Array Substrate Photosensor Integration in Transparent Regions

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Solution Overview

Problem

In display apparatuses, the integration of accessories like camera lenses and photosensors results in a waste of image display area due to the need for notches, and it is challenging to dispose these accessories in full-screen display panels without compromising aesthetics or functionality.

Innovation Solution

An array substrate design featuring a display area with a first array of subpixels and a partially transparent area with a second array of subpixels, where the partially transparent area includes light emitting regions separated by non-light emitting regions, incorporating photosensors and thin film transistors, allowing for the integration of accessories without the need for notches while maintaining full-screen display capability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If accessories like camera lenses and photosensors are integrated into display apparatuses, then functionality is improved, but image display area is reduced due to notches

Engineering Contradiction:
ImprovefunctionalityVSAvoidimage display area
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent places photosensors in the non-light emitting regions of the partially transparent area, utilizing the vertical arrangement where light emitting regions are separated by non-light emitting regions. This spatial arrangement in the vertical dimension allows both display elements and photosensors to coexist without overlapping, thereby maintaining full-screen display area while integrating photo-sensing functionality.

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

2Area of stationary object

If accessories are integrated without notches, then image display area is maintained, but it is challenging to dispose accessories while maintaining aesthetics and functionality

Engineering Contradiction:
Improveimage display areaVSAvoidintegration complexity
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent creates a partially transparent area with distinct light emitting regions and non-light emitting regions. The non-light emitting regions serve as localized zones for integrating photosensors, while light emitting regions maintain display functionality. This local differentiation allows accessories to be disposed of in specific areas without affecting the overall aesthetics or requiring notches, thus maintaining full-screen appearance while enabling functionality integration.

Inventive Principle:
Principle #3Local quality

3Measurement precision

If photosensors are placed in non-light emitting regions, then light detection capability is improved, but transparency of partially transparent area is reduced

Engineering Contradiction:
Improvelight detection capabilityVSAvoidtransparency
Core Design Contradiction:
Measurement precisionVSIllumination intensity

Solution Approach 1:

The partially transparent area is segmented into light emitting regions and non-light emitting regions separated by substantially transparent non-light emitting regions. Photosensors are placed in the non-light emitting regions where they can detect light without interfering with the light emission in other regions. The separating regions maintain transparency to allow light passage while providing dedicated zones for photosensor placement, thus balancing light detection capability with overall transparency.

Inventive Principle:
Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables a full-screen display without the need for punch-through windows, allowing for the integration of accessories like camera lenses and photosensors while ensuring satisfactory image display and light detection capabilities.

Implementation Method 1

a respective one of the plurality of photosensors comprises a first polarity semiconductor layer, a second polarity semiconductor layer, and an intrinsic semiconductor layer connecting the first polarity semiconductor layer and the second polarity semiconductor layer

Methodology Applied
Scientific EffectPhotoelectric effect: Photoelectric Effect

Data Source

PatentUS11469261B2Array substrate, display apparatus, and method of fabricating array substrate
Publication Date: 2022.10.11 BEIJING BOE TECH DEV CO LTD
  • US11469261B2 patent drawing
  • US11469261B2 patent drawing
  • US11469261B2 patent drawing

AI summary

An array substrate is provided. The array substrate includes a display area having a first array of subpixels; and a partially transparent area having a second array of subpixels. The partially transparent area includes a plurality of light emitting regions spaced apart from each other by a substantially transparent non-light emitting region. The second array of subpixels is limited in the plurality of light emitting regions. The array substrate further includes a plurality of photosensors and a plurality of first thin film transistors in the substantially transparent non-light emitting region. A respective one of the plurality of photosensors includes a first polarity semiconductor layer, a second polarity semiconductor layer, and an intrinsic semiconductor layer connecting the first polarity semiconductor layer and the second polarity semiconductor layer.