JP2021144247A5 - - Google Patents

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JP2021144247A5
JP2021144247A5 JP2021097235A JP2021097235A JP2021144247A5 JP 2021144247 A5 JP2021144247 A5 JP 2021144247A5 JP 2021097235 A JP2021097235 A JP 2021097235A JP 2021097235 A JP2021097235 A JP 2021097235A JP 2021144247 A5 JP2021144247 A5 JP 2021144247A5
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polyester film
liquid crystal
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crystal display
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バックライト光源、２つの偏光板、及び前記２つの偏光板の間に配置された液晶セルを有する液晶表示装置であって、
前記バックライト光源は、４００ｎｍ以上４９５ｎｍ未満、４９５ｎｍ以上６００ｎｍ未満及び６００ｎｍ以上７８０ｎｍ以下の各波長領域にそれぞれ発光スペクトルのピークトップを有し、かつ、６００ｎｍ以上７８０ｎｍ以下の波長領域における最もピーク強度の高いピークの半値幅が５ｎｍ未満である発光スペクトルを有する白色光源であり、
前記偏光板のうち少なくとも一方の偏光板は、偏光子の少なくとも一方の面に１５００〜３００００ｎｍのリタデーションを有するポリエステルフィルムが積層されたものであり、前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６２である、
液晶表示装置。 A liquid crystal display device having a backlight light source, two polarizing plates, and a liquid crystal cell arranged between the two polarizing plates.
The backlight source has a peak top of the emission spectrum in each wavelength region of 400 nm or more and less than 495 nm, 495 nm or more and less than 600 nm, and 600 nm or more and 780 nm or less, and has the highest peak intensity in the wavelength region of 600 nm or more and 780 nm or less. A white light source having an emission spectrum with a peak width at half maximum of less than 5 nm.
At least one of the polarizing plates is obtained by laminating a polyester film having a retardation of 1500 to 30,000 nm on at least one surface of the polarizing element, and the polarizing plate is in a direction parallel to the transmission axis of the polarizing element. The refractive index of the polyester film is 1.53 to 1.62.
Liquid crystal display device. 前記バックライト光源の発光スペクトルは、 The emission spectrum of the backlight source is
４００ｎｍ以上４９５ｎｍ未満の波長領域における最もピーク強度の高いピークの半値幅が５ｎｍ以上であり、 The half width of the peak with the highest peak intensity in the wavelength region of 400 nm or more and less than 495 nm is 5 nm or more.
４９５ｎｍ以上６００ｎｍ未満の波長領域における最もピーク強度の高いピークの半値幅が５ｎｍ以上である、 The half width of the peak with the highest peak intensity in the wavelength region of 495 nm or more and less than 600 nm is 5 nm or more.
請求項１に記載の液晶表示装置。The liquid crystal display device according to claim 1. バックライト光源、２つの偏光板、及び前記２つの偏光板の間に配置された液晶セルを有する液晶表示装置であって、 A liquid crystal display device having a backlight light source, two polarizing plates, and a liquid crystal cell arranged between the two polarizing plates.
前記バックライト光源は、フッ化物錯体蛍光体を含む白色光源であり、 The backlight light source is a white light source containing a fluoride complex phosphor, and is a white light source.
前記偏光板のうち少なくとも一方の偏光板は、偏光子の少なくとも一方の面に１５００〜３００００ｎｍのリタデーションを有するポリエステルフィルムが積層されたものであり、 At least one of the polarizing plates is obtained by laminating a polyester film having a retardation of 1500 to 30,000 nm on at least one surface of the polarizing element.
前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６２である、The polyester film has a refractive index of 1.53 to 1.62 in a direction parallel to the transmission axis of the polarizing element.
液晶表示装置。Liquid crystal display device. 前記フッ化物蛍光体が。Ｍｎ The fluoride phosphor. Mn ４＋4+ 付活フッ化物錯体蛍光体である請求項３に記載の液晶表示装置。The liquid crystal display device according to claim 3, which is an activated fluoride complex phosphor. 前記ポリエステルフィルムの厚みが２５〜８０μｍである請求項１〜４のいずれかに記載の液晶表示装置（但し、厚み８０μｍであるものは除く） The liquid crystal display device according to any one of claims 1 to 4, wherein the polyester film has a thickness of 25 to 80 μm (excluding those having a thickness of 80 μm). 前記ポリエステルフィルムのリタデーションが８０００ｎｍ以上である、
請求項１〜４のいずれかに記載の液晶表示装置。 The retardation of the polyester film is 8000 nm or more.
The liquid crystal display device according to any one of claims 1 to 4. 前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６１であり、
前記ポリエステルフィルムのＲｅ／Ｒｔｈが０．２〜０．８５である、
請求項１〜４のいずれかに記載の液晶表示装置。 The polyester film has a refractive index of 1.53 to 1.61 in a direction parallel to the transmission axis of the polarizing element.
The Re / Rth of the polyester film is 0.2 to 0.85.
The liquid crystal display device according to any one of claims 1 to 4. 前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６０であり、
前記ポリエステルフィルムのリタデーションが４１６０ｎｍ以上である、
請求項１〜４のいずれかに記載の液晶表示装置。 The polyester film has a refractive index of 1.53 to 1.60 in a direction parallel to the transmission axis of the polarizing element.
