Movable Display Sub-Panel for Full-Screen Camera Integration

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Solution Overview

Problem

In display technology, achieving full-screen display is hindered by the need for a camera or image acquisition unit that occupies part of the display area, preventing the entire panel from being used for image playback.

Innovation Solution

A display panel design featuring a first sub-panel with a transparent area and a surrounding display area, a second sub-panel that can move between positions corresponding to the transparent and display areas, and an image acquisition unit positioned to project within the transparent area, allowing for full-screen display by switching between image acquisition and display modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an image acquisition unit (camera) is integrated into the display panel, then image acquisition functionality is achieved, but the display area is reduced because the camera occupies part of the panel

Engineering Contradiction:
Improveimage acquisition functionalityVSAvoiddisplay area
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent moves the image acquisition unit from the traditional in-plane integration (2D layout within the display area) to an out-of-plane positioning (3D spatial arrangement). The camera is placed on the back side of the display panel, utilizing the third dimension (depth) to resolve the conflict between integrating image acquisition functionality and maintaining full display area. This dimensional transition allows the camera to capture light from the front without occupying display real estate.

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

Solution Approach 2:

The display panel is divided into functionally distinct regions: a first substrate layer containing the display structure and a second substrate layer containing the image acquisition unit. This segmentation separates the display function from the image acquisition function into different spatial zones, allowing each to operate independently without interfering with the other's performance or area requirements.

Inventive Principle:
Principle #1Segmentation

2Area of stationary object

If the image acquisition unit is placed on the back side of the display panel, then the display area is maximized, but light transmission and image quality may be affected

Engineering Contradiction:
Improvedisplay areaVSAvoidlight transmission quality
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The patent applies local quality by creating a dedicated light transmission region on the display panel's front surface that corresponds to the back-side camera position. This localized optical pathway is optimized for light transmission with minimal interference from display structures, while other regions maintain their display functions. The gate lines and data lines are selectively arranged to pass through or around this critical transmission zone with micron-level precision.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent replaces traditional mechanical/optical coupling methods with a direct back-side mounting approach. Instead of using complex lens assemblies, mirrors, or prisms to route light from the front to a front-mounted sensor, the camera is positioned directly on the back side, allowing light to transmit through the panel thickness. This substitution simplifies the optical path and reduces the number of optical interfaces that could degrade image quality.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Area of stationary object

If gate lines and data lines are extended through the transparent area to connect pixels, then display coverage is improved, but the transparent area's light transmission is blocked

Engineering Contradiction:
Improvedisplay coverageVSAvoidlight transmission
Core Design Contradiction:
Area of stationary objectVSIllumination intensity

Solution Approach 1:

The patent applies local quality by creating distinct zones within the transparent area: regions where gate lines and data lines are present (with micron-level widths optimized for minimal obstruction) and regions where they are absent (providing high light transmission). The line widths are locally optimized to balance electrical connectivity requirements with optical transmission needs, using widths on the order of micrometers to minimize shadowing effects.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent applies partial action by selectively extending gate lines and data lines only where necessary for pixel connectivity, rather than uniformly across the entire transparent area. The lines are routed to cover the minimum required area for functional display operation, leaving the majority of the transparent area free for optimal light transmission. This partial coverage approach satisfies display requirements while maximizing optical performance.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS11947858B2Display panel and display device
Publication Date: 2024.04.02 BOE TECHNOLOGY GROUP CO LTD
  • US11947858B2 patent drawing
  • US11947858B2 patent drawing
  • US11947858B2 patent drawing

AI summary

A display panel and a display device are disclosed. The display panel includes a first sub-panel (1), a second sub-panel (2), a drive unit (4) and an image acquisition unit (3). The first sub-panel (1) has a transparent area (S1) and a display area (S2) surrounding the transparent area (S1). The second sub-panel (2) is on a side of the first sub-panel (1) away from a display surface. The drive unit (4) is connected to the second sub-panel (2) and can drive the second sub-panel (2) to move back and forth between positions corresponding to the transparent area (S1) and the display area (S2) of the first sub-panel (1). The image acquisition unit (3) is on a side of the second sub-panel (2) away from the first sub-panel (1), and an orthographic projection thereof on the first sub-panel (1) is within the transparent area (S1).