49results about How to "Uniform luminous intensity" patented technology

The invention provides a display panel and a display device. The display panel comprises a pixel driving circuit, a driving transistor and a first connecting portion. The pixel driving circuit comprises scanning lines, data lines and a power line, the scanning lines are used for transmitting scanning signals, the data lines are used for transmitting data signals, and the power line is used for transmitting constant voltage signals; the scanning lines are positioned on a first metal layer, the power line is positioned on a second metal layer, the data lines are positioned on a third metal layer, and the second metal layer is positioned between the first metal layer and the third metal layer; a gate electrode of the driving transistor is positioned on the first metal layer and is connected with the first connecting portion; the power line is positioned between the data lines and the first connecting portion. The display panel and the display device have the advantages that coupling parasitic capacitance of the data lines and first coupling portion can be diminished, offset of driving currents of the driving transistor can be diminished, and interference on the luminescence intensityof organic luminescence components can be diminished.

Disclosed is an edge-lit backlight module having a rectangular back panel with a reflective microstructure, and a first light portion with an inclined plane or a camber is provided for reflecting lights emitted from a plurality of LEDs and with a relatively smaller normal included angle, and a second light portion is provided for reflecting a light with a slightly greater included angle, and a third light portion is provided for reflecting the light with the greatest included angle to guide lights of different intensities to different paths and project the lights to every position of a front panel, so as to achieve a light extraction efficiency with a uniform distribution of luminous intensity of an LED light source.

The invention relates to a high-quality quantum dot fluorescent thin-film material and a preparation method thereof. The preparation method comprises the following steps: preparing a quantum dot solution; then preparing a polymer, adding the quantum dot solution into the polymer, carrying out placing in a mold, and carrying out cooling and curing so as to obtain a polymer-quantum dot bulk material; subjecting the polymer-quantum dot bulk material to mechanical cutting, and adjusting cutting parameters so as to be able to obtain a compact quantum dot fluorescent thin film with different thicknesses; and coating the prepared quantum dot fluorescent thin film on a thin-film protection layer so as to prepare the high-quality quantum dot fluorescent thin-film material. According to the invention, the prepared high-quality quantum dot fluorescent thin-film material has the advantages of high yield, good stability, uniform luminous intensity, wide color gamut, safety, environmental protection, controllable thickness, good compactness, high mechanical strength, etc; meanwhile, the method is simple and practical, has strong operability, and is applicable to mass preparation of quantum dot fluorescent thin films.

The present invention relates to a color sorting apparatus which efficiently sorts products or articles in a leaf state (hereinafter, referred to as ''leaf products'') such as green tea, black tea, chrysanthemum, herbs and the like, each of which has a low specific gravity and drastically varies in size and color. The color sorting apparatus is configured such that a reflection chamber (5) is arranged in a frame (3) in the lengthwise direction to transmit and reflect light emitted by a light source, an annular reflection surface (10) is formed at the surface of the reflection chamber (5), light-emitting diode (LED) arrays (8, 9) are installed at the top and bottom of the reflection chamber (5), respectively, a transparent window (12) is arranged at the front surface of the reflection chamber (5) to enable a leaf product (2) to move along the transparent window (12), a slit (15) is formed at the rear surface of the reflection chamber (5) to enable images of the leaf product (2) to be captured by a CCD camera (16), and a leaf product (2a) determined to be a defective product is quickly removed by the high-pressure air jetted by an ejector (14) installed below the front surface of the frame (3).

A light-emitting element forming a two-electrode structure on one face of a semiconductor light-emitting functional layer can obtain uniform luminous intensity along the length direction. The semiconductor light-emitting functional layer (20) which is formed on a Si substrate (11) has a laminating structure composed of a N type GaN layer (a first semiconductor layer) (21), a MQW layer (22), and a P type GaN layer (a second semiconductor layer) (23). A surface (a main face) of the P type GaN layer forms a transparent electrode (31) by extending from the other end part (the left end part) side towards the right end part side. An N-side electrode (34) is formed on the right end part side area. A P-side electrode (33) is formed on the left end part side area. The width of the transparent electrode (31) is gradually increasing from the left end part to the right end part. Therefore, the transparent electrode (31) limits the expansion of a current flowing vertically inside the MQW layer (22) on a side adjacent to the P-side electrode (33).

The SEM has a dynamic range reference value setting unit for setting dynamic range reference values, a dynamic range adjustment unit for receiving an observation image signal delivered out of a secondary electron detector, adjusting the dynamic range of the observation image signal on the basis of the dynamic range reference values and outputting the thus adjusted observation image signal as an observation image signal after adjustment, a display image generation unit for determining luminous intensity levels of individual pixels of an image to be displayed based on the observation image signal after adjustment to generate a display image, a histogram generation unit for generating a histogram of luminous intensity levels of the display image and extracting, as a luminous intensity peak value, at which the frequency of luminous intensity is maximized, and a display unit for displaying the generated histogram and the extracted luminous intensity peak value.

In a light-emitting element forming two electrodes on one surface of a semiconductor light-emitting function layer, high light-emitting efficiency is obtained, and uniform light-emitting strength is obtained in the surface. In the light-emitting element (10), (1) an n side contact opening (a first opening part) (42) and a p side contact opening (a second opening part) (41) are formed via respectively along two straight lines in parallel extension to two sides (an upper side, a lower side) oppositely disposed in a rectangle, (2) between the two straight lines, a plurality of gaps (transparent electrode opening parts (31)) between transparent electrodes (30) extending along the direction perpendicular to the two straight lines are formed, and therefore, uniformity of current without increase of light-shielding area is performed, and light-emitting uniformity is realized.

