72results about How to "Reduce color shift" patented technology

The invention discloses a compensation device and method for a display screen image in a backlight local dimming system. The display screen image is divided into a corresponding quantity of image blocks according to a plurality of backlights. A block brightness variation value deciding device receives the display screen image and calculates the average value, the maximum value and the initial value of the image blocks. A quality/power saving priority deciding device respectively generates backlight dimming signals to the image blocks according to the average value, the initial value, the first threshold value and the second threshold value of the image blocks. An on-time filter generates the backlight pulse width modulation signals of the image blocks according to the backlight dimming signal adaptabilities of the image blocks. A backlight-diffused approximating device generates a backlight-diffused image according to the backlight pulse width modulation signals of the image blocks. An image compensation device compensates the display screen image according to the backlight-diffused image to generate a compensated screen image. By adopting the device and the method disclosed by the invention, the calculation amount and the hardware circuit area can be reduced and the image quality can be improved.

The invention provides a yellow light absorption structure and a backlight module having the same. The yellow light absorbing structure comprises a yellow light absorbing material, a blue light preventing film layer and a substrate, the blue light preventing film layer is arranged on either side of the base, and the yellow light absorbing material is arranged in the blue light preventing film layer or arranged in the substrate. Since the yellow light absorbing structure is provided with the blue light preventing film and the yellow light absorbing material, so when integrated in a monitor module, the yellow light absorbing structure can be used to filter the blue light wave band that causes damage to human eyes, can further reduce damage to human eyes caused by a display screen, can absorb a part of the yellow light wave band to reduce color shift of the display screen, and keeps the white balance of color of the display screen.

The invention relates to a color segmentation three-dimensional projection device based on band-pass color wheel light-filtering, comprising a left projector and a right projector respectively corresponding to a left eye and a right eye. Both of the left projector and the right projector comprise light sources, band-pass color wheels which can carry out RGB (Red, Green, Blue) three-channel light-filtering, digital micromirror devices DMD and projection lenses. The light sources, the band-pass color wheels and the digital micromirror devices DMD are sequentially arranged, and the projection lenses are positioned on a reflection path of the digital micromirror devices DMD. Compared with the prior art, the invention has the advantages of low cost and good projection effect and is simple to manufacture.

The invention discloses an LED and a display device, and relates to the display techniques. Due to the fact that quantum dot materials which can emit light under illumination of an LED chip are doped in an LED lamp cover which is far away from the LED chip, the influence of the temperature of the LED chip on the quantum dot materials is small, the color deviation of light emitting of the LED is reduced, and the quality of displaying is improved.

The invention discloses an LED Bin dividing method and an application product thereof. The LED Bin dividing method and an application product thereof are characterized in that LED Bin dividing parameters included in the method at least comprise brightness or luminous fluxes, voltage and chromaticity coordinates of wafers in LEDs, according to actual distribution conditions of the LED parameters under preset conditions, the parameters are divided into different section ranges, and the parameters in the sections are arranged and combined together to form a final Bin dividing standard. The Bin dividing condition or range of the Bin dividing parameters is reasonably and scientifically defined, scientific definition of optics, electricity and chromaticity is included, products with similar parameters are concentrated in a same Bin, LED products with Bin divided through the method are assembled together, color consistency of end application products can be greatly improved, and color difference or color deviation problems of a same batch of products can be solved.

In a method of manufacturing an optical sheet, a stacked structure may be formed by alternatively and repeatedly stacking at least one transparent layer and at least one light scattering layer. A first cut face may be formed by partially cutting the stacked structure. A second cut face may be formed by partially cutting the stacked structure. The second cut face may be parallel to the first cut face.

The invention discloses a full-automatic makeup removing and beautifying integrated device, which includes a shell. The shell is provided with a groove allowing the head to extend into the inner wallof the shell, a 3D scanner for scanning the face of a human body is arranged on the upper part of the groove, the groove is provided with four faces, a liquid collector is arranged on the bottom faceof the groove, a cross beam is arranged above the liquid collector, the cross beam is provided with a movement adjusting unit, and the movement adjusting unit is provided with a flexible cushion block; a 3D printer working arm is arranged at the top of the shell, the 3D printer working arm is provided with a 3D printer spraying head, a contact connecting part is arranged on the lower part of the 3D printer spraying head in a connected mode, a plurality of contacts are arranged on the lower part of the contact connecting part in a connected mode, and the contacts are located on the upper part of the groove and staggered to be not located on the same vertical surface with the 3D scanner during the action; and a plurality of liquid storage tanks are arranged on the upper part of the shell, and the liquid storage tanks are connected with the 3D printer spraying head through connecting pipes.

The present invention provides an electrochromic display device which can realize a reduction in color drift in storing images and has excellent memory properties. The electrochromic display device is an active matrix drive-type electrochromic display device containing opposed electrodes, at least one type of a porous layer containing titanium oxide with an electrochromic dye adsorbed thereon, and at least one type of a porous layer containing tin oxide. The active matrix drive-type electrochromic display device is characterized in that the tin oxide-containing porous layer is connected to a pixel circuit used in active matrix drive through one of the opposed electrodes.