Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

2144results about How to "Avoid unevenness" patented technology

Display apparatus

A display apparatus, that includes current driving type luminescent elements, has a driving system that takes the conduction types of TFTs to control the emission of the luminescent elements into consideration. In order to reduce driving voltage and improve display quality simultaneously, the arrangement is provided such that if the second TFT (30) which performs the "on-off" function of the current for the luminescent element (40) is of an N channel type, the potential of the common power supply line ("com") is lowered below the potential of the opposite electrode ("op") of the luminescent element (40) to obtain a higher gate voltage ("Vgcur"). In this case, if the first TFT (20) connected to the gate of the second TFT (30) is of a P channel type, when using the potential of the potential-holding electrode ("st") at the "on" state as a reference, potentials of the scanning signal ("Sgate") at the lower potential and the common power supply line ("com") are rendered of the same polarities with respect to this potential of the potential-holding electrode ("st"). Therefore, the potential of the image signal ("data") to turn "on" can be shifted within the range of the driving voltage in the display apparatus (1) in the direction to reduce resistances at the "on" states of the first TFT (20) and the second TFT (30) to reduce driving voltage and improve display quality.
Owner:INTELLECTUAL KEYSTONE TECH

Electroacoustic transducer

An electroacoustic transducer includes a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap therebetween. The magnetic circuit includes a magnet inducing a magnetic field in the gap, the magnet having a surface constituting one of the opposed surfaces. The magnetic circuit further includes a diaphragm and a coil having electrically conducting paths secured to the diaphragm. The coil has portions of its paths situated in the gap.
Owner:GETTOP EURO R&D

Emission device, surface light source device and display

A light flux control member has a back face provided with a recess and a ring-like-recess-portion surrounding the recess. Output light of a point-like-light-source (light emission element) is incident to the recess and the ring-like-recess-portion. Incident light to the recess is emitted from a light control emission face after inner-propagation. Incident light to the ring-like-recess-portion is refracted as to hardly generate inner-propagation light deflected to directions near to a direction of reference optical axis L, resulting in outgoing from any part of the light control emission face, or, if some outgoing occurs from the light control emission face, such outgoing occurs only at an outer periphery portion of the light control emission face. As a result, illumination light quality is avoided from being reduced by appearance of conspicuous ring-like bright part. In addition, uniform illumination light can be supplied to a broad angle range. Even if a plurality of point-like-light-sources are arranged at intervals, respective light fluxes originated from respective point-like-light-sources are well mixed.
Owner:ENPLAS

Embedded type touch screen and display device

The invention discloses an embedded type touch screen and a display device. A public electrode layer integrally connected in an array substrate is divided to form a plurality of touch drive sub-electrodes and a plurality of public sub-electrodes, the touch drive sub-electrodes and the public sub-electrodes are independent of each other and arrayed at intervals, the touch drive sub-electrodes are electrically connected through touch drive signal lines to form touch drive electrodes, and the public sub-electrodes are electrically connected through public electrode signal lines to form public electrodes; touch sensing electrodes are arranged on opposite substrates, the touch sensing electrodes and the touch drive electrodes are arranged in a cross mode, the touch drive electrodes are driven in a time-share mode, and therefore the touch function and the display function are achieved. Due to the fact that the touch drive electrodes in the touch screen are composed of the multiple touch drive sub-electrodes and the public electrodes are composed of the multiple public sub-electrodes, the signal transmission loads of the touch drive electrodes and the public electrodes are relatively close, the transmission speed of public signals in the public electrodes in the display stage and the transmission speed of public signals in the touch drive electrodes in the display stage are also relatively close, the problem that displayed images are not even can be solved, and image quality can be improved.
Owner:BEIJING BOE OPTOELECTRONCIS TECH CO LTD +1

Pretreatment agent for ink jet textile printing, ink jet textile printing ink set, and method of ink jet textile printing

A pretreatment agent was provided for ink jet textile printing. The pretreatment agent contains a polyvalent metal compound, an anionic resin emulsion, a fluorinated water and oil repellent, and water.
Owner:SEIKO EPSON CORP

Light guiding plate unit, surface light source apparatus and liquid crystal display apparatus

A light guiding plate unit which can emit uniform light of a predetermined polarization, a surface light source apparatus and a liquid crystal display apparatus are provided. A light guiding plate unit is provided with a light guiding plate which can guide light and has a first surface from which light is emitted and a diffraction grating which is provided on the first surface of the light guiding plate, and the diffraction grating is formed of a number of metal wires in straight lines which are aligned in a direction approximately perpendicular to the long axis of the metal wires, and the length w of the metal wires in the direction in which the number of metal wires are aligned is approximately 55% or more and approximately 85% or less of the spatial period of the diffraction grating. Thus, the ratio of the length w of the metal wires to the spatial period is set to 0.65 or higher and 0.85 or lower, and thus, it is possible to control the amount of transmission of light in a predetermined state of polarization through the diffraction grating formed on the first surface.
Owner:SUMITOMO CHEM CO LTD

Optical multilayer film and image display device

ActiveUS20080180801A1Excellent display qualityPrevent occurrenceOptical elementsDual axisPolyester
A first adhesion layer and a second adhesion layer are formed on a base material formed of polyester biaxially stretched in this order from the side of the base material. Additionally, a hard coat layer and an antireflection layer are formed on the second adhesion layer to form a multilayer film. When refractive indices of the base material, the first adhesion layer, the second adhesion layer, and the hard coat layer are η1, η2, η3, and η4, respectively, the refractive indices are adjusted so as to satisfy the following formulae (1) to (3) to prevent rainbow unevenness.(η1 / η4)1 / 2×0.95≦η2 / η3≦(η1 / η4)1 / 2×1.05   (1)η1<η4   (2)η2<η3   (3)The two adhesion layers can enhance the adhesive strength with the base material.
Owner:FUJIFILM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products