JPS63146023A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS63146023A JPS63146023A JP29457186A JP29457186A JPS63146023A JP S63146023 A JPS63146023 A JP S63146023A JP 29457186 A JP29457186 A JP 29457186A JP 29457186 A JP29457186 A JP 29457186A JP S63146023 A JPS63146023 A JP S63146023A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- cell
- type liquid
- color tone
- cells
- 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 title claims abstract description 62
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 claims abstract description 45
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 44
- 210000004027 cell Anatomy 0.000 abstract description 22
- 235000019646 color tone Nutrition 0.000 description 22
- 239000000758 substrate Substances 0.000 description 14
- 239000011521 glass Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006386 memory function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/141—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
〔概 要〕
本発明は、強誘電性液晶を用いた大画面表示パネルにお
いて、セル厚のバラツキにより色調が異なる問題を解決
するため、強誘電性液晶パネルのセル対応に、ＴＮ型液
晶パ名ルを組み合わせて、これを灰色フィルタとして働
かせ、ＴＮ型液晶パネルのセルごとに電圧を選択印加す
ることにより、強誘電性液晶特有の高いコントラスト比
を損なうことなく色調を調整できるようにした。[Detailed Description of the Invention] [Summary] The present invention aims to solve the problem of different color tones due to variations in cell thickness in large screen display panels using ferroelectric liquid crystals. By combining this with a TN-type liquid crystal panel and using it as a gray filter, and selectively applying a voltage to each cell of the TN-type liquid crystal panel, color tones can be changed without impairing the high contrast ratio characteristic of ferroelectric liquid crystals. Made it adjustable.
本発明は液晶表示装置に係り、特に強誘電性液晶を用い
た表示装置の色調調整手段に関する。The present invention relates to a liquid crystal display device, and more particularly to a color tone adjustment means for a display device using ferroelectric liquid crystal.
液晶パネルは従来よりＴＮ型液晶パネルが多く用いられ
、色調調整に関しても種々の手段及び方法が提唱されて
いる。−力強誘電性液晶パネルは、高速であること及び
メモリ機能を有することから、単純マトリクス構成で大
画面のパネルを製作し得るものとして有望視されている
。Conventionally, TN type liquid crystal panels have been widely used as liquid crystal panels, and various means and methods have been proposed for color tone adjustment. - Since ferroelectric liquid crystal panels are high-speed and have a memory function, they are viewed as promising as a means of manufacturing large-screen panels with a simple matrix configuration.
上記ＴＮ型液晶パネルの色調調整には、第４図に示すよ
うなカラーフィルタが用いられる。A color filter as shown in FIG. 4 is used to adjust the color tone of the TN type liquid crystal panel.
即ち、同図において、１は上側基板、Ｒは赤色のフィル
タ、Ｇは緑色のフィルタ、Ｂは青色のフィルタ、ｄｏｔ
、ｄＧ、ｄｌｌはそれぞれ、赤フィルタＲ３緑フィル
タＧ、青フィルタＢそれぞれの部分における基板間距離
、２は下側基板であり、下側基板２と３種類のフィルタ
Ｒ，Ｇ、Ｂ間にＴＮ型液晶が充填されている。That is, in the same figure, 1 is the upper substrate, R is a red filter, G is a green filter, B is a blue filter, and dot
, dG, and dll are the distances between the substrates in the red filter R, green filter G, and blue filter B, respectively, and 2 is the lower substrate, and there is a TN distance between the lower substrate 2 and the three types of filters R, G, and B. It is filled with type liquid crystal.
上記構成のフィルタＲ，Ｇ、Ｂは、有機色素を含むゼラ
チン膜からなり、透過する光の強度が色によって異なる
。そこで色ごとにフィルタの厚さを変えて基板間距離ｄ
Ｒ，ｄＧ、ｄ、を制御し、色調の違いを調整する。Filters R, G, and B having the above configuration are made of gelatin films containing organic dyes, and the intensity of transmitted light varies depending on the color. Therefore, by changing the thickness of the filter for each color, the distance between the boards is d.
