34results about How to "Avoid brightness loss" patented technology

Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintains and/or enhances brightness, prevents yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the oxidative agents produce a synergistic effect not previously identified in the paper process.

Compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The composition and method maintains and/or enhances brightness, prevent yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the described agents produce a synergistic effect not previously identified in the paper process.

The invention provides a backlight module. The backlight module comprises a back board, a backlight source, a guide plate, a light guide plate, a reflective piece, an optical membrane set, a rubber frame and a baffle wall, wherein the backlight source is arranged in the back board; the light guide plate is arranged in the back board and is opposite to the backlight source; the reflective piece is arranged between the guide plate and the back board; the optical membrane set is arranged on the guide plate; the rubber frame is arranged on the back board; the baffle wall is arranged between the light guide plate and the rubber frame and is opposite to the backlight source; the trapezoidal baffle wall is provided with a bevel close to the backlight source; the bevel is provided with a reflective layer; and light incident to the baffle wall is reflected to the light guide plate by arranging the baffle wall with the reflective layer in a position opposite to the backlight source between the rubber frame and the light guide plate, so that the light is prevented from being refracted from a gap between the optical membrane set and the light guide plate to form a bright line, thereby the bright line problem of an incident side in a side incident backlight module is solved well. The backlight module provided by the invention has higher light coupling efficiency; and meanwhile, with the adoption of the backlight module, the brightness of the light guide plate is improved, brightness loss of light emitted by an LED (light emitting diode) light source is avoided, and the utilization ratio of the LED light source is improved.

The embodiment of the invention provides an image display method and device, electronic equipment and a readable storage medium, and relates to the technical field of image display. The method comprises the steps of obtaining a primary color component maximum value and a primary color component average value in a current frame image according to three primary color components of each pixel point in the current frame image to be displayed; performing weighted summation on the obtained values to obtain a target brightness reference value; obtaining a target pulse width modulation duty ratio according to a corresponding relation between a preset brightness reference value and the pulse width modulation duty ratio and the target brightness reference value; and adjusting the backlight brightness of the backlight module by adopting the target pulse width modulation duty ratio, and displaying the current frame image. Therefore, the backlight brightness is adjusted according to the target brightness reference value corresponding to the actual brightness of the current frame image, and the problems of poor backlight control effect and poor display effect caused by large deviation between the calculated brightness and the actual brightness of the frame image can be effectively improved.

The present invention provides a color filter substrate and a manufacturing method thereof, an organic electroluminescent display panel and a display device. The color filter substrate of the present invention comprises a first base, and a plurality of color filters and black matrixes arranged on the first base, wherein two adjacent color filters are at least partially overlapped, and each black matrix is at least partially arranged at the overlapped position of the two adjacent color filters; and the color filter substrate further comprises a first adhesive layer for eliminating section differences between the adjacent color filters or between the color filters and the black matrixes, and the first adhesive layer is provided with scattering particles therein. The color filter substrate can be used in the organic electroluminescent display panel.

A Penetrant compound that preserves and enhances the brightness of a ligno-cellulosic material comprising (i) a reductive nucleophilic agent and (ii) a chelant in a paper or tissue machine. This Penetrant compound preserves and enhances the brightness of a ligno-cellulosic material when applied during different stages of the papermaking process. Penetrant compound maintains and/or enhances brightness, prevent yellowing, and enhances the performance of optical brighteners of pulp or a paper sheet produced by methods wherein the penetrant compound is applied in the papermaking process.

A method of uniform distribution for increasing a display rate. For data to be displayed, dividing a complete effective output enable (OE) time that is greater than one serial shift cycle into several unit serial shift cycles and uniformly distributing the effective OE time for display. The method implements the uniform distribution of the display time to the maximum extent by using an OE signal under the condition that the whole display time remains unchanged, thereby increasing effective output number of the uniform distribution, uniformly maintaining a display effect and steadily improving a refresh rate effect, so as to effectively increase a display quality and avoid a significant loss of brightness.

The invention discloses a benchmark brightness obtaining method which comprises the following steps: A1. using preset brightness to brighten a screen to be measured; A2. acquiring the current image data of the screen to be measured; A3. judging whether the image data is supersaturated or not, if supersaturated, executing step A4, if not, obtaining the benchmark brightness by dividing coefficient Xby the current brightness of the screen, wherein the coefficient X is more than or equal to 2 and less than or equal to 5; A4. reducing the screen brightness; and then, repeating steps A2 and A3. Theinvention also discloses point-to-point correction system and method; benchmark brightness data is adopted for point correction, thereby avoiding the unnecessary brightness loss and improving the correction precision.

