Display Panel Pixel Layout for Under-Panel Camera Light Transmission
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Solution Overview
Problem
The current Camera Under Panel (CUP) technology in OLED displays faces challenges in achieving high light transmittance due to the small gap area between sub-pixels, making it difficult to design effective structures for improved imaging quality.
Innovation Solution
The design incorporates a display panel with a first display area and a second display area, where the first display area has a smaller pixel repeating unit size and light-transmitting holes, allowing for increased gap distance between adjacent units, facilitating the design of layer structures and enhancing light transmittance by reducing light loss through the gap area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the gap area between sub-pixels in the CUP area is small, then the screen integration and screen ratio are improved, but the light transmittance is reduced making it difficult to design layer structures
Solution Approach 1:
The patent extends the gap area from a two-dimensional planar space to a three-dimensional vertical space by introducing a light guide cavity that penetrates through multiple layers (color filter layer, encapsulation layer, etc.). This dimensional transformation allows the light transmission path to utilize the vertical dimension, effectively increasing the functional gap area without changing the horizontal pixel pitch, thus resolving the contradiction between small gap area and layer structure designability.
2Illumination intensity
If the gap area between sub-pixels is increased to improve light transmittance, then the imaging quality is improved, but the screen ratio and integration are reduced
Solution Approach 1:
The patent utilizes the vertical dimension by creating a light guide cavity that extends through the encapsulation layer and color filter layer. This allows light to transmit through the vertical space rather than requiring increased horizontal gap area, thereby improving light transmittance and imaging quality without sacrificing screen ratio or pixel density.
3Illumination intensity
If the structure of layers in the gap area is designed to improve light transmittance, then the imaging quality is improved, but the device complexity increases
Solution Approach 1:
The light guide cavity structure serves multiple functions simultaneously: it acts as a light transmission channel, provides structural support, and defines the optical path. By integrating these functions into a single structural element rather than adding separate components, the patent improves light transmittance while minimizing the increase in device complexity.
4Illumination intensity
If the pixel repeating unit area is reduced to increase gap distance, then the light transmittance is improved, but the display area is reduced
Solution Approach 1:
The patent compensates for the reduced pixel repeating unit area by utilizing the vertical dimension through the light guide cavity. This allows the horizontal pixel pitch to be maintained while the light transmission path is extended vertically, thereby improving light transmittance without further reducing the display area.
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
This configuration improves light transmittance in the first display area, enhancing the imaging quality of cameras by increasing the gap area between sub-pixels, thus overcoming the limitations of existing CUP technology.
Implementation Method 1
The organic light-emitting diode (called OLED for short) mainly has the advantages of self-emitting
Implementation Method 2
ambient light can transmit into the camera through a gap area between the sub-pixels in the CUP area
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a first display area and a second display area, the first display area is provided with a plurality of first pixel repeating units disposed in array, and the second display area is provided with a plurality of second pixel repeating units disposed in array, wherein a quantity of the first light-emitting units included in the first pixel repeating unit is equal to a quantity of the second light-emitting units included in the second pixel repeating unit, and an area of the first pixel repeating unit is smaller than an area of the second pixel repeating unit.