Transmissive and reflective type liquid crystal display
First Claim
1. A transmissive and reflective type LCD comprising:
- a first substrate;
a second substrate having an inner surface that is arranged so as to face the first substrate;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate, the outer surface being opposite to the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights.
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Accused Products
Abstract
Disclosed is a transmissive and reflective type LCD. In the LCD, a second substrate faces a first substrate. Liquid crystal layer is formed between the first and second substrate. A first polarizing plate is formed on outer surface of the first substrate. A second polarizing plate is formed on outer surface of the second substrate. A backlight is arranged at a rear side of the first polarizing plate. A transparent transflective film is arranged between the first polarizing plate and the backlight and has a plurality of layers where a first and a second layer each having different refractivity indexes are alternatively stacked. The transparent transflective film partially reflects and transmits incident light. By a restoring process occurring between the transflective film and the backlight, a predetermined amount of the incident light is transmitted through the transflective film repeatedly, so that transmissivity and light efficiency are enhanced.
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Citations
44 Claims
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1. A transmissive and reflective type LCD comprising:
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a first substrate;
a second substrate having an inner surface that is arranged so as to face the first substrate;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate, the outer surface being opposite to the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A transmissive and reflective type LCD comprising:
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an LC cell including a first substrate, a second substrate having an inner surface that is arranged to face the first substrate, and a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate that oppositely faces the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight and having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, wherein the transmissive and reflective type LCD has a reflection light path along which a first incident light beam is incident into the LC cell from a front side of the LC cell, is reflected by the transflective film, and is outputted through the front side of the LC cell, and a transmission light path along which a second incident light beam is incident into the LC cell from a rear side of the LC cell, is transmitted through the transflective film, and is outputted through the front side of the LC cell. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A transmissive and reflective type LCD comprising:
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a first substrate on which a first transparent electrode is formed;
a second substrate of which an inner surface is arranged so as to face the first substrate, the inner surface of the second substrate having a second transparent electrode thereon;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate oppositely facing the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights. - View Dependent Claims (28)
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29. A transmissive and reflective type LCD comprising:
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a first substrate on which a switching element and a transparent pixel electrode connected to the switching element are formed;
a second substrate of which an inner surface is arranged so as to face the first substrate, the inner surface of the second substrate having a transparent common electrode thereon;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate oppositely facing the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights. - View Dependent Claims (30)
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31. A transmissive and reflective type LCD comprising:
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a first substrate including a gate line formed on an insulating substrate, a data line insulated from the gate line and arranged to intersect the gate line, and a pixel electrode electrically connected to the data line;
a second substrate of which an inner surface is arranged so as to face the first substrate, the inner surface of the second substrate having a transparent common electrode thereon;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate oppositely facing the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights. - View Dependent Claims (32, 33, 34, 35, 36)
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37. A transmissive and reflective type LCD comprising:
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a first substrate including i) a thin film transistor having a gate electrode formed on an insulating substrate, a gate insulating layer formed on the gate electrode and on the insulating substrate, an active pattern formed on the gate insulating layer to be disposed above the gate electrode, and a source electrode and a drain electrode separately formed on the active pattern each other, and ii) a pixel electrode electrically connected to one of the source electrode and the drain electrode;
a second substrate of which an inner surface is arranged so as to face the first substrate, the inner surface of the second substrate having a transparent common electrode thereon;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate oppositely facing the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights. - View Dependent Claims (38, 39)
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40. A transmissive and reflective type LCD comprising:
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a first substrate including i) a thin film transistor having an active pattern formed on an insulating substrate, a gate insulating layer formed on the active pattern and on the insulating substrate, a gate electrode formed on the gate insulating layer to be disposed above the active pattern, an interinsulation layer formed on the gate electrode and the gate insulating layer, and a source electrode and a drain electrode separately formed on the interinsulation layer each other, and ii) a pixel electrode electrically connected to one of the source electrode and the drain electrode;
a second substrate of which an inner surface is arranged so as to face the first substrate, the inner surface of the second substrate having a transparent common electrode thereon;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate oppositely facing the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights. - View Dependent Claims (41, 42)
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43. A transmissive and reflective type LCD comprising:
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a first substrate including i) a display cell array circuit formed on an insulating substrate, a plurality of data lines and a plurality of gate lines arranged in a matrix shape to intersect each other on the display cell array circuit, and ii) a gate driver circuit, formed adjacent to a first portion of the display cell array circuit, for driving the gate lines;
a second substrate of which an inner surface is arranged so as to face the first substrate, the inner surface of the second substrate having a transparent common electrode thereon;
a liquid crystal layer formed between the first substrate and the second substrate;
a first polarizing plate formed on an outer surface of the first substrate;
a second polarizing plate formed on an outer surface of the second substrate oppositely facing the inner surface of the second substrate;
a backlight arranged at a rear side of the first polarizing plate; and
a transparent transflective film arranged between the first polarizing plate and the backlight, said transparent transflective film having a plurality of layers in which a first layer and a second layer having different refractivity indexes from each other are alternatively stacked, the transparent transflective film partially reflecting and partially transmitting incident lights. - View Dependent Claims (44)
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Specification