公开(公告)号：JPH05313185A

公开(公告)日：1993-11-26

申请号：JP10314492

申请日：1992-04-22

Applicant: IBM

Inventor： FUKUNAGA TETSUYA ,  KOSEKI TOSHIHIKO ,  TAKANO HIDEO ,  YAMANAKA SHUHO

IPC: G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/136 ,  G02F1/1368 ,  H01L21/336 ,  H01L27/12 ,  H01L29/78 ,  H01L29/786 ,  H01L29/784

Abstract: PURPOSE: To improve the quality of a display image deteriorated by a reverse tilt by constituting a light shielding layer formed on the edge of an aperture arranged on the upstream of a rubbing direction of a specific thin light shielding layer and a specific thick light shielding layer. CONSTITUTION: A light shielding layer on the edge of a display area on the upstream of the rubbing direction is formed on the peripheral edge of a display electrode 3 and constituted of a thin light shielding layer 5 for restricting the edge 6 of an aperture and a thick black photoresist layer, i.e., a black photosensitive organic material layer 4 positioning its edge 7 on the layer 5. An edge 6 is separated from the edge 7 by a distance L and the layer 5 should be formed on the edge of the aperture existing on the upstream of the rubbing direction in order to solve a reverse tilt. Since it is preferable that all liquid crystal display cells have the same numerical aperture, the formation of a thin light shielding layer 5 on the downstream of the rubbing direction is also preferable. The numerical aperture means the rate of a light passing area to the edge area of the liquid crystal display cell.

公开(公告)号：JPH05119213A

公开(公告)日：1993-05-18

申请号：JP22615091

申请日：1991-09-05

Applicant: IBM ,  FUJI PHOTO FILM CO LTD

Inventor： FUKUNAGA TETSUYA ,  KOSEKI TOSHIHIKO ,  UEKI TOSHIHIRO ,  YAMANAKA SHUHO ,  KOBAYASHI KESANAO

IPC: G02B5/20 ,  G02B5/22 ,  G02F1/1335

Abstract: PURPOSE: To manufacture a color filter that is provided with general performance as a color filter and enables a high contrast display by using a reaction product of a binder polymer and a reactive dye with each other as a component of the color filter. CONSTITUTION: This color filter has at least one color layer formed from a photosensitive composition contg. a reaction product of a binder polymer and a reactive dye with each other. The binder polymer is a linear organic polymer which contains functional groups such as hydrogen radicals or amino or amide groups in its side chains in an amount sufficient to subject the reactive dye to addition reaction with the binder and is compatible with its monomer (s). For example, a homopolymer or copolymer of hydroxyethyl acrylate, aminoethyl acrylate or acrylamide, or a partially esterified compound of an acid anhydride polymer such as maleic anhydride copolymer or itaconic anhydride copolymer with glycol or aminoglycol, or the like, is useful as this binder polymer. The color filter is most appropriately used for a TFF-LCD (thin film transistor liquid crystal device) which is particularly required to provide a high contrast display and has a gradation display function.

公开(公告)号：JPH03296701A

公开(公告)日：1991-12-27

申请号：JP9664990

申请日：1990-04-13

Applicant: IBM

Inventor： FUKUNAGA TETSUYA ,  IKEDA AYUMI ,  UEKI TOSHIHIRO

IPC: G02B5/20 ,  G02F1/1335 ,  G03F1/00 ,  G03F1/72 ,  G03F7/00

Abstract: PURPOSE: To avert recognition as a defect by packing a negative type photosensitive resin contg. pigments of the same color into the defective part of colored pixels. CONSTITUTION: A black matrix 2 is formed of chromium on a transparent substrate 4 and, thereafter, the pigments of red, green and blue are successively applied thereon to form color filters by exposing, developing and post baking stages. CRY is again applied on the colored pixels by spin coating in order to repair the defect 3 of a red image 1R generated at this time and is developed by a prescribed developer after exposure 6. In such a case, only the photosensitive resin of the defective part is polymerized under a exposure energy condition and a material 5 for repair may be packed into the defective part 3. ITO transparent electrodes are thereafter formed by sputtering and the transparent substrate is combined with a TFT substrate, by which a liquid crystal is assembled. The negative type photosensitive resin of the same color is packed in the defective part if the defects is single color and the resin of gray is packed therein when the defect is several colors, by which the display is improved.