Controls R, dG, d, and adjusts differences in color tone.
一方強誘電性液晶パネルは、液晶の屈折率異方性に起因
して、液晶層の厚さが異なると色づきが起こるため、Ｔ
Ｎ型液晶で用いたフィルタの厚さと基板間距離を異なら
しめる構造のカラーフィルタを用いた色調調整方法は使
用できない。On the other hand, in ferroelectric liquid crystal panels, coloring occurs when the thickness of the liquid crystal layer differs due to the refractive index anisotropy of the liquid crystal.
The color tone adjustment method using a color filter having a structure in which the thickness of the filter and the distance between the substrates are varied as used in N-type liquid crystal cannot be used.
更に上記構造のカラーフィルタは、フィルタＲ１Ｇ、Ｂ
を形成した後に基板を貼り合わせるため、貼り合わせ時
に生じるパネル相互間の基板間距離のバラツキに対応で
きず、パネル間で色調に相違が生じるという問題がある
。Furthermore, the color filters having the above structure include filters R1G and B.
Since the substrates are bonded together after forming the panel, it is not possible to deal with variations in the distance between the substrates between the panels that occur during bonding, and there is a problem that differences in color tone occur between the panels.
このように種々の問題があって、実用に供し得る強誘電
性液晶パネルにおける色調調整手段は現在存在しない。Due to these various problems, there is currently no means for adjusting color tone in a ferroelectric liquid crystal panel that can be put to practical use.
本発明の目的は、色調調整可能な強誘電性液晶表示装置
を提供することにある。An object of the present invention is to provide a ferroelectric liquid crystal display device that can adjust color tone.
第１図により本発明の詳細な説明する。 The present invention will be explained in detail with reference to FIG.
同図において、７は強誘電性液晶パネル、８はＴＮ型液
晶パネル、９は強誘電性液晶セル、１ｏはＴＮ型液晶セ
ル、１１は入射光、１２は強誘電性液晶セルを透過した
光、１３は透過光を示す。In the figure, 7 is a ferroelectric liquid crystal panel, 8 is a TN type liquid crystal panel, 9 is a ferroelectric liquid crystal cell, 1o is a TN type liquid crystal cell, 11 is incident light, and 12 is light transmitted through the ferroelectric liquid crystal cell. , 13 indicate transmitted light.
本発明は図示したように強誘電性液晶セル９とＴＮ型液
晶セル１０とを組み合わせることにより、強誘電性液晶
セル９を透過した光１２の強さが、波長によって差異が
あるのを、ＴＮ型液晶セル１ｏに印加する電圧を上記透
過光１２のスペクトルに応じて選択可能とし、もってＴ
Ｎ型液晶セル１０の諧調を制御することにより、強誘電
性液晶セル９の色調を補正し得るようにしたものである
。The present invention combines a ferroelectric liquid crystal cell 9 and a TN type liquid crystal cell 10 as shown in the figure, so that the intensity of light 12 transmitted through the ferroelectric liquid crystal cell 9 varies depending on the wavelength. The voltage applied to the type liquid crystal cell 1o can be selected according to the spectrum of the transmitted light 12, so that T
By controlling the tone of the N-type liquid crystal cell 10, the color tone of the ferroelectric liquid crystal cell 9 can be corrected.
本発明では、強誘電性液晶セル９のギャップ厚のバラツ
キより色調が異なるが、液晶セル９に対応してＴＮ型液
晶セル１０が設けられているので、このＴＮ型液晶セル
１０個々に印加電圧を選択することによって、セルごと
にその階調を制御でき、ＴＮ型液晶セル１０の透過光１
３は上記階調により強誘電性セルの透過光１２の色調を
補正したものとなる。従ってこの両者を組み合わせるこ
とにより、色調をセルごとに補正でき、完成したパネル
個々に合わせた色調調整が可能となる。In the present invention, although the color tone differs due to variations in the gap thickness of the ferroelectric liquid crystal cell 9, since the TN type liquid crystal cell 10 is provided corresponding to the liquid crystal cell 9, the applied voltage is applied to each of the TN type liquid crystal cells 10. By selecting , the gradation can be controlled for each cell.
