JPS6381475U - - Google Patents
Info
- Publication number
- JPS6381475U JPS6381475U JP17334286U JP17334286U JPS6381475U JP S6381475 U JPS6381475 U JP S6381475U JP 17334286 U JP17334286 U JP 17334286U JP 17334286 U JP17334286 U JP 17334286U JP S6381475 U JPS6381475 U JP S6381475U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- circuits
- crystal display
- conversion circuits
- output data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal Display Device Control (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
第１図は本考案の一実施例による液晶表示装置
のＡ／Ｄ変換ブロツク部分の回路構成を示すブロ
ツク図、第２図は同実施例の動作を説明するため
のタイミングチヤート、第３図は従来の液晶表示
装置の概略構成を示すブロツク図、第４図は第３
図におけるＡ／Ｄ変換ブロツク部分の詳細を示す
回路構成図、第５図は第４図の動作を説明するた
めのタイミングチヤートである。
１……Ａ／Ｄ変換ブロツク、２ａ，２ｂ……表
示駆動回路、３……液晶表示パネル、２１ａ，２
１ｂ……Ａ／Ｄ変換部、２２ａ，２２ｂ……コン
パレータ部、２３ａ，２３ｂ……エンコーダ、２
４……基準電圧発生部、２５ａ，２５ｂ，２６ａ
，２６ｂ……ラツチ回路、２７ａ，２７ｂ，２８
ａ，２８ｂ……クロツクドバツフア、３１……タ
イミング信号発生部、３２……１／２分周器。
FIG. 1 is a block diagram showing the circuit configuration of the A/D conversion block portion of a liquid crystal display device according to an embodiment of the present invention, FIG. 2 is a timing chart for explaining the operation of the embodiment, and FIG. A block diagram showing the schematic configuration of a conventional liquid crystal display device, FIG.
FIG. 5 is a circuit configuration diagram showing details of the A/D conversion block portion in the figure, and FIG. 5 is a timing chart for explaining the operation of FIG. 4. 1... A/D conversion block, 2a, 2b... Display drive circuit, 3... Liquid crystal display panel, 21a, 2
1b...A/D conversion section, 22a, 22b...Comparator section, 23a, 23b...Encoder, 2
4...Reference voltage generation section, 25a, 25b, 26a
, 26b...Latch circuit, 27a, 27b, 28
a, 28b...clocked buffer, 31...timing signal generator, 32...1/2 frequency divider.
Claims (1)
クロツクによりＡ／Ｄ変換する複数のＡ／Ｄ変換
回路と、上記各サンプリングクロツクの位相を１
水平期間毎に切換える手段と、上記複数のＡ／Ｄ
変換回路の出力データに基づき液晶表示パネルの
セグメント電極を駆動する複数の表示駆動回路と
、上記複数のＡ／Ｄ変換回路の出力データを１水
平期間毎に切換えて上記各表示駆動回路に入力す
る手段とを具備したことを特徴とする液晶表示装
置。 A plurality of A/D conversion circuits that A/D convert video signals using sampling clocks having different phases;
means for switching every horizontal period; and the plurality of A/Ds.
A plurality of display drive circuits drive segment electrodes of a liquid crystal display panel based on output data of the conversion circuits, and output data of the plurality of A/D conversion circuits is switched every horizontal period and input to each of the display drive circuits. A liquid crystal display device comprising: means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986173342U JPH071622Y2 (en) | 1986-11-13 | 1986-11-13 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986173342U JPH071622Y2 (en) | 1986-11-13 | 1986-11-13 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6381475U true JPS6381475U (en) | 1988-05-28 |
| JPH071622Y2 JPH071622Y2 (en) | 1995-01-18 |
Family
ID=31110713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986173342U Expired - Lifetime JPH071622Y2 (en) | 1986-11-13 | 1986-11-13 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071622Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61112188A (en) * | 1984-11-06 | 1986-05-30 | キヤノン株式会社 | Image display unit |
-
1986
- 1986-11-13 JP JP1986173342U patent/JPH071622Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61112188A (en) * | 1984-11-06 | 1986-05-30 | キヤノン株式会社 | Image display unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071622Y2 (en) | 1995-01-18 |
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