Display Panel Sub-Pixel Omission for Sensor Light Transmittance

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Solution Overview

Problem

In electronic devices, the visibility of boundaries between areas with different resolutions in display panels, such as high-resolution and low-resolution areas, leads to a deterioration in display quality due to differences in luminance, making it challenging to maintain consistent image quality.

Innovation Solution

A display device and panel configuration that includes a high-resolution area, a boundary area with reduced resolution, and a low-resolution area overlapping a sensor, where the pixel arrangement in the boundary area omits at least one sub-pixel from the high-resolution area's pixel group, and a light transmittance portion is used in the low-resolution area to secure sufficient light transmittance for the sensor, thereby reducing the visibility of the resolution boundaries.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a camera sensor is disposed below a through hole penetrating the bezel, then the sensor can be positioned outside the display area, but the bezel size increases reducing the display area

Engineering Contradiction:
Improvedisplay areaVSAvoidbezel structure
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The camera sensor is nested within the display area by positioning it behind the display panel rather than outside the bezel. This allows the sensor to be integrated into the display structure, maximizing the display area while accommodating the sensor without increasing bezel size.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The sensor placement moves from a two-dimensional bezel boundary to a three-dimensional position behind the display panel. This dimensional transition allows the sensor to occupy space that does not interfere with the front display area, effectively increasing the usable display area.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Illumination intensity

If the display area uses low resolution pixels to secure light transmittance for the sensor, then light transmittance is sufficient, but the boundary between high-resolution and low-resolution areas becomes visible deteriorating display quality

Engineering Contradiction:
Improvelight transmittanceVSAvoiddisplay quality
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

The display panel employs different pixel arrangements in different regions: a first pixel group with complete sub-pixels in the high-resolution area, and a second pixel group with omitted sub-pixels in the low-resolution area overlapping the sensor. This local differentiation optimizes light transmittance where needed while maintaining display quality in other areas.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The pixel configuration parameters are changed between regions: the first pixel group includes all sub-pixels (R, G, B) for high resolution, while the second pixel group omits at least one sub-pixel type to increase light transmittance. This parameter variation allows the display to adapt to different functional requirements in different areas.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20230135563A1Display device for improving displaying quality and display panel thereof
Publication Date: 2023.05.04 LG DISPLAY CO LTD
  • US20230135563A1 patent drawing
  • US20230135563A1 patent drawing
  • US20230135563A1 patent drawing

AI summary

A display apparatus may include a display panel including a first area corresponding to a first resolution, a second area corresponding to a second resolution lower than the first resolution, and a third area corresponding to a third resolution lower than the second resolution, and a sensor disposed under the panel to overlap at least a portion of the third area. Pixels are disposed in the first area based on a first arrangement corresponding to a first pixel group including sub-pixels. Pixels are disposed in the second area based on a second arrangement corresponding to a second pixel group in which at least one of the sub-pixels of the first pixel group is omitted. Pixels are disposed in at least a part of the third area based on the first arrangement. A light transmittance portion is disposed in another part of the third area.