US 12,436,568 B2
Circuit board and electronic device
Xiaoyong Dong, Shenzhen (CN); Xiaoyong Wang, Shenzhen (CN); and Chaoliang Yang, Shenzhen (CN)
Assigned to Honor Device Co., Ltd., Shenzhen (CN)
Appl. No. 18/015,486
Filed by Honor Device Co., Ltd., Shenzhen (CN)
PCT Filed Sep. 7, 2022, PCT No. PCT/CN2022/117561
§ 371(c)(1), (2) Date Jan. 10, 2023,
PCT Pub. No. WO2023/051206, PCT Pub. Date Apr. 6, 2023.
Claims priority of application No. 202111165965.2 (CN), filed on Sep. 30, 2021; and application No. 202210101437.9 (CN), filed on Jan. 27, 2022.
Prior Publication US 2024/0264632 A1, Aug. 8, 2024
Int. Cl. G06F 1/16 (2006.01); H05K 1/14 (2006.01); H05K 1/18 (2006.01)
CPC G06F 1/1637 (2013.01) [G06F 1/1658 (2013.01); H05K 1/147 (2013.01); H05K 1/189 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A circuit board for an electronic device comprising a screen with a screen chip, the circuit board comprising:
a main board with a first connector;
a sub-board with a second connector; and
a flexible circuit board connected to the main board by the first connector and connected to the sub-board by the second connector;
wherein the flexible circuit board is further connected to the screen chip located on the screen;
wherein a target circuit is arranged on the sub-board, a signal input terminal of a target signal type on the target circuit is connected to a signal input terminal also of the target signal type on the sub-board, the target signal type comprises at least one of a power signal, a control signal, or a data signal; and
wherein the target circuit comprises a screen power chip and a speaker power amplifier, and both the screen power chip and the speaker power amplifier are connected to the flexible circuit board through the second connector, wherein the target circuit comprises the speaker power amplifier connected between the second connector and a speaker, wherein the speaker power amplifier comprises a first speaker power amplifier and a second speaker power amplifier, wherein the first speaker power amplifier is configured to process an analog sound signal, and wherein the second speaker power amplifier is configured to process a digital sound signal.