3D Display Pixel Brightness Control for Crosstalk Reduction
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Solution Overview
Problem
3D display panels are highly susceptible to crosstalk effects between left and right viewing angle images due to viewing angle offset, leading to blurry images and reduced image quality.
Innovation Solution
The method involves interlacing first and second viewing angle pixels into blocks and using a brightness control unit to determine brightness values for each block based on predetermined values of adjacent pixels, preventing crosstalk by adjusting the brightness of specific blocks while maintaining image brightness through equations that balance pixel brightness and area ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If viewing angle pixels are arranged in interlaced pattern for 3D display, then stereoscopic image capability is improved, but crosstalk between left and right viewing angle images occurs due to viewing angle offset
Solution Approach 1:
The patent divides each viewing angle pixel into multiple sub-pixels (first sub-pixel and second sub-pixel) along the second direction. This segmentation allows independent brightness control of each sub-pixel, enabling precise adjustment to prevent crosstalk while maintaining stereoscopic display capability. The interlaced arrangement of first and second viewing angle pixels is preserved, but each is further divided into controllable segments.
Solution Approach 2:
The patent applies different brightness values to different sub-pixels based on their specific positions and adjacent pixels. The brightness control unit determines brightness values locally for each sub-pixel considering the predetermined brightness values of adjacent pixels, creating local quality adjustments that prevent crosstalk in specific viewing angle regions while maintaining overall image quality.
2Illumination intensity
If brightness of pixels is increased to improve image visibility, then image brightness is improved, but crosstalk effect is exacerbated
Solution Approach 1:
By segmenting pixels into sub-pixels with independent brightness control, the system can increase overall image brightness through selective enhancement of non-crosstalk-prone sub-pixels while suppressing brightness in sub-pixels that would cause or receive crosstalk, thus achieving high brightness without exacerbating crosstalk.
Solution Approach 2:
The patent dynamically adjusts the brightness parameter of individual sub-pixels based on predetermined brightness values and positional relationships. The brightness control unit modifies brightness parameters locally for each sub-pixel, allowing global brightness enhancement while maintaining local brightness suppression where needed to prevent crosstalk.
3Object-affected harmful factors
If viewing angle offset is reduced to prevent crosstalk, then crosstalk effect is reduced, but viewing angle flexibility is limited
Solution Approach 1:
The segmentation of pixels into independently controllable sub-pixels allows the system to maintain the interlaced arrangement for wide viewing angle coverage while applying localized brightness control to prevent crosstalk. This enables viewing angle flexibility to be preserved through structural arrangement while crosstalk is prevented through active brightness management.
Data Source
AI summary
A 3D display panel includes a plurality of first and second viewing angle pixels arranged along a first direction for displaying first and second viewing angle images respectively. The first viewing angle pixels and the second viewing angle pixels are interlacedly arranged along a second direction. A method for controlling pixel brightness of the 3D display panel includes determining a brightness value of a first block of a first viewing angle pixel according to a brightness value of the first viewing angle pixel and a brightness value of a second viewing angle pixel next to the first viewing angle pixel along the second direction, and determining a brightness value of a second block of the first viewing angle pixel according to the brightness value of the first block of the first viewing angle pixel and the brightness value of the first viewing angle pixel.