61results about How to "Small light emitting area" patented technology

A light source apparatus includes: an excitation light source; a phosphor having, as a main fluorescence wavelength region, wavelengths of green excited by excitation light emitted from the excitation light source; a red laser light source that oscillates in a red wavelength region; an optical multiplexer that multiplexes fluorescence emitted from the phosphor and red laser light emitted from the red laser light source; and color demultiplexing optics that demultiplexes the multiplexed light into two light beams. A cutoff wavelength of the color demultiplexing optics is a wavelength in the wavelength region of fluorescence, and is shorter than the red wavelength region.

There is provided a method for producing a light emitting device having a small light emitting area and showing high light extraction efficiency. An uncured resin 13′ is dropped on either one or both of a light emitting element 11 and a tabular member 14 in such an amount that the resin is maintained on them by surface tension, the light emitting element 11 and the tabular member 14 are piled up with the uncured resin 13′ maintained between them and on a side of the light emitting element by surface tension of the uncured resin 13′ to form an uncured resin layer 13′ having an inclined side 130, and then the resin layer 13 is cured. The tabular member is constituted with a material having an alkali metal oxide content of 0.2% by weight or lower.

To provide a light-emitting device including the plurality of light-emitting elements having a structure in which a light-emitting area is large and defects in patterning of light-emitting elements are suppressed. To provide a lighting device including the light-emitting device. The light-emitting device includes a first wiring provided over a substrate having an insulating surface, an insulating film provided over the first wiring, a second wiring provided over the insulating film, and a light-emitting element unit including a plurality of light-emitting elements provided over the first wiring with the insulating film provided therebetween. The plurality of light-emitting elements each include a first electrode layer having a light-blocking property, a layer containing an organic compound in contact with the first electrode layer, and a second electrode layer having a light-transmitting property in contact with the layer containing an organic compound. The layers containing an organic compound are separated by a separation layer.

A light emitting diode devic that includes (a) a light emitting diode section, (b) an electrically conductive pad section being disposed outside the light emitting diode section and being electrically connected to an external power source, and (c) at least one electrically conductive interconnection section for connecting the electrically conductive pad section to one side or both sides of the light emitting diode section. In the light emitting diode device, a wire is connected to the electrically conductive pad section disposed outside the light emitting diode section, and the electrically conductive pad section is connected to one side of the light emitting diode section by means of at least one electrically conductive interconnection section, so that not only it is easy to uniformly coat a fluorescent substance, but also an area covering vertically emitted light can be reduced to enhance a light extraction efficiency of the light emitting diode device.

The invention relates to a pixel arrangement structure, a pixel driving method, and a display panel. In the invention, a first pixel group is set as a first pixel structure, so that the light-emittingarea occupied by each pixel unit in the entire pixel arrangement structure can be reduced, the aperture opening ratio of each sub-pixel is improved, and the display resolution is improved. In the meantime, in the embodiment, each first sub-pixel in the first pixel structure can implement pixel sharing. Each first sub-pixel can achieve a high resolution of an actual display effect by a low resolution of physical pixel arrangement by the principle of color borrowing. The pixel arrangement structure in the invention improves the aperture opening ratio and the ratio of the light-emitting area ofthe first sub-pixel, thereby improving the lifetime of the first sub-pixel. Therefore, the pixel arrangement structure provided in the embodiment can be used for preparing an OLED display screen or adisplay panel that has both high resolution and good service life.

The invention provides an organic light emitting diode (OLED) color display screen, which comprises a first substrate and a second substrate. The display screen is formed by arranging a plurality of pixels; each pixel comprises a red light sub-pixel, a green light sub-pixel, a blue light sub-pixel, and a driving circuit for driving the red light sub-pixel, the green light sub-pixel and the blue light sub-pixel to work; the red light sub-pixels, the green light sub-pixels and the blue light sub-pixels are respectively positioned on different planes of the two substrates or the same substrate; and the light emitting areas of the red light sub-pixel, the green light sub-pixel and the blue light sub-pixel of the same pixel are at least partially superposed in the direction vertical to the planes of the red light sub-pixel, the green light sub-pixel and the blue light sub-pixel. Meanwhile, the invention provides a manufacturing method for the OLED color display screen. The output quantity of blue light is improved by enlarging the area of the blue light pixels, so that the service life of the display screen is prolonged without affecting the resolution of the display screen.

The invention discloses a light and thin LED display screen and an LED display system. The light and thin LED display screen comprises at least two PCB bars, wherein at least two LED units are arranged on each PCB bar; each LED unit comprises a package body on which at least two LED thin film chips are stacked; each LED thin film chip is enclosed and fixed in the package body and is in electric and signal connection with exterior through pins; each LED thin film chip is provided with at least two pairs of P-N junctions; each pair of P-N junctions comprises an interface; a light emergent surface of each LED unit is arranged on the side edge of the corresponding PCB bar and is in electric and signal connection with a conductive layer on the side face of each PCB bar through the pin of the LED unit; and each PCB bar is also provided with a supporter which is integrated with the PCB bar and used for supporting and fixing the shape and position of each PCB bar. The LED display system comprises the light and thin LED display screen and a control device. The LED display screen of the invention is light and thin, has convenient installation and maintenance and good display effect.

