JPH044477U

JPH044477U -

Info

Publication number: JPH044477U
Application number: JP4408090U
Authority: JP
Priority date: 1990-04-26
Filing date: 1990-04-26
Publication date: 1992-01-16

Description

[Brief explanation of the drawing]

第１図は本考案に係る液晶パネル駆動装置の一
実施例を示すブロツク図、第２図は第１図中の主
要部における信号波形を模式的に示す図、第３図
は走査線補間回路の一例を示すブロツク図、第４
図は液晶パネルおよび水平ドライバ回路を示すブ
ロツク図である。１……Ａ／Ｄ変換回路、３……動き検出回路、
５……走査線補間回路、１３，１５……２相展開
回路、１７〜２３……分割回路（時間軸変換回路
）、２５〜３１……切換回路、３３〜３９……Ｄ
／Ａ変換回路、４１……液晶パネル、４３……垂
直ドライバ回路、４５，４７……水平ドライバ回
路、４５ａ，４５ｂ……水平ドライバ回路、４７
ａ，４７ｂ……水平ドライバ回路。 Fig. 1 is a block diagram showing an embodiment of a liquid crystal panel driving device according to the present invention, Fig. 2 is a diagram schematically showing signal waveforms in the main parts in Fig. 1, and Fig. 3 is a scanning line interpolation circuit. Block diagram showing an example of
The figure is a block diagram showing a liquid crystal panel and horizontal driver circuit. 1...A/D conversion circuit, 3...Motion detection circuit,
5...Scanning line interpolation circuit, 13, 15...Two-phase expansion circuit, 17-23...Dividing circuit (time axis conversion circuit), 25-31...Switching circuit, 33-39...D
/A conversion circuit, 41...Liquid crystal panel, 43...Vertical driver circuit, 45, 47...Horizontal driver circuit, 45a, 45b...Horizontal driver circuit, 47
a, 47b...Horizontal driver circuit.

Claims

[Claims for Utility Model Registration] (1) An A/D conversion circuit that converts an analog primary color signal into a digital signal; a scanning line interpolation circuit that outputs a current signal and an interpolation signal; a two-phase expansion circuit that expands each of the current signal and interpolation signal into two phases to reduce the occupied frequency band to 1/2; are horizontal drive circuits arranged above and below an active matrix liquid crystal panel having 2N-1 (N=1, even integer) pixels and sequentially scan this liquid crystal panel.
2,...M/2) are assigned and driven by one two-phase expansion signal from the two-phase expansion circuit, and the other is assigned a pixel denoted 2N and driven by the other two-phase expansion signal. A liquid crystal panel driving device characterized by comprising: upper and lower horizontal drive circuits driven by; (2) A dividing circuit is provided that divides one horizontal scanning time into K pieces for each two-phase expanded signal from the two-phase expanded circuit, and the upper and lower horizontal drive circuits divide each of the divided two-phase expanded signals into K pieces. 2. The liquid crystal panel driving device according to claim 1, wherein the liquid crystal panel driving device is divided into K parts so as to be driven in accordance with the above. (3) The liquid crystal panel driving device according to claim 2, wherein the dividing circuit has a time axis conversion function for extending the time axis of each of the divided two-phase expansion signals. (4) The liquid crystal panel driving device according to claim 3, wherein the dividing circuit expands each divided two-phase expansion signal into one horizontal scanning time.