Based on passively mode-locked Yb-doped fiber lasers, the effect of intracavity filtering bandwidth on the generation of bound-state solitons in normal dispersion regime is studied experimentally. A heavily Yb-doped fiber as gain medium and a semiconductor saturable absorber mirror as mode-locked element are used to obtain the 1064 nm all-fiber linear cavity mode-locked laser. Different picosecond mode-locked pulse states are observed when the bandwidths of 0.2, 1.0, 1.2, and 2.3 nm of intracavity bandpass filter are selected. When the filtering bandwidth is narrow (0.2 nm) or broad (2.3 nm), only stable dissipative solitons are obtained. In contrast, when the filtering bandwidth is moderate (1.0 nm or 1.2 nm), we respectively observe the typical π and -π/2 bound-state dissipative solitons both with the pulse width of 3 ps and pulse interval of 14 ps. Then the bound-state soliton laser is amplified to 1.4 W by the master oscillator power amplification technique and injected into a photonic crystal fiber, generating the supercontinuum spectrum with the spectral width of 10 dB in 750-1600 nm and the output power of 0.7 W, whose spectral flatness is better than that pumped by the traditional dissipative soliton.