Sony Corporation

Hideo Kataoka

Tetsuo Urabe

Takayuki Fujioka

Nobuyuki Shigeno

Minoru Nakano

Ying Bao Yang

Hirohide Fukumoto

Yukio Kinoshita

Masaki Munakata

Junichi Ushirono

Katsuhide Uchino

Junichi Yamashita

Yoshitoshi Kida

Yoshiharu Nakajima

Naobumi Toyomura

Toshikazu Maekawa

Yang Ying Bao

Naoshi Goto

A display apparatus, comprising a pixel array section and a drive section that drives the pixel array section, wherein the pixel array section includes first scanning lines and second scanning lines arranged in rows, signals lines arranged in columns, pixels that are provided where the first scanning lines, the second scanning lines, and the signal lines meet and that are arranged in rows and columns, a power line that supplies power to each of the pixels, and an earth line. The drive section includes a first scanner that sequentially line scans the pixels in rows by sequentially supplying a first control signal to each of the first scanning lines, a second scanner that sequentially supplies a second control signal to each of the second scanning lines in conjunction with the sequential line scanning, and a signal selector that supplies a video signal to the columns of signal lines in conjunction with the sequential line scanning.

Display apparatus, driving method thereof and electronic device

A display apparatus includes a first substrate, a second substrate separated from the first substrate by a predetermined gap, an electro-optical layer located within the gap, a diffusing reflection layer having a plurality of adjacent polygonal columns, and electrodes formed on at least one of the first substrate and second substrate for application of voltage to the electro-optical layer. The polygonal columns comprise upper end sloping surfaces having a maximum inclination angle of less than 12&#xb0;.

Diffusing reflector and manufacture of the same and reflection type display apparatus

There is provided a method of manufacturing a diffusing reflector which assures high diffusion efficiency and excellent reflection characteristic for the lighting. First, a resin film having photosensitivity is formed on a substrate. Next, gathering of pillar-shaped bodies isolated each other by the patterning of resin film with the photolithography is provided. Subsequently, the uneven surface layer having the maximum inclination angle under 12&#xb0; is formed by gently deforming individual pillar-shaped bodies with the heat treatment. Moreover, the gently deformed uneven surface layer is coated with the resin and the flat openings between pillar-shaped bodies arranged discretely are buried to ease the inclination angle. Finally, a metal filmformed on the gently deformed uneven surface layer.

Diffusion reflector and manufacture of the same

The present invention is directed to a liquid crystal display panel to which an external horizontal drive circuit is connected in a TAB, COG, or other form. The liquid crystal display panel is capable of performing aging by a substrate alone by connecting the external drive circuit. The liquid crystal display panel includes an active matrix display area, a vertical drive circuit, and a horizontal aging circuit that supplies signals to a plurality of source lines at one time provided on a substrate. The medium-sized to small-sized active matrix type liquid crystal display apparatus is used in a PDA applications, among other, and is capable of being produced at a high quality and a low cost without using a time sharing driving method. The active matrix type liquid crystal display apparatus is provided with a horizontal drive circuit as an external circuit, wherein a vertical drive circuit is formed integrally with a liquid crystal display area on a glass substrate by using low temperature PolySi TFTs. The horizontal drive circuit is connected to a liquid crystal display panel substrate by COG. Output terminals of a driver IC constituting the horizontal drive circuit and source lines Ls are in a one-to-one correspondence.

Liquid crystal display panel and production method of the same, and liquid crystal display apparatus

A reflective guest-host liquid-crystal display device includes a first substrate for receiving incident light, on the inner surface of which transparent electrodes are formed; a second substrate which has a reflective film formed thereon and which is spaced to face the first substrate with a predetermined spacing; an electro-optical element held between the first and second substrates, which electro-optical element has a lamination structure including a guest-host liquid-crystal layer which contains a dichroic dye and which is uniformly oriented with respect to the transparent electrode, and an optical thin-film layer which has a predetermined optical anisotropic axis and which is formed at least on the reflective film, the optical thin-film layer being formed from a polymer liquid crystal having liquid crystal molecules which are uniaxially oriented along the optical anisotropic axis; and a passivation layer which is interposed between the optical thin-film layer and the liquid crystal layer.

Reflective guest-host liquid-crystal display device

A diffusing reflector provides high diffusion efficiency and superior reflection characteristics. The diffusing reflector includes a substrate, a resin film on the substrate, and a metal film formed on the resin film. The resin film indudes multiple adjacent polygonal columns that have upper end sloping surfaces with a maximum inclination angle of 12 degrees or less.

First, a photosensitive resin film is formed on a substrate. Then, the resin film is patterned by photolithography into a collection of quadrilateral prisms that are arranged discretely. Then, the individual quadrilateral prisms are deformed so as to be undulated gently by performing a heat treatment. Thereafter, a resin film is applied to the collection of deformed quadrilateral prisms, whereby flat gap portions between the discrete quadrilateral prisms are filled in and curved surfaces are formed there. Finally, a metal film is formed on the collection of gently undulated quadrilateral prisms.

