717results about How to "Guaranteed brightness" patented technology

The present invention relates to an LED light bulb. The LED light bulb comprises a base and a hollow shell. The base has a closed end, an open end and a sleeve between the two ends. The shell is connected to the open end of the base. The LED light bulb comprises at least two LEDs substantially linearly arranged within the shell. By arrangement of multiple LEDs one or more strands the luminance or brightness of the bulb is improved compared with a bulb with one LED or with several horizontally arranged LEDs in a common place, without sacrificing the advantage of energy saving.

The invention discloses a double exposure implementation method for an inhomogeneous illumination image. The double exposure implementation method for the inhomogeneous illumination image comprises the following steps: obtaining an illumination image; obtaining a reflection image; overlaying the illumination image with the reflection image to obtain the global enhancement effect; fusing the global enhancement effect with the original image; and carrying out color correction on an enhancement result to obtain a visual matching image. According to the double exposure implementation method for the inhomogeneous illumination image, which is disclosed by the invention, the smooth property of the illumination image is constrained, and the reflection image is sharpened by the visual threshold value characteristic to guarantee the detail information of the image; with an image fusion method, the luminance, the contrast ratio and the color information of an original image luminance range can be effectively kept; because the characteristic of the human eye visual perception of average background brightness is introduced in, the fused image can be used for effectively eliminating image color distortion near a shadow boundary; the color of a low-illuminance zone is restored by the color correction technology; the colors of the low-illuminance zone and the luminance range are free from obvious distortion; the continuity is good; and the visual effect is more nature.

The invention uses the liquid crystal near crystalline state as main material, to be filled between two mediums via special technique, as two layers of glasses, one glass layer and one plastic film layer, or two plastic film layers. When the electrode on the glass or the film is powered, the interlayer liquid crystal distribution is changed, to supply electric control light adjustment function to the two mediums, that using different controlled voltage signal between the transparent and frosted shield to freely switch, and via mixed with a binary paint, the invention can realize electric control switch between transparent and color shield (colorful or black), and via dividing electrode, the invention can display patter or word. The invention has wide application in decoration, which needs private control area and vehicle electric field, and the electric information display technical field.

The invention discloses an image defogging method based on dark channel information, belonging to the technical field of image treatment and computer vision. The method disclosed by the invention comprises the following steps of: calculating the minimum value of each pixel of each color channel of an input image via a minimum value filter; then calculating dark channel counting values of the image under different scale parameters and carrying out Gaussian smoothing filter on the dark channel counting value corresponding to each scale parameter; distributing different weight values to the filtered dark channel counting values according to different scale parameters; and carrying out weighted optimization on the dark channel counting values and calculating a transmission coefficient of the scene so that the defogging of the image is realized. The application of the invention can avoid complex soft matting optimization steps and computing complexity of the defogging; the image with high quality can be obtained after the defogging; and the requirement on real-time treatment application can be met.

The invention discloses a colorful optical filter base plate with fixed spacers and a manufacturing method thereof. The colorful optical filter comprises a transparent substrate, a colorful film layer, a latticed black matrix, a flat layer, a transparent electrode layer and a columnar spacer. Firstly, the well-known colorful optical filter base plate is coated with transparent photosensitive material and then exposed by a mask with preset patterns, after being treated by adopting micro-lithography, the transparent columnar or frustum-shaped spacers are directly formed on the colorful optical filter base plate; the central shafts of the spacers are perpendicular to the surface of the flat layer and corresponding to the intersection of gridlines of the black matrix. Since the spacers are directly formed on the colorful optical filter base plate and the height, distribution and density thereof are all preset and controllable, the liquid crystal thickness (CELL GAP) between LCD base plates can be kept uniform, thus avoiding arranging the spacers within a pixel to affect the porosity of LCD.

