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US 7,480,018 B2Granted
Color filter substrate, method for manufacturing the same, liquid crystal display panel, and electronic equipment
AssigneeSeiko Epson Corporation
InventorsKeiji Takizawa, Yoshihiro Otagiri, Tomoyuki Nakano
Life of this patent
Estimating the term…
Abstract
Each color filter 22 includes a deep-color portion 221 being superimposed on a translucent portion 211 of a reflection layer 21 and a light-color portion 222 having an optical density lower than that of the deep-color portion 221. A light-shielding layer 23 for shielding the gaps between individual subpixels 7 from light is a laminate composed of at least a deep-color portion 221B of a blue color filter 22B, a deep-color portion 221R of a red color filter 22R, and a deep-color portion 221G of a green color filter 22G.
Claims6
A liquid crystal display panel comprising:
- a first substrate;
- a second substrate facing the first substrate;
- a liquid crystal between the first substrate and the second substrate;
- pixels each including a transmissive display portion and a reflective display region;
- reflectors disposed between the second substrate and the liquid crystal;
- a first color filter arranged on an observation side with respect to the reflectors, the first color filter transmitting light with a wavelength corresponding to a first color, the first color filter including a first deep-color portion and a first light-color portion having an optical density lower than an optical density of the first deep-color portion, the first deep-color portion being located in the transmissive display portion of the corresponding pixel, the first light-color portion being located in the reflective display portion of the corresponding pixel;
- a second color filter arranged on the observation side with respect to the reflectors, the second color filter transmitting light with a wavelength corresponding to a second color, the second color filter including a second deep-color portion and a second light-color portion having an optical density lower than an optical density of the second deep-color portion, the second deep-color portion being located in the transmissive display portion of the corresponding pixel, the second light-color portion being located in the reflective display portion of the corresponding pixel;
- and
- a light-shielding layer formed of a laminate structure including at least the first deep-color portion, the first deep-color portion included in the light shielding layer being thinner than the first deep-color portion located in the transmissive display portion of the corresponding pixel.
6 more elements
A liquid crystal display panel comprising:
- a first substrate;
- a second substrate facing the first substrate;
- a liquid crystal between the first substrate and the second substrate;
- pixels each including a transmissive display portion and a reflective display region;
- reflectors disposed between the second substrate and the liquid crystal;
- a first color filter arranged on an observation side with respect to the reflectors, the first color filter transmitting light with a wavelength corresponding to a first color, the first color filter including a first deep-color portion and a first light-color portion having an optical density lower than an optical density of the first deep-color portion, the first deep-color portion being located in the transmissive display portion of the corresponding pixel, the first light-color portion being located in the reflective display portion of the corresponding pixel;
- a second color filter arranged on the observation side with respect to the reflectors, the second color filter transmitting light with a wavelength corresponding to a second color, the second color filter including a second deep-color portion and a second light-color portion having an optical density lower than an optical density of the second deep-color portion, the second deep-color portion being located in the transmissive display portion of the corresponding pixel, the second light-color portion being located in the reflective display portion of the corresponding pixel;
- a light-shielding layer formed of a laminate structure including at least the first deep-color portion, the first deep-color portion included in the light shielding layer being thinner than the first deep-color portion located in the transmissive display portion of the corresponding pixel;
- and
- a light-shielding layer formed of a laminate structure including the first light-color portion as the second or higher layer of the laminate structure in order away from the second substrate, the first light-color portion included in the light shielding layer being thinner than the first light-color portion located in the reflective display portion of the corresponding pixel.
7 more elements
Dependencies are inferred from the claim text.