3 is the color tone of the transmitted light 12 of the ferroelectric cell corrected by the above-mentioned gradation. Therefore, by combining the two, the color tone can be corrected for each cell, making it possible to adjust the color tone to suit each completed panel.
第２図は本発明の一実施例を示す液晶表示装置の断面図
である。図中、１４は上側偏光子、１５は上側ガラス基
板、１６は上側半透明電極、１７は上側配向膜、１８は
２μｍ球状スペーサ、１９は強誘電性液晶、２０は配向
膜、２１は半透明電極、２４はガラス基板、２５は偏光
子、２６はガラス基板、２７は半透明電極、２８は配向
膜、２９はＴＮ型液晶、３０はスペーサ、３１は配向膜
、３２は半透明電極、３３はガラス基板、３４は偏光板
、Ｒは赤色フィルタ、Ｇは緑色フィルタ、Ｂは青色フィ
ルタである。偏光子１４．２５．３４は互いに９０°の
角度をなす。FIG. 2 is a sectional view of a liquid crystal display device showing an embodiment of the present invention. In the figure, 14 is an upper polarizer, 15 is an upper glass substrate, 16 is an upper semitransparent electrode, 17 is an upper alignment film, 18 is a 2 μm spherical spacer, 19 is a ferroelectric liquid crystal, 20 is an alignment film, and 21 is semitransparent 24 is a glass substrate, 25 is a polarizer, 26 is a glass substrate, 27 is a translucent electrode, 28 is an alignment film, 29 is a TN type liquid crystal, 30 is a spacer, 31 is an alignment film, 32 is a translucent electrode, 33 is a glass substrate, 34 is a polarizing plate, R is a red filter, G is a green filter, and B is a blue filter. The polarizers 14, 25, 34 are at an angle of 90° to each other.
本実施例は、強誘電性液晶セルとＴＮ型液晶セルとが１
対１に対応する例で、この対応する２つの液晶セルは互
いに一方を透過する光が他方を透過するような位置関係
で、２つの液晶パネルが一体化して形成されている。In this example, a ferroelectric liquid crystal cell and a TN type liquid crystal cell are combined into one
In this example, two corresponding liquid crystal cells are formed by integrating two liquid crystal panels in such a positional relationship that light that passes through one of them passes through the other.
本実施例の液晶表示装置は、図示したような強誘電性液
晶パネル（図の上半分）とＴＮ型液晶パネル（図の下半
分）とカラーフィルタ（図の中央部）とを、セル対応に
組み合わせた構造を有し、ＴＮ型液晶パネルの各セルの
半透明電極２７．３２間に任意の電圧を印加できるよう
に構成しである。The liquid crystal display device of this example has a ferroelectric liquid crystal panel (upper half of the figure), a TN type liquid crystal panel (lower half of the figure), and a color filter (center of the figure) as shown in the figure, in a cell-compatible manner. It has a combined structure and is configured so that any voltage can be applied between the translucent electrodes 27 and 32 of each cell of the TN type liquid crystal panel.
次にかかる構造を有する本実施例の液晶表示装置の動作
を説明する。なお本実施例は光を上側から入射させても
、下側から入射させても使用できるが、以下説明の便宜
上、上から下方に向けて光を入射させるものとする。Next, the operation of the liquid crystal display device of this embodiment having such a structure will be explained. Although this embodiment can be used with light incident from above or below, for convenience of explanation below, light is incident from above downward.
