35results about How to "Improve Brightness Consistency" patented technology

A front light liquid crystal display device comprises a liquid crystal display panel, a light guide plate, a light source optically connected to the light guide plate and irradiating light to the light guide plate, and supports and fixes the liquid crystal display panel in an area outside the display area of ​​the liquid crystal display panel The member is held in a space with a predetermined gap with the light guide plate. The space maintaining member has a base member and an adhesive material layer on at least one side of the base member. The layer of adhesive material has a lower refractive index than the light guide plate.

The invention relates to a signal lamp, in particular to a railway LED energy-saving signal lamp. The railway LED energy-saving signal lamp comprises a light-emitting disc, a circuit module, a lens, a shell and a display system. A plurality of LED lamp beads are installed on the light-emitting disc and form a plurality of branches in a series-parallel manner to be arranged on the light-emitting disc in an array manner. The circuit module comprises a power input circuit, a DC-DC power module, a constant-current source drive circuit, a control circuit, a maintaining current load circuit and an alarm circuit. The output end of the DC-DC power module is connected with the input end of the constant-current source drive circuit, the input end of the control circuit and the input end of the alarm circuit. The output end of the constant-current source drive circuit is connected with the input ends of the LED lamp beads and the input end of the control circuit. The output end of the control circuit is connected with the input end of the maintaining current load circuit and the input end of the alarm circuit. The railway LED energy-saving signal lamp is good in compatibility, high in light emitting strength, good in labor saving effect, low in improving difficulty and improving cost and wide in application and popularization prospect.

The invention discloses a vertical cavity surface emitting laser structure and a manufacturing method. The method comprises the steps: respectively forming a first reflector layer, an oxide layer, a light-emitting layer and a second reflector layer, wherein the light-emitting layer is provided with at least one light-emitting region; and forming a circular electric isolation protection region right above each light-emitting region, performing proton or ion isolation injection on the region outside the electric isolation protection region to form an electric isolation region, wherein the electric isolation region at least covers the oxide layer outside the light-emitting region. According to the scheme, the coverage area of the electric isolation region limits the flowing path of the current so that the current flows through the non-insulation region surrounded by the electric isolation region and does not flow out of the electric isolation region after the voltage is applied to the positive electrode and the negative electrode of one light-emitting region, and the reliability of the laser is improved. Meanwhile, the current flowing through each light-emitting region is uniform so that the brightness consistency of each light-emitting region is high, and the quality of the vertical cavity surface emitting laser is improved.

The invention discloses a method for generating a panoramic image in a high dynamic range. The method comprises the following steps: S1, acquiring multi-exposure sequence images in different shootingdirections; s2, respectively splicing the image groups which are different in shooting direction and have the same exposure parameter to obtain a multi-exposure panoramic image sequence; s3, calculating a synthesis weight according to the exposure quality degree of each pixel point of the multi-exposure panoramic image sequence to obtain a multi-exposure weight sequence; s4, projecting the multi-exposure panoramic image sequence and the multi-exposure weight sequence to a spherical coordinate system; s5, calculating a Laplace pyramid of the multi-exposure spherical panoramic image sequence; s6, calculating a Gaussian pyramid of the multi-exposure spherical weight sequence; and S7, synthesizing the panoramic image Laplace pyramid and the weight Gaussian pyramid, and reconstructing to obtaina panoramic image with a high dynamic range. The panoramic image with the high dynamic range generated by the invention can record details of a bright part and a dark part at the same time, and the image quality is high.

The application discloses a concentrating module, a backlight module and a display device. The concentrating module comprises a bottom surface, a plurality of first optical surfaces and a plurality ofsecond optical surfaces, wherein the plurality of first optical surfaces and the plurality of second optical face surfaces s are each opposite the bottom surface; the first optical surfaces and the second optical surfaces form ribs, at least part of the regions of the first optical surfaces and / or the second optical surfaces is arranged with a concentrating microstructure, the pattern of the concentrating microstructure comprises at least one of a triangular wave, a sine wave and a trapezoidal wave and is disposed along the direction of the ribs, and the concentrating module can reduce the brightness difference between the edge region and the central region of the display device, and enhance the brightness of the edge region, so that the corresponding display device has better consistencyand superior display effect in the display region.

