35results about How to "Avoid halo phenomenon" patented technology

A method and system for adjusting screen brightness uniformity of a spliced ​​display device, wherein the method includes the steps of: dividing the screen into a middle area and a border area, and detecting the average brightness value of each pixel in the middle area and the minimum brightness value of pixels in the border area ; Calculate the compensation parameters of the middle area according to the average brightness value and the minimum brightness value, and calculate the compensation parameters of the boundary area according to the minimum brightness value; perform brightness for each pixel in the middle area of ​​the screen according to the compensation parameters of the middle area Compensation: Compensate the brightness of the border area of ​​the screen according to the compensation parameters of the border area; perform border fading processing on the compensated screen. The brightness uniformity is improved by the solution of the invention.

The invention relates to a light emitting module and a light emitting keyboard. The light emitting module comprises a circuit board, a light emitting unit, a transparent glue layer, a light guide plate, and a reflective layer. The light emitting unit is arranged on the circuit board, and has a light-out surface used to emit light. The transparent glue layer has a first gluing part and a second gluing part, the first gluing part has a first side and a second side which face each other, the second gluing part has a third side and a fourth side which face each other, the first side of the first gluing part is arranged on the circuit board, and the third side of the second gluing part is adhered to the light-out surface of the light emitting unit. The light guide plate has a light-in surface used to receive light transmitted via the second gluing part. The light-in surface faces the light-out surface of the light emitting unit, and the light-in surface of the light guide plate is adhered to the fourth side of the second gluing part. The reflective layer is arranged under the light guide plate, and the bottom side of the reflective layer is adhered to the second side of the first gluing part. The light-in surface of the light guide plate and the light-out surface of the light emitting unit are connected by the second gluing part, and therefore, the phenomenon of halo can be avoided.

The invention discloses a structure and design method for reducing the mixed light area of ​​Mini LED, which is used to solve the problem of light leakage and slight halo caused by the mixed light phenomenon in the Mini LED structure. Encapsulation: There is an arc-shaped convex cup on the convex-shaped sealant. The invention ensures that the surface of the colloid is in the state of an arc-shaped convex cup by controlling the package shape of the chip colloid, and uses the principle of concentrating light by a convex mirror to effectively reduce the projection on the module after the chip emits light. The generated area; through the optimization of the Mini LED dispensing technology and its structure, the convergence of light transmission is realized, and then the mutual independence of each single-particle light-emitting area is realized, the phenomenon of mixed light is reduced, and the delicate expression of the product screen display is finally realized, avoiding light Halo phenomenon, to achieve higher contrast.

The invention provides an image defogging method. The method comprises the following steps: step one, collecting a fog-contained image; step two, obtaining an initial atmospheric scattering function according to a boundary condition of the image; step three, refining the initial atmospheric scattering function by using a recursive two-sided filterer; step four, obtaining a local contrast by using the recursive two-sided filterer again; step five, on the basis of the local contrast, carrying out processing adaptively on fogged areas with different fog concentrations; and step six, obtaining a defogging result rapidly based on an image degradation model, carrying out hue adjustment, and then outputting and displaying a final result. With the method, edge information of the defogging result can be kept well and the detail is clear. Moreover, no residual fog and vignetting effect occurs at an area with a sudden change of the depth of field; the real scene is recovered to the greatest extent; and the visual feelings of people can be realized wholly.