The invention discloses a method for eliminating dynamic streaking of liquid crystal display. The concrete steps include: (a). convert images of two following frames into black and white brightness signal images; (b). compare the pixels at the corresponding position in the black and white brightness signal images and retain the pixel with a smaller grayness value; (c). form a frame of black frame insertion images (Gn) with the group of pixels obtained after the comparison of each pair of pixels; (d). insert the black frame insertion images (Gn) into images of two following frames. The method of the invention is to compare continuous image signals of two frames, and form a frame of 'new grayness distribution signal' with the darker pixels of each pixel position as the black frame insertion image to reach the purpose of lowering MPRT and eliminating streaking of dynamic images. The invention can not only overcome the shortcoming of the low efficiency of the black frame insertion technique, but also overcome the inadequate elimination of dynamic blurs and the high decline of the contrast in gray frame insertion technique. In addition, the method of obtaining insertion frames is simple and accessible, thus greatly saving the production cost.

The embodiment of the invention provides quantum dot ink and a preparation method thereof and relates to the technical field of quantum dots, wherein the preparation method of the quantum dot ink comprises: carrying out ligand exchange on a quantum dot stock solution and a ligand in the argon shield and under the condition of 50-70 DEG C; transferring the solution obtained by ligand exchange into a centrifugal bottle, adding a precipitation promoting additive and a quantum dot dispersion promoting additive, and carrying out centrifugal purification to obtain a quantum dot precipitate, carrying out vacuum drying on the quantum dot precipitate to obtain quantum dot powder; and mixing the vacuum dried quantum dot powder with a non-polar solvent according to a certain mass ratio to obtain the quantum dot ink. According to the quantum dot ink and the preparation method thereof provided by the invention, the prepared quantum dot ink can be used for an ink-jet printing method, and most of quantum dots are about to be remained after a volatile solvent in the ink is volatilized, so that the requirement for the quantity of current carriers in the quantum dots when a photoelectric device is conducted as well as the brightness and the definition when pictures and characters are imaged are guaranteed.

The invention discloses a curved screen and flat panel display module full-lamination method, which comprises the following steps: designing and manufacturing a frame, fixing a frame-pasting curved screen and the frame through a positioning fixture, injecting liquid optical cement, putting a flat panel liquid crystal display module, fixing through the positioning fixture to form an integrated screen, putting the positioning fixture and the integrated screen into a heating device and carrying out heating curing, removing the positioning fixture and the integrated screen out of the heating device after completing the above steps, dismounting the positioning fixture, removing spilled cement residue at the edge of the frame and completing lamination. The invention also discloses a curved screen and flat panel display module full-laminated integrated screen prepared according to the above processing method. By arranging the frame between the curved screen and the flat panel liquid crystal display module, lamination of a curved-surface product is converted into traditional flat-panel type lamination. The operation steps are simple. Investment in equipment and fixture is less. Batch production is convenient to realize.

The invention provides a quantum dot light-emitting diode and preparation method thereof. The preparation method includes printing a mixed organic solution including poly(3,4-ethylenedioxythiophene) and polystyrolsulfon acid salt, an organic solution including a triphenyl diamine polymer, an organic solution including quantum dots and an organic solution including zinc oxide on a conductive substrate surface in sequence through an ink-jet printing method to obtain a primary quantum dot light-emitting diode; and depositing an electrode on the non-conductive substrate side of the obtained primary quantum dot light-emitting diode to obtain the quantum dot light-emitting diode. The preparation method realizes large-area simple preparation of quantum dot light-emitting diode by adoption of an ink-jet printing technology combined with a defined proportion of ink, and the operation is simple; and the ink used by the preparation method contributes to improvement of printing resolution, ensures uniformity of printing, and facilitates electric conduction light emission of the diode.

