TWI242682B - Reflective mixed-mode twisted nematic liquid crystal display - Google Patents

Abstract

The invention relates to reflective mixed-mode twisted nematic liquid crystal displays. A direct-view display consists of a front substrate, a polarizer, liquid crystal and a rear substrate having a reflective coating. The twist angle, polarizer angle and retardation are optimised and fall within the following ranges: twist angle of between 67 DEG and 83 DEG; polariser angle of between 5 DEG and 21 DEG or between 95 DEG and 111 DEG; and retardation of between 0.18 and 0.28. An alternative configuration for the display is a projection display having a front substrate, a rear substrate with a reflective coating, liquid crystal between the substrates, a polarising beam splitter and a screen.

Description

12426821242682

【發明之應用領域】 本發明係有關於一種混合反射式扭轉向列型液晶顯示 &置’特別是有關於一種具有最佳扭轉角，偏振角及相位 遲延的混合反射式扭轉向列型液晶顯示裝置。 【發明之背景】 與穿透式液晶顯示裝置（transmissive-mode LCD) 相比’反射式液晶顯示裝置（reflective-mode LCD)具有 下列優點：消耗功率較低、在陽光下較易於閱讀，外形較 薄以及重量較輕。 具有月光戶、?、明（back-light illumination)的穿透 式液晶顯示裝置一般使用9 0。扭轉向列胞（t w i s t e d nematic cel 1)。扭轉向列胞係利用偏振旋轉 (polarization rotation)的方式產生光電效應 (electro-optic effect)，進入的線性偏振光[Application Field of the Invention] The present invention relates to a hybrid reflection type twisted nematic liquid crystal display & particularly, to a hybrid reflection type twisted nematic liquid crystal with optimal twist angle, polarization angle, and phase delay. Display device. [Background of the Invention] Compared with a transmissive-mode LCD, a 'reflective-mode LCD' has the following advantages: lower power consumption, easier to read in sunlight, and better appearance Thin and light. Transmissive liquid crystal display devices with moonlight, back light, and bright (back-light illumination) generally use 90. Twist nematic cells (t w i s t e d nematic cel 1). The twisted nematic cell line uses polarization rotation to generate an electro-optic effect, and the linearly polarized light entering

(linearly polarized light)依循 LC導引器（LC director)扭轉，因此當光穿過扭轉向列胞，其偏振軸 (polarization axis)約旋轉90。，光線由交叉偏振器 (crossed polarizer)發射 ° 光線通過交叉偏振器二次導致亮度（brightness)不 足’偏振為的尽度/丨於液晶胞（liquid crystal cell) 與反射鏡（reflecting mirror)之間而產生視差 (para 1 1 aX)則導致解析度太低。(linearly polarized light) is twisted in accordance with the LC director, so when light passes through the twisted nematic cell, its polarization axis is rotated by about 90. , The light is emitted by a crossed polarizer ° The light passes through the crossed polarizer twice, resulting in insufficient brightness (brightness), the degree of polarization / between the liquid crystal cell and the reflecting mirror Parallax (para 1 1 aX) results in too low resolution.

Shin Tson Wu專人發表的論文”Mixecj-M〇de TwistedPaper by Specialist Shin Tson Wu "Mixecj-M〇de Twisted

Nematic Liquid Crystal Cells f〇r Reflective Displays”（ 1 9 9 6年3月ii日所出版之期刊AppliedNematic Liquid Crystal Cells f〇r Reflective Displays "(Applied Journal published on March ii, 1996

1242682 _案號 88115168_年月日__ 、發明說明（2)1242682 _ case number 88115168_ year month day __, invention description (2)

