KR940009730A - LCD Display - Google Patents
LCD Display Download PDFInfo
- Publication number
- KR940009730A KR940009730A KR1019930020719A KR930020719A KR940009730A KR 940009730 A KR940009730 A KR 940009730A KR 1019930020719 A KR1019930020719 A KR 1019930020719A KR 930020719 A KR930020719 A KR 930020719A KR 940009730 A KR940009730 A KR 940009730A
- Authority
- KR
- South Korea
- Prior art keywords
- voltage
- circuit
- voltages
- output
- display data
- Prior art date
Links
Classifications
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (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)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
다계조 또는 다색표시가 가능한 액정표시장치에 관한 것으로써, 분압회로로 전압을 분압하고, 분압된 전압으로 액정을 구동하는 경우에 충전 및 방전시간을 단축하기 위해, 액정표시용 전원에서 공급되는 n개의 전압(121)을 표시데이타에 대응한 m개의 전압(n,m)으로 분압하는 분압회로(120), 1수평수사기간중 제1의 기간은 제1의 전압을 출력하는 것을 지시하고, 계속되는 제2의 기간은 제2의 전압을 출력하는 것을 지시하는 제어신호(118)에 따르고, 제1의 기간은 상기 분압된 m개의 전압을 공급하는 회로중에서 표시데이터에 대응한 전압을 출력하는 회로의 시정수를 넘지 않는 시정수를 갖는 회로를 선택하도록 표시데이터에 대응한 신호(116)을 수정해서 출력하고, 제2의 기간은 상기 신호(116)을 그대로 출력하는 게이트회로(117)을 갖고, 분압회로(120)은 상기 게이트회로(117)이 출력하는 신호(119)를 입력받아 전압을 선택해서 출력한다. 이러한 액정표시장치를 사용하는 것에 의해 저항소자를 개재하지 않고, n개의 전압에서 선택한 1전압을 버퍼수단을 사용하지 않고 선택수단으로 직접 출력하는 것에 의해 출력 임피던스를 작게하는 것이 가능해져, 액정패널을 고속으로 구동할 수 있다. 즉, 분압회로를 갖는 X 구동회로의 분압회로로 직접 용량성의 부하를 구동하는 경우, 충전 및 방전시간을 단축할 수 있다. 또 현상의 액정표시장치보다 고저항화, 단시간 충전 및 방전이 필요로 되는 1280×1024도트 이상의 고화질의 액정표시장치나 20인치 이상의 대화면 액정표시장치의 구동이 가능해지고, 저항을 사용해서 분압하는 분압회로에 있어서는 저항값을 내릴 필요가 없으므로, 소비전력의 증가를 최소로 할 수 있고, 정밀도가 높은 출력을 얻을 수 있다. 또, 출력전압폭을 전원전압폭과 같게 할 수 있으며, 선택수단으로 선택되는 다른 2개의 전압의 전위차로 출력로프세트 전압의 크기를 제어할 수 있다.A liquid crystal display device capable of multi-gradation or multi-color display, wherein the voltage is divided by a voltage dividing circuit and n is supplied from a power supply for liquid crystal display to shorten the charging and discharging time when driving the liquid crystal with the divided voltage. A voltage divider circuit 120 for dividing the two voltages 121 into m voltages n and m corresponding to the display data, wherein a first period of one horizontal scanning period instructs to output a first voltage. The second period is in accordance with the control signal 118 instructing to output the second voltage, and the first period is a circuit for outputting a voltage corresponding to the display data among the circuits for supplying the divided m voltages. Has a gate circuit 117 that modifies and outputs the signal 116 corresponding to the display data so as to select a circuit having a time constant that does not exceed the time constant, and in the second period, outputs the signal 116 as it is. The voltage divider circuit 120 is The signal 119 output from the gate circuit 117 is input to select and output a voltage. By using such a liquid crystal display device, it is possible to reduce the output impedance by directly outputting one voltage selected from n voltages to the selection means without using a buffer means without interposing a resistance element, thereby reducing the liquid crystal panel. Can drive at high speed. That is, when driving the capacitive load directly by the voltage dividing circuit of the X driving circuit having the voltage dividing circuit, the charging and discharging time can be shortened. In addition, it is possible to drive a high-definition liquid crystal display device of 1280 × 1024 dots or more and a large screen liquid crystal display device of 20 inches or more, which requires higher resistance, shorter charge and discharge than the liquid crystal display device of the present invention, and divides the voltage by using a resistor. In the circuit, it is not necessary to lower the resistance value, so that the increase in power consumption can be minimized, and a high precision output can be obtained. Further, the output voltage width can be equal to the power supply voltage width, and the magnitude of the output rope set voltage can be controlled by the potential difference between two other voltages selected by the selection means.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명의 1실시예의 192출력의 X 구동회로의 간단한 블럭도,1 is a simple block diagram of an X driving circuit of 192 outputs according to an embodiment of the present invention;
제2도는 본 발명의 1실시예의 분압회로의 간단한 블럭도,2 is a simple block diagram of a voltage dividing circuit of one embodiment of the present invention;
제3도는 본 발명의 1실시예의 출력파형도,3 is an output waveform diagram of an embodiment of the present invention;
제4도는 본 발명의 1실시예의 192출력의 X 구동회로의 간단한 블럭도,4 is a simple block diagram of an X driving circuit of 192 outputs according to an embodiment of the present invention;
제5도는 본 발명 1실시예의 192출력의 X 구동회로의 간단한 블럭도,5 is a simple block diagram of an X driving circuit of 192 outputs according to the first embodiment of the present invention;
제6도는 본 발명의 1실시예의 192출력의 X 구동회로의 간단한 블럭도.6 is a simple block diagram of an X driving circuit of 192 outputs in one embodiment of the present invention.
Claims (20)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP92-268908 | 1992-10-07 | ||
JP26890892 | 1992-10-07 | ||
JP93-268908 | 1993-10-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR940009730A true KR940009730A (en) | 1994-05-24 |
KR0128046B1 KR0128046B1 (en) | 1998-04-21 |
Family
ID=17464943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930020719A KR0128046B1 (en) | 1992-10-07 | 1993-10-07 | Lcd |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR0128046B1 (en) |
TW (1) | TW238376B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100430863B1 (en) * | 2000-08-10 | 2004-05-10 | 샤프 가부시키가이샤 | Signal line drive circuit, image display device, and portable apparatus |
KR100805401B1 (en) * | 2000-04-14 | 2008-02-20 | 엔엑스피 비 브이 | Display driver with double calibration means |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI567718B (en) * | 2010-11-25 | 2017-01-21 | 廖文裕 | Lcd driver and display device |
TWI486932B (en) * | 2013-04-03 | 2015-06-01 | Himax Tech Inc | Panel driving circuit |
-
1993
- 1993-10-06 TW TW082108257A patent/TW238376B/en not_active IP Right Cessation
- 1993-10-07 KR KR1019930020719A patent/KR0128046B1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100805401B1 (en) * | 2000-04-14 | 2008-02-20 | 엔엑스피 비 브이 | Display driver with double calibration means |
KR100430863B1 (en) * | 2000-08-10 | 2004-05-10 | 샤프 가부시키가이샤 | Signal line drive circuit, image display device, and portable apparatus |
Also Published As
Publication number | Publication date |
---|---|
TW238376B (en) | 1995-01-11 |
KR0128046B1 (en) | 1998-04-21 |
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