JPH04250415A - Manufacture of liquid crystal display device - Google Patents
Manufacture of liquid crystal display deviceInfo
- Publication number
- JPH04250415A JPH04250415A JP3008261A JP826191A JPH04250415A JP H04250415 A JPH04250415 A JP H04250415A JP 3008261 A JP3008261 A JP 3008261A JP 826191 A JP826191 A JP 826191A JP H04250415 A JPH04250415 A JP H04250415A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- ics
- display
- substrate
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 238000009966 trimming Methods 0.000 claims description 6
- 230000007547 defect Effects 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は液晶表示装置の製造方法
に関し、特に信号駆動用基板の接続及び調整に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a liquid crystal display device, and more particularly to connection and adjustment of a signal driving substrate.
【０００２】0002
【従来の技術】従来、液晶表示装置の製造方法は、液晶
表示基板に特性のそろったＩＣを搭載した水平信号駆動
用基板と垂直信号駆動用基板を接続したり、または、液
晶表示基板上に信号駆動用ＩＣを搭載し、液晶表示基板
とＩＣの接続を行ない、ＩＣをモールド封止したのち、
液晶表示装置の光学的検査を行ない、良否の判定を行う
のが通例である。[Prior Art] Conventionally, a method for manufacturing a liquid crystal display device involves connecting a horizontal signal driving substrate and a vertical signal driving substrate on which ICs with uniform characteristics are mounted on a liquid crystal display substrate, or After mounting the signal drive IC, connecting the LCD display board and the IC, and sealing the IC with a mold,
It is customary to optically inspect a liquid crystal display device to determine whether it is good or bad.
【０００３】0003
【発明が解決しようとする課題】上述した従来の液晶表
示装置の製造方法では、信号駆動用基板等に同種の信号
駆動用ＩＣを複数個並列にして使うため、チップ内での
特性がそろっているＩＣは入手しやすいが、多数個のチ
ップの特性がそろっているＩＣの入手が難しく、その結
果、特性のそろっていないＩＣを使用した場合、液晶表
示装置の光学的特性としては隣のＩＣが受け持つ表示領
域との境界でコントラストの差となって現われ、不具合
が生じるという欠点がある。[Problems to be Solved by the Invention] In the conventional method of manufacturing a liquid crystal display device described above, a plurality of signal driving ICs of the same type are used in parallel on a signal driving substrate, etc., so that the characteristics within the chip are uniform. It is easy to obtain ICs with similar characteristics, but it is difficult to obtain ICs with many chips that have the same characteristics.As a result, when ICs with uneven characteristics are used, the optical characteristics of the liquid crystal display device will differ from those of the adjacent IC. This has the disadvantage that a difference in contrast appears at the boundary with the display area that is in charge of the display area, causing problems.
【０００４】0004
【課題を解決するための手段】本発明の液晶表示装置の
製造方法は、液晶表示基板に信号駆動用基板を接続する
工程と、液晶表示装置の表示特性を検査する工程と、こ
の表示特性検査結果により信号駆動用基板上のＩＣの抵
抗をレーザ光によりトリミングし、ＩＣの出力電圧を補
正する工程とを有している。[Means for Solving the Problems] A method for manufacturing a liquid crystal display device of the present invention includes a step of connecting a signal driving substrate to a liquid crystal display substrate, a step of inspecting display characteristics of the liquid crystal display device, and a step of inspecting the display characteristics. According to the result, the resistance of the IC on the signal driving substrate is trimmed with a laser beam, and the output voltage of the IC is corrected.
【０００５】[0005]
【実施例】次に、本発明について図面を参照して説明す
る。図１は本発明の一実施例で、ＩＣの特性トリミング
前の表示状態を示す図であり、水平側駆動用ＩＣ１１〜
１６の特性の差により、ＩＣ１１〜１６が受け持つ表示
領域２１〜２６の境界でコントラスト差のため目に見え
るライン欠陥３１〜３５が生じる。図２は、ＩＣの特性
トリミング後の表示状態を示す図で、水平側駆動用ＩＣ
１１〜１６の間に特性の差がないため、ＩＣ１１〜１６
の受け持つ表示領域２１〜２６の境界でコントラスト差
がなくなり、目に見えないライン欠陥４１〜４５となっ
ている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings. FIG. 1 is an embodiment of the present invention, and is a diagram showing the display state before the characteristics of the IC are trimmed.
