Abstract: A display device is provided. The display device includes a first display area and a second display area. The display device includes: a lamp panel, a diffusion plate, a camera, an optical film group, a light control panel, and a shading layer. A first light source of the lamp panel surrounds the camera. A first reflecting layer surrounding the camera is attached to an outer surface of the camera, so that the first display area simultaneously has a picture display function and an image pickup function.

Abstract: A method for detecting a dissolution rate of a preparation containing colloidal bismuth pectin includes steps of: according to “Pharmacopoeia of the People's Republic of China, 2010 Edition, Volume 2, Appendix XC”, dispersing the preparation containing the colloidal bismuth pectin into dissolution medium, and directly obtaining dissolution liquid; adding a protonic acid dissociation agent into the dissolution liquid until a hydrogen ion concentration reaches 0.8-1.2 mol/L; centrifuging for separating a supernatant; coloring the supernatant by adding a chromogen solution of citric acid or ascorbic acid and potassium iodide to obtain a test solution; calculating a dissolution amount, which is accounted by bismuth, of the colloidal bismuth pectin with a spectrophotometry method. The method of the present invention well detects dissolution curves and rates of the colloidal bismuth pectin in the preparation thereof, satisfying quality control requirements.

Abstract: A dispersion preparation containing colloidal bismuth pectin is provided. 1 g is adopted as a unit for the preparation. Each unit of the preparation includes: 44.0 to 900.0 mg of colloidal bismuth pectin, 1.0-500 mg of a penetration enhancer, 2.0-312.5 mg of acid-source pore forming agent, 2.0-250.0 mg of alkali-source pore forming agent and 1.0-400.0 mg of a disintegrating agent.