JPWO2019147771A5 - - Google Patents

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JPWO2019147771A5
JPWO2019147771A5 JP2020540724A JP2020540724A JPWO2019147771A5 JP WO2019147771 A5 JPWO2019147771 A5 JP WO2019147771A5 JP 2020540724 A JP2020540724 A JP 2020540724A JP 2020540724 A JP2020540724 A JP 2020540724A JP WO2019147771 A5 JPWO2019147771 A5 JP WO2019147771A5
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retarder
display device
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input display
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JP2021511547A (en
JP7353007B2 (en
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タッチ入力ディスプレイデバイスであって、
光を出力するように配設された空間光変調器（ＳＬＭ）と、
前記ＳＬＭの出力側に配設されたディスプレイ偏光器であって、前記ディスプレイ偏光器が直線偏光器である、ディスプレイ偏光器と、
前記ディスプレイ偏光器の出力側に配設された追加の偏光器であって、前記追加の偏光器が直線偏光器である、追加の偏光器と、
前記ディスプレイ偏光器と前記追加の偏光器との間に配設された液晶材料層を備える切り替え可能な液晶リターダであって、前記切り替え可能な液晶リターダが、偏光方向制御リターダであり、前記偏光方向制御リターダが、前記切り替え可能な液晶リターダの切り替え可能な状態において、同時に、前記切り替え可能な液晶リターダの平面の法線に沿った軸に沿って前記ディスプレイ偏光器を通過する光の直交偏光成分に正味の相対位相シフトを導入しないように、かつ前記切り替え可能な液晶リターダの平面の法線に対して傾斜した軸に沿って前記ディスプレイ偏光器を通過する光の直交偏光成分に相対位相シフトを導入するように配設されている、切り替え可能な液晶リターダと、
前記切り替え可能な液晶リターダの前記状態を制御するための電圧を印加するように配設された切り替え可能なリターダ制御電極と、
前記切り替え可能なリターダ制御電極の出力側の層に配設された少なくとも１つのタッチ電極アレイと、
前記切り替え可能な液晶リターダと、前記切り替え可能な液晶リターダの前記出力側の前記追加の偏光器と、の間に配設された少なくとも１つのパッシブリターダと、
を備え
前記タッチ入力ディスプレイデバイスが１つのタッチ電極アレイを備える場合に、前記タッチ電極アレイが、または前記タッチ入力ディスプレイデバイスが２つ以上のタッチ電極アレイを備える場合に、前記タッチ電極アレイのうちの１つが、前記少なくとも１つのパッシブリターダが１つのパッシブリターダを備える場合に、前記パッシブリターダの表面上に、または前記少なくとも１つのパッシブリターダが２つ以上のパッシブリターダを備える場合に、前記パッシブリターダのうちの１つの表面上に、形成されている、
タッチ入力ディスプレイデバイス。 A touch input display device,
a spatial light modulator (SLM) arranged to output light;
a display polarizer disposed at the output side of said SLM, said display polarizer being a linear polarizer;
an additional polarizer disposed at the output side of said display polarizer, said additional polarizer being a linear polarizer;
A switchable liquid crystal retarder comprising a layer of liquid crystal material disposed between the display polarizer and the additional polarizer, wherein the switchable liquid crystal retarder is a polarization direction control retarder and the polarization direction. A control retarder simultaneously, in the switchable state of the switchable liquid crystal retarder, to the orthogonal polarization components of light passing through the display polarizer along an axis normal to the plane of the switchable liquid crystal retarder. Introduce a relative phase shift in orthogonal polarization components of light passing through the display polarizer along an axis that is tilted relative to the normal to the plane of the switchable liquid crystal retarder so as not to introduce a net relative phase shift. a switchable liquid crystal retarder arranged to
a switchable retarder control electrode arranged to apply a voltage to control the state of the switchable liquid crystal retarder;
at least one touch electrode array disposed in a layer on the output side of the switchable retarder control electrodes;
at least one passive retarder arranged between the switchable liquid crystal retarder and the additional polarizer at the output side of the switchable liquid crystal retarder;
equipped with
If the touch input display device comprises one touch electrode array, the touch electrode array, or if the touch input display device comprises two or more touch electrode arrays, one of the touch electrode arrays. , on the surface of the passive retarder if the at least one passive retarder comprises one passive retarder, or of the passive retarders if the at least one passive retarder comprises two or more passive retarders formed on one surface,
