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

The invention relates to a novel optical protection film, and particularly relates to a light transmission film or plate for preventing blue light and ultraviolet light and an application thereof. In order to solve a problem that the current light transmission film or plate does not have a function of preventing blue light and ultraviolet light, the invention provides a light transmission film or plate for preventing blue light and ultraviolet light and an application thereof. The light transmission film or plate comprises a function layer, a base material layer and a protection layer; one side of the base material layer is provided with the function layer, and the other side of the base material layer is provided with the protection layer; a raw material of the base material is composed of the following materials: a resin master batch: 70,0-99.0%; a plasticizer:0.5-10%; a blue light absorbent: 0.1-5%; an ultraviolet light absorbent: 0.1-5%; and other addictives; and the percentage is weight percentage. The transmission film or plate for preventing the blue light and the ultraviolet light can reduce harm of the blue light on human eyes, protects human skin and has a longer service life.

Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.

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.

Provided is a backlight module, comprising a back plate (1), a backlight source (2) disposed in the back plate (1), a light guide plate (3) disposed opposing to the backlight source (2) in the back plate (1), a reflective piece (4) disposed between the light guide plate (3) and the back plate (1), an optical membrane set (5) disposed on the light guide plate (3), an adhesive frame (6) disposed on the back plate (1), and a retaining wall (7) disposed opposing to the backlight source (2) between the light guide plate (3) and the adhesive frame (6); the retaining wall (7) is provided with an inclined surface (72) on the side adjacent to the backlight source (2); the inclined surface (72) is provided with a reflective layer (8) thereon. By arranging the retaining wall (7) having a reflective layer (8) at a position opposing to the backlight source (2) between the adhesive frame (6) and the light guide plate (3), the light emitted onto the retaining wall (7) is reflected into the light guide plate (3), therefore the present invention avoids forming a bright line due to the light reflected out from a gap between the optical membrane set (5) and the light guide plate (3), and well solves the problem of bright line on the incident side of a side-incident backlight module, thus having higher light coupling efficiency while improving the luminance of the light guide plate (3), avoiding luminance loss of the light emitted by an LED light source, and improving LED light source utilization rate.

The invention discloses an LED (light emitting diode) backlight liquid-crystal display device and a coating method for luminescent materials thereof. The LED backlight liquid-crystal display device comprises an LED light source module, a luminescent material substrate, a TFT (thin film transistor) substrate, a liquid crystal and a color film substrate. An LED chip is sealed in the LED light source module, a luminescent layer coated with RGB (red, green and blue) luminescent materials is arranged between the color film and the liquid crystal or between the liquid crystal and the LED light source module, the shapes of the RGB luminescent materials are the same as the shape of an RGB color film, and the colors of the RGB luminescent materials are corresponding to the color of the RGB color film. The invention further discloses a coating method for luminescent materials of the LED backlight liquid-crystal display device. In an LCD (liquid crystal display) device produced by the coating method, the luminescent materials and the chip are sealed and packaged separately, and operating temperatures of the luminescent materials are reduced, so that luminance loss of the luminescent materials caused by temperature quenching is avoided.

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.

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 film, a collimation backlight module, a display module and a display device, relates to the field of collimation film technology, and is invented to solve the problem that the collimation film in the prior art can cause brightness loss. The collimating film includes a collimating film body and a plurality of light-transmitting dots, a plurality of light-transmitting dots are dispersedly arranged on one side surface of the collimating film body, the light-transmitting dots have a first surface, and the first light-transmitting dots In the cross-section, the angle between the tangent of each point on the first surface and the bottom surface of the light-transmitting dots is an acute angle, and the first cross-section is a cross-section parallel to the height direction of the light-transmitting dots and intersecting the first surface. The invention can be used for collimation of backlight.

The invention discloses a backlight module and a display device, comprising a reflective sheet, a light guide plate, a light guide layer and a reverse prism light guide film which are sequentially stacked; at least one side of the light guide layer is provided with an anti-reflection layer. The backlight module and the display device proposed by the present invention can solve the problem of the light guide plate being scratched to a certain extent.

The invention relates to a diffusion sheet for a backlight module. The diffusion sheet comprises a base material layer and a diffusion layer, wherein the base material layer is made of a light-transmitting material; and the diffusion layer is laminated on the upper part of the base material layer and comprises an adhesive, nanoparticles and microparticles. Through the diffusion sheet with the structure, the rigidity of the diffusion layer can be improved so as to avoid the distortion and curling phenomena of the diffusion layer. In addition, the diffusion sheet has excellent diffusion effect according to the nanoparticle content of the diffusion layer, so that the defects of a light guide plate and an optical sheet can be effectively concealed or overcome and the luminance loss can be avoided.

Embodiments of the present application provide an image display method, device, electronic equipment, and readable storage medium, which relate to the field of image display technologies. The method includes: obtaining the maximum value of the primary color components and the average value of the primary color components in the current frame image according to the three primary color components of each pixel in the current frame image to be displayed; performing weighted summation on the obtained above-mentioned values ​​to obtain a target brightness reference value ;According to the preset corresponding relationship between the brightness reference value and the pulse width modulation duty ratio, and the target brightness reference value, the target pulse width modulation duty ratio is obtained; the backlight brightness of the backlight module is adjusted by using the target pulse width modulation duty ratio , and display the current frame image. Therefore, adjusting the backlight brightness according to the target brightness reference value corresponding to the actual brightness of the current frame image can effectively improve the poor backlight control effect and poor display effect caused by the large deviation between the calculated brightness and the actual brightness of the frame image. good question.