Display Panel Pattern Layers for Brightness Uniformity
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Solution Overview
Problem
Display devices with varying pixel densities face challenges in maintaining consistent brightness and image quality due to differences in transmittance between areas, leading to reduced visibility and reliability.
Innovation Solution
A display device design featuring a display panel with distinct areas of different pixel densities, including a first display area with higher transmittance and a second display area with greater pixel density, along with pattern layers and controllers to manage light transmission and brightness, ensuring improved image quality and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel uses areas with different pixel densities to accommodate electronic modules, then the electronic module can be integrated under the display panel, but the transmittance becomes inconsistent across different areas leading to brightness differences and reduced visibility
Solution Approach 1:
The patent applies local quality by creating different pixel densities in different areas of the display panel. The first display area has a first pixel density while the second display area has a second pixel density, allowing the electronic module to be integrated in the pixel-free area while maintaining display functionality in both areas. This resolves the contradiction by adapting the display structure to accommodate the electronic module while preserving visibility in both regions.
Solution Approach 2:
The patent changes the pixel density parameter across different areas of the display panel. By having a first pixel density in the first display area and a second pixel density in the second display area, the system accommodates the electronic module integration while maintaining appropriate display characteristics in each area, thus resolving the visibility consistency issue.
2Illumination intensity
If the first display area has higher transmittance to improve visibility, then visibility is enhanced, but the brightness difference between the first display area and second display area increases
Solution Approach 1:
The patent applies local quality by assigning different transmittance characteristics to different areas. The first display area has higher transmittance to enhance visibility, while the second display area has different transmittance properties. This localized differentiation allows each area to be optimized for its specific function while maintaining overall system performance.
Solution Approach 2:
The patent introduces a controller that dynamically adjusts the brightness of pixels in both display areas. By receiving operation state information and controlling pixel brightness accordingly, the system can compensate for transmittance differences and maintain brightness uniformity across areas with different optical properties.
3Stability of the object's composition
If pattern layers are added to control light transmission and compensate for brightness differences, then brightness uniformity is improved, but the device complexity increases
Solution Approach 1:
The patent introduces pattern layers as intermediary elements between the pixel structures and the external environment. These pattern layers include light blocking patterns and light guiding patterns that mediate light transmission to compensate for transmittance differences between areas with different pixel densities, thereby achieving brightness uniformity without requiring fundamental changes to the pixel structure.
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 enhances visibility by compensating for brightness differences and preventing image distortion, resulting in a more reliable and effective display device.
Implementation Method 1
Each of the plurality of first pattern layers blocks an incoming light from an outside of the display panel
Implementation Method 2
Each of the plurality of second pattern layers controls a traveling direction of an outgoing light emitted from the light emitting layer
Implementation Method 3
The first display area has a transmittance greater than a transmittance of the second display area
Data Source
AI summary
A display device includes a display panel, and an electronic module disposed thereunder. The display panel includes a first display area having first areas with a first pixel density and a pixel-free area, each first area including a respective pixel, the pixel-free area including second areas and third areas, each third area surrounding a respective second area and disposed between the respective second area and at least one first area, a second display area having a second pixel density greater than the first pixel density, first pattern layers disposed in the third areas, respectively, each first pattern layer surrounding a respective second area in a plan view, and second pattern layers disposed on the first pattern layers, respectively.