pixel electrode and the counter electrode thus driving the liquid crystal, whereinthe each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion.
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Accused Products
Abstract
The present invention provides an IPS-type transflective liquid crystal display device in which a contrast is not inverted between a transmissive portion and a reflective portion. The transflective liquid crystal display device includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates, wherein the liquid crystal display panel includes the plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels includes a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field is generated between the pixel electrode and the counter electrode thus driving the liquid crystal. Further, each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion.
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Citations
16 Claims
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1. A transflective liquid crystal display device which includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates,
the liquid crystal display panel including a plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels including a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field being generated between the pixel electrode and the counter electrode thus driving the liquid crystal, wherein the each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion.
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2. A transflective liquid crystal display device which includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates,
the liquid crystal display panel including a plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels including a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field being generated between the pixel electrode and the counter electrode thus driving the liquid crystal, wherein the each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion, and in the inside of the each sub pixel, a potential which is applied to the counter electrode of one of the transmissive portion and the reflective portion is a potential higher than a potential which is applied to the pixel electrode, and a potential which is applied to the counter electrode of another of the transmissive portion and the reflective portion is a potential lower than the potential which is applied to the pixel electrode.
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3. A transflective liquid crystal display device which includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates,
the liquid crystal display panel including a plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels including a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field being generated between the pixel electrode and the counter electrode thus driving the liquid crystal, wherein the each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion, and the transmissive portion has normally-black characteristic which performs a black display in a state that a voltage is not applied, and the reflective portion has normally-white characteristic which performs a white display in a state that a voltage is not applied.
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4. A transflective liquid crystal display device which includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates,
the liquid crystal display panel including a plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels including a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field being generated between the pixel electrode and the counter electrode thus driving the liquid crystal, wherein the each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion, and the counter electrodes are independently driven for every 1 display line.
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5. A transflective liquid crystal display device which includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates,
the liquid crystal display panel including a plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels including a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field being generated between the pixel electrode and the counter electrode thus driving the liquid crystal, wherein the each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion, and assuming that two neighboring display lines are constituted of one display line and another display line, reference voltages which differ from each other are applied to the counter electrodes of the transmissive portions of the respective sub pixels on the one display line and the counter electrodes of the reflective portions of the respective sub pixels on the one display line, and a same reference voltage is applied to the counter electrodes of the reflective portions of the respective sub pixels on the one display line and the counter electrodes of the transmissive portions of the respective sub pixels on the another display line.
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6. A transflective liquid crystal display device which includes a liquid crystal display panel having a pair of substrates and liquid crystal which is sandwiched between the pair of substrates,
the liquid crystal display panel including a plurality of sub pixels each of which includes a transmissive portion and a reflective portion, each sub pixel of the plurality of sub pixels including a pixel electrode which is formed on one substrate out of the pair of substrates and a counter electrode which is formed on the one substrate, and an electric field being generated between the pixel electrode and the counter electrode thus driving the liquid crystal, wherein the each sub pixel is configured such that the pixel electrode is formed in common with respect to the transmissive portion and the reflective portion and the counter electrode is formed independently with respect to the transmissive portion and the reflective portion, and assuming that two neighboring display lines are constituted of one display line and another display line, reference voltages which differ from each other are applied to the counter electrodes of the transmissive portions of the respective sub pixels on the one display line and the counter electrodes of the reflective portions of the respective sub pixels on the one display line, a same reference voltage is applied to the counter electrodes of the reflective portions of the respective sub pixels on the one display line and the counter electrodes of the transmissive portions of the respective sub pixels on the another display line, and the counter electrodes are driven independently for every 1 display line.
Specification