Physics Letters第 6 8卷第 11期第 1455-145 7頁）中提出一 種改良的反射式顯示裝置，稱為「混合式扭轉向列胞」 (mixed-mode twisted nematic cell)。雖然此一裝置 具有改良亮度、消除視差（因於採用穿透式扭轉向列胞）等 優點，但該論文並未提供達到最佳性能的方法。 本發明可改良混合反射式扭轉向列型液晶顯示裝置， 使其達成最佳性能。 【發明之概述】 本發明提供一種混合反射式扭轉向列型液晶顯示裝 置，其扭轉角（twist angle)介於6 7°及83°之間，偏 振角（polarizer angle)介於5°與111° 之間，相位遲 延（retardation)介於 0·1 8與 0 · 2 8之間。 偏振角可包含：5°到21° 、95°到1 1 Γ 等數個範 圍。 在一實施例中，扭轉角介於7 6° ± 3° ，偏振角介於 1 8° + 3° ，而相位遲延介於0 . 2 5± 0 . 0 3。此實施例之最 佳組合為：扭轉角是7 6° ，偏振角是1 8° ，相位遲延是0 . 25〇 在另一實施例中，扭轉角介於70° ± 3° ，偏振角介 於8° ± 3° ，相位遲延介於0 . 2 1± 0 . 0 3。此實施例之最佳 組合為：扭轉角是7 0° ，偏振角是V ，相位遲延是 0· 2卜 在又一實施例中，扭轉角是8 0° ± 3° ，偏振角是1 6 。土 3° ，相位遲延是0 . 2 3± 0 . 0 3。此實施例之最佳組合 為：扭轉角是8 0° ，偏振角是1 6° ，相位遲延是0 . 2 3。Physics Letters, Vol. 68, No. 11, No. 1455-145, 7) proposes an improved reflective display device called a "mixed-mode twisted nematic cell". Although this device has the advantages of improving brightness and eliminating parallax (due to the use of penetrating twisted nematic cells), this paper does not provide a method to achieve the best performance. The invention can improve the hybrid reflection type twisted nematic liquid crystal display device to achieve the best performance. [Summary of the Invention] The present invention provides a hybrid reflection type twisted nematic liquid crystal display device. The twist angle is between 67 ° and 83 °, and the polarizer angle is between 5 ° and 111. Between °, the phase retardation is between 0.18 and 0.82. The polarization angle can include: 5 ° to 21 °, 95 ° to 1 1 Γ and several other ranges. In one embodiment, the twist angle is between 76 ° ± 3 °, the polarization angle is between 18 ° + 3 °, and the phase delay is between 0.25 ± 0.03. The best combination of this embodiment is: the twist angle is 76 °, the polarization angle is 18 °, and the phase delay is 0.25. In another embodiment, the twist angle is between 70 ° ± 3 °, and the polarization angle is At 8 ° ± 3 °, the phase delay is between 0.2 1 ± 0.03. The best combination of this embodiment is: the twist angle is 70 °, the polarization angle is V, and the phase delay is 0.2. In another embodiment, the twist angle is 80 ° ± 3 °, and the polarization angle is 16 . Soil 3 °, the phase delay is 0.2 3 ± 0. 03. The best combination of this embodiment is: the twist angle is 80 °, the polarization angle is 16 °, and the phase delay is 0.23.

