Display Panel Optical Areas with Connected Power Lines
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Solution Overview
Problem
Existing display devices face challenges in ensuring transmittance, reducing bezel area, and maintaining luminance uniformity, particularly when incorporating optical components in the active area.
Innovation Solution
The display device includes a display panel with optical areas divided into pixel and transmissive areas, where constant power lines are connected to ensure uniform power distribution and suppress degradation of transmittance, while maintaining luminance uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sensor modules are disposed in the optical area to reduce bezel area, then the display device can achieve a larger screen area, but the transmittance of the optical area deteriorates
Solution Approach 1:
The optical area is segmented into a pixel area where pixels are disposed and a transmissive area through which light passes. This segmentation allows the sensor module to be positioned in the optical area while maintaining distinct functional zones: one for display and another for optical transmission, thereby resolving the contradiction between maximizing screen area and maintaining transmittance.
Solution Approach 2:
The sensor module is positioned on the rear surface of the display panel, utilizing the depth dimension of the device. By moving the sensor module from the front bezel area to the rear optical area, the design achieves a larger front screen area while the sensor module remains functional through the transmissive area on the rear side, thus resolving the transmittance contradiction.
2Device complexity
If constant power lines are not connected in the optical area, then the device complexity is reduced, but the luminance uniformity deteriorates
Solution Approach 1:
Adjacent constant power lines are merged by connecting them to each other, forming a unified power distribution network across the optical area. This merging ensures that all pixels receive uniform constant power, thereby achieving luminance uniformity without significantly increasing device complexity, as the connection uses existing wiring structures.
3Area of stationary object
If the bezel area is reduced to maximize screen area, then the display device achieves a more compact design, but the transmittance of the optical area deteriorates
Solution Approach 1:
Different regions of the optical area are assigned different qualities: the pixel area contains pixels for display while the transmissive area maintains high light transmittance. This local differentiation allows the sensor module to be integrated in the optical area without compromising overall transmittance, as the transmissive area specifically optimized for light passage remains intact.
Data Source
AI summary
In one or more examples, a display device includes a display panel including an active area in which one or more optical areas are disposed; and one or more sensor modules overlapped with the one or more optical areas. The one or more optical areas may be divided into a pixel area in which a plurality of pixels is disposed and a transmissive area through which light of the one or more sensor modules is to pass. Among a plurality of constant power lines configured to apply at least one constant power to the plurality of pixels disposed in the pixel area, adjacent constant power lines may be connected to each other.