Color filter substrate, method for manufacturing the same, liquid crystal display panel, and electronic equipment
View Patent ↗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 221 B of a blue color filter 22 B, a deep-color portion 221 R of a red color filter 22 R, and a deep-color portion 221 G of a green color filter 22 G.
1. 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.
2. The liquid crystal display panel according to claim 1 , the light-shielding layer 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.
3. The liquid crystal display panel according to claim 1 , the first and second color filters and the light-shielding layer being located between the second substrate and the liquid crystal.
4. The liquid crystal display panel according the claim 1 , the first and second color filters and the light-shielding layer being located between the first substrate and the liquid crystal.
5. The liquid crystal display panel according to claim 1 , the first color filter being for transmitting light with a wavelength corresponding to one of red, green, and blue, optical densities of the first deep-color portion and the first light-color portion being chosen so that, in a CIE chromaticity diagram, an area of color reproduction region of the first deep-color portion is 3.5 to 5 times the area of color reproduction region of the first light-color portion.
6. 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.