A display panel is disclosed. The display panel comprises an excitation light emitting unit, a wavelength conversion unit which contains quantum dots, and a glass substrate, wherein excitation light coming from the excitation light emitting unit enters into the wavelength conversion unit, a wavelength of the excitation light is converted into a needed wavelength for image display by the wavelength conversion unit, and then the excitation light exits from the glass substrate. The display panel according to the present disclosure has a larger color gamut.