Integrating Photosensitive Array on LCD Substrate
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Solution Overview
Problem
Conventional LCD panels require separate components for display and camera functions, leading to a fragmented front panel design that affects both display quality and camera integration.
Innovation Solution
An LCD panel with a photosensitive device array integrated on the array substrate, coupled with a control circuit and photo-sensing control unit, allowing for simultaneous display and camera functionality without compromising light transmission or display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate components are used for display and camera functions, then each component can be optimized independently, but the front panel design becomes fragmented and complex
Solution Approach 1:
The patent merges the camera function with the display panel by integrating photosensitive devices directly into the array substrate. The photosensitive device array is formed on the array substrate in the same layer as the pixel electrodes, allowing the display panel to simultaneously perform display and image capture functions, thereby eliminating the need for separate camera components and simplifying the front panel design
Solution Approach 2:
The display panel is designed to serve multiple functions: it acts as both a display device and a camera sensor. The array substrate contains both pixel electrodes for display and photosensitive devices for image capture, making the single component universal and capable of performing both display and photography tasks
2Adaptability or versatility
If photosensitive devices are integrated on the array substrate, then camera and display functions are unified, but light transmission may be compromised
Solution Approach 1:
The patent applies local quality by making the pixel electrodes transparent in regions where photosensitive devices are located. This allows light to pass through the pixel electrode layer to reach the photosensitive devices beneath, while other regions of the pixel electrodes maintain their normal opaque or translucent properties for display functionality. The transparent electrode material ITO is used to achieve this selective transparency
Solution Approach 2:
The pixel electrode acts as an intermediary structure that serves dual purposes: it functions as an electrode for display control while also being transparent to allow light passage to the photosensitive devices. This intermediary role resolves the conflict between display and light sensing requirements
3Adaptability or versatility
If a separate camera is disposed in a hole in the bezel region, then camera function is achieved, but display quality and appearance are affected
Solution Approach 1:
Instead of placing a separate camera in the bezel region, the patent merges the camera function into the display panel itself. The photosensitive device array is integrated on the array substrate, eliminating the need for holes in the bezel and maintaining the完整性 (integrity) of the display surface and bezel 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
Enables the integration of camera and display functions into a single LCD panel, enhancing the appearance and functionality of terminal devices by maintaining normal display performance while capturing images effectively.
Implementation Method 1
a photosensitive device array disposed on the array substrate
Data Source
AI summary
An LCD panel, a terminal device and a photo-sensing control method are provided. The LCD panel includes: a backlight source, an array substrate disposed on the backlight source; a photosensitive device array disposed on the array substrate; and a control circuit coupled to the photosensitive device array. By disposing the photosensitive device array on the array substrate of the LCD panel, a front panel of the terminal device is not required to be divided into multiple regions. Therefore, the camera function can be integrated into the LCD panel, and only the LCD panel is needed in the front panel of the terminal device which has both the display function and the camera function. The integration and appearance of the front panel of the terminal device is thus improved.