A touch input display device. 前記少なくとも１つのパッシブリターダが、偏光方向制御リターダであり、前記偏光方向制御リターダが、同時に、前記切り替え可能な液晶リターダの平面の法線に沿った軸に沿って前記ディスプレイ偏光器を通過する光の直交偏光成分に正味の相対位相シフトを導入せず、かつ前記切り替え可能な液晶リターダの平面の法線に対して傾斜した軸に沿って前記ディスプレイ偏光器を通過する光の直交偏光成分に相対位相シフトを導入する、請求項１に記載のタッチ入力ディスプレイデバイス。 The at least one passive retarder is a polarization steering retarder, and the polarization steering retarder simultaneously passes light through the display polarizer along an axis normal to the plane of the switchable liquid crystal retarder. and introduces no net relative phase shift to the orthogonal polarization components of light passing through the display polarizer along an axis that is tilted with respect to the normal to the plane of the switchable liquid crystal retarder. The touch input display device of Claim 1 , which introduces a phase shift. 前記少なくとも１つのタッチ電極アレイが、少なくとも１つの誘電体層によって分離された層に配設されたタッチ電極アレイ対を含む、請求項１または２に記載のタッチ入力ディスプレイデバイス。 3. The touch input display device of claim 1 or 2 , wherein the at least one touch electrode array comprises touch electrode array pairs arranged in layers separated by at least one dielectric layer. 前記タッチ電極アレイ対の各々が、前記タッチ入力ディスプレイデバイスが１つのパッシブリターダを備える場合に、前記パッシブリターダのそれぞれの表面上に、または前記タッチ入力ディスプレイデバイスが２つ以上のパッシブリターダを備える場合に、前記パッシブリターダのうちの１つのそれぞれの表面上に、形成されている、請求項３に記載のタッチ入力ディスプレイデバイス。 Each of said touch electrode array pairs is on a respective surface of said passive retarder if said touch input display device comprises one passive retarder, or if said touch input display device comprises two or more passive retarders. 4. The touch input display device of claim 3 , formed on a respective surface of one of said passive retarders. 前記少なくとも１つの誘電体層が、前記タッチ入力ディスプレイデバイスが１つのパッシブリターダを備える場合に、前記パッシブリターダを備え、または前記タッチ入力ディスプレイデバイスが２つ以上のパッシブリターダを備える場合に、前記パッシブリターダのうちの少なくとも１つを備える、請求項３に記載のタッチ入力ディスプレイデバイス。 The at least one dielectric layer comprises the passive retarder if the touch input display device comprises one passive retarder, or the passive retarder if the touch input display device comprises two or more passive retarders. 4. The touch input display device of Claim 3 , comprising at least one of retarders. 前記タッチ入力ディスプレイデバイスが２つ以上のパッシブリターダを備え、前記少なくとも１つの誘電体層が少なくとも２つのパッシブリターダを備える、請求項３に記載のタッチ入力ディスプレイデバイス。 4. The touch input display device of Claim 3 , wherein the touch input display device comprises two or more passive retarders, and wherein the at least one dielectric layer comprises at least two passive retarders. 前記少なくとも１つの誘電体層が、リターダではない少なくとも１つの追加の層を備える、請求項３に記載のタッチ入力ディスプレイデバイス。 4. The touch input display device of Claim 3 , wherein the at least one dielectric layer comprises at least one additional layer that is not a retarder. 前記少なくとも１つのパッシブリターダが、パッシブ一軸リターダであって、前記パッシブ一軸リターダの平面に対して垂直な光学軸を有する、パッシブ一軸リターダを含む、請求項１または２に記載のタッチ入力ディスプレイデバイス。 3. The touch input display device of claim 1 or 2 , wherein the at least one passive retarder comprises a passive uniaxial retarder having an optic axis perpendicular to the plane of the passive uniaxial retarder. 前記少なくとも１つのパッシブリターダが、パッシブ一軸リターダの対であって、前記パッシブ一軸リターダの平面内に交差する光学軸を有する、パッシブ一軸リターダ対を含む、請求項３に記載のタッチ入力ディスプレイデバイス。 4. The touch input display device of claim 3, wherein the at least one passive retarder comprises a pair of passive uniaxial retarders, the passive uniaxial retarder pair having intersecting optic axes in the plane of the passive uniaxial retarders. 前記少なくとも１つのタッチ電極アレイが、前記パッシブ一軸リターダ対のそれぞれのパッシブ一軸リターダの対向表面上に形成されたタッチ電極アレイ対を含み、前記少なくとも１つの誘電体層が、前記パッシブ一軸リターダ対間に配設された少なくとも１つの追加の層を備える、請求項９に記載のタッチ入力ディスプレイデバイス。 