Thin LCD TVs Break Faster: Key Results After 10,000 Hours
RTINGS com R&D
11 min, 7 sec
A detailed exploration of the durability issues prevalent in thin, edge-lit LCD TVs compared to other designs.
Summary
- Edge-lit LCD TVs with edge-mounted lighting are more prone to durability issues like warped reflector sheets, cracked light guide plates, and burnt-out LEDs.
- The study reveals that edge-lit designs fail faster due to poor heat management, affecting long-term reliability.
- Manufacturers continue producing thin TVs despite these issues because of consumer demand for sleek designs.
- To mitigate potential durability issues, consumers can lower brightness settings and avoid placing TVs near heat sources.
- For better durability, it is recommended to consider TVs with direct-lit or full-array local dimming backlighting.
Chapter 1
Overview of the 100 TV longevity test conducted to assess durability issues in modern TVs.
- The test aims to identify failure points in TVs through extended durability testing.
- Edge-lit LCD TVs have been observed to possess significant durability issues.
Chapter 2
Examination of problems specific to edge-lit LCD TVs after prolonged use at maximum brightness.
- Failures manifest as warped reflector sheets, cracked light guide plates, and burnt-out LEDs.
- These issues are not isolated to lab test TVs but are also seen in consumer-owned models.
Chapter 3
Chapter 4
Chapter 5
A deeper look into the design of edge-lit TVs and their susceptibility to heat-related damage.
- Edge-lit TVs have LED lighting mounted along the edges, leading to thin designs but also durability problems.
- The concentration of heat along the edges causes warping, cracks, and burnouts.
Chapter 6
Analysis of heat distribution in edge-lit TVs compared to other models.
- Edge-lit TVs show a significant heat gradient, leading to warping and cracking of internal components.
- Full-array local dimming TVs have better heat distribution due to LEDs spread across the back.
Chapter 7
Exploration of specific components in edge-lit TVs that are prone to failure and how they manifest.
- Warping of the reflector sheet and cracking of the light guide plate are common failure points.
- LEDs can burn out or display a bluish tint due to phosphor degradation.
Chapter 8
Advice for consumers regarding the use and purchase of edge-lit TVs.
- Lowering brightness settings can delay the onset of heat-related issues.
- Consider brighter models than needed to keep brightness lower and extend TV life.
- Prioritize direct-lit or full-array local dimming models for better durability.
Chapter 9
Concluding remarks on the longevity test findings and responses from TV manufacturers.
- Edge-lit TV designs inherently have a higher failure rate due to design issues.
- LG and Samsung responded to the findings; LG did not notice a higher defect rate, while Samsung maintains quality assurance.