Hinged Lid Frame for Side-Edge LCD Rim Width Reduction
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Solution Overview
Problem
Conventional side-edge type liquid crystal displays with bar-shaped light sources, such as cold cathode fluorescent lamps, suffer from high power consumption, heavy weight, and a large non-effective pixel area rim, leading to inefficiencies in thickness reduction and light emission.
Innovation Solution
A liquid crystal display incorporating a side-edge-type backlight with LEDs as a light source, featuring a frame with a hinged lid that can be opened and closed to reduce rim width, enhance light emission efficiency, and lower power consumption, while integrating a reflecting surface to minimize light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a bar-shaped light source (cold cathode fluorescent lamp) is used in a side-edge-type backlight, then the backlight can illuminate the liquid crystal panel, but the rim part area increases, power consumption increases, and weight increases
Solution Approach 1:
The patent changes the fundamental parameter of the light source from cold cathode fluorescent lamps to LEDs (light emitting diodes). This parameter change results in significantly lower power consumption while maintaining the side-edge-type backlight configuration and its illumination effectiveness.
2Illumination intensity
If a bar-shaped light source (cold cathode fluorescent lamp) is used in a side-edge-type backlight, then the backlight can illuminate the liquid crystal panel, but the rim part area increases, power consumption increases, and weight increases
Solution Approach 1:
The patent changes the fundamental parameter of the light source from cold cathode fluorescent lamps to LEDs (light emitting diodes). This parameter change results in significantly reduced weight while maintaining the side-edge-type backlight configuration and its illumination effectiveness.
3Illumination intensity
If a bar-shaped light source (cold cathode fluorescent lamp) is used in a side-edge-type backlight, then the backlight can illuminate the liquid crystal panel, but the rim part area increases
Solution Approach 1:
The patent changes the fundamental parameter of the light source from cold cathode fluorescent lamps to LEDs (light emitting diodes). This parameter change enables more efficient light emission that reduces the required rim part area while maintaining adequate backlight illumination.
4Area of stationary object
If the lid is closed to reduce rim width, then the rim width decreases and light emission efficiency improves, but access to the gate COF becomes difficult
Solution Approach 1:
The patent applies a hinged lid mechanism that can dynamically change between open and closed states. When open, it provides access to the gate COF for installation or maintenance. When closed, it reduces the rim width to improve light emission efficiency and achieve the desired thin profile.
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 use of LEDs in a side-edge-type backlight configuration reduces power consumption, improves light emission efficiency, and minimizes the rim width, achieving a thinner and more efficient liquid crystal display with reduced component count and manufacturing costs.
Implementation Method 1
side-edge-type backlights having a light emitting diode disposed on left and right side surfaces of the liquid crystal panel
Implementation Method 2
The light emitted from the bar-shaped light source is incident on the side of the light guide plate and guided by the light guide plate and a reflecting sheet
Implementation Method 3
The lid is preferably connected to the frame via a hinge in such a manner that the lid is capable of being opened and closed
Data Source
AI summary
A liquid crystal display has a liquid crystal panel, a gate chip on film (COF) disposed at a side of a side surface of the liquid crystal panel, side-edge-type backlights having a light emitting diode disposed on left and right side surfaces of the liquid crystal panel, and a cover and a frame that hold the liquid crystal panel and the backlights, the frame has an opening disposed at a position corresponding to the position of the gate COF into which the gate COF is inserted, and a lid for covering the gate COF inserted in the opening is connected to the frame in such a manner that the lid is capable of being opened and closed.