Reflective liquid crystal display device using a cholesteric liquid crystal color filter
AssigneeLG. Philips LCD Co., Ltd.
InventorJong-Weon Moon
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Abstract
A reflective liquid crystal display device include an upper substrate, a lower substrate, a liquid crystal layer interposed between the upper and lower substrates, a common electrode beneath the upper substrate, a plurality of orthogonal gate lines and data lines disposed on the lower substrate, a plurality of thin film transistors located near a crossing region of the gate and data lines, each of the plurality of thin film transistors include source and drain electrodes, a light absorption layer formed on each of the plurality of thin film transistors, a cholesteric liquid crystal color filter formed on the light absorption layer, and a plurality of pixel electrodes formed on the cholesteric liquid crystal color filter layer.
Claims20
A reflective liquid crystal display device, comprising:
- an upper substrate;
- a lower substrate;
- a liquid crystal layer interposed between the upper and lower substrates;
- a common electrode beneath the upper substrate;
- a plurality of orthogonal gate lines and data lines disposed on the lower substrate;
- a plurality of thin film transistors, each of the thin film transistors disposed adjacent to a crossing region of the gate and data lines and including source and drain electrodes;
- a light absorption layer formed on each of the plurality of thin film transistors;
- a cholesteric liquid crystal color filter layer formed on the light absorption layer;
- and
- a plurality of pixel electrodes formed on the cholesteric liquid crystal color filter layer.
A method of fabricating a reflective liquid crystal display device, comprising the steps of:
- forming upper and lower substrates;
- forming a liquid crystal layer interposed between the upper and lower substrates;
- forming a common electrode beneath the upper substrate;
- forming a plurality of orthogonal gate and data lines on the lower substrate;
- forming a plurality of thin film transistors, each thin film transistor disposed adjacent to a crossing region of the plurality of gate and data lines and including source and drain electrodes;
- forming a light absorption layer on the thin film transistors;
- forming a cholesteric liquid crystal color filter layer on the light absorption layer;
- and
- forming a plurality of pixel electrodes on the cholesteric liquid crystal color filter layer.
A reflective liquid crystal display device, comprising:
- an upper substrate;
- a lower substrate;
- a liquid crystal layer interposed between the upper and lower substrates;
- a common electrode beneath the upper substrate;
- a plurality of orthogonal gate lines and data lines disposed on the lower substrate;
- a light absorption layer formed on the plurality of orthogonal gate and data lines;
- a plurality of thin film transistors located adjacent a crossing region of the gate and data lines and embedded within the light absorption layer, each of the plurality of thin film transistors including source and drain electrodes;
- a cholesteric liquid crystal color filter layer formed on the light absorption layer;
- and
- a plurality of pixel electrodes formed on the cholesteric liquid crystal color filter layer.
Dependencies are inferred from the claim text.