The invention relates to a control method for increasing brightness consistency, a brightness correction controller and a display device. The control method is used for increasing the brightness consistency of the display device, one panel of the display device comprises a plurality of sampling pixels, and each sampling pixel corresponds to a sampling coordinate value of the panel. The control method comprises the following steps of: receiving an input pixel; judging an adjacent sampling pixel of the input pixel according to one coordinate value of the input pixel and the sampling coordinate values of the plurality of sampling pixels; obtaining a brightness searching table of the adjacent sampling pixel, wherein each brightness searching table comprises a brightness correction value of one adjacent sampling pixel; respectively obtaining a specific brightness correction value corresponding to a gray value in the brightness searching table according to a corresponding gray value of the input pixel; and calculating a brightness correction value of the input pixel according to the coordinate value of the input pixel, the sampling coordinate value of the adjacent sampling pixel and the specific brightness correction value.

The invention discloses a display screen module structure and a manufacturing method of the display screen module. The display screen module structure includes: a frame body fixed on a circuit board, wherein the frame body includes a hole array and an osmotic pressure balance structure arranged around the hole array. In the display screen module formed by the display screen module structure disclosed in the present invention, the brightness consistency of the LED pixel units is improved, and the edge defects caused by the penetration of the sealant are eliminated.

The invention discloses an alternating current power supply electronic clock with a power saving structure, comprising an electronic clock main body, which is characterized in that the electronic clock is provided with a power-switching circuit capable of saving power, the power-switching circuit is positioned outside the electronic clock main body and connected with the electronic clock circuit of the electronic clock, transfers the voltage of an urban electricity power supply circuit into a direct voltage consistent with the time oscillating frequency of the electronic clock and outputs thedirect voltage to the power output end of the electronic clock circuit. The power-switching circuit comprises a rectifying circuit, an auto-excitation type intermittent oscillation circuit, an outputcircuit and a feedback circuit, wherein the auto-excitation type intermittent oscillation circuit comprises a switch transformer T1, a flux reset circuit, a power regulation chip IC1 and a supply circuit of the power regulation chip. The invention has the characteristics of high electric energy transformation efficiency, obvious energy saving effect, high stability of output voltage, little source effect and load effect, small volume, light weight, global utilization and the like.

The invention provides a display module and a brightness adjustment method of a display module. The display module comprises a panel assembly, a driving device and a brightness adjustment device. The driving device comprises a driving integrated circuit for driving the display module to be displayed at various brightness; and a communication module which communicates with an optical detection instrument, and after the optical detection instrument detects a maximum brightness value of the display module, obtains the detected maximum brightness value and sends the maximum brightness value to the driving integrated circuit, wherein the driving integrated circuit stores the maximum brightness value, or a brightness grade corresponding to the maximum brightness value or coding of the maximum brightness value in a predetermined memory of the driving device of the display module. The brightness adjustment device communicates with the driving device and adjusts the brightness of the display module. The device and method provided by the invention can reduce power consumption through reducing driving currents of a high-brightness display module, can prolong the service life, and enhances the brightness consistency.

The invention discloses a method for generating a high dynamic range panoramic image, comprising the following steps: S1, acquiring multi-exposure sequence images in different shooting directions; S2, splicing image groups in different shooting directions and having the same exposure parameters respectively, to obtain Multi-exposure panoramic image sequence; S3, calculate composite weight according to the degree of exposure of each pixel in the multi-exposure panoramic image sequence, and obtain the multi-exposure weight sequence; S4, project the multi-exposure panoramic image sequence and the multi-exposure weight sequence to the spherical coordinate system; S5, calculate the Laplacian pyramid of the multi-exposure spherical panoramic image sequence; S6, calculate the Gaussian pyramid of the multi-exposure spherical weight sequence; S7, carry out the panoramic image Laplacian pyramid and the weight Gaussian pyramid Synthesis, reconstruction to obtain panoramic images with high dynamic range. The high dynamic range panorama image generated by the invention can simultaneously record the details of the bright part and the dark part, and the image quality is high.

The invention provides a method for improving the brightness of a spliced image, and the method comprises the steps: determining a first common region shared by a first to-be-spliced image and a second to-be-spliced image, and respectively calculating the color mean values of the first to-be-spliced image and the second to-be-spliced image in the first common region, determining a target mean value of the first common region based on the two color mean values, and determining an adjustment parameter of the first common region according to the target mean value and the color mean values; determining a second common region shared by the second to-be-spliced image and the third to-be-spliced image, calculating color mean values of the second to-be-spliced image and the third to-be-spliced image in the second common region, and determining a target mean value of the second common region based on the two color mean values, determining an adjustment parameter of the second public area according to the target mean value and the color mean value; determining an adjustment parameter of a central region of the second to-be-spliced image according to the adjustment parameters of the two common regions; and respectively adjusting display images of the corresponding regions based on the adjustment parameters.