公开(公告)号：JPH04172304A

公开(公告)日：1992-06-19

申请号：JP29998790

申请日：1990-11-07

Applicant: IBM

Inventor： FUKUNAGA TETSUYA ,  UEKI TOSHIHIRO

IPC: G02B5/20 ,  G02F1/1335 ,  G03F7/00 ,  G03F7/40

Abstract: PURPOSE: To enable a high-contrast display without the occurrence of light leakage and further, to make the formation of color filters having excellent positional accuracy in arbitrary color arrangement by previously forming an insulative black matrix on a transparent conductive film and utilizing this black matrix as a mask near the parts where electrodeposited color filters are formed. CONSTITUTION: The black matrix 13 is formed of the insulative material on the glass substrate 10 formed with the transparent electrodes and after a positive type photosensitive resin 14 is applied thereon, this resin is exposed through the photomask 15 having the light transparent parts wider than the apertures of the matrix 13. After the exposed photoresist is removed by development processing, the color filters 16 of the first color are formed by an electrodeposition method. More preferably, the positive resist of the position where the color filters 17 of the adjacent second color are to be formed is similarly exposed and developed and thereafter, the color filters 17 of the second color are formed and similarly, the color filters 18 of the third color are formed. As a result, the color filters which obviate the leakage of light, have excellent alignment accuracy, have high quality and are inexpensive are obtd.

公开(公告)号：CA2094522A1

公开(公告)日：1993-10-23

申请号：CA2094522

申请日：1993-04-21

Applicant: IBM

Inventor： KOSEKI TOSHIHIKO ,  FUKUNAGA TETSUYA ,  TAKANO HIDEO ,  YAMANAKA HIDEMINE

IPC: G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/136 ,  G02F1/1368 ,  H01L21/336 ,  H01L27/12 ,  H01L29/78 ,  H01L29/786 ,  G02F1/133

Abstract: JA9-91-044 LIQUID CRYSTAL DISPLAY DEVICE A liquid crystal display device includes a first transparent insulating substrate having a common electrode. A second transparent insulating substrate has gate lines formed in one direction and intersecting data lines in the other direction. Liquid crystal display cells are formed at each cross-point of the gate and data lines and include thin film transistors and display electrodes; a light shielding layer includes an aperture for exposing a display area of each display electrode and liquid crystal material retained between the first and second substrates. The device is characterized in that the light shielding layer of edge of the aperture located at the upper stream of a rubbing direction comprises a thin light shielding layer formed at the periphery of the display electrode for defining edge of the aperture and, a thick light shielding layerhaving an edge positioned on the thin light shielding layer. The present invention improves the quality of a displayed image of a liquid crystal display device which has been degraded by a reverse tilt.

公开(公告)号：DE69114170T2

公开(公告)日：1996-05-30

申请号：DE69114170

申请日：1991-04-03

Applicant: IBM

Inventor： FUKUNAGA TETSUYA ,  IKEDA AYUMI ,  UEKI TOSHIHIRO

IPC: G02B5/20 ,  G02F1/1335 ,  G03F1/00 ,  G03F1/72 ,  G03F7/00 ,  G03F7/12

Abstract: A method is provided for correcting defects in colour filters containing coloured pixels. The method comprises: applying a negative type photosensitive resin, in which a pigment is dispersed, to the colour pixels that have defects; exposing the photosensitive resin to light through the coloured pixels having the defect; and developing the exposed photosensitive resin. If the defects occur in just one colour of pixel then the pigment dispersed in the resin is of that particular colour. However, if the defects spread over several pixels of different colours then a grey pigment is dispersed in the resin.

