Shielding Electrode and Light Blocking Member for Curved LCD
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Solution Overview
Problem
Liquid crystal display (LCD) devices face issues with display quality deterioration and short-circuit risks when curved, due to light leakage and squashing of the liquid crystal layer between panels.
Innovation Solution
The LCD device incorporates a first insulation substrate with a gate line, data line, thin film transistor, light blocking members, shielding electrode, and a liquid crystal layer between pixel and common electrodes, with the shielding electrode and pixel electrode formed from the same material and applied the same voltage, and a light blocking member positioned to prevent light leakage and substrate short-circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is curved to enhance immersion and realism, then viewer immersion and realism are improved, but the liquid crystal layer is squashed causing light leakage and display quality deterioration
Solution Approach 1:
The invention introduces a light blocking member that divides the display structure into distinct regions: a curved display region and a flat light blocking region. This segmentation allows the display panel to be curved for immersion while preventing light leakage at the edges through the flat light blocking member, thus resolving the contradiction between curved display capability and display quality
Solution Approach 2:
The light blocking member acts as an intermediary element between the curved display panel and the substrate. It absorbs or blocks the light that would otherwise leak through the squashed liquid crystal layer in curved regions, thereby maintaining display quality while allowing the panel to be curved
2Adaptability or versatility
If the display panel is curved, then immersion and realism are enhanced, but short-circuit between panels occurs due to liquid crystal squashing
Solution Approach 1:
The light blocking member is positioned and fixed before the potential short-circuit issue can occur. By establishing a rigid structural barrier in advance, the invention prevents liquid crystal material from being squashed into conductive paths between the pixel electrode and common electrode during panel curvature, thus preventing short-circuits
Solution Approach 2:
The light blocking member serves as a physical intermediary that maintains electrical insulation between the upper and lower substrates in curved regions. Its rigid structure prevents direct contact between conductive elements that would otherwise occur due to liquid crystal squashing, ensuring reliable electrical insulation
3Reliability
If a light blocking member is added to prevent light leakage, then display quality is improved, but device complexity increases
Solution Approach 1:
The light blocking member is designed to perform multiple functions simultaneously: it blocks light leakage to improve display quality, provides structural support to maintain panel curvature, and prevents short-circuits by maintaining electrical insulation. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity
Solution Approach 2:
The invention merges the light blocking function with the structural support function in a single integrated component. The light blocking member is combined with the substrate or frame structure, eliminating the need for separate light blocking elements and thus minimizing the increase in device 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 maintains display quality and prevents short-circuits even when the LCD is curved, by controlling luminance and stabilizing the electric field, thereby enhancing side visibility and preventing light leakage.
Implementation Method 1
The LCD generates an electric field on the liquid crystal layer by applying a voltage to the electrodes of the panels
Implementation Method 2
realigns liquid crystal molecules of the liquid crystal layer through the generated field, and controls transmittance of light
Implementation Method 3
the shielding electrode and pixel electrode may be simultaneously formed of the same material. The shielding electrode and the common electrode may be applied with the same voltage
Data Source
AI summary
An exemplary embodiment of the present invention provides a liquid crystal display (LCD) device including: a first insulation substrate; gate and data lines positioned on the first insulation substrate and electrically insulated to cross each other; a thin film transistor coupled to the gate line and the data line; a first light blocking member positioned on the data line; a shielding electrode positioned on the first light blocking member; a pixel electrode coupled to the thin film transistor; a second insulation substrate positioned to face the first insulation substrate; a common electrode positioned on the second insulation substrate; and a liquid crystal layer disposed between the pixel electrode and the common electrode.