第6頁 1242682 _案號88115168_年月日__ 五、發明說明（3) 偏振角可為98° 、108°或106°各加減3° 。 相位遲延可為0 . 2卜0 . 2 5或0 . 2 3。 前述裝置與偏振角減少9 0° (亦即偏振角8° 、1 8° 或1 6° )之旋轉偏振器具有類似或相同的光學性能。 此顯示裝置由偏振器、液晶胞以及反射裝置所組成， 可為一直視顯示器（direct-view display)。 此顯示裝置亦可由偏振分光器（polarizing beam s p 1 i 11 e r)、液晶胞以及反射裝置所組成，可為一投影顯 示器（projection display) 〇 以下將經由舉例並參考附圖以說明各實施例，以增進 對本發明之了解。 【發明之詳細說明】 混合反射式扭轉向列型液晶顯示裝置可應用於直視或 是投影配置，藉由調整液晶胞的參數，可取得標準白色及 標準黑色的液晶胞。相對於標準白色或黑色直視配置使用 單一偏振器，標準白色或黑色投影配置使用偏振分光器。 請參照「第1圖」標準黑色直視反射液晶顯示裝置的 不意圖。 直視顯示裝置不一定是標準黑色且使用偏振器。顯示 裝置包括前基底（front substrate) 1，單一偏振器 (single polarizer) 3，液晶（liquid crystal) 5及具 有反射塗層（reflective coating)的後基底（rear substrate) 7〇 偏振器3將入射光線性偏振。在關閉（〇 f f)狀態，液 晶5的扭轉（twist)與雙折射（birefringence)在反射Page 6 1242682 _Case No. 88115168_ Year Month Date__ V. Description of the invention (3) The polarization angle can be 98 °, 108 °, or 106 °, plus or minus 3 ° each. The phase delay may be 0.2 to 0.25 or 0.23. The aforementioned device has similar or identical optical performance to a rotating polarizer with a reduced polarization angle of 90 ° (ie, a polarization angle of 8 °, 18 °, or 16 °). The display device is composed of a polarizer, a liquid crystal cell, and a reflective device, and can be a direct-view display. This display device may also be composed of a polarizing beam splitter (polarizing beam sp 1 i 11 er), a liquid crystal cell, and a reflective device, and may be a projection display. The embodiments will be described below by way of examples and with reference to the drawings. To improve the understanding of the present invention. [Detailed description of the invention] The hybrid reflection type twisted nematic liquid crystal display device can be applied to direct-view or projection configuration. By adjusting the parameters of the liquid crystal cell, standard white and standard black liquid crystal cells can be obtained. Compared to the standard white or black direct-view configuration, which uses a single polarizer, the standard white or black projection configuration uses a polarizing beam splitter. Please refer to "Figure 1" for the intention of a standard black direct-view reflective liquid crystal display device. The direct-view display device does not have to be standard black and uses a polarizer. The display device includes a front substrate 1, a single polarizer 3, a liquid crystal 5, and a rear substrate with a reflective coating. The polarizer 3 will enter incident light. Sexual polarization. In the off (f f) state, the twist and birefringence of liquid crystal 5 are reflected.

1242682 案號88115168 年 曰 修正 五、發明說明（4) 光的偏振狀態中產生9 0°變化。偏振器將反射光阻擋而產 生黑暗影像（dark image)。在開啟（on)狀態，入射光 的偏振狀態不變，反射光可通過偏振器而產生明亮影像 (br i gh t i mage)。第1圖顯示關閉及開啟狀態。 請參照「第2圖」標準白色投影反射液晶顯示裝置的 示意圖。1242682 Case No. 88115168 Revision V. Description of the invention (4) A 90 ° change occurs in the polarization state of the light. The polarizer blocks the reflected light and creates a dark image. In the on state, the polarization of the incident light does not change, and the reflected light can pass through the polarizer to produce a bright image (br i gh t i mage). Figure 1 shows the closed and open states. Please refer to "Figure 2" for a schematic diagram of a standard white projection reflective liquid crystal display device.

與第1圖的配置相比，用偏振分光器9取代偏振器1， 投影顯示裝置不一定是標準白色且使用偏振分光器。液晶 導引器（liquid crystal director)相對於偏振分光器9 的角度與相對於第1圖偏振器3的角度相同。經由包含偏 振分光器9的正方體鲮鏡偏振器（cube prism polarizer )反射，即可將入射光線性偏振且導引至液晶5 (與第1 圖液晶5的配置相同）。後基底具有反射塗層可將光反射 (與第1圖後基底7的配置相同）。在關閉狀態，反射光 通過偏振分光器，在螢幕1 1上產生明亮影像。偏振分光器 在入射光方向將光反射，在螢幕1 1上產生黑暗影像。第2 圖顯示關閉及開啟狀態。 該注意偏振分光器的標準白色模式也可用在直視應 用。Compared with the configuration of FIG. 1, instead of the polarizer 1 with the polarizing beam splitter 9, the projection display device is not necessarily a standard white and uses a polarizing beam splitter. The angle of the liquid crystal director with respect to the polarization beam splitter 9 is the same as the angle with respect to the polarizer 3 in FIG. 1. By reflecting from a cube prism polarizer including the polarization beam splitter 9, the incident light can be polarized and guided to the liquid crystal 5 (the same configuration as the liquid crystal 5 in Fig. 1). The rear substrate has a reflective coating to reflect light (same configuration as the rear substrate 7 in Figure 1). In the off state, the reflected light passes through the polarizing beam splitter to produce a bright image on the screen 11. The polarizing beam splitter reflects the light in the direction of the incident light and produces a dark image on the screen 1 1. Figure 2 shows the closed and open states. Note that the standard white mode of the polarizing beamsplitter can also be used in direct-view applications.

