Transflective color liquid crystal display with internal rear polarizer
First Claim
1. A transflective color liquid crystal display comprising:
- a front polarizer;
a front substrate disposed behind the front polarizer;
a front transparent electrode disposed behind the front substrate;
a liquid crystal layer disposed behind the front transparent electrode;
a rear transparent electrode disposed behind the liquid crystal layer;
a rear polarizer disposed behind the rear transparent electrode;
a reflector disposed behind the rear polarizer;
a first color filter layer disposed behind the front substrate and in front of the reflector;
a rear substrate disposed behind the reflector; and
a second color filter layer disposed behind the reflector.
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Accused Products
Abstract
A transflective color liquid crystal display (200) with internal rear polarizer (275) has a front polarizer (260), a front substrate (210), a first color filter layer (212), a front transparent electrode (240), a liquid crystal layer (250), a rear transparent electrode (230), a rear polarizer (275), a reflector (235), and a rear substrate (220). The inclusion of an internal rear polarizer (275) results in little optical path difference between a reflective mode and a transmissive mode of the transflective color LCD (200). The internal rear polarizer (275) also results in little parallax, because the internal reflector (235) is very close to an image-forming layer (250). Additionally, a second color filter layer (214) can be added behind the internal reflector (235) to enhance the brightness and color saturation of the transflective color LCD (200) with internal rear polarizer (275) during the transmissive mode.
24 Citations
14 Claims
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1. A transflective color liquid crystal display comprising:
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a front polarizer;
a front substrate disposed behind the front polarizer;
a front transparent electrode disposed behind the front substrate;
a liquid crystal layer disposed behind the front transparent electrode;
a rear transparent electrode disposed behind the liquid crystal layer;
a rear polarizer disposed behind the rear transparent electrode;
a reflector disposed behind the rear polarizer;
a first color filter layer disposed behind the front substrate and in front of the reflector;
a rear substrate disposed behind the reflector; and
a second color filter layer disposed behind the reflector. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A portable electronic device with a transflective color liquid crystal display comprising:
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a front polarizer;
a front substrate;
a rear substrate;
an image forming layer disposed between the front substrate and the rear substrate;
a polarizer disposed between the image forming layer and the rear substrate;
a reflector disposed between the polarizer and the rear substrate;
a first color filter layer disposed in front of the reflector; and
a second color filter layer disposed behind the reflector. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification
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- Resources
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Current AssigneeGoogle Technology Holdings LLC (Alphabet Inc.)
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Original AssigneeMotorola, Inc. (Motorola Solutions, Inc.)
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InventorsPolak, Robert D., Zhuang, Zhiming, Akins, Robert B.
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Primary Examiner(s)Parker, Kenneth
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Application NumberUS10/427,947Publication NumberTime in Patent Office747 DaysField of Search349/106, 349/96, 349/114US Class Current349/114CPC Class CodesG02F 1/093 used as non-reciprocal devi...G02F 1/133528 PolarisersG02F 1/133555 TransflectorsG02F 1/133565 inside the LC elements, i.e...G02F 1/133617 Illumination with ultraviol...