The invention discloses a collimation membrane, a collimation backlight module, a display module and a display device, and relates to the technical field of the collimation membrane. The collimation membrane is designed for solving the problem that that the collimation membrane in the prior art can cause the brightness loss. The collimation membrane comprises a collimation membrane body and multiple transmitting lattice points; multiple transmitting lattice points are dispersed at one side surface of the collimation membrane body; the transmitting lattice points have a first surface, and in the first section of the transmitting lattice points, the included angle between the tangent line of each point on the first surface and the bottom surface of the transmitting lattice points is an acuteangle, and the first section is the section parallel to a height direction of the transmitting lattice points and intersected with the first surface. The collimation membrane disclosed by the invention can be used for collimating the backlight.

The invention relates to a predistortion head up display image anti-aliasing method based on edge direction correlation and belongs to the field of digital image processing. The method includes usingFIFO for row buffering and column buffering of an input DVI image, and extracting 9 pixel values in a 3X3 window; using a quick sorting method to find a maximum value and a minimum value for 9-point pixel data in a template window; using maximum and minimum values in a 3X3 template to determine the correlation of data in a template, and distinguishing an edge region and a non-edge region of the image; for the edge region of the image, using a direction template to determine the edge direction and then performing the weighting process after the distance parameter normalization; for the non-edgeregion, performing direct delay output, and causing the delay time to be consistent with the anti-aliasing processing time; and finally performing gray-scale transformation on overall character images by utilizing a segmentation function curve according to inherent characteristics of a head up display raster image. According to the method, the display quality of the head up display raster image can be improved as a whole, and the gray scale loss and the brightness loss caused by the anti-aliasing process are reduced.

The invention relates to a device for outputting visual information in a motor vehicle, comprising a lighting device (1) which is provided for arrangement in the passenger compartment of the motor vehicle and has one or more light sources (5) for generating light (L) and a disc (3) which bounds the passenger compartment of the motor vehicle and has an inner face (301) directed towards the passenger compartment of the motor vehicle and an outer face (302) directed towards the outside of the motor vehicle. A symbol (9), which has a structure for scattering light at least into the passenger compartment of the motor vehicle, is formed on the disc (3), wherein the lighting device (1) and the symbol (9) are arranged with respect to one another in such a way that the light (L) of the lighting device (1) is incident on the symbol (9) during the operation of said lighting device (1), said light at least partially originating from the passenger compartment of the motor vehicle and passing via the inner face (301) of the disc (3), which symbol (9) lights up owing to the scattering of light on its structure.

The invention discloses a backlight module and a display device. The backlight module comprises a reflective sheet, a light guide plate, a light guide layer and a reverse prism light guide film, wherein the reflective sheet, the light guide plate, the light guide layer and the reverse prism light guide film are sequentially stacked. An antireflection layer is arranged on at least one side of the light guide layer. According to the backlight module and the display device, which are provided by the invention, the problem that the light guide plate is scratched is solved to some extent.

A light directing device for a connector includes a translucent tube having a slanted portion and a straight portion. The slanted portion has a perpendicular face adapted to be engaged with a side face of a light emitting diode. A reflection seat is adapted to be securely connected to the connector and having at least one pair of covering plates. Each pair of covering plates defines therebetween a gap for receiving therein the light emitting diode.

The invention provides a drive method and device for a display panel and a display device. The drive method for the display panel is applied to the display panel; a data drive circuit and a plurality of data lines are arranged on the display panel. The drive method for the display panel comprises the following steps: in a display time quantum of each frame, setting a corresponding slew rate for each data line according to routing resistance, inside the display panel, of the corresponding data line, wherein the slew rates set for the data lines, with the distance from near to far to the data drive circuit on the display panel, are gradually increased; and in the display time quantum of each frame, loading data voltage signals with the corresponding slew rates by the data drive circuit for the data lines. The drive method and device provided by the invention solves the problem that brightness loss cannot avoided while display brightness unevenness is improved in the prior art.

The embodiment of the present invention discloses a display device, which includes: a backlight module and a display panel located on the light output side of the backlight module; the display panel includes a fingerprint recognition area; the backlight module includes a light guide plate and a side-type light source; The light plate includes a light exit surface and a light entry surface; the side-input light source is located on one side of the light entry surface; at least one groove structure is provided inside the light guide plate and on the side facing the light exit surface, and the fingerprint recognition area is perpendicular to the light exit surface. The projection at least partially covers the vertical projection of the groove structure on the light-emitting surface; the groove structure is provided with a reflective layer; the initial light beam emitted by the side-type light source is reflected to the touch body through the reflective layer; or, the initial light beam emitted by the side-type light source After being reflected to the bottom of the groove structure by the reflective layer, it is reflected to the touch body. The purpose of increasing the light intensity of the fingerprint identification area in the display panel can be achieved by using the embodiments of the present invention.