以下係以標準白色（即關閉狀態中的白色）投影顯示裝 置進行說明。 在標準白色投影應用中，關閉狀態的亮度是依液晶的 雙折射而定，因此必須準確調整胞參數。 本實施例可達到（1 )最大對比（m a X i m u m c ο n t r a s t );(2 )對不同波長的一致響應；以及（3 )對於胞間隙變化The following description is based on the standard white (ie, white in the off state) projection display device. In standard white projection applications, the brightness in the off state depends on the birefringence of the liquid crystal, so the cell parameters must be adjusted accurately. This embodiment can achieve (1) the maximum contrast (m a X i m u m c ο n t r a s t); (2) a consistent response to different wavelengths; and (3) the change in intercellular space

第8頁 1242682 _案號 88115168_年月日__ 五、發明說明（5) (cell gap variation)的響應不靈敏（insensitivity )。 在直視及投影配置中，胞對於不同波長的一致響應對 色彩序列應用是重要的，因為三種色彩的信號會及時多 工。色彩序列應用需要單一廣帶胞（single broad band cell) 〇Page 8 1242682 _Case No. 88115168_Year Month Day__ V. Description of the Invention (5) The response of the cell gap variation is not sensitive. In direct-view and projection configurations, the consistent response of the cell to different wavelengths is important for color sequence applications, as the three color signals are multiplexed in time. Color sequence applications require a single broad band cell.

液晶顯示裝置的相位遲延定義為胞間隙及液晶雙折射 的相乘積。習知混合反射式扭轉向列型液晶顯示裝置的性 能對於胞間隙變化極為靈敏。本發明可提供對於胞間隙變 化的不靈敏度的實施例。 「第3圖」顯示混合反射式扭轉向列型液晶顯示裝置 的扭轉角及偏振角的定義。 扭轉角（t w i s t ang 1 e)是混合式扭轉向列胞 (mixed-mode twisted nematic cell)的前後表面對準 方向之間的差距。偏振角（p ο 1 a r i z e r a n g 1 e)是混合式 扭轉向列胞前表面對準方向與偏振軸之間的角度。 針對相位遲延變化響應的不靈敏度設計一種性能測量 方式。允許相位遲延在± 0 . 0 1的範圍中變化，並可取得兩 個響應曲線間的積分差。令R r ( λ )是相位遲延r時在波長 λ測量到LCD的反射度，我們定義 為關閉狀態的亮度測量。在一特殊相位遲延值，光譜性能 對於相位遲延變化的靈敏度定義為 Ω (r)=|Φ (r+0. 01)-Φ (r-〇. 01)| 在關閉開啟轉換模擬中，以具有單一理想偏振器的反The phase delay of a liquid crystal display device is defined as the product of the cell gap and liquid crystal birefringence. The performance of the conventional hybrid reflective twisted nematic liquid crystal display device is extremely sensitive to changes in intercellular space. The invention may provide examples of insensitivity to changes in intercellular space. "Figure 3" shows the definitions of the twist angle and polarization angle of the hybrid reflection type twisted nematic liquid crystal display device. The twist angle (t w i s t ang 1 e) is the difference between the alignment directions of the front and rear surfaces of the mixed-mode twisted nematic cell. The polarization angle (p ο 1 a r i z e r a n g 1 e) is the angle between the alignment direction of the front surface of the twisted nematic cell and the polarization axis. Design a performance measurement method for the insensitivity of the phase delay change response. The phase delay is allowed to vary in the range of ± 0.01, and the integral difference between the two response curves can be obtained. Let R r (λ) be the reflectance of the LCD measured at the wavelength λ with the phase delay r, which we define as the brightness measurement in the off state. At a particular phase delay value, the sensitivity of the spectral performance to changes in phase delay is defined as Ω (r) = | Φ (r + 0. 01) -Φ (r-〇. 01) | Reflection of a single ideal polarizer

