JPH0324784U

JPH0324784U -

Info

Publication number: JPH0324784U
Application number: JP8353589U
Authority: JP
Priority date: 1989-07-18
Filing date: 1989-07-18
Publication date: 1991-03-14

Description

[Brief explanation of drawings]

第１図は本考案の画面拡大液晶テレビに適用さ
れる飛び越し変更水平周期制御パルス列の形成回
路を示し、第２図はパルス列の形成方法と各パル
ス列のタイミングの関係を示し、第３図は液晶テ
レビのパネルとドライバの相互要部関係を示す。１……クロツクパルス列、１′……タイミング
をずらしたクロツクパルス列、１′′……スター
トパルス、２……飛び越し機能付きパルス列、３
……スイツチング制御パルス列、４……飛び越し
変更水平周期制御パルス列、４′……タイミング
をずらした飛び越し変更水平周期制御パルス列、
５……デイレイ回路、６……分周器、７……ＯＲ
回路、８……スイツチング、９……パネル、１０
……ゲート・ドライバ、１１……ソース・ドライ
バ。 Fig. 1 shows a circuit for forming an interlaced change horizontal periodic control pulse train applied to the enlarged screen LCD television of the present invention, Fig. 2 shows the relationship between the pulse train forming method and the timing of each pulse train, and Fig. 3 shows the relationship between the pulse train forming method and the timing of each pulse train. The relationship between the main parts of the TV panel and driver is shown. 1... Clock pulse train, 1'... Clock pulse train with shifted timing, 1''... Start pulse, 2... Pulse train with skip function, 3
... Switching control pulse train, 4 ... Interlaced change horizontal periodic control pulse train, 4' ... Interlaced change horizontal periodic control pulse train with shifted timing,
5...Delay circuit, 6...Frequency divider, 7...OR
Circuit, 8... Switching, 9... Panel, 10
...Gate driver, 11...Source driver.

Claims

[Scope of utility model registration request]

In LCD televisions that display images by scanning by adding one pulse to 1H every horizontal period,
A clock pulse 1 which provides a horizontal period H to a gate driver 10 which inputs a control signal with a horizontal period H to the panel 9 is ORed with a second clock pulse 1' which is given a time difference through a delay circuit 5.
A circuit 7 generates a combined pulse train 2 with an interlace function, and the clock pulse 1 is then passed through a frequency divider 6.
The switch 8, which functions in response to the input of the switching control pulse train 3 formed by The interlacing change horizontal periodic control pulse train 4 performs interlacing control of the scanning lines along the screen, while in the next period of the screen, the interlacing changing horizontal periodic control pulse train 4' shifted by 0.5H is given to the driver 10, and in the previous period A screen enlarged liquid crystal television characterized in that the screen of the liquid crystal television is enlarged to an arbitrary size by sequentially controlling the horizontal period of skipped gates.