Due to the difference in the characteristics of the ICs 11-16, visible line defects 31-35 occur due to contrast differences at the boundaries of the display areas 21-26 handled by the ICs 11-16. FIG. 2 is a diagram showing the display state after the characteristics of the IC have been trimmed.
Since there is no difference in characteristics between 11 and 16, IC11 to 16
The contrast difference disappears at the boundaries between the display areas 21 to 26 which are in charge of the display areas 21 to 26, resulting in invisible line defects 41 to 45.
【０００６】次に本発明の一実施例について説明する。
まず、モールド封止されていない駆動用ＩＣ１１〜１６
を搭載した水平側駆動回路基板２を液晶表示基板１に接
続し、表示特性の光学的検査を行なう。次にこの検査結
果に基づいて、ＩＣ１１〜１６内の抵抗をレーザ光によ
りトリミングを行い、ＩＣ１１〜１６の出力電圧を調整
する。次に、表示特性の光学的検査を行い、トリミング
結果を確認する。次にＩＣ１１〜１６をモールド封止す
る。Next, one embodiment of the present invention will be described. First, drive ICs 11 to 16 that are not molded.
The horizontal drive circuit board 2 mounted with the horizontal drive circuit board 2 is connected to the liquid crystal display board 1, and the display characteristics are optically inspected. Next, based on this test result, the resistors in the ICs 11 to 16 are trimmed using a laser beam, and the output voltages of the ICs 11 to 16 are adjusted. Next, the display characteristics are optically inspected and the trimming results are confirmed. Next, the ICs 11 to 16 are molded and sealed.
【０００７】第２の実施例として、信号駆動用ＩＣを液
晶表示基板上に搭載し、ワイヤボンディングにより電極
間を接続する。次に第１の実施例と同様に、レーザ光に
よりトリミングを行い、ＩＣをモールド封止する。As a second embodiment, a signal driving IC is mounted on a liquid crystal display substrate, and the electrodes are connected by wire bonding. Next, as in the first embodiment, trimming is performed using a laser beam, and the IC is molded and sealed.
【０００８】第３の実施例として、信号駆動用ＩＣをバ
ンプにより液晶表示基板上に搭載し接続した場合は、液
晶表示基板の裏側よりレーザ光を照射し、ＩＣをトリミ
ングしたのちＩＣをモールド封止する。As a third embodiment, when a signal driving IC is mounted and connected to a liquid crystal display substrate using bumps, a laser beam is irradiated from the back side of the liquid crystal display substrate, the IC is trimmed, and then the IC is molded and sealed. Stop.
【０００９】[0009]
【発明の効果】以上説明したように、本発明は、液晶特
性検査の結果に基づいて信号駆動用ＩＣをトリミングす
ることにより信号駆動用ＩＣの出力電圧の差による表示
特性の悪化を完全に補正できる効果がある。また、信号
駆動用ＩＣの特性に差がなく液晶表示基板そのものに特
性差がある場合においても上記方法により表示特性を補
正できることは言うまでもない。As explained above, the present invention completely corrects the deterioration in display characteristics due to the difference in output voltage of the signal driving IC by trimming the signal driving IC based on the results of a liquid crystal characteristic test. There is an effect that can be done. Furthermore, it goes without saying that even if there is no difference in the characteristics of the signal driving ICs but there is a difference in the characteristics of the liquid crystal display substrate itself, the display characteristics can be corrected by the above method.
【図１】本発明の一実施例の駆動用ＩＣのトリミング前
の表示状態を示す図である。FIG. 1 is a diagram showing a display state of a driving IC according to an embodiment of the present invention before trimming.
【図２】本発明による駆動用ＩＣのトリミング後の表示
状態を示す図である。FIG. 2 is a diagram showing a display state of the driving IC after trimming according to the present invention.
