Integrated Optical Detection Circuit for Display Brightness Control
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Solution Overview
Problem
Existing electronic devices with LCD display panels that use optical sensors for brightness adjustment face high costs due to the independent and costly nature of optical sensors, as well as reduced screen-to-body ratios and increased board space requirements.
Innovation Solution
A brightness control apparatus integrated into the display panel, comprising an optical detection circuit with transistors to detect light intensity and generate electrical signals, and an integrated circuit chip to process these signals and adjust display brightness, thereby reducing costs and increasing screen-to-body ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an independent optical sensor is used to detect light intensity and adjust display brightness, then brightness control function is achieved, but device cost increases and screen-to-body ratio decreases
Solution Approach 1:
The patent integrates the optical detection circuit directly into the display panel by sharing the transistor array resource. The same transistors that control pixel operations are utilized for light intensity detection, merging the display function and sensing function into a single integrated structure. This eliminates the need for separate optical sensors and reduces device complexity while maintaining brightness control reliability
Solution Approach 2:
The transistor array in the display panel is designed to serve dual purposes: driving pixel elements for display and detecting ambient light intensity for brightness adjustment. By making the transistor array universal, the patent eliminates redundant components and reduces overall device cost while achieving reliable brightness control functionality
2Reliability
If an independent optical sensor is used to detect light intensity, then brightness control function is achieved, but board space increases
Solution Approach 1:
The optical detection circuit is merged with the display panel structure, using the same transistor array and pixel electrode infrastructure. This integration eliminates the need for separate sensor modules and reduces the occupied board space while maintaining the brightness control function
3Difficulty of detecting and measuring
If transistors are used in the optical detection circuit to detect light intensity, then detection function is achieved, but circuit complexity increases
Solution Approach 1:
The transistor array originally designed for pixel driving is made universal to also perform light detection. By reusing the existing transistor infrastructure for dual purposes, the patent avoids adding complex dedicated sensing circuits while achieving accurate light intensity detection capability
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 integrated brightness control apparatus reduces the overall cost of electronic devices by eliminating the need for separate optical sensors, saves space on the main board, and enhances the screen-to-body ratio, allowing for a full-screen display.
Implementation Method 1
The optical detection circuit includes at least one transistor, configured to detect a light intensity of light to be detected corresponding to an environment where the display panel is located, and generate an electrical signal corresponding to the light intensity of the light to be detected
Data Source
AI summary
Disclosed are a brightness control apparatus and method, and a display apparatus. The brightness control apparatus includes an optical detection circuit and an integrated circuit chip connected with the optical detection circuit. The optical detection circuit includes at least one transistor, configured to detect a light intensity of light to be detected corresponding to an environment where a display panel is located, and generate an electrical signal corresponding to the light intensity of the light to be detected.