Title:
LED DISPLAY DRIVE CHIP AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/134051
Kind Code:
A1
Abstract:
The present invention belongs to the intersecting technical field of integrated circuits and LED displays. Disclosed are an LED display drive chip and the application thereof. With regard to the existing problems in the prior art of a bit width being greatly limited under a display condition of the refresh rate being relatively high due to the fact that an ultra-high-density LED such as a Mini-LED needs to balance an allocation relationship between a display effect and a bit width, etc., in the present invention, on the basis of existing dual-latch and PWN chip architectures, the application of a PAM and PWM hybrid modulation method to a drive chip architecture is proposed to replace existing PWM control modes, so as to achieve better image grayscale uniformity in a low current mode; and a DAC low current accurate control circuit is used to acquire a more accurate current output, so as to satisfy the application performance requirement for the display of an ultra-high-density LED. Therefore, data can be processed to achieve a better drive effect, thereby satisfying the application performance requirement for the display of an ultra-high-density LED.
Inventors:
JIANG ZHAOYU (CN)
ZHANG RUOPING (CN)
ZHAO MAO (CN)
CHEN JUNJIE (CN)
ZHANG RUOPING (CN)
ZHAO MAO (CN)
CHEN JUNJIE (CN)
Application Number:
PCT/CN2022/088159
Publication Date:
July 20, 2023
Filing Date:
April 21, 2022
Export Citation:
Assignee:
PURESEMI CO LTD (CN)
International Classes:
G09G3/32
Foreign References:
| CN114067732A | 2022-02-18 | |||
| CN112908244A | 2021-06-04 | |||
| CN112636761A | 2021-04-09 | |||
| CN113066423A | 2021-07-02 | |||
| CN110556072A | 2019-12-10 |
Attorney, Agent or Firm:
RAYTO PARTNERS, P.C. (CN)
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