１ 液晶表示基板
２ 水平側駆動回路基板
１１〜１６ 駆動用ＩＣ
２１〜２６ 表示領域
３１〜３５ コントラスト差により目に見えるラ
イン欠陥
４１〜４５ コントラスト差により目に見えない
ライン欠陥1 Liquid crystal display substrate 2 Horizontal drive circuit board 11-16 Drive IC 21-26 Display area 31-35 Line defects 41-45 visible due to contrast difference Line defects invisible due to contrast difference
Claims (1)
する工程と、液晶表示装置の表示特性を検査する工程と
、信号駆動用基板をトリミングする工程とを含むことを
特徴とする液晶表示装置の製造方法。1. A liquid crystal display device comprising the steps of: connecting a signal driving substrate to a liquid crystal display substrate; inspecting display characteristics of the liquid crystal display; and trimming the signal driving substrate. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3008261A JP2903725B2 (en) | 1991-01-28 | 1991-01-28 | Manufacturing method of liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3008261A JP2903725B2 (en) | 1991-01-28 | 1991-01-28 | Manufacturing method of liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04250415A true JPH04250415A (en) | 1992-09-07 |
| JP2903725B2 JP2903725B2 (en) | 1999-06-14 |
Family
ID=11688208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3008261A Expired - Lifetime JP2903725B2 (en) | 1991-01-28 | 1991-01-28 | Manufacturing method of liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2903725B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002088835A1 (en) * | 2001-05-01 | 2002-11-07 | Three-Five Systems, Inc. | Liquid crystal display device with alterable contrast and method for altering contrast during assembly of such a liquid crystal display device |
| EP1420285A2 (en) * | 1997-04-21 | 2004-05-19 | Seiko Epson Corporation | Liquid crystal display device, method of manufacturing the same and electronic equipment |
-
1991
- 1991-01-28 JP JP3008261A patent/JP2903725B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420285A2 (en) * | 1997-04-21 | 2004-05-19 | Seiko Epson Corporation | Liquid crystal display device, method of manufacturing the same and electronic equipment |
| EP1420285A3 (en) * | 1997-04-21 | 2004-07-14 | Seiko Epson Corporation | Liquid crystal display device, method of manufacturing the same and electronic equipment |
| US6954249B2 (en) | 1997-04-21 | 2005-10-11 | Seiko Epson Corporation | Liquid crystal display device, method of manufacturing the same, and electronic equipment |
| WO2002088835A1 (en) * | 2001-05-01 | 2002-11-07 | Three-Five Systems, Inc. | Liquid crystal display device with alterable contrast and method for altering contrast during assembly of such a liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2903725B2 (en) | 1999-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5377030A (en) | Method for testing active matrix liquid crystal by measuring voltage due to charge in a supplemental capacitor | |
| JP2005191387A (en) | Method and device for testing image pickup element | |
| KR20030051923A (en) | Liquid crystal panel for testing signal line of line on glass type | |
| US20040124868A1 (en) | Bump structure for testing liquid crystal display panel and method of fabricating the same | |
| JPH04250415A (en) | Manufacture of liquid crystal display device | |
| JP2004037232A (en) | Height measuring method | |
| TWI396883B (en) | Liquid crystal display test module and liquid crystal display defect analyzing method | |
| JP3210234B2 (en) | Liquid crystal display panel manufacturing method | |
| US20030112331A1 (en) | Positioning and inspecting system and method using same | |
| KR100952386B1 (en) | Method for connecting liquid crystal display module | |
| JPH05333370A (en) | Active matrix type liquid crystal display element | |
| US6458608B1 (en) | Alignment check method on printed circuit board | |
| JP3235618B2 (en) | Liquid crystal display panel manufacturing method | |
| JP2506807B2 (en) | Manufacturing method of active matrix array | |
| JP3479170B2 (en) | LCD drive board inspection method | |
| JPH10268273A (en) | Liquid crystal display substrate | |
| US12038657B2 (en) | Liquid crystal panel and method for manufacturing liquid crystal display device | |
| JP2506847B2 (en) | Method for manufacturing reflective active matrix array | |
| JPH021890A (en) | Method for testing active matrix substrate for display panel | |
| JP2006267787A (en) | Display panel and its manufacturing method | |
| JPH1124594A (en) | Inspecting method for liquid crystal display device | |
| JP2502699B2 (en) | Liquid crystal display panel manufacturing method | |
| JP2008175987A (en) | Array substrate, and methods of inspecting array substrate and liquid crystal panel | |
| JP2909280B2 (en) | Liquid crystal display device | |
| KR101232158B1 (en) | The test process for Liquid Crystal Display Device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990223 |