The retardation of the polyester film is 4160 nm or more.
The liquid crystal display device according to any one of claims 1 to 4. 前記ポリエステルフィルムのリタデーションが４１６０〜７８２０ｎｍである、
請求項１〜４のいずれかに記載の液晶表示装置。 The retardation of the polyester film is 4160 to 7820 nm.
The liquid crystal display device according to any one of claims 1 to 4. 前記偏光子の透過軸方向における屈折率と、前記偏光子の透過軸と平行な方向における前記ポリエステルフィルムの屈折率との差が０．１２以下である、請求項１〜９のいずれかに記載の液晶表示装置。 The refractive index in the transmission axis direction of the polarizer, the difference between the refractive index of the polyester film in the transmission direction parallel to the axis of the polarizer is 0.12 or less, according to any one of claims 1-9 LCD display device. 偏光子の少なくとも一方の面に１５００〜３００００ｎｍのリタデーションを有するポリエステルフィルムが積層された偏光板であって、
前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６２である、
４００ｎｍ以上４９５ｎｍ未満、４９５ｎｍ以上６００ｎｍ未満及び６００ｎｍ以上７８０ｎｍ以下の各波長領域にそれぞれ発光スペクトルのピークトップを有し、かつ、６００ｎｍ以上７８０ｎｍ以下の波長領域における最もピーク強度の高いピークの半値幅が５ｎｍ未満である発光スペクトルを有する白色光源からなるバックライト光源を有する液晶表示装置用偏光板。 A polarizing plate in which a polyester film having a retardation of 1500 to 30,000 nm is laminated on at least one surface of a polarizing element.
The polyester film has a refractive index of 1.53 to 1.62 in a direction parallel to the transmission axis of the polarizing element.
It has a peak top of the emission spectrum in each wavelength region of 400 nm or more and less than 495 nm, 495 nm or more and less than 600 nm, and 600 nm or more and 780 nm or less, and the half width of the peak with the highest peak intensity in the wavelength region of 600 nm or more and 780 nm or less is 5 nm. A polarizing plate for a liquid crystal display device having a backlight source composed of a white light source having an emission spectrum of less than. 偏光子の少なくとも一方の面に１５００〜３００００ｎｍのリタデーションを有するポリエステルフィルムが積層された偏光板であって、 A polarizing plate in which a polyester film having a retardation of 1500 to 30,000 nm is laminated on at least one surface of a polarizing element.
前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６２である、 The polyester film has a refractive index of 1.53 to 1.62 in a direction parallel to the transmission axis of the polarizing element.
フッ化物錯体蛍光体を含む白色光源からなるバックライト光源を有する液晶表示装置用偏光板。 A polarizing plate for a liquid crystal display device having a backlight light source composed of a white light source containing a fluoride complex phosphor. 前記フッ化物蛍光体が。ＭｎThe fluoride phosphor. Mn ４＋4+ 付活フッ化物錯体蛍光体である請求項１２に記載の液晶表示装置。The liquid crystal display device according to claim 12, which is an activated fluoride complex phosphor. 前記ポリエステルフィルムの厚みが２５〜８０μｍである請求項１１〜１３のいずれかに記載の液晶表示装置用偏光板（但し、厚み８０μｍであるものは除く） The polarizing plate for a liquid crystal display device according to any one of claims 11 to 13, wherein the polyester film has a thickness of 25 to 80 μm (excluding those having a thickness of 80 μm). 前記ポリエステルフィルムのリタデーションが８０００ｎｍ以上である、
請求項１１〜１３のいずれかに記載の液晶表示装置用偏光板。 The retardation of the polyester film is 8000 nm or more.
The polarizing plate for a liquid crystal display device according to any one of claims 11 to 13. 前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６１であり、
前記ポリエステルフィルムのＲｅ／Ｒｔｈが０．２〜０．８５である、
請求項１１〜１３のいずれかに記載の液晶表示装置用偏光板。 The polyester film has a refractive index of 1.53 to 1.61 in a direction parallel to the transmission axis of the polarizing element.
The Re / Rth of the polyester film is 0.2 to 0.85.
The polarizing plate for a liquid crystal display device according to any one of claims 11 to 13. 前記偏光子の透過軸と平行な方向の、前記ポリエステルフィルムの屈折率が１．５３〜１．６０であり、
前記ポリエステルフィルムのリタデーションが４１６０ｎｍ以上である、
請求項１１〜１３のいずれかに記載の液晶表示装置用偏光板。 The polyester film has a refractive index of 1.53 to 1.60 in a direction parallel to the transmission axis of the polarizing element.
The retardation of the polyester film is 4160 nm or more.
The polarizing plate for a liquid crystal display device according to any one of claims 11 to 13. 前記ポリエステルフィルムのリタデーションが４１６０〜７８２０ｎｍである、
請求項１１〜１３のいずれかに記載の液晶表示装置用偏光板。 The retardation of the polyester film is 4160 to 7820 nm.
The polarizing plate for a liquid crystal display device according to any one of claims 11 to 13.
JP2021097235A 2015-07-16 2021-06-10 Liquid crystal display device and polarizing plate Active JP7331886B2 (en)

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