この表示装置に白色光が入射し、強誘電性液晶パネルと
各フィルタＲ，Ｇ、Ｂを透過した光は、強誘電性液晶パ
ネルの基板間距離の僅かなバラツキ等によって、各色ご
とに透過光強度が異なるため、これら３色の透過光を合
成しても白色とはならず、所望の色調が得られない。White light is incident on this display device, and the light that passes through the ferroelectric liquid crystal panel and each filter R, G, and B is different for each color due to slight variations in the distance between the substrates of the ferroelectric liquid crystal panel. Since the intensities are different, even if the transmitted light of these three colors is combined, it will not be white, and the desired color tone will not be obtained.
一方、ＴＮ型液晶セルは、対向配置された半透明電極２
７．３２に印加する電圧により、透過する光量が制御さ
れ、その階調が変化する。そこで強誘電性液晶パネルの
各セル対応に設けたＴＮ型液晶セルごとに、対向配置さ
れた半透明電極２７．３２間に印加する電圧を、適当に
選ぶことによって透過光の光量を制御でき、従って強誘
電性液晶セルごとに色調を補正することができる。On the other hand, in a TN type liquid crystal cell, translucent electrodes 2 are placed opposite each other.
The amount of transmitted light is controlled by the voltage applied to 7.32, and its gradation changes. Therefore, the amount of transmitted light can be controlled by appropriately selecting the voltage applied between the translucent electrodes 27 and 32 arranged opposite to each other for each TN type liquid crystal cell provided for each cell of the ferroelectric liquid crystal panel. Therefore, the color tone can be corrected for each ferroelectric liquid crystal cell.
強誘電性液晶の屈折率異方性は凡そ１．１３であるので
、基板間距離は２μｍが理想的であるが、これを１．９
μｍと２．１μｍとした２つの液晶表示装置を作製した
。そして上述のように各ＴＮ型液晶セルの印加電圧を、
対応する強誘電性液晶セルの色調に応じて選択すること
により、上記２つの液晶表示装置の双方とも、透過率の
バラツキを、全波長域にわたって凡そ５％以内に抑える
ことができた。Since the refractive index anisotropy of ferroelectric liquid crystal is approximately 1.13, the ideal distance between the substrates is 2 μm, but this is reduced to 1.9 μm.
Two liquid crystal display devices with a thickness of μm and a thickness of 2.1 μm were manufactured. Then, as mentioned above, the applied voltage of each TN type liquid crystal cell is
By selecting according to the color tone of the corresponding ferroelectric liquid crystal cell, both of the above two liquid crystal display devices were able to suppress the variation in transmittance to approximately 5% or less over the entire wavelength range.
以上述べた如く本実施例によれば、強誘電性液晶パネル
とＴＮ型液晶パネルとを組み合わせることにより、強誘
電性液晶セルの透過光強度が波長によって差異があるの
を、ＴＮ型液晶セルに印加する電圧を上記透過光のスペ
クトルに応じて選択してＴＮ型液晶セルの諧調を制御可
能とし、これにより、強誘電性液晶セルの色調を補正し
得るようにした。As described above, according to this embodiment, by combining a ferroelectric liquid crystal panel and a TN type liquid crystal panel, the difference in transmitted light intensity of the ferroelectric liquid crystal cell depending on the wavelength can be avoided in the TN type liquid crystal cell. By selecting the applied voltage according to the spectrum of the transmitted light, the tone of the TN type liquid crystal cell can be controlled, thereby making it possible to correct the color tone of the ferroelectric liquid crystal cell.
なお、強誘電性液晶セルは状態遷移が高速であり且つメ
モリ機能を有することから、大画面の表示装置を作製で
きるのに対し、ＴＮ型液晶セルは比較的低速で且つ累積
応答するため、高いコントラストを得るには、走査線は
２００木ないしは４００本程度が限度とされている。そ
こで本発明を用いて大画面の表示装置を作製しようとし
ても、ＴＮ型液晶パネルの動作速度及びコントラストに
よって、画面の大きさが制約されるという問題がある。Ferroelectric liquid crystal cells have a fast state transition and have a memory function, making it possible to manufacture large-screen display devices, whereas TN liquid crystal cells have a relatively slow and cumulative response, so they have a high In order to obtain contrast, the number of scanning lines is limited to about 200 to 400 lines. Therefore, even if a large screen display device is manufactured using the present invention, there is a problem in that the screen size is limited by the operating speed and contrast of the TN type liquid crystal panel.
