Multi-domain vertical alignment liquid crystal display having dielectric medium with nonuniform thickness
View Patent ↗An exemplary MVA LCD ( 2 ) includes a first substrate ( 21 ), a second substrate ( 22 ), and a liquid crystal layer ( 23 ) interposed between the two substrates. A common electrode ( 29 ) and protrusions ( 211 ) are formed at an inner side of the first substrate in order. Gate electrodes ( 221 ) and pixel electrodes ( 222 ) are formed on an inner side of the second substrate. A patterned gate insulating layer ( 223 ) is formed at the second substrate. The patterned gate insulating layer covers the gate electrodes, and a part of each pixel electrode.
1. A multi-domain vertical alignment (MVA) liquid crystal display (LCD), comprising:
a first substrate;
a common electrode formed at an inner side of the first substrate;
a plurality of protrusions formed on the common electrode;
a second substrate parallel to the first substrate;
a liquid crystal layer between the two substrates;
a plurality of gate electrodes and pixel electrodes formed at an inner side of the second substrate; and
a patterned gate insulating layer formed at the inner side of the second substrate, the patterned gate insulating layer covering the gate electrodes, and a part of each pixel electrode.
2. The MVA LCD as claimed in claim 1 , wherein the pixel electrodes comprise a plurality of recesses corresponding to the plurality of protrusions.
3. The MVA LCD as claimed in claim 2 , wherein a passivation layer is formed on the thin film transistors and the pixel electrodes.
4. The MVA LCD as claimed in claim 3 , further comprising a first alignment film formed on the common electrode and the protrusions.
5. The MVA LCD as claimed in claim 4 , further comprising a second alignment film formed on the passivation layer.
6. The MVA LCD as claimed in claim 1 , further comprising a first polarization film disposed at an outer side of the first substrate.
7. The MVA LCD as claimed in claim 6 , further comprising a second polarization film disposed at an outer side of the second substrate.
8. The MVA LCD as claimed in claim 7 , wherein a polarization axis of the first polarization film is perpendicular to a polarization axis of the second polarization film.
9. The MVA LCD as claimed in claim 1 , further comprising a color filter formed between the first substrate and the common electrode.
10. The MVA LCD as claimed in claim 1 , further comprising a semiconductor layer, a source electrode, and a drain electrode formed at each of the gate electrodes, wherein the semiconductor layer defines a groove, and the source electrode and the drain electrode are formed on the semiconductor layer at two sides of the groove.
11. The MVA LCD as claimed in claim 10 , wherein the drain electrode is connected to a corresponding one of the pixel electrodes.
12. The MVA LCD as claimed in claim 1 , wherein the gate insulating layer is made of silicon oxide (SiO 2 ).
13. A multi-domain vertical alignment (MVA) liquid crystal display (LCD), comprising:
a first substrate;
a common electrode formed at an inner side of the first substrate;
a plurality of protrusions formed on the common electrode;
a second substrate parallel to the first substrate;
a liquid crystal layer between the two substrates; and
a plurality of thin film transistors and pixel electrodes formed at an inner side of the second substrate, wherein each of the thin film transistors, a corresponding one of the pixel electrodes, the common electrode, and the liquid crystal layer define a pixel, and a dielectric medium layer is formed at the pixel electrode, the dielectric medium layer configured to facilitate the generation of an electric field having various electric field lines when a voltage is applied to the pixel.
14. The MVA LCD as claimed in claim 13 , wherein each of the thin film transistors comprises a gate electrode and a gate insulating layer formed at the inner side of the second substrate, a semiconductor layer formed on the gate insulating layer corresponding to the gate electrode, a source electrode, and a drain electrode.
15. The MVA LCD as claimed in claim 14 , wherein the dielectric medium layer is made from a same material as the gate insulating layer.
16. The MVA LCD as claimed in claim 15 , wherein the dielectric medium layer is made from silicon oxide (SiO 2 ).
17. The MVA LCD as claimed in claim 13 , further comprising a first alignment film formed on the common electrode.
18. The MVA LCD as claimed in claim 17 , further comprising a passivation layer formed on the thin film transistors and the pixel electrodes, and a second alignment film formed on the passivation layer.