An arrayed LED area light source belongs to the field of optical detection and is capable of vertically illuminating sample solution. Arrayed LEDs are mounted on one surface of a circuit board, a circular hole is reserved at the center of the circuit board, a concave reflector is mounted on one surface, mounted with the LEDs, of the circuit board, a front convex lens is arranged on the other surface of the circuit board, a sample reservoir is arranged between the front convex lens and a rear convex lens, a light-splitting optical system is arranged behind the rear convex lens, and a slot is reserved on the light-splitting optical system. By above technical scheme, the arrayed LED area light source has the advantages that a plurality of LEDs are utilized as light sources to combine the arrayed LED area light source; is uniform in luminous intensity, good in heat stability and long in service life; and improves detection accuracy of the sample solution when being matched with a double focusing optical system. The arrayed LED area light source can be widely used to a detecting instrument of a light-splitting system.

The invention discloses an organic light-emitting device. The organic light-emitting device comprises a light-transmitting substrate, a first transparent electrode layer, a reflecting layer, a second transparent electrode layer, an organic light-emitting functional layer, a semitransparent electrode layer and a light compensating layer which are laminated in sequence, wherein the light-transmitting substrate comprises a first light-emitting surface and a covering surface which are arranged oppositely; the first transparent electrode layer covers the covering surface; the reflecting layer covers the surface of the first transparent electrode layer in a scattered manner, thereby forming a light-shielding region; the area ratio of the reflecting layer to the first transparent electrode layer is 20-80 percent; the surface of the reflecting layer not covering the first transparent electrode layer forms a light-transmitting region; the second transparent electrode layer covers the light-shielding region and the light-transmitting region; the organic light-emitting functional layer covers the surface of the second transparent electrode layer; the semitransparent electrode layer covers the surface of the organic light-emitting functional layer; and the light compensating layer only covers the surface of the semitransparent electrode layer corresponding to the light-transmitting region. The two light-emitting surfaces of the organic light-emitting device are uniform and consistent in light-emitting intensity. The invention further discloses a manufacturing method of the organic light-emitting device.

The invention discloses a telomerase activity detection method based on an electrochemical luminescence cascade amplification principle, which belongs to the technical field of telomerase activity detection. The invention provides the high-sensitivity telomerase activity detection method based on the electrochemical luminescence cascade amplification principle by utilizing performance that telomerase can execute adding a repetitive sequence and combining an electrochemical luminescence amplifying signal group linearity and arborescence terpyridyl ruthenium polymer electrochemical luminescence method. The method provided by the invention has the following advantages of (1) high sensitivity; (2) probe stability: wherein a linear and arborescence terpyridyl ruthenium polymer is used as an electrochemical luminescence amplification part of a probe, the performance is stable, and the polymerization degree and the luminescent intensity are uniform; (3) simple and fast detection process: wherein telomerase activity monitoring can be carried out through a simple telomerase extracting process, the time consumption is short, an amplification step is saved, and the detection is carried out quickly; (4) low cost.

The invention relates to the technical field of curing, in particular to a UV LED (ultraviolet light-emitting diode) curing light for printing. The UV LED curing light for printing comprises a lamp cover; a substrate is arranged in the lamp cover; the substrate is provided with a plurality of ultraviolet lights; the ultraviolet lights are rhombic; four end points of each rhombic ultraviolet light are respectively provided with a UV LED chip. The UV LED curing light disclosed by the invention has the following advantages: 1, by adopting the rhombic ultraviolet lights with the UV LED chips, the parallel half angle of light source projection is less than 2 degrees, and the luminous intensity is more uniform; 2, compared with a traditional mercury light, the UV LED curing light has the advantages that the energy is saved by 80 percent, a light tube does not need to be replaced, and cooling water is not needed; the UV LED curing light can be turned on and off, and has no stand-by losses; 3, the UV LED curing light does not contain infrared rays, film expansion and contraction is avoided, and the image transfer quality is improved; 4, the UV LED curing light does not contain mercury, ozone cannot be generated, and the pollution is small; 5, the service life exceeds 10000 hours, and the property is stable.

The invention relates to an LED (light-emitting diode) lamp, particularly a wide-angle LED bulb lamp shade which comprises a hemispherical lens body, wherein the center of sphere of the hemispherical lens body is provided with a hemispherical lamp trough matched with an LED lamp; the surface of the hemispherical lens body is completely or partially provided with a partial-transmission/partial-reflection half-reflection cambered surface; and from the center to the periphery, the light transmission of the half-reflection cambered surface gradually increases, and the light reflection gradually decreases. By using the invention, the LED bulb lamp has the advantages of wider light emitting angle and uniform light emission.

A power control method and system of a lamp are provided. The method includes supplying, by a controller, the lamp with electric power and selecting an illumination characteristic data of the lamp changed from a point when the electric power starts to be supplied to the lamp. The duty of voltage supplied to the lamp is variably adjusted, by the controller, based on the illumination characteristic data. In addition, the controller counts a first elapsed time that elapses from a first point when the electric power supplied to the lamp is turned on, and variably adjusts the duty of the voltage supplied to the lamp based on the counted first elapsed time.