Irregular Display Panel Edge Brightness Transition

Solution Overview

Problem

Irregular-shaped display panels suffer from jagged edges due to high contrast between pixel edges and non-display regions, degrading display performance and user experience.

Innovation Solution

The display panel features an irregular-shaped display area with indented and misaligned pixels at the edges, a transition area with reduced maximum display brightness, and a gradual brightness transition to minimize contrast with the non-display region, suppressing the jagged edge effect.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If pixels at the irregular edge emit light with high brightness, then the display brightness is improved, but the contrast with the non-display region becomes too high causing obvious pixel jagging

Engineering Contradiction:

Improvedisplay brightnessVSAvoidpixel jagging

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by creating a transition area with distinct brightness characteristics. Pixels in the transition area have reduced maximum display brightness compared to pixels in the normal display area. This local differentiation in brightness quality smooths the contrast transition at the irregular edge, reducing pixel jagging while maintaining overall display brightness in the main display region.

Inventive Principle:

Principle #3Local quality

2Area of stationary object

If the display area is modified to an irregular shape, then the screen-to-body ratio is improved, but the edge pixels create high contrast with the non-display region

Engineering Contradiction:

Improvescreen-to-body ratioVSAvoidedge contrast

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent segments the display area into three distinct regions: the normal display area with full brightness, the transition area with reduced maximum brightness, and the non-display region. This segmentation allows the irregular-shaped display to maintain high screen-to-body ratio while introducing a buffer zone that reduces the harsh contrast at the edges through gradual brightness transition.

Inventive Principle:

Principle #1Segmentation

3Object-affected harmful factors

If the maximum display brightness of pixels in the transition area is reduced, then the jagged edge effect is suppressed, but the overall display brightness is reduced

Engineering Contradiction:

Improvejagged edge effectVSAvoidoverall display brightness

Core Design Contradiction:

Object-affected harmful factorsVSIllumination intensity

Solution Approach 1:

The patent applies local quality by creating a transition area with distinct brightness characteristics. Pixels in the transition area have reduced maximum display brightness compared to pixels in the normal display area. This local differentiation in brightness quality smooths the contrast transition at the irregular edge, reducing pixel jagging while maintaining overall display brightness in the main display region.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10388680B2Display panel and display apparatus

Publication Date: 2019.08.20 XIAMEN TIANMA MICRO ELECTRONICS

AI summary

A display panel and a display apparatus are provided. The display panel comprises a display region including an irregular-shaped display area, and a non-display region adjacent to the display region. The irregular-shaped display area includes a plurality of pixels arranged in an array. Adjacent pixel rows and/or adjacent pixel columns are indented by at least one pixel at a periphery of the irregular-shaped display area. The at least one indented pixel between the adjacent pixel rows and/or the adjacent pixel columns is a misaligned pixel. The irregular-shaped display area includes a transition area, and the transition area at least includes the misaligned pixel. A maximum display brightness of pixels in the transition area is smaller than a maximum display brightness of pixels outside the transition area.