KR970050051A

KR970050051A - Liquid crystal drive output circuit for driving liquid crystal display

Info

Publication number: KR970050051A
Application number: KR1019950062026A
Authority: KR
Inventors: 정기석
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-12-28
Filing date: 1995-12-28
Publication date: 1997-07-29

Abstract

본 발명은 액정 디스플레이를 구동하기 위한 액정구동 출력회로에 관한 것으로, 특히 표시화면을 완만하게 이동할 수 있는 스크롤 기능을 가진 액정 디스플레이를 구동하기 위한 액정구동 출력회로에 관한 것이다.The present invention relates to a liquid crystal drive output circuit for driving a liquid crystal display, and more particularly, to a liquid crystal drive output circuit for driving a liquid crystal display having a scroll function capable of smoothly moving a display screen.

마이크로프로세서로부터 입력되는 스크롤 시키고자 하는 데이타의 양을 나타내는 입력데이타(SQ)와 문자데이타(CHR)를 한 비트씩 수신하여 스크롤 시키고자 하는 데이타의 양만큼 레지스터에 저장하고 나머지 부분만 한비트씩 출력하는 도트스크롤수단(10), 도트스크롤수단(10)의 출력을 수신하여 이를 좌측 또는 우측으로 한비트씩 쉬프트하는 쉬프트레지스터(20), 상기의 쉬프트레지스터(20)의 쉬프트가 완료될때 쉬프트레지스터(20)의 출력을 수신하여 이를 래치하는 래치수단(30) 및 래치수단(30)에 저장된 데이타를 수신하여 액정구동출력(O)을 출력하는 세그먼트 드라이버(40)로 구성된다.Receives one bit of input data (SQ) and character data (CHR) indicating the amount of data to be scrolled from the microprocessor and stores it in the register as much as the amount of data to be scrolled and outputs only one bit The shift register 20 which receives the output of the dot scroll means 10, the dot scroll means 10 and shifts it by one bit to the left or the right, and the shift register 20 when the shift of the shift register 20 is completed. It comprises a latch means 30 for receiving the output of the latch and latching it and a segment driver 40 for receiving the data stored in the latch means 30 to output the liquid crystal drive output (O).

Description

Liquid crystal drive output circuit for driving liquid crystal display

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 액정 디스플레이를 구동하기 위한 액정구동 출력회로,2 is a liquid crystal drive output circuit for driving a liquid crystal display of the present invention,

제3도는 도트 스크롤 회로도이다.3 is a dot scroll circuit diagram.

Claims

In a liquid crystal display driving a liquid crystal display, an input data and a character data indicating the amount of data to be scrolled from a microprocessor are received one bit and stored in a register as much as the amount of data to be scrolled. Dot scroll means for outputting only one bit; A shift register which receives the output of the dot scroll means and shifts it bitwise to the left or the right; Latch means for receiving an output of the shift register and latching the shift register when the shift register is completed; And a segment driver for receiving data stored in the latch means and outputting a liquid crystal drive output.

2. The apparatus of claim 1, wherein the dot scroll means comprises: decoder means for receiving input data indicating an amount of data to be scrolled input from a microprocessor, decoding the input data, and outputting switching control signals; A register composed of a plurality of flip-flops that receive character data bit by bit and store an amount of data to be scrolled; And a plurality of switches that are turned on or off in accordance with the switching control signals of the decoder means, one terminal of the first switch of the plurality of switches is connected to character data, and one terminal of each of the remaining switches is A liquid crystal drive output circuit connected to an output of each flip-flop of the register, and each other terminal of the plurality of switches is connected in common and has switching means for outputting the remaining data by one bit. .

※ Note: The disclosure is based on the initial application.