第9頁 1242682 _案號 88115168_年月日__ 五、發明說明（6) 射模式模擬偏振分光器，產生光學反相（ο p t i c a 1 i n v e r s i ο η)(黑暗變成明亮，或明亮變成黑暗）。 已提出的三種配置，具有良好的關閉狀態亮度及開啟 狀態黑暗，對於相位遲延變化不靈敏，以及對於頻率響應 的均勻度。它們是： (1) 76° ± 2°多重扭轉角，18° ± 2°偏振角，及 0 · 2 5± 0 . 0 2相位遲延（簡稱為7 6，1 8，0 · 2 5模式）。 (2) 7 0° ± 2°多重扭轉角，8° ± 2°偏振角，及0. 21 ± 0 · 0 2相位遲延（簡稱為7 0，8，0 · 2 1模式）。 (3) 8 0° ± 2°多重扭轉角，16° ± 2°偏振角，及 0 · 2 3± 0 · 0 2相位遲延（簡稱為8 0，1 6，0 · 2 3模式）。 76，1 8，0· 2 5模式（1 ) 在7 6°扭轉角，1 8°偏振角模式中，模擬具不同相位 遲延的胞（0.20-0.30，0.0 1步距）。「第4圖」「第5 圖」分別顯不Φ ( r)及|Φ (Γ + 0.01)-Φ (r-0.01)|。由第4 圖與第5圖可知，Φ (r)的極大值及|Φ (γ + 0.01)-Φ (r-0. 0 1 ) I的極小值發生在相位遲延值0 . 2 5。根據上述定義，此 相位遲延值對應於關閉狀態之極大亮度，而極小靈敏度對 應於相位遲延變化。「第6圖」顯示7 6，1 8，0 . 2 5模式下 波長在常態反射下的圖形。「第7圖」顯示3個波長 450nm、550nm、650nm下關閉開啟的轉換曲線◦注意第7 圖是光學反相。 7 0，8，0 · 2 1模式（2 ) 「第8圖」「第9圖」分別顯示相位遲延值0. 1 r S 0· 25時的 Φ (ι〇及 |Φ U + 0· 01 )-Φ (r-0. 01 )卜可發現 ΦPage 9 1242682 _ Case No. 88115168 _ year month day__ V. Description of the invention (6) The radiation mode simulates a polarizing beam splitter, which produces optical inversion (ο ptica 1 inversi ο η) (darkness becomes bright, or brightness becomes dark) . Three configurations have been proposed with good off-state brightness and on-state darkness, insensitivity to phase delay changes, and uniformity to frequency response. They are: (1) 76 ° ± 2 ° multiple twist angles, 18 ° ± 2 ° polarization angles, and 0 · 2 5 ± 0. 02 phase delay (abbreviated as 7 6, 18, 0 · 2 5 modes) . (2) 7 0 ° ± 2 ° multiple twist angle, 8 ° ± 2 ° polarization angle, and 0.21 ± 0 · 0 2 phase delay (abbreviated as 7 0, 8, 0 · 21 mode). (3) 8 0 ° ± 2 ° multiple twist angle, 16 ° ± 2 ° polarization angle, and 0 · 2 3 ± 0 · 0 2 phase delay (abbreviated as 8 0, 16, 0 · 2 3 mode). 76, 18, 0 · 2 5 mode (1) Simulate cells with different phase delays (0.20-0.30, 0.0 1 step) in 76 ° twist angle, 18 ° polarization angle mode. "Figure 4" and "Figure 5" show Φ (r) and | Φ (Γ + 0.01) -Φ (r-0.01) | respectively. From Figures 4 and 5, it can be seen that the maximum value of Φ (r) and the minimum value of | Φ (γ + 0.01) -Φ (r-0. 0 1) I occur at the phase delay value 0.25. According to the above definition, this phase delay value corresponds to the maximum brightness in the off state, while the minimum sensitivity corresponds to the phase delay change. "Figure 6" shows the graph of the wavelength under normal reflection in the mode of 7, 6, 8, 0.2. "Figure 7" shows the conversion curves of 3 wavelengths at 450nm, 550nm, and 650nm. Note that Figure 7 shows the optical inversion. 7 0, 8, 0 · 2 1 Mode (2) "Figure 8" and "Figure 9" show the phase delay values of 0.1 (r0 and | Φ U + 0 · 01 at 0.1 r S 0 · 25, respectively ) -Φ (r-0. 01)

