Under-Screen Camera Display Layout With Reduced Screen Gap

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Solution Overview

Problem

Conventional display devices with a front-facing camera in the non-display region create a large black frame, preventing full-screen display and causing display unevenness due to height differences between primary and secondary display screens.

Innovation Solution

A display device design that reduces the gap between primary and secondary display screens by optimizing the placement and angle of transflective mirrors and image acquisition units, allowing for a full-screen display with an under-screen camera.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a secondary display screen is disposed in the non-display region with a transflective mirror, then the full-screen display is implemented, but the height difference between the two display screens causes display unevenness

Engineering Contradiction:
Improvedisplay areaVSAvoiddisplay uniformity
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The patent introduces a gap dimension between the primary and secondary display screens to accommodate the optical path for the image acquisition unit. This dimensional adjustment allows the camera to be positioned under the display while maintaining proper light reflection angles through the transflective mirror, thereby achieving full-screen display without compromising display uniformity.

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

Solution Approach 2:

The patent optimizes specific parameters including the gap length L1 between displays and the light receiving surface dimension L2 of the image acquisition unit. By carefully controlling these dimensional parameters, the system achieves both full-screen display coverage and uniform display quality across both screens.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If the camera is disposed on the reflection direction of the transflective mirror, then the under-screen camera is implemented, but the gap between displays increases causing visual perception of distance difference

Engineering Contradiction:
Improvecamera integrationVSAvoidgap distance
Core Design Contradiction:
Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The patent implements a partial gap solution where the gap length L1 is optimized to be sufficient for camera integration but minimized to reduce visual perception of distance. The gap is neither completely eliminated nor excessively large, but precisely controlled to achieve the optimal balance between camera functionality and display continuity.

Inventive Principle:
Principle #16Partial or excessive action

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

The solution mitigates display unevenness and enables a full-screen display by minimizing the perceived distance difference between the screens, enhancing visual perception and display effectiveness.

Implementation Method 1

a transflective mirror is disposed in a gap between the secondary display screen and a primary display screen in a first direction. The first direction is a light emission direction of the secondary display screen.

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

External light is collected through an opening in the non-display region.

Methodology Applied
Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentUS12601899B2Display device
Publication Date: 2026.04.14 WUHAN TIANMA MICRO ELECTRONICS CO LTD
  • US12601899B2 patent drawing
  • US12601899B2 patent drawing
  • US12601899B2 patent drawing

AI summary

Provided is a display device. The display device includes a primary display screen, a secondary display screen, an image acquisition unit, a primary display region, and a secondary display region. The primary display region is connected to the secondary display region. The primary display screen is disposed in the primary display region. The secondary display screen is disposed in the secondary display region. In a first display state, a gap exists between the primary display screen and the secondary display screen in a first direction. The length of a section line segment of a light receiving surface of the image acquisition unit on a first plane is L2. The length L1 of the gap between the primary display screen and the secondary display screen in the first direction satisfies that L1<L2.