Grayscale Combined Pixel Layout for Wider LCD Viewing Angles

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Solution Overview

Problem

Current display panel arrangements fail to adequately improve viewing angles for high-resolution liquid crystal televisions, which is a critical issue for enhancing display quality.

Innovation Solution

A display panel design featuring pixel units arranged in an array with sub-pixels of different colors, where each pixel unit includes three sub-pixels corresponding to a high grayscale and nine sub-pixels corresponding to low grayscales, forming a grayscale combined pixel that increases the difference between high and low grayscales, thereby improving viewing angles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If traditional pixel arrangements are used, then manufacturing is simpler, but viewing angles are insufficient

Engineering Contradiction:
Improveviewing angleVSAvoidpixel arrangement complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The pixel unit is segmented into multiple sub-pixels with different grayscale levels. Specifically, each pixel unit contains one sub-pixel for high grayscale and three sub-pixels for low grayscale, dividing the traditional single grayscale pixel into distinct segments that can be independently controlled to achieve wider viewing angles.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the pixel unit are assigned different grayscale qualities. The sub-pixels are configured with specific grayscale levels (one high grayscale, three low grayscales) to create local variations in light output characteristics, which collectively improve the overall viewing angle performance of the display panel.

Inventive Principle:
Principle #3Local quality

2Illumination intensity

If more sub-pixels per pixel unit are used, then viewing angles improve, but device complexity increases

Engineering Contradiction:
Improveviewing angleVSAvoidsub-pixel configuration
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The pixel unit employs an asymmetric configuration of sub-pixels with different grayscale levels rather than uniform sub-pixels. Specifically, one sub-pixel is assigned high grayscale while three sub-pixels are assigned low grayscale, creating an asymmetric structure that optimizes viewing angle without requiring all sub-pixels to be identical.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The invention changes the grayscale parameter of different sub-pixels within the same pixel unit. By assigning different grayscale levels (high vs. low) to different sub-pixels, the system achieves improved viewing angle performance through parameter differentiation rather than through increasing the total number of pixels uniformly.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12204217B2Display panel including grayscale combined pixel
Publication Date: 2025.01.21 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
  • US12204217B2 patent drawing
  • US12204217B2 patent drawing
  • US12204217B2 patent drawing

AI summary

A display panel includes a plurality of pixel units arranged in an array and a plurality of data lines. The pixel units in two adjacent rows in two adjacent columns form a grayscale combined pixel. The grayscale combined pixel comprises three sub-pixels corresponding to the high grayscale and nine sub-pixels corresponding to the low grayscale.