第10頁 1242682 __案號 88115168_年月日__ 五、發明說明（7) (r)的極大值及ΙΦ (r + Ο.ΟΙ)-Φ (r-0.01)|的極小值發生在 相位遲延值0 · 2 1。根據我們的標準，此數值對應於關閉狀 態最大亮度與相位遲延變化之最小靈敏度。 「第1 0圖」顯示靜止狀態（quiescent state)下 波長相對於反射的圖形。 「第1 1圖」顯示關閉開啟轉換曲線，注意第1 1圖 是光學反相。 80，16，0· 23盤式（3) 「第1 2」「1 3圖」分別顯示相位遲延值從〇. 2 0到 0 · 3 0時的 Φ ( r )及 I Φ ( r + 0 · 0 1 ) -Φ ( r - 0 · 0 1 )卜我們發現 φ (r)的極大值及|Φ (γ + 0·01)-Φ (r-0.01)|的極小值發生在 相位遲延值〇 · 2 3。根據我們的標準，此數值對應於關閉狀 態最大亮度與相位遲延變化之最小靈敏度。 「第1 4圖」顯示靜悲狀恶下波長相對於反射的圖 形。 「第1 5圖」顯示關閉開啟轉換曲線，注意第1 5圖 是光學反相。 θ 在（1)到（3 )各模式中’多重扭轉角、偏振角及相位 遲延的均可改變，範圍分別是土 3° ，土 3。及土 〇. 〇 3，且 仍能提供極佳效能。當範圍越大，背景色彩可能出現在錢頁 示裝置上，一些應用可容許此現象。 # ' 电較_範例 以下是三個常用現存多重扭轉角操作模式： (4 ) 4 5。多重扭轉角’ 2 2 · 5°偏振角，及〇 · 3 2相位 延（簡稱4 5，2 2 · 5，0 . 3 2模式）。Page 10 1242682 __Case No 88115168_Year Month Date__ V. The maximum value of the invention description (7) (r) and the minimum value of Φ (r + Ο.ΟΙ) -Φ (r-0.01) | Phase delay value 0 · 2 1. According to our standards, this value corresponds to the minimum sensitivity of the maximum brightness and phase delay variation in the off state. "Figure 10" shows the graph of wavelength versus reflection in the quiescent state. "Figure 11" shows the transition curve of turning on and off. Note that Figure 11 is the optical inversion. 80, 16, 0 · 23 disc type (3) "12th" "13th figure" shows Φ (r) and I Φ (r + 0) when the phase delay value is from 0.2 to 0 · 30 · 0 1) -Φ (r-0 · 0 1) We find that the maximum value of φ (r) and the minimum value of Φ (γ + 0 · 01) -Φ (r-0.01) | occur at the phase delay value 〇 · 2 3. According to our standards, this value corresponds to the minimum sensitivity of the maximum brightness and phase delay variation in the off state. "Figure 14" shows the graph of wavelength vs. reflection in a quiet and sad state. "Figure 15" shows the switch curve of turning on and off. Note that Figure 15 is the optical inversion. θ In each of the modes (1) to (3), the multiple twist angle, polarization angle, and phase delay can be changed, and the ranges are soil 3 ° and soil 3, respectively. And soil 〇 〇 3, and still can provide excellent performance. When the range is larger, the background color may appear on the money display device, and some applications may tolerate this phenomenon. # '电 比 _Example Here are three commonly used existing multiple twist angle operation modes: (4) 4 5. The multiple twist angle is a polarization angle of 2 2 · 5 °, and a phase delay of 0.32 (referred to as 4 5, 2 2 · 5, 0.3 2 mode).

