中文
含义
液晶面板故障。屏幕出现不可修复的物理或电气损坏——竖线、横带、碎屏、漏液、大面积色块或触控失灵。此故障通常意味着面板本身已损坏，维修成本接近整机价值。
常见原因
- 屏幕受到外力撞击或挤压导致液晶层破裂，出现放射状裂纹或彩色渗漏
- COF（Chip-On-Film）驱动排线从玻璃基板脱落，产生贯穿屏幕的竖线条纹
- 面板内部TFT阵列晶体管老化或短路，导致大面积像素点异常
- 屏幕驱动Gate IC或Source IC损坏，造成画面上半部或下半部完全黑屏
- 潮湿环境导致面板边缘电路腐蚀，故障区域随时间扩大
自助排查
- 用手指轻压屏幕边缘的排线区域，观察竖线是否暂时消失（确认COF排线接触问题）
- 清洁屏幕表面确认物理损伤不是灰尘或污渍误判
- 如果外观无物理损伤，可尝试恢复出厂设置以排除软件引起的显示异常
- 若竖线或暗区持续存在，面板已不可修复，需评估更换费用是否值得
English
Meaning
LCD panel failure. Physically or electrically damaged screen — vertical lines, horizontal bands, cracked glass, liquid crystal leakage, large discolored areas, or unresponsive touch. This fault typically means the panel itself is beyond repair and replacement cost approaches that of a new TV.
Common Causes
- Physical impact or pressure cracking the liquid crystal layer, producing radial cracks or colored leakage
- COF (Chip-On-Film) driver tape lifted from the glass substrate, causing persistent vertical lines
- Aged or shorted TFT array transistors inside the panel causing large clusters of dead pixels
- Failed Gate IC or Source IC driver causing the upper or lower half of the screen to go completely black
- Moisture corrosion of panel edge circuitry, with the defective area expanding over time
Self-Check Steps
- Gently press the ribbon area along the panel edge — if vertical lines temporarily disappear, confirms a COF contact issue
- Clean the screen surface to confirm visible marks are not dirt or smudges
- If no physical damage is visible, try a factory reset to rule out software-related display anomalies
- If vertical lines or dark areas persist, the panel is irreparable; evaluate whether replacement cost justifies repair