The at least one touch electrode array comprises a touch electrode array pair formed on opposing surfaces of each passive uniaxial retarder of the passive uniaxial retarder pair, and the at least one dielectric layer is between the passive uniaxial retarder pairs. 10. The touch input display device of claim 9 , comprising at least one additional layer disposed on the . 前記少なくとも１つの誘電体層が、前記タッチ電極アレイ対間に配設された接着層を備える、請求項１０に記載のタッチ入力ディスプレイデバイス。 11. The touch input display device of Claim 10 , wherein said at least one dielectric layer comprises an adhesive layer disposed between said touch electrode array pairs. 前記少なくとも１つのタッチ電極アレイが、前記パッシブ一軸リターダ対のそれぞれのパッシブ一軸リターダの外面上に形成されたタッチ電極アレイ対を含み、前記少なくとも１つの誘電体層が、前記パッシブ一軸リターダ対を備える、請求項９に記載のタッチ入力ディスプレイデバイス。 The at least one touch electrode array comprises a touch electrode array pair formed on an outer surface of each passive uniaxial retarder of the passive uniaxial retarder pair, and the at least one dielectric layer comprises the passive uniaxial retarder pair. 10. The touch input display device of claim 9 . 入力透明支持基板および出力透明支持基板をさらに備え、前記液晶材料層が、前記入力透明支持基板と前記出力透明支持基板との間に配設されており、前記少なくとも１つのタッチ電極アレイが、前記出力透明支持基板の出力側に配設されている、請求項１に記載のタッチ入力ディスプレイデバイス。 Further comprising an input transparent support substrate and an output transparent support substrate, wherein the liquid crystal material layer is disposed between the input transparent support substrate and the output transparent support substrate, and the at least one touch electrode array comprises the 2. The touch input display device of claim 1 , disposed on the output side of the output transparent support substrate. 入力透明支持基板および出力透明支持基板をさらに備え、前記液晶材料層が、前記入力透明支持基板と前記出力透明支持基板との間に配設されており、前記少なくとも１つのタッチ電極アレイが、前記切り替え可能なリターダ制御電極と前記出力透明支持基板との間に配設されている、請求項１に記載のタッチ入力ディスプレイデバイス。 Further comprising an input transparent support substrate and an output transparent support substrate, wherein the liquid crystal material layer is disposed between the input transparent support substrate and the output transparent support substrate, and the at least one touch electrode array comprises the 2. The touch input display device of claim 1 , disposed between a switchable retarder control electrode and the output transparent support substrate. 前記少なくとも１つのタッチ電極アレイが、前記切り替え可能なリターダ制御電極と前記追加の偏光器との間に配設されている、請求項１に記載のタッチ入力ディスプレイデバイス。 2. The touch input display device of claim 1 , wherein said at least one touch electrode array is arranged between said switchable retarder control electrode and said additional polarizer. 前記少なくとも１つのタッチ電極アレイが、前記切り替え可能なリターダ制御電極から分離されている、請求項１に記載のタッチ入力ディスプレイデバイス。 2. The touch input display device of claim 1 , wherein said at least one touch electrode array is separate from said switchable retarder control electrodes. 前記切り替え可能なリターダ制御電極が、前記液晶材料層の両側に配設されている、請求項１に記載のタッチ入力ディスプレイデバイス。 2. The touch-input display device of claim 1 , wherein the switchable retarder control electrodes are disposed on opposite sides of the layer of liquid crystal material. 前記ディスプレイ偏光器と前記切り替え可能な液晶リターダとの間に配設された反射偏光器をさらに備える、請求項１に記載のタッチ入力ディスプレイデバイス。 2. The touch input display device of Claim 1 , further comprising a reflective polarizer disposed between said display polarizer and said switchable liquid crystal retarder. 制御システムをさらに備え、前記制御システムが、前記切り替え可能な液晶リターダを制御するために前記切り替え可能なリターダ制御電極に駆動電圧を印加するように配設されており、前記制御システムが、容量性タッチ検知のために前記少なくとも１つのタッチ電極アレイにアドレスするように配設されている、請求項１に記載のタッチ入力ディスプレイデバイス。 further comprising a control system, wherein the control system is arranged to apply a drive voltage to the switchable retarder control electrode to control the switchable liquid crystal retarder, the control system comprising a capacitive 2. The touch input display device of claim 1 , arranged to address the at least one touch electrode array for touch sensing. 