The disclosure provides a method for improving brightness of mosaiced images, which comprises the following steps: determining a first common area shared by a first image to be mosaiced and a second image to be mosaiced, calculating color average values of the first image to be mosaiced and the second image to be mosaiced in the first common area respectively, determining a target average value of the first common area based on the two color average values, and determining an adjustment parameter of the first common area according to the target average value and the color average values; determining a second common area shared by the second image to be mosaiced and a third image to be mosaiced, calculating color average values of the second image to be mosaiced and the third image to be mosaiced in the second common area, determining a target average value of the second common area based on the two color average values, and determining an adjustment parameter of the second common area according to the target average value and the color average values; determining an adjustment parameter of the central area of the second image to be mosaiced according to the adjustment parameters of the two common areas; adjusting display images of respective areas based on the above adjustment parameters.

The present application relates to the technical field of liquid crystal display, and in particular, to a backlight assembly, a liquid crystal display device, and an electronic device. The backlight assembly includes a light guide plate and a backlight light source, the light guide plate includes a light guide plate body and a plurality of wedge-shaped structures, the light guide plate body includes a first surface and a second surface, and the plurality of wedge-shaped structures are arranged at intervals on one end of the first surface close to the second surface; The backlight light source is arranged adjacent to the second surface of the light guide plate body, and each backlight light source is arranged between two adjacent wedge-shaped structures, so that part of the light emitted by the backlight light source is reflected by the wedge-shaped structure and enters the light guide plate body. Part of the light is reflected in the main body of the light guide plate, and the incident angle of the reflected light of the part of the light on the first surface is greater than or equal to the critical angle of total reflection of the light entering the air from the main body of the light guide plate, thereby improving the brightness of the light guide plate. The liquid crystal display device includes a backlight assembly. The electronic equipment includes a liquid crystal display device. In the above manner, the brightness uniformity of the light guide plate is improved.

The embodiment of the invention provides an LED light emitting driving circuit used for driving an LED light emitting array. The LED light emitting array is formed by the parallel connection of multiple branches. Multiple LEDs are connected in series in each of the branches. A bipolar junction transistor (BJT) for brightness control is connected in series in each of the branches. The collector and emitter of the BJT are connected in series in the branches. The base electrode of the BJT is used for inputting a driving signal. According to the LED light emitting driving circuit provided by the embodiment of the invention, the brightness consistency of an LED display array can be improved.

An LED light source, comprising one or more LED modules (100-800), wherein each of the LED modules (100-800) comprises an LED (110) and a circuit board (120), the LED (110) being fixed to the circuit board (120), electrodes (121, 122) being arranged on the circuit board (120), and pins of the LED (110) being electrically connected to electrodes (121, 122); the LED light source also comprises a bearing structure (10), wherein the bearing structure (10) is provided with a plurality of bearing surfaces (13, 14, 23, 24, 33, 34) for bearing the LED modules (100-800), and various bearing surfaces (13, 14, 23, 24, 33, 34) are arranged such that the normal directions of at least two bearing surfaces are different; and the LED light source also comprises a drive circuit arranged in an enclosure (1) thereof, wherein various LEDs (D3-D10) are connected in series between a current output end and a current input end of the drive circuit. By adopting the LED modules (100-800) with a modular design and the bearing structure (10) having bearing surfaces (13, 14, 23, 24, 33, 34), a plurality of LED modules (100-800) are combined easily, the design and transplantation are convenient, and the illumination angle is adjusted easily, the lighting efficiency is high, and the lighting intensity is more uniform. In addition, the drive circuit is arranged in the LED light source, thereby being able to reduce system costs, reduce the volume, facilitate the use, and reduce the external influence.

An embodiment of the present application provides a method for preparing a composite optical film, the method includes: S1: preparing a barrier layer, the barrier layer including at least a first inorganic layer; S2: preparing a porous substrate, the porous substrate is located on the barrier The first surface of the layer, the porous substrate includes a plurality of concave holes arranged in an array; S3: preparing an inorganic nanoparticle-first polymer interpenetrating network, the inorganic nanoparticles are combined with the first monomer through a surface modifier. forming the interpenetrating network through pre-polymerization; S4: preparing a filling layer, adding a second monomer to the inorganic nanoparticle-first polymer interpenetrating network to form a mixed precursor solution, and filling the mixed precursor solution in the In the concave holes of the porous substrate, the filling layer is formed by final polymerization, and the filling layer is an organic-inorganic hybrid polymer transparent gel material with hygroscopic properties, and the gel material swells after absorbing moisture to release the filling layer from the surface. The second surface is protruded to form a microlens array. The preparation method of the composite optical film of the present application can not only provide the AMOLED display panel with the ability to block water vapor and oxygen for a long time, but also make up for the defect of low luminous efficiency caused by the deterioration of the light-emitting layer in the AMOLED light-emitting device over time.