Display Device Light-Shielding Member Blocks Drive Circuit
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Solution Overview
Problem
In display devices, relatively strong light can cause malfunctions in the drive circuit, which is critical for driving the display pixels.
Innovation Solution
The display device incorporates a color separation element between the display panel and the light source device to disperse light into different wavelengths, and a light-shielding member within the display panel to block direct light from reaching the drive circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source device emits strong light toward the display panel, then the display brightness is improved, but the drive circuit may malfunction due to light exposure
Solution Approach 1:
The patent segments the light path by introducing a light-shielding member that divides the backlight unit into a display region (where light passes to the pixel) and a non-display region (where the drive circuit is located). This segmentation allows the light source to emit strong light for bright display while preventing light from reaching the drive circuit, thus resolving the contradiction between display brightness and drive circuit reliability.
2Ease of manufacture
If light is dispersed into multiple wavelengths for color separation, then the color display performance is improved, but the complexity of the optical system increases
Solution Approach 1:
The patent merges the color separation function with the light-shielding function by integrating a color separation element into the light-shielding member. This single integrated component simultaneously performs wavelength separation for color display and light blocking for drive circuit protection, thereby improving color display performance while minimizing the increase in optical system complexity.
3Reliability
If a light-shielding member is added to block light from the drive circuit, then the drive circuit reliability is improved, but the device structure becomes more complex
Solution Approach 1:
The light-shielding member is designed as a multi-functional component that simultaneously serves as a structural support element, a light-blocking barrier, and a mounting substrate for the color separation element. By赋予 this single component multiple functions, the patent protects the drive circuit from light exposure while minimizing the increase in overall device structure complexity.
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 effectively prevents strong light from hitting the drive circuit, thereby preventing malfunctions and ensuring reliable operation of the display device even under high light conditions.
Implementation Method 1
the color separation element being configured to disperse the emitted light and to emit, to the pixel, a plurality of rays of separated light with wavelengths different from each other
Implementation Method 2
the light-shielding member being configured to block the emitted light heading toward the drive circuit
Data Source
AI summary
A display device includes a display panel including a pixel and a drive circuit configured to drive the pixel, a light source device configured to emit emitted light toward the display panel, a color separation element placed between the display panel and the light source device, the color separation element being configured to disperse the emitted light and to emit, to the pixel, a plurality of rays of separated light with wavelengths different from each other, and a light-shielding member placed in the display panel, the light-shielding member being configured to block the emitted light heading toward the drive circuit.