A display device , comprising : a frame , wherein a width of the frame is adjustable; a flexible screen installed on the frame , wherein a width of the flexible screen is adjustable. the frame comprising: a case formed with a plurality of sliding chutes parallel to each other, wherein each sliding chute comprises a first chute mouth and a second chute mouth opposite to the first chute mouth ; a first bracket comprising a first sliding block , wherein the first sliding block is slidably inserted into at least one sliding chute , and the first sliding block passes through the first chute mouth of the sliding chute ; and a second bracket comprising a second sliding block , wherein the second sliding block is slidably inserted into at least one sliding chute , and the second sliding block passes through the second chute mouth of the sliding chute ; characterized in that a brake locking mechanism is provided between the first sliding block and a corresponding sliding chute , the brake locking mechanism comprises a lock tongue and a latch , the lock tongue is a flexible lock tongue and is elastically arranged inside the first sliding block 1021, a shape of the lock tongue is a fan-shaped protruding structure, and the latch is located at the sliding chute near the first chute mouth . a frame , wherein a width of the frame is adjustable; a flexible screen installed on the frame , wherein a width of the flexible screen is adjustable. the frame comprising: a case formed with a plurality of sliding chutes parallel to each other, wherein each sliding chute comprises a first chute mouth and a second chute mouth opposite to the first chute mouth ; a first bracket comprising a first sliding block , wherein the first sliding block is slidably inserted into at least one sliding chute , and the first sliding block passes through the first chute mouth of the sliding chute ; and a second bracket comprising a second sliding block , wherein the second sliding block is slidably inserted into at least one sliding chute , and the second sliding block passes through the second chute mouth of the sliding chute ; characterized in that a brake locking mechanism is provided between the first sliding block and a corresponding sliding chute , the brake locking mechanism comprises a lock tongue and a latch , the lock tongue is a flexible lock tongue and is elastically arranged inside the first sliding block 1021, a shape of the lock tongue is a fan-shaped protruding structure, and the latch is located at the sliding chute near the first chute mouth . a case formed with a plurality of sliding chutes parallel to each other, wherein each sliding chute comprises a first chute mouth and a second chute mouth opposite to the first chute mouth ; a first bracket comprising a first sliding block , wherein the first sliding block is slidably inserted into at least one sliding chute , and the first sliding block passes through the first chute mouth of the sliding chute ; and a second bracket comprising a second sliding block , wherein the second sliding block is slidably inserted into at least one sliding chute , and the second sliding block passes through the second chute mouth of the sliding chute ; characterized in that a brake locking mechanism is provided between the first sliding block and a corresponding sliding chute , the brake locking mechanism comprises a lock tongue and a latch , the lock tongue is a flexible lock tongue and is elastically arranged inside the first sliding block 1021, a shape of the lock tongue is a fan-shaped protruding structure, and the latch is located at the sliding chute near the first chute mouth . <EOS>