前記駆動電圧が、前記駆動電圧が一定である期間を含む波形を有し、前記制御システムが、前記駆動電圧が一定である前記期間のうちの少なくとも１つの間に前記少なくとも１つのタッチ電極アレイにアドレスするように配設されている、請求項１９に記載のタッチ入力ディスプレイデバイス。 wherein the drive voltage has a waveform including periods during which the drive voltage is constant, and the control system controls the at least one touch electrode array during at least one of the periods during which the drive voltage is constant. 20. A touch input display device according to claim 19 , arranged to address. 前記駆動電圧が、前記駆動電圧が一定であるがそれぞれ異なるレベルである期間を含む波形を有し、前記制御システムが、前記駆動電圧が一定であって同じレベルである前記期間のうちの少なくとも１つの間に前記少なくとも１つのタッチ電極アレイにアドレスするように配設されている、請求項２０に記載のタッチ入力ディスプレイデバイス。 wherein the drive voltage has a waveform including periods during which the drive voltage is constant but at different levels, and the control system determines at least one of the periods during which the drive voltage is constant and at the same level. 21. The touch input display device of claim 20 , arranged to address the at least one touch electrode array between two. 前記駆動電圧の前記波形が、正極性の少なくとも１つのパルスを含む正のアドレッシング位相と、負極性の少なくとも１つのパルスを含む負のアドレッシング位相と、を含み、前記正極性の少なくとも１つのパルスのピークと、前記負極性の少なくとも１つのパルスのピークとが、前記駆動電圧が一定である前記期間である、請求項２１に記載のタッチ入力ディスプレイデバイス。 wherein the waveform of the drive voltage includes a positive addressing phase including at least one pulse of positive polarity and a negative addressing phase including at least one pulse of negative polarity; 22. The touch input display device of claim 21 , wherein a peak and a peak of said at least one pulse of negative polarity are said period during which said drive voltage is constant. 前記駆動電圧の前記波形が、正極性の少なくとも１つのパルスおよび少なくとも１つの追加期間を含む正のアドレッシング位相と、負極性の少なくとも１つのパルスおよび少なくとも１つの追加の期間を含む負のアドレッシング位相と、を含み、前記正のアドレッシング位相の前記少なくとも１つの追加の期間と前記負のアドレッシング位相の前記少なくとも１つの追加の期間とが、前記駆動電圧が一定であり、かつ前記正極性の少なくとも１つのパルスの最大レベルと前記負極性の少なくとも１つのパルスの最小レベルとの中間のレベルを有する、前記期間である、請求項２０または２１に記載のタッチ入力ディスプレイデバイス。 wherein said waveform of said drive voltage comprises a positive addressing phase including at least one pulse of positive polarity and at least one additional period and a negative addressing phase including at least one pulse of negative polarity and at least one additional period; , wherein the at least one additional period of the positive addressing phase and the at least one additional period of the negative addressing phase are constant and the at least one period of the positive polarity; 22. A touch input display device according to claim 20 or 21 , wherein said period has a level intermediate between a maximum level of pulses and a minimum level of said at least one pulse of negative polarity. 前記正のアドレッシング位相の前記少なくとも１つの追加の期間と前記負のアドレッシング位相の前記少なくとも１つの追加の期間とが、ゼロボルトのレベルを有する、請求項２３に記載のタッチ入力ディスプレイデバイス。 24. The touch input display device of claim 23 , wherein said at least one additional period of said positive addressing phase and said at least one additional period of said negative addressing phase have a level of zero volts. 前記正のアドレッシング位相の前記少なくとも１つの追加の期間と前記負のアドレッシング位相の前記少なくとも１つの追加の期間とが、ゼロでない大きさのレベルを有する、請求項２３に記載のタッチ入力ディスプレイデバイス。 24. The touch input display device of claim 23 , wherein the at least one additional period of the positive addressing phase and the at least one additional period of the negative addressing phase have non-zero magnitude levels. 前記駆動電圧が、前記液晶リターダの一定の液晶光学配向状態を与える二乗平均平方根値を有し、かつゼロの算術平均を有する波形を有する、請求項１９に記載のタッチ入力ディスプレイデバイス。 20. The touch input display device of claim 19 , wherein the drive voltage has a root mean square value that provides a constant liquid crystal optical alignment state of the liquid crystal retarder and has a waveform with an arithmetic mean of zero. 前記制御システムが、前記ＳＬＭにアドレスするようにさらに配設されている、請求項１９に記載のタッチ入力ディスプレイデバイス。 