1242682 案號88115168 年 月 曰 修正 五、發明說明（8) (5 ) 6 5°多重扭轉角，3 0°偏振角，及0 . 3 5相位遲延 (簡稱 60，30，0· 35模式）。 (6 ) 9 0°多重扭轉角，2 0°偏振角，及0 . 2 4相位遲延 (簡稱 90，20，0. 2 4模式）。 「第1 6圖」是根據本發明三種模式1 - 3以及比較範 例三種模式4 - 6，關閉狀態波長相對於常態反射的圖形。1242682 Case No. 88115168 Date: Amendment V. Description of the invention (8) (5) 65 ° multiple twist angle, 30 ° polarization angle, and 0.35 phase retardation (referred to as 60, 30, 0.35 mode). (6) 90 ° multiple twist angle, 20 ° polarization angle, and 0.24 phase delay (90, 20, 0.2 mode for short). "Figure 16" is a graph of the off-state wavelength versus normal reflection according to the three modes 1-3 of the present invention and the three modes 4-6 of the comparative example.

在第1 6圖中，模式1的特徵是以圓圈0表示，模式2 的特徵是以實線-表示，模式3的特徵是以虛線...表示， 模式4的特徵是以星號*表示，模式5的特徵是以交叉*表 示，而模式6的特徵是以加號+表示。 對於不同波長（廣帶）及亮度的高一致色響應而言，模 式1到3比模式4到6優越。模式5的反射度約在5 5 0 nm到達峰 值，但是色散很嚴重。模式4與6則亮度不足。 下表顯示關閉狀態的Φ及Ω測量，就相位遲延變化的 不靈敏而言，模式1到3比模式4到6優越。 「第1 7〜1 9圖」顯示模式4到6的關閉開啟轉換， 由此可看出模式4到6在關閉狀態下的亮度不足，模式5則 是色散。In Figure 16, the features of mode 1 are represented by circle 0, the features of mode 2 are represented by solid lines-the features of mode 3 are represented by dashed lines ..., the features of mode 4 are represented by asterisks *, Pattern 5 is characterized by a cross *, while Pattern 6 is characterized by a plus sign +. For highly consistent color response at different wavelengths (wideband) and brightness, Modes 1 to 3 are superior to Modes 4 to 6. The reflectance of mode 5 reaches its peak at about 5 50 nm, but the dispersion is severe. Modes 4 and 6 have insufficient brightness. The following table shows the measurements of Φ and Ω in the off state. In terms of the insensitivity of the phase delay change, modes 1 to 3 are superior to modes 4 to 6. "Figures 17 to 19" show the transitions from off to on for modes 4 to 6, and it can be seen that the modes 4 to 6 have insufficient brightness in the off state, and mode 5 is dispersion.

根據本發明的模式1到3及比較範例的模式4到6中使用Used in modes 1 to 3 of the present invention and modes 4 to 6 of the comparative example

第12頁 1242682 _案號88115168_年月日__ 五、發明說明（9) 的波長是 450nm，550n m及 6 5 0 n m。 本發明特別適用於直視或投影應用中的反射式微顯示 裝置。微顯示裝置是小型高解析度的顯示裝置，其詳細内 容可到網站WWW. MICRODISPLAYWEB. COM上查詢。利用本發 明的特殊微顯示裝置是根據巨大矽晶圓上有包含反射液晶 層的主動矩陣。Page 12 1242682 _Case No. 88115168_Year Month Day__ V. Explanation of the invention (9) The wavelengths are 450nm, 550n m and 6 50 0 m. The invention is particularly suitable for reflective micro-display devices in direct-view or projection applications. The micro display device is a small, high-resolution display device, and its details can be found on the website WWW. MICRODISPLAYWEB. COM. The special microdisplay device using the present invention is based on an active matrix containing a reflective liquid crystal layer on a giant silicon wafer.

