ThinkPad were introduced in 2011. ThinkPad ThinkPad is a line of laptop computers and tablets designed, developed, and sold by Lenovo, and formerly IBM. ThinkPads are known for their minimalist, black, and boxy design which was initially modeled in 1990 by industrial designer Richard Sapper, based on the concept of a traditional Japanese "Bento" lunchbox revealing its nature only after being opened. According to later interviews with Sapper, he also characterized the simple ThinkPad form to be as elementary as a simple, black cigar box, and with similar proportions that offers a 'surprise' when opened. The line was first developed at
ThinkPad Tablet Lenovo said he believed the ThinkPad Tablet to be "the weapon of choice for business success". In his article on the development of the Tablet, he indicated that every design detail was subjected to multiple design reviews, including basic elements such as the placement of the logo. A challenge was indicated to be designing and integrating a digitizer pen into the Tablet, which already had a "crowded interior". This required a study of pen barrel diameter and the balancing of batteries, digitizer technology components, ergonomics, and storage space constraints for the pen itself. Additionally, dowel rods were used for diameter