CN115968492A - 显示驱动电路及方法、led显示板和显示装置 - Google Patents

显示驱动电路及方法、led显示板和显示装置 Download PDF

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Publication number
CN115968492A
CN115968492A CN202080102691.XA CN202080102691A CN115968492A CN 115968492 A CN115968492 A CN 115968492A CN 202080102691 A CN202080102691 A CN 202080102691A CN 115968492 A CN115968492 A CN 115968492A
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China
Prior art keywords
circuit
data
gray scale
display
channel
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Pending
Application number
CN202080102691.XA
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English (en)
Inventor
韦科
刘德福
王伙荣
宗靖国
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Xi'an Ti Pt Sr Electronic Technology Co ltd
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Xi'an Ti Pt Sr Electronic Technology Co ltd
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Publication of CN115968492A publication Critical patent/CN115968492A/zh
Pending legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/12—Frame memory handling
    • G09G2360/121—Frame memory handling using a cache memory

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

一种显示驱动电路(10)及方法、以及LED显示板(400)和显示装置(900)。显示驱动电路(10)包括：接口电路(11)，用于获取多个灰度数据和多个电流增益数据；命令处理电路(12)，耦接接口电路(11)；缓存电路(13)，耦接接口电路(11)，用于缓存多个灰度数据和多个电流增益数据；电流源电路(15)，耦接命令处理电路(12)且包括多个通道电流源(151)；通道灰度控制电路(17)，耦接命令处理电路(12)、缓存电路(13)和电流源电路(15)，用于根据多个灰度数据分别控制多个通道电流源(151)的打开时长；以及通道电流控制电路(19)，耦接缓存电路(13)和电流源电路(15)，用于根据多个电流增益数据分别控制多个通道电流源(151)的输出电流大小。因此，可以实现通道电流动态调节以提升显示位深。

Description

PCT国内申请，说明书已公开。

Claims (20)

  1. PCT国内申请，权利要求书已公开。
CN202080102691.XA 2020-07-29 2020-07-29 显示驱动电路及方法、led显示板和显示装置 Pending CN115968492A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/105425 WO2022021123A1 (zh) 2020-07-29 2020-07-29 显示驱动电路及方法、led显示板和显示装置

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CN115968492A true CN115968492A (zh) 2023-04-14

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KR (1) KR20230022953A (zh)
CN (1) CN115968492A (zh)
WO (1) WO2022021123A1 (zh)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN114582275A (zh) * 2022-03-10 2022-06-03 中科芯集成电路有限公司 一种led显示驱动芯片的任意正整数组的均匀打散算法
CN115083339B (zh) * 2022-07-26 2023-01-03 惠科股份有限公司 一种显示面板的驱动方法及驱动装置
CN116403517B (zh) * 2023-06-09 2023-08-29 中科(深圳)无线半导体有限公司 一种led显示***电源自适应控制方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008099979A2 (en) * 2007-02-15 2008-08-21 Xmpdisplay Co., Ltd. Apparatus for driving led display panel
US20090108768A1 (en) * 2007-10-30 2009-04-30 Chih-Hsiang Yang Backlight control device and method for controlling a driving current of an led
CN109147653A (zh) * 2018-10-09 2019-01-04 中国电子科技集团公司第五十八研究所 一种led驱动芯片显示控制os-pwm方法
CN208580563U (zh) * 2018-08-13 2019-03-05 深圳市奥拓电子股份有限公司 Led驱动芯片及led显示屏
CN110191536A (zh) * 2019-05-24 2019-08-30 亿信科技发展有限公司 驱动控制电路、驱动控制芯片、集成封装器件、显示***和稀疏驱动的方法
CN110277052A (zh) * 2019-06-13 2019-09-24 华中科技大学 多行扫高刷新率的全彩led驱动芯片及驱动方法

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
JP3344080B2 (ja) * 1994-05-20 2002-11-11 日亜化学工業株式会社 マルチカラーのｌｅｄディスプレイユニット
CN101930349B (zh) * 2010-08-16 2012-01-11 深圳市洲明科技股份有限公司 Led扫描控制芯片
CN102708803B (zh) * 2012-06-27 2015-11-04 重庆邮电大学 实现led恒流驱动器灰度等级可控的方法及恒流驱动器
CN102779480B (zh) * 2012-08-17 2015-04-15 深圳市易事达电子股份有限公司 显示屏驱动电路及发光二极管显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008099979A2 (en) * 2007-02-15 2008-08-21 Xmpdisplay Co., Ltd. Apparatus for driving led display panel
US20090108768A1 (en) * 2007-10-30 2009-04-30 Chih-Hsiang Yang Backlight control device and method for controlling a driving current of an led
CN208580563U (zh) * 2018-08-13 2019-03-05 深圳市奥拓电子股份有限公司 Led驱动芯片及led显示屏
CN109147653A (zh) * 2018-10-09 2019-01-04 中国电子科技集团公司第五十八研究所 一种led驱动芯片显示控制os-pwm方法
CN110191536A (zh) * 2019-05-24 2019-08-30 亿信科技发展有限公司 驱动控制电路、驱动控制芯片、集成封装器件、显示***和稀疏驱动的方法
CN110277052A (zh) * 2019-06-13 2019-09-24 华中科技大学 多行扫高刷新率的全彩led驱动芯片及驱动方法

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KR20230022953A (ko) 2023-02-16
WO2022021123A1 (zh) 2022-02-03

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