The invention provides a high-efficiency double-layer internal-reflecting fluorescent tube in order to solve the problems that the fluorescent tube has low luminous flux and short service life in the prior art and make specific overall improvement on the existing fluorescent tube, which is completely different from the existing fluorescent tube. The fluorescent tube of the invention comprises an outer glass tube (1), internal coating powder (2) for the outer glass tube (1), an inner glass tube (5), external coating powder for the inner glass tube (5), a ring-shaped filament (3), a reflecting film (6) and a heat-insulating material (7), wherein the fluorescent tube is characterized in that the outer wall of the inner layer and the inner wall of the outer layer of the double-layer glass tube are coated with pure trichromatic fluorescent powder, and the thickness of the fluorescent powder coating the inner wall of the outer glass tube is reduced by half; the heat-insulating material is loaded in the internal space of the inner glass tube; the inner wall of the inner glass tube is coated with the reflecting layer; and the tube cap is particularly an H-shaped and ring-shaped glass tube cap provided with the ring-shaped filament, thus forming a device for preventing mercury spot and black spot.

A vehicle comprising a vehicle body frame (11), a front cowl (72) provided in front of the vehicle body frame, and a headlight unit (59) mounted within the width, in the vehicle's lateral direction, of the front cowl. The headlight unit has, on the opposite sides thereof, recesses (115L, 115R) recessed inward in the vehicle's lateral direction. Air intake openings (111L, 111R) for introducing air in front of the front cowl into the inner side of the front cowl are formed between the headlight unit and the front cowl.

The invention discloses a display panel and a display device. The display panel comprises an array substrate and a color film substrate arranged opposite to each other; the display panel comprises a display area; a display area of the color film substrate comprises a color resistance layer; the color resistance layer comprises a plurality of pixel units arranged in an array mode, and each pixel unit comprises a red color resistance block, a green color resistance block and a blue color resistance block; a display area of the array substrate comprises driving circuits arranged in an array mode,and the driving circuits are in one-to-one correspondence with the color resistance blocks; the display area comprises a first area and a second area surrounding the first area; and the second area comprises N transition zones which are sequentially arranged from the edge of the display area to the first area, wherein the area of the blue color resistance block of the ith transition zone is smaller than that of the blue color resistance block of the i+1th transition zone. The invention provides the display panel and the display device, so as to solve the problem that the blue light overflow at the edge of the display area of the existing display device is serious.

The invention discloses a light emitting key comprising an OLED (organic light emitting diode) light emitting screen body. The OLED light emitting screen body comprises an OLED base plate and an OLED encapsulation chip, wherein a positive pole layer, an organic electroluminescence layer and a negative pole layer are sequentially formed on the surface of the OLED base plate; the OLED encapsulation chip is arranged at the outer surface of the negative pole layer and is used for encapsulating the OLED light emitting screen body to a whole; and the positive pole layer or the negative pole layer or the organic electroluminescence layer is shaped like a character. The invention also discloses a keyboard utilizing the light emitting key. According to the light emitting key, only the character formed by a luminophor emits light, and therefore, the light emitting area is decreased greatly and the electric power is saved.

The invention provides an LED epitaxial structure and a preparation method thereof. An epitaxial wafer comprises a substrate, a first semiconductor layer, a multi-quantum well layer and a second semiconductor layer, the multi-quantum well layer comprises a quantum well layer and a composite quantum barrier layer; the composite quantum barrier layer comprises a Be-doped Al < z > Ga < 1-z > N layer, and the doping concentration of Be and the Al component in the Al < z > Ga < 1-z > N layer are gradually increased in the direction from the N-type GaN layer to the P-type GaN layer, so that the problems that in the prior art, effective electron hole recombination mostly occurs in the last few quantum wells of the multiple quantum wells, the effective radiation recombination light-emitting area is small, the light-emitting efficiency is influenced, and the light-emitting efficiency is influenced are solved. Meanwhile, Mg doping ionization energy is high, the concentration of holes in P-type GaN is limited, and then radiation recombination efficiency is affected.

The invention discloses a single-transverse-mode linear polarization state large-divergence-angle laser light source for interference measurement. The single-transverse-mode linear polarization statelarge-divergence-angle laser light source comprises a laser, an optical fiber coupler, a standard single-mode optical fiber, a polarization controller and a large-numerical-aperture optical fiber; laser emitted by the laser is coupled into the standard single-mode optical fiber through the optical fiber coupler; the single-mode optical fiber passes through the polarization controller and then is connected with the large-numerical-aperture optical fiber through a mode field matching welding point; and finally the conducted laser is output through an optical fiber tapering output end. The laseris transitionally coupled to the large-numerical-aperture optical fiber by using the standard single-mode optical fiber; the laser transmission efficiency is improved through the mode field matching welding point; the single-mode optical fiber is coiled based on the stress birefringence principle, and the polarization state of the transmission laser of dissimilar welding optical fibers can be controlled; the output end of the large-numerical-aperture optical fiber is tapered, so that the light-emitting area of the output end can be reduced, and a laser divergence angle can be improved; finally, a large-divergence-angle laser light source with a single transverse mode and a linear polarization state is obtained, so that the background uniformity of interference fringes in the interference measurement is improved.