Samsung Electro-Mechanics Co., Ltd.

Jong Su Yi

Sang Moon Lee

Young Woo Lee

Hwan-Soo Lee

Hye Yeon Cha

Hwan Soo Lee

Yong S Moon

Hark Lim Choi

Dong Ha Kim

Jong Myung Park

Koan Young Oh

Cheon Seog Rim

Kwang Joe Jeon

Cheon Seoq Rim

A color electronic paper display device, which includes: a base; a first colorant disposed on the base; a second colorant disposed on the base, the second colorant having higher reflectance and smaller size than those of the first colorant; and an electrode part for applying voltages to the first and second colorants.

Color electronic paper display device and method for manufacturing the same

There is provided an electronic paper display device and a manufacturing method thereof. The electronic paper display device includes first and second electrodes facing each other with a predetermined gap therebetween; partitions dividing a space between the first and second electrodes into a plurality of cell spaces; first and second ridge portions formed on the first and second electrodes and allowing for a streamlined electric field in the cell spaces; and rotatable balls disposed in the respective cell spaces and having electrical and optical anisotropy. The electronic paper display device controls the linear movement of the rotatable ball through a streamlined electric field, and thus the stability of an image is achieved, and a superior contrast ratio is provided.

Electronic paper display device and manufacturing method thereof

There is provided an electronic paper display device, and a method of manufacturing the same. The electronic paper display device includes a display side electrode formed of a transparent material, a rear electrode opposing the display side electrode, a substrate disposed between the display side electrode and the rear electrode, and including a plurality of partition walls separating a space between the display side electrode and the rear electrode and a plurality of cell spaces formed by the plurality of partition walls, and two or more types of rotary bodies disposed in the plurality of cell spaces and displaying different respective colors. The same type of rotary bodies displaying the same color among the rotary bodies includes a plurality of rotary bodies having different respective shades. The electronic paper display device has high image stability and uniformity and enables the expression of various shades.

Electronic paper display device and method of manufacturing the same

Disclosed is a color separating/synthesizing apparatus which uses three polarized beam splitters and one dichroic filter, as compared to a conventional system using four polarized beam splitters, thereby achieving a lightness in weight and a reduction in costs while achieving an improvement in performance.

Color separating/synthesizing apparatus

Disclosed is an apparatus for projection display using reflection type LCDs. The apparatus for projection display using reflection type LCDs according to the invention comprises an illuminating device including a lamp and a polarizing element for illuminating S wave or P wave, a color splitter/synthesizer, including the reflection type LCDs for providing an image corresponding to an inputted image and converting a polarizing state of incident light when reflecting the light, a retarder stack for differentiating the polarized state of a predetermined color from the incident light, and polarizing beam splitters composed of a material having a photoelastic constant less than 0.03&times;10 mm /N at a wavelength of 589.3 nm and a minimum transmittance higher than 90% in transmitting the thickness of 25 mm at a wavelength ranged 0.42 &mgr;m-0.70 &mgr;m for performing color split, color synthesis and analysis, and a projector for projecting the image passed through the color splitter/synthesizer onto a screen.

Apparatus for projection display using reflection type LCD

A laser scanning system formed by injection molding first and second scanning lenses by using a plastic substance for correcting field curvature at a scanned surface, minimizing focus shift and eccentricity due to a temperature variation and degradation of optical performance due to a tilt error, and providing a relatively simplified lens shape while facilitating mold processing and injection molding includes a light source for emitting a modulated beam from a laser diode, a collimator lens for forming the beam from the light source into parallel beams, a slit for partially passing the parallel beams from the collimator lens, a cylinder lens for converging the parallel beams passed through the slit in a sub scan direction, a polygonal rotating mirror rotated at high speed for deflecting the incident parallel beams at a prescribed angle, and a scanning lens system for receiving the deflected beams from the polygonal rotating mirror to form an image on the scanned surface by converging the incident beams in the scan and sub scan directions, in which a first scanning lens and a second scanning lens of a plastic substance constitute the scanning lens system. A first surface of the first scanning lens is formed with a spherical surface, a second surface of the first scanning lens and third and fourth surfaces of the second scanning lens are formed with an a spherical toric surface having a rotating axis in the scan direction. The shape around the optical axis of the scanning lens is concave, convex and concave from the first surface in the scan direction and concave, convex, concave and convex in the sub scan direction.

Laser scanning system

A laser scanning system includes a light source for scanning a modulated beam from a laser diode, a collimator lens for forming the beam from the light source into parallel beam, a slit for partially passing the required parallel beam passed through the collimator lens for scanning, a cylinder lens for converging the parallel beam passed through the slit in a sub scan direction, a polygonal rotating mirror rotated at high speed for deflecting the incident beams parallel in a scan direction and converged in the sub scan direction while going through the cylinder lens in the state of having a prescribed view of angle, and a scanning lens system for allowing the beams incident after being deflected by the polygonal rotating mirror to form an image on the scanned surface by converging the incident beams in the scan and sub scan directions, in which two first scanning lens and second scanning lens of a plastic substance constitute the scanning lens system, a first surface of the first scanning lens is formed of a coaxially aspherical surface, a second surface of the first scanning lens and third and fourth surfaces of the second scanning lens are formed of an aspherical toric surface having a rotating axis in the scan direction, and the shape around the optical axis of the scanning lens is to be concave, convex, convex and concave from the first surface in the scan direction and to be concave, convex, concave and convex in the sub-scan direction.

Growing community of inventors

Gyunggi-do, South Korea

Jong Su Yi