Excuse me, which world-famous enterprises are there in the design direction of integrated circuit IC?

As far as pure IC design enterprises are concerned, the larger ones in the world are:

Qualcomm, Broadcom, NVIDIA, SanDisk, Marvell, LSI Logic, MediaTek, Xilinx, Avago, Altera.

Major domestic:

Huada, Hayes, Spreadtrum, Datang Micro, Zhuhai Juli, China Resources Silicon Industry, Hangzhou Silanwei, Zhongxing Micro, Shanghai Hua Hong, Tsinghua Tongfang Microelectronics, etc.