JPS63142970U - - Google Patents
Info
- Publication number
- JPS63142970U JPS63142970U JP3492387U JP3492387U JPS63142970U JP S63142970 U JPS63142970 U JP S63142970U JP 3492387 U JP3492387 U JP 3492387U JP 3492387 U JP3492387 U JP 3492387U JP S63142970 U JPS63142970 U JP S63142970U
- Authority
- JP
- Japan
- Prior art keywords
- data driver
- driver integrated
- integrated circuits
- circuit
- video signal
- 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.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
第１図はこの考案の実施例のブロツク図、第２
図は同じく実施例の具体的な回路図、第３図は従
来における液晶表示装置に発生した明るさの不揃
い画面を示す模擬画面構成図である。
１……ビデオ出力集積回路、２……液晶表示装
置、３，５……データドライバ集積回路、４……
ＤＣレベルシフト回路。
Figure 1 is a block diagram of an embodiment of this invention;
The same figure is a specific circuit diagram of the embodiment, and FIG. 3 is a simulated screen configuration diagram showing a screen with uneven brightness that occurs in a conventional liquid crystal display device. 1... Video output integrated circuit, 2... Liquid crystal display device, 3, 5... Data driver integrated circuit, 4...
DC level shift circuit.
Claims (1)
ータドライバ集積回路と、そのそれぞれのデータ
ドライバ集積回路にビデオ信号を出力する１個の
ビデオ出力集積回路とからなる液晶表示装置の駆
動回路に設けられる閾値電圧調整回路であつて、
任意の１つのデータドライバ集積回路に入力され
るビデオ信号の直流電圧レベルを基準とした際に
、残るデータドライバ集積回路に、そのそれぞれ
のデータドライバ集積回路の有する閾値電圧に対
応するよう、上記ビデオ信号の直流電圧レベルを
調整するＤＣレベルシフト回路を設けたことを特
徴とする閾値電圧調整回路。 A threshold voltage provided in a drive circuit for a liquid crystal display device, which is composed of at least two data driver integrated circuits that drive the liquid crystal display device and one video output integrated circuit that outputs a video signal to each of the data driver integrated circuits. An adjustment circuit,
When the DC voltage level of the video signal input to any one data driver integrated circuit is used as a reference, the remaining data driver integrated circuits are set such that the voltage level of the video signal input to the remaining data driver integrated circuits corresponds to the threshold voltage of each of the data driver integrated circuits. A threshold voltage adjustment circuit comprising a DC level shift circuit that adjusts a DC voltage level of a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3492387U JPS63142970U (en) | 1987-03-10 | 1987-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3492387U JPS63142970U (en) | 1987-03-10 | 1987-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63142970U true JPS63142970U (en) | 1988-09-20 |
Family
ID=30843932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3492387U Pending JPS63142970U (en) | 1987-03-10 | 1987-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63142970U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61219023A (en) * | 1985-03-23 | 1986-09-29 | Sharp Corp | Liquid-crystal display device |
-
1987
- 1987-03-10 JP JP3492387U patent/JPS63142970U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61219023A (en) * | 1985-03-23 | 1986-09-29 | Sharp Corp | Liquid-crystal display device |
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