Display Panel Pixel Blocks for Independent Viewing-Angle Control
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Solution Overview
Problem
Existing display apparatuses struggle to selectively control the viewing angle for drivers and passengers in vehicles, particularly those mounted at the center of the dashboard, necessitating a solution to provide information or content based on the driving situation.
Innovation Solution
A display panel with subpixels that include first and second light-emitting elements, each controlled by different mode control transistors, and lens areas that adjust the viewing angle, allowing independent control of the viewing angle in different areas of the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single viewing angle control mode is used for the entire display, then the structure is simple, but the ability to provide different information to driver and passenger is lost
Solution Approach 1:
The display is divided into multiple independent pixel blocks, each capable of independent viewing angle control. Each pixel block contains subpixels with separate light-emitting elements and lens structures, allowing different viewing angle modes (wide/narrow) to be applied to different regions simultaneously. This segmentation enables the display to provide different information to driver and passenger independently while maintaining overall system functionality.
Solution Approach 2:
The viewing angle characteristics of each pixel block can be dynamically switched between wide viewing angle and narrow viewing angle modes through control signals. The lens structures (including microlens arrays) can be configured to change their optical properties, allowing the display to adapt its viewing angle characteristics in real-time based on driving situations and user needs.
2Adaptability or versatility
If the display provides information to both driver and passenger simultaneously, then information coverage is improved, but the driver's view may be disturbed by passenger content
Solution Approach 1:
Different regions of the display (pixel blocks) can have different viewing angle characteristics tailored to their specific function. Pixel blocks displaying driver-critical information can be configured with narrow viewing angles that direct light primarily toward the driver, while pixel blocks displaying passenger entertainment content can use wide viewing angles. This local quality differentiation ensures that passenger content does not distract the driver while both can receive their respective information simultaneously.
Solution Approach 2:
Lens structures (microlens arrays, lens films) act as intermediaries between the light-emitting elements and the viewers. These lens intermediaries control and direct the light emission patterns, shaping the viewing angles and directing light toward specific target audiences (driver or passenger). The lens structures mediate the light distribution to achieve the desired viewing angle control and prevent driver distraction from passenger content.
3Adaptability or versatility
If multiple light-emitting elements per subpixel are used to enable viewing angle control, then viewing angle adjustability is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple light-emitting elements within each subpixel are merged under a single pixel block structure with shared control circuitry. The pixel block level structure integrates multiple subpixels, each with multiple light-emitting elements, into a unified controllable unit. This merging approach allows complex viewing angle control functionality to be achieved while maintaining manageable manufacturing processes through hierarchical integration.
Solution Approach 2:
The multiple light-emitting elements in each subpixel serve multiple functions: they can be independently controlled to provide different viewing angle modes, enable local dimming, and support various display content types. This multi-functionality is achieved through a universal pixel block structure that can handle different operational modes, reducing the need for separate specialized structures for each function and simplifying overall manufacturing.
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 flexible adjustment of viewing angles in different display areas, ensuring that the driver's view is not disturbed by passenger content while allowing passengers to view content comfortably, thus enhancing safety and usability.
Implementation Method 1
a first lens area disposed on the first light-emitting element, and a second lens area disposed on the second light-emitting element
Data Source
AI summary
A display panel and a display apparatus are provided, in which a ratio of a plurality of areas capable of independently controlling a viewing angle in a display area may be adjusted. The display panel includes pixel blocks including subpixels and multiplexer circuits disposed in a bezel area and individually connected to the pixel blocks. The multiplexer circuits supplies first and second mode control signals to any one of the pixel blocks. The subpixels include a first light-emitting element connected to a driving transistor through a first mode control transistor controlled by the first mode control signal, a second light-emitting element connected to the driving transistor through a second mode control transistor controlled by the second mode control signal, a first lens area disposed on the first light-emitting element, and a second lens area disposed on the second light-emitting element.