Diffuse reflection plate, manufacturing method thereof, and reflection-type display device

A reflective display device includes a panel, a light guide plate and a light source. The panel is provided with a transparent first substrate lying on the side of the external incident light, a second substrate joined to the first substrate with a predetermined gap therebetween and lying on the reflection side, a guest-host liquid crystal layer held in the gap between the substrates, and electrodes provided on each substrate for applying a voltage to the guest-host liquid crystal layer. The light guide plate is composed of a transparent material and is arranged on the outside of the first substrate. The light source is arranged on the end of the light guide plate and generates illumination light as required. The light guide plate normally transmits external light onto the first substrate and emits the external light reflected from the second substrate, and also, as required, guides illumination light onto the first substrate and emits the illumination light reflected from the second substrate.

Reflective liquid crystal display device with a panel, a light guide plate and polarizing plate

A reflection type display device includes a panel, a light guide plate placed external to the panel, and a light source placed at the end of the light guide plate for generating illumination light as required. The light guide plate normally transmits external light onto a first substrate of the panel and emits the external light reflected from a second substrate of the panel, while, as required, guides illumination light onto the first substrate and emits the illumination light reflected from the second substrate. The light guide plate includes a planar section divided into bands and an inclined section lying between each planar section. The light guide plate reflects the illumination light guided from the light source at each inclined section so as to lead it onto the first substrate and emits the illumination light reflected from the second substrate through each planar section and inclined section. The width of the planar section is set to 15 or more times, or preferably 20 or more times, the width of the inclined section.

Reflection type display with light waveguide with inclined and planar

A reflective guest-host liquid crystal display device includes an optical reflective layer and a quarter wavelength plate (1/4 wavelength phase shifter) inside the device provides improved contrast an brightness of the display with a paper-white tone.

Reflective LCD having orientation film formed on quarter wavelayer and

A liquid crystal display device minimized in image retention phenomenon, comprising: a first insulating substrate having a plurality of pixel electrodes arranged in a matrix and a first alignment film provided on the inner surface thereof, said insulating substrate comprising a plurality of thin film transistors associated with each of the pixel electrodes; a second insulating substrate disposed opposed to the first insulating substrate, said second insulating substrate having facing electrodes and a second alignment film formed on the inner surface thereof; a liquid crystal layer interposed between the first and the second insulating substrates; and at least one of the first and the second alignment films having a thickness of 60 nm or less.

Liquid crystal display device

A color reflective guest-host liquid-crystal display device is provided which does not require a polarizing plate and which has a bright screen. A transparent electrode is formed on an upper substrate of a color reflective guest-host liquid-crystal display device. A reflection electrode is formed on a lower substrate, and an electro-optic element is held in the spacing between the two substrates so as to perform light modulation in response to an applied voltage. The electro-optic element has a laminated structure including a guest-host liquid-crystal layer which contains a dichroic dye and which is uniformly oriented along the transparent electrode, and a phase shifter which has a predetermined optical anisotropic axis and which is formed along the reflection electrode. The transparent electrode and the reflection electrode face each other and define a plurality of pixels. A color filter assigns incident light of a different wavelength to each pixel. The phase shifter is divided for each pixel, and the thickness thereof is adjusted according to a corresponding wavelength. Further, when this liquid-crystal display device is formed into an active matrix type, the pixel aperture ratio can be improved by providing the color filter on the drive substrate side on which switching elements and pixel electrodes are formed rather than on the facing substrate.

A reflective guest-host liquid-crystal display includes: a pair of upper and lower substrates joined together with a predetermined space therebetween; and a guest-host liquid-crystal layer which is held within the space and contains a dichroic dye. The upper substrate is provided with at least a counter electrode. At least thin-film transistors (TFTs), a reflective layer, a .lambda./4 phase shifter (quarter-wavelength plate), and pixel electrodes are formed on the lower substrate. The .lambda./4 phase shifter is formed above the TFTs and the reflective layer, and has contact holes connecting to the drain electrodes of the TFTs. The pixel electrodes are patterned on the .lambda./4 phase shifter and connected to the corresponding drain electrodes of the TFTs through the corresponding contact holes.

Active matrix reflective guest-host LCD with pixel electrodes patterned

A reflective guest-host liquid-crystal display of the present invention includes a pair of substrates joined together at a predetermined distance therebetween. One of the substrates is positioned at an incident side and the other is positioned at a reflection side. A guest-host liquid-crystal layer, a reflective layer, and a .lambda./4 phase shifter are provided within a space formed between the pair of substrates. The guest-host liquid-crystal layer positioned adjacent to the incident-side substrate contains a dichroic dye. The .lambda./4 phase shifter is provided between the guest-host liquid-crystal layer and the reflective layer and is located adjacent to the reflection-side substrate. A counter electrode and pixel electrodes are formed on the incident-side substrate and the reflection-side substrate, respectively, so as to apply a voltage to the guest-host liquid-crystal layer. The .lambda./4 phase shifter is composed of a uniaxially aligned side-chain type liquid-crystal polymer having at least a biphenyl benzoate group introduced into a side chain, and thereby exhibits improved solvent resistance.

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Kanagawa, Japan

Hideo Kataoka