しかし上述の強誘電性液晶パネルの色調は、隣接するセ
ル間ではほぼ同一となるので、隣接配置された複数個の
セルを、１個のＴＮ型液晶セルで補正するように構成す
ることも可能である。However, since the color tone of the above-mentioned ferroelectric liquid crystal panel is almost the same between adjacent cells, it is also possible to configure multiple adjacent cells to be corrected with one TN type liquid crystal cell. It is.
そこで、ＴＮ型液晶セルの動作速度を越える高速動作を
必要とする大画面の表示装置を作製する場合には、強誘
電性液晶パネルの隣接する走査線０本に対して、ＴＮ型
液晶パネルの走査線１本を対応させ、両者の走査速度を
ｎ対１とすれば良い。Therefore, when manufacturing a large-screen display device that requires high-speed operation that exceeds the operating speed of a TN-type liquid crystal cell, it is necessary to It is sufficient to make one scanning line correspond to each other and set the scanning speed of both to n:1.
但し、ｎは正の整数である。However, n is a positive integer.
また、強誘電性液晶パネルにおける描画のためのセルに
対する電圧印加タイミングと、ＴＮ型液晶パネルにおけ
る色調補正のためのセルに対する電圧印加タイミングと
は、必ずしも一致する必要はない。そこで、ＴＮ型液晶
パネルを走査線の配列方向にｎ分割し、このｎ個の画面
を同時に並行して、強誘電性液晶パネルの走査速度の１
／ｎの速度で駆動するようにしてもよい。Furthermore, the timing of voltage application to cells for drawing in a ferroelectric liquid crystal panel and the timing of voltage application to cells for color tone correction in a TN liquid crystal panel do not necessarily have to coincide. Therefore, the TN type liquid crystal panel is divided into n parts in the direction of the arrangement of scanning lines, and these n screens are simultaneously run in parallel at 10% of the scanning speed of the ferroelectric liquid crystal panel.
It may also be driven at a speed of /n.
このように、強誘電性液晶パネルとＴＮ型液晶パネルの
セルとの対応関係は、必ずしも１対１である必要はなく
、ｎを正の整数としたさき、ｎ対１或いは１対ｎとする
ことができる。In this way, the correspondence between the cells of a ferroelectric liquid crystal panel and a TN type liquid crystal panel does not necessarily have to be 1:1, but may be n:1 or 1:n, where n is a positive integer. be able to.
なお本発明の液晶表示装置は、強誘電体液晶パネルの１
画素に１カラーフイルタが対応している時にはカラー表
示となり、複数（一般的にはＲＧＢ３フィルタ）が対応
している時には、モノクロ表示も可能である。Note that the liquid crystal display device of the present invention includes one of the ferroelectric liquid crystal panels.
When one color filter corresponds to a pixel, a color display is obtained, and when a plurality of pixels (generally three RGB filters) correspond to a pixel, a monochrome display is also possible.
以上説明した如く本発明によれば、強誘電性液晶パネル
内のセルごとの基板間距離のバラツキによる色づきを、
上記セルに対応して設けたＴＮ型液晶パネルの各セルに
かける電圧を選択することで補正可能な、新規な液晶表
示装置が提供される。As explained above, according to the present invention, discoloration due to variations in the distance between the substrates of each cell in a ferroelectric liquid crystal panel can be reduced.
A novel liquid crystal display device is provided that can be corrected by selecting the voltage applied to each cell of a TN type liquid crystal panel provided corresponding to the above cells.
