https://finance.yahoo.com/news/everything-need-know-buying-new-tv-201912334.html

HDR TVs are essentially televisions with screens that offer high contrast ratios. That means there’s a greater difference between the darkest the image can appear and the brightest it can appear. HDR also brings along a wider color gamut, which means your TV is able to show a larger range of colors than standard sets. Between 4K and HDR, HDR easily offers the most noticeable improvement in terms of image quality." data-reactid="38">HDR TVs are essentially televisions with screens that offer high contrast ratios. That means there’s a greater difference between the darkest the image can appear and the brightest it can appear. HDR also brings along a wider color gamut, which means your TV is able to show a larger range of colors than standard sets. Between 4K and HDR, HDR easily offers the most noticeable improvement in terms of image quality.

These are TVs that use LEDs, or light-emitting diodes, for their backlighting rather than cold-cathode fluorescent lights, which are less power efficient. Chances are if you’re buying an LCD TV today, it will have LEDs." data-reactid="40">These are TVs that use LEDs, or light-emitting diodes, for their backlighting rather than cold-cathode fluorescent lights, which are less power efficient. Chances are if you’re buying an LCD TV today, it will have LEDs.