The embodiment of the invention provides a side-entering type backlight module and a display device, and relates to the technical field of the display device. The thickness of the side-entering type backlight module is reduced, and the thin design of the side-entering type backlight module is facilitated. The side-entering type backlight module comprises a light guide plate which includes an upper surface for light out, and a lower surface opposite to the upper surface. The lower surface is provided with a refraction coating layer. A refractive index of the refraction coating layer is less than the refractive index of the light guide plate. A reflection coating layer is arranged on a surface of the refraction coating layer far from the light guide plate, and is used for reflecting the light on the reflection coating layer. The side-entering type backlight module is used for the display device.

The invention provides a backlight module. The backlight module comprises a rubber frame, a light guide plate, a light-reflecting sheet, a lamp source and an optical film, wherein the optical film and the light guide plate are sequentially overlapped on the light-reflecting sheet; the rubber frame is wound around the peripheries of the light-reflecting sheet, the light guide plate and the optical film; the backlight module also comprises a radiating plate; the lamp source comprises a lamp strip circuit board and a light-emitting body and is positioned between the light-incidence surface of the light guide plate and the rubber frame; the light-reflecting sheet and the lamp strip circuit board are arranged on the radiating plate and are positioned on the same plane; a part of the lamp strip circuit board is clamped by the light guide plate and the radiating plate. The invention also discloses a display device.

The invention discloses a light source output control method, comprising: non-coaxially arranging a first color wheel and a second color wheel which are respectively provided with a first mark and a second mark, and synchronizing the first color wheel and the second color wheel according to an obtained first set of induction signals of a first synchronous mark and a second synchronous mark; and obtaining second induction signals from the output light path of the second color wheel, and synchronizing the first color wheel and the second color wheel again according to the second induction signals, wherein the second induction signals are voltage waveform signals corresponding to different colors, and sequentially output three primary colors when passing the second color wheel. Accordingly, the method can synchronize the two color wheels accurately, eliminate color mixing in outputting the second color wheel, improve the homogeneous light purity and brightness of the three primary colors, and provide a high quality lighting light source. The invention also provides a control system corresponding to the light source output control method, and a laser projection device using the control system and method.

The invention discloses a screen brightness setting method, a mobile terminal and a computer readable storage medium. The method comprises the steps of acquiring first state information of the mobileterminal; judging whether a light sensor of the mobile terminal is shielded according to the first state information of the mobile terminal; and when a judgment result is yes, setting current brightness of a screen of the mobile terminal according to the brightness of the screen when the light sensor is not shielded last time. According to the technical scheme of the method provided by the invention, the situation that the light sensor of the mobile terminal is shielded by a hand of a user can be automatically detected, intensity of light sensed by the light sensor is reduced, but the brightness of the screen is not controlled to be reduced accordingly, the brightness of the screen is set to be the brightness of the screen when the light sensor is not shielded, and thus the situation thatthe brightness of the screen is enough for the user to use the mobile terminal is ensured.

The invention discloses an automatic traceless fusion welding technology of a thin-wall stainless steel clean pipeline. The technology comprises the following steps of: step 1, treating a welding port: milling pipe end welding surfaces of two welded pipeline segments into planes; step 2: assembling welded junctions; step 3: carrying out point welding; step 4: carrying out fusion welding: carrying out fusion welding on the two pipeline segments by adopting an argon tungsten-arc welding machine, wherein the fusion welding process comprises the following steps of: introducing a protective gas before welding, welding the two welded pipeline segments by adopting the argon tungsten-arc welding machine, and introducing argon continuously during the welding process and introducing a protective gas continuously after welding; and step 5: sealing and protecting after welding. The automatic traceless fusion welding technology of the thin-wall stainless steel clean pipeline provided by the invention is reasonable in design, is simple and convenient to operate, is convenient to achieve, has a good pipeline cleanness control effect, is high in welding quality, and can effectively solve the problems of high labor intensity, low efficiency, high production cost, severe welding junction oxidation, poor formation inside and outside a welding line, difficulty in controlling cleanness in pipelines, poor cleanness control effect and the like in an existing welding method.