20. The touch input display device of Claim 19 , wherein the control system is further arranged to address the SLM. 前記制御システムが前記切り替え可能なリターダ制御電極に印加するように配設された前記駆動電圧が、前記ＳＬＭにアドレスすることに同期する、請求項２７に記載のタッチ入力ディスプレイデバイス。 28. The touch input display device of Claim 27, wherein the drive voltages arranged to be applied by the control system to the switchable retarder control electrodes are synchronized with addressing the SLM. 前記制御システムが、垂直ブランキング間隔を含むアドレッシング方式を使用して前記ＳＬＭにアドレスするように配設されており、前記制御システムが、前記垂直ブランキング間隔中に前記少なくとも１つのタッチ電極アレイにアドレスするように配設されている、請求項２７または２８に記載のタッチ入力ディスプレイデバイス。 The control system is arranged to address the SLM using an addressing scheme that includes a vertical blanking interval, the control system controlling the at least one touch electrode array during the vertical blanking interval. 29. A touch input display device according to claim 27 or 28 arranged for addressing. タッチ入力ディスプレイデバイスを制御する方法であって、前記タッチ入力ディスプレイデバイスが、
光を出力するように配設された空間光変調器（ＳＬＭ）と、
前記ＳＬＭの出力側に配設されたディスプレイ偏光器であって、前記ディスプレイ偏光器が直線偏光器である、ディスプレイ偏光器と、
前記ディスプレイ偏光器の出力側に配設された追加の偏光器であって、前記追加の偏光器が直線偏光器である、追加の偏光器と、
前記ディスプレイ偏光器と前記追加の偏光器との間に配設された液晶材料層を備える切り替え可能な液晶リターダと、
前記切り替え可能な液晶リターダを制御するための電圧を印加するように配設された切り替え可能なリターダ制御電極と、
前記切り替え可能なリターダ制御電極の出力側の層に配設された少なくとも１つのタッチ電極アレイと、
前記切り替え可能な液晶リターダと、前記前記切り替え可能な液晶リターダの前記出力側の前記追加の偏光器と、の間に配設された少なくとも１つのパッシブリターダと、
を備え、
前記タッチ入力ディスプレイデバイスが１つのタッチ電極アレイを備える場合に、前記タッチ電極アレイが、または前記タッチ入力ディスプレイデバイスが２つ以上のタッチ電極アレイを備える場合に、前記タッチ電極アレイのうちの１つが、前記少なくとも１つのパッシブリターダが１つのパッシブリターダを備える場合に、前記パッシブリターダの表面上に、または前記少なくとも１つのパッシブリターダが２つ以上のパッシブリターダを備える場合に、前記パッシブリターダのうちの１つの表面上に、形成されており、
前記方法が、
前記切り替え可能な液晶リターダを制御するために前記切り替え可能なリターダ制御電極に駆動電圧を印加することであって、前記駆動電圧が、前記駆動電圧が一定である期間を含む波形を有する、印加することと、
前記駆動電圧が一定である前記期間のうちの少なくとも１つの間に容量性タッチ検知のために前記少なくとも１つのタッチ電極アレイにアドレスすることと、を含む、方法。 A method of controlling a touch input display device, the touch input display device comprising:
a spatial light modulator (SLM) arranged to output light;
a display polarizer disposed at the output side of said SLM, said display polarizer being a linear polarizer;
an additional polarizer disposed at the output side of said display polarizer, said additional polarizer being a linear polarizer;
a switchable liquid crystal retarder comprising a layer of liquid crystal material disposed between the display polarizer and the additional polarizer;
a switchable retarder control electrode arranged to apply a voltage to control the switchable liquid crystal retarder;
at least one touch electrode array disposed in a layer on the output side of the switchable retarder control electrodes;
at least one passive retarder arranged between the switchable liquid crystal retarder and the additional polarizer on the output side of the switchable liquid crystal retarder;
with
If the touch input display device comprises one touch electrode array, the touch electrode array, or if the touch input display device comprises two or more touch electrode arrays, one of the touch electrode arrays. , on the surface of the passive retarder if the at least one passive retarder comprises one passive retarder, or of the passive retarders if the at least one passive retarder comprises two or more passive retarders formed on one surface,
said method comprising:
applying a drive voltage to the switchable retarder control electrodes to control the switchable liquid crystal retarder, the drive voltage having a waveform including a period during which the drive voltage is constant; and
and addressing the at least one touch electrode array for capacitive touch sensing during at least one of the periods in which the drive voltage is constant.
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