公开(公告)号：DE69215303T2

公开(公告)日：1997-04-30

申请号：DE69215303

申请日：1992-09-02

Applicant: IBM ,  FUJI PHOTO FILM CO LTD

Inventor： FUKUNAGA TETSUYA ,  KOSEKI TOSHIHIKO ,  UEKI TOSHIHIRO ,  YAMANAKA HIDEMINE ,  KOBAYASHI KESANAO

IPC: G02B5/20 ,  G02B5/22 ,  G02F1/1335

Abstract: The present invention relates to a colour filter comprising a light filtering substance. According to the invention the colour filter is characterised in that the light filtering substance comprises the result of the reaction of a binder polymer with a reactive dye. According to a preferred embodiment of the invention the colour filter is characterised in that the light filtering substance also comprises an organic pigment. The invention also relates to a method of manufacturing a colour filter as above comprising forming a light filtering substance on a substrate. According to the invention the method of manufacturing is characterised by the steps of depositing a solution of a binder polymer and a reactive dye on the substrate and heating the deposited solution so that the binder reacts with and bonds with the reactive dye thereby forming the light filtering substance.

公开(公告)号：DE69215303D1

公开(公告)日：1997-01-02

申请号：DE69215303

申请日：1992-09-02

Applicant: IBM ,  FUJI PHOTO FILM CO LTD

Inventor： FUKUNAGA TETSUYA ,  KOSEKI TOSHIHIKO ,  UEKI TOSHIHIRO ,  YAMANAKA HIDEMINE ,  KOBAYASHI KESANAO

IPC: G02B5/20 ,  G02B5/22 ,  G02F1/1335

Abstract: The present invention relates to a colour filter comprising a light filtering substance. According to the invention the colour filter is characterised in that the light filtering substance comprises the result of the reaction of a binder polymer with a reactive dye. According to a preferred embodiment of the invention the colour filter is characterised in that the light filtering substance also comprises an organic pigment. The invention also relates to a method of manufacturing a colour filter as above comprising forming a light filtering substance on a substrate. According to the invention the method of manufacturing is characterised by the steps of depositing a solution of a binder polymer and a reactive dye on the substrate and heating the deposited solution so that the binder reacts with and bonds with the reactive dye thereby forming the light filtering substance.

公开(公告)号：DE69114170D1

公开(公告)日：1995-12-07

申请号：DE69114170

申请日：1991-04-03

Applicant: IBM

Inventor： FUKUNAGA TETSUYA ,  IKEDA AYUMI ,  UEKI TOSHIHIRO

IPC: G02B5/20 ,  G02F1/1335 ,  G03F1/00 ,  G03F1/72 ,  G03F7/00 ,  G03F7/12

Abstract: A method is provided for correcting defects in colour filters containing coloured pixels. The method comprises: applying a negative type photosensitive resin, in which a pigment is dispersed, to the colour pixels that have defects; exposing the photosensitive resin to light through the coloured pixels having the defect; and developing the exposed photosensitive resin. If the defects occur in just one colour of pixel then the pigment dispersed in the resin is of that particular colour. However, if the defects spread over several pixels of different colours then a grey pigment is dispersed in the resin.

公开(公告)号：CA2040306A1

公开(公告)日：1991-10-14

申请号：CA2040306

申请日：1991-04-12

Applicant: IBM

Inventor： FUKUNAGA TETSUYA ,  IKEDA AYUMI ,  UEKI TOSHIHIRO

IPC: G02B5/20 ,  G02F1/1335 ,  G03F1/00 ,  G03F1/72 ,  G03F7/00 ,  G02F1/133 ,  G03C5/56

Abstract: The disclosure deals with color filters used in liquid crystal devices and, more particularly, with the repair of defects. When a given defect is one color, the defective portion is filled with a negative type photosensitive resin of the same color as the defective pixels. When a defect extends over pixels of various different colors, the defective area is filled with a negative type photosensitive resin of gray. Repair is readily effected since self-alignment can be achieved using the filter as a photomask.