Display screen driving circuit, driving chip and display

By introducing a counting module, a constant current output module and a pre-charge module into the display drive circuit, the display abnormality caused by the instability of clock and reference current after the display is powered on, and the register is not configured, and normal display effect is achieved.

CN119694241APending Publication Date: 2025-03-25CHENGDU LIPPXIN MICROELECTRONIC CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202411673137.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

After powering on, the display abnormality such as the screen flashing randomly due to the instability of the clock and reference current and the registers not configured.

Method used

A display driver circuit is designed, including a counting module, a constant current output module and a pre-charge module. After the driving circuit is powered on, the counting module counts the received display frames and outputs an enable signal when the counting value reaches the preset value. The constant current output module lights the lamp beads in response to the enable signal. The precharge module controls the lamp beads not to light up before the second enable signal to avoid display abnormalities.

Benefits of technology

Through this driving circuit, display abnormalities caused by instability of clock and reference current and not being configured by registers can be effectively avoided, so as to ensure that the display screen can display images normally after power-on.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a display screen driving circuit, a driving chip and a display. The driving circuit comprises a counting module, a constant current output module and a pre-charging module. The counting module is electrically connected with the constant current output module and the pre-charging module, and is used for counting the received display frames after the driving circuit is electrified, outputting a first enable signal when a count value reaches a first preset value N1, and outputting a second enable signal when the count value reaches a second preset value N2; the constant current output module responds to the first enable signal and the second enable signal and outputs constant current according to the N3th frame and the display frame after the N3th frame so as to light a lamp bead; wherein the pre-charging module controls the lamp bead not to be lightened before receiving the second enable signal, and the N3th frame is a display frame corresponding to the larger one of the first preset value N1 and the second preset value N2. According to the display screen driving circuit, the driving chip and the display, the power-on display abnormity of the display screen can be effectively avoided.
Need to check novelty before this filing date? Find Prior Art