第１図は本発明の原理説明図、
第２図本発明−実施例の説明図、
第３図従来の液晶パネルの色調調整方法説明図である。
図において、７は強誘電性液晶パネル、８はＴＮ型液晶
パネル、９は強誘電性液晶セル、１０はＴＮ型液晶セル
、１１は入射光、１２は強誘電性液晶パネルの透過光、
１３は液晶表示装置の透過光、１９は強誘電性液晶、１
６．２１は強誘電性液晶セル９の半透明電極、２７．３
２はＴＮ型液晶セル１０の半透明電極、２９はＴＮ型液
晶、Ｒ，Ｇ、Ｂはそれぞれ赤色。
緑色、青色のカラーフィルタを示す。
杢応所康理註四辺
第１図
１ ｈｇ’、ｒ靭
７Ｎ”ＦＪ−麟ハ・ネル諌習酊Ｊ呵ｉか丑ｉａ月υ丁第
３図FIG. 1 is an explanatory diagram of the principle of the present invention, FIG. 2 is an explanatory diagram of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of a conventional method for adjusting color tone of a liquid crystal panel. In the figure, 7 is a ferroelectric liquid crystal panel, 8 is a TN type liquid crystal panel, 9 is a ferroelectric liquid crystal cell, 10 is a TN type liquid crystal cell, 11 is incident light, 12 is transmitted light of the ferroelectric liquid crystal panel,
13 is transmitted light of a liquid crystal display device, 19 is a ferroelectric liquid crystal, 1
6.21 is a semi-transparent electrode of ferroelectric liquid crystal cell 9, 27.3
2 is a translucent electrode of the TN type liquid crystal cell 10, 29 is a TN type liquid crystal, and R, G, and B are each red. Green and blue color filters are shown.杢应所korigo Notes 4th side Figure 1 1 hg', r 7N”FJ-Rinha Neru 諌し酊J 呵 i 丑IA 月 υ ding 3rd figure
Claims (1)
パネル（７）と、前記複数個の強誘電性液晶セルに対応
する複数個のＴＮ型液晶セル（１０）を有するＴＮ型液
晶パネル（８）とを具備し、これらパネルは前記強誘電
性液晶セルを透過する光が対応するＴＮ型液晶セルを透
過する如く配設され、且つ前記ＴＮ型液晶セルの各々に
所望の電圧を印加可能としたことを特徴とする液晶表示
装置。A ferroelectric liquid crystal panel (7) having a plurality of ferroelectric liquid crystal cells (9), and a TN type liquid crystal having a plurality of TN type liquid crystal cells (10) corresponding to the plurality of ferroelectric liquid crystal cells. panels (8), these panels are arranged so that the light transmitted through the ferroelectric liquid crystal cells is transmitted through the corresponding TN type liquid crystal cells, and each of the TN type liquid crystal cells is provided with a desired voltage. A liquid crystal display device characterized by being capable of applying voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29457186A JPS63146023A (en) | 1986-12-09 | 1986-12-09 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29457186A JPS63146023A (en) | 1986-12-09 | 1986-12-09 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63146023A true JPS63146023A (en) | 1988-06-18 |
Family
ID=17809502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29457186A Pending JPS63146023A (en) | 1986-12-09 | 1986-12-09 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63146023A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09189893A (en) * | 1996-01-09 | 1997-07-22 | Nec Corp | Liquid crystal projector |
| JP2005531796A (en) * | 2002-06-25 | 2005-10-20 | ピュアー デプス リミテッド | Display highlighting technology through local dynamic control of background illumination level |
| CN112002288A (en) * | 2020-08-28 | 2020-11-27 | 深圳市华星光电半导体显示技术有限公司 | Chrominance adjusting method, chrominance adjusting device and display panel |
-
1986
- 1986-12-09 JP JP29457186A patent/JPS63146023A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09189893A (en) * | 1996-01-09 | 1997-07-22 | Nec Corp | Liquid crystal projector |
| JP2005531796A (en) * | 2002-06-25 | 2005-10-20 | ピュアー デプス リミテッド | Display highlighting technology through local dynamic control of background illumination level |
| CN112002288A (en) * | 2020-08-28 | 2020-11-27 | 深圳市华星光电半导体显示技术有限公司 | Chrominance adjusting method, chrominance adjusting device and display panel |
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