雖然本發明已以一較佳實施例揭露如上，然其並非用 以限定本發明，任何熟習此技藝者，在不脫離本發明之精 神和範圍内，當可作些許之更動與潤飾，因此本發明之保 護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes and retouch without departing from the spirit and scope of the present invention. The scope of protection of the invention shall be determined by the scope of the attached patent application.

第13頁 1242682 _案號 88115168_年月日_修正 圖式簡單說明 圖圖 意意 示示 /ον vfTT Αρ 置置 裝裝 示示 顯顯 晶晶 液液 反反 視影 直投 色色 黑白 準準 標標 是是 圖圖 r-H /ΓΑ-弟Λ-Λ-弟 轉 扭 的 置 裝 示 顯 晶 液 型 列 向 轉 扭 式 角 振 偏 ο 6 7 為 角 轉 扭 在 例 施 實- 射·，第 反圖明 合意發 混示本 是的是 圖角圖 3振4 第偏第 及 角 8 IX 為 遲 位 相 合本 整是 之圖 長5 波第 有 所 於 遲 對 位 s BM 才 才 延 於 遲 對 位 相 相 延 的 遲 置 位 裝·，相 示中之 顯其例 ，，施 時形實 5 2 圖一 ο的第 為射明 延反發 圖 的 射 反 於 對 相 長 波 之 例 施 實 ;一 形第 圖明 的發 度本 敏是 靈圖 化6 變第 的 延 形 換 轉 啟 開 Βπ、 關 的 時 色 三 在 例 施 實- 第 明 發 本 是 圖 7 第 線 曲 第 明 發 本 是 圖 8 第 是 角 轉 扭 在 例 施 實 角 振 〇 8 是 是 延 遲 位 相 時 於 對 相 延 遲 位 相 的 置 裝 示 顯 遲 位 相 於 對 相 延 遲 位 相 之 例 •，施 形實 圖二 的第 射明 反發 合本 整是 之圖 長9 波第 有 所 圖 的 射 反 於 對 相 長 波 之 例 施 實二 •，第 形明 圖發 的本 度是 敏圖 靈ο 化1 變第 的 延 τ—I ·， τ-Η 第線第 •， 曲 形 換 轉 啟 開 QHM 關 的 時 色 三 在 例 施 實二 第 明 本 是 圖 本 是 圖 2 ο ο 8 ο 6 1 丄 是 角 合 整 之 長 波 有 所 於 振對顯 偏相在 ，延例 遲施 位實 是相三 角的第 轉置明 扭裝發 在示本 例顯據 施，根 實時形 3 三2圖 第ο的 明是射 發延反 遲 位 相Page 13 1242682 _Case No. 88115168_ Year Month Date _ Correction of the diagram, a simple explanation of the diagram, / ον vfTT Αρ installation, display, display, crystal liquid, liquid, liquid, liquid, liquid, liquid The installation of the figure rH / ΓΑ- brother Λ-Λ- brother torsion shows the liquid crystal columnar torsional angular vibration deviation ο 6 7 is the implementation of the angular torsion in the example-shot ·, the second figure clearly agrees It is shown that the picture is the corner of the picture, the third is the fourth, and the angle is 8 IX is the late coincidence. The whole picture length is 5 waves. The delay is s BM and the delay is delayed. The delayed positioning device, the obvious example in the phase display, Shi Shixing 5 2 Figure 1 ο The first shot of the reverse delay shot is opposite to the example of the phase wave; The degree of Ming Ben's hair is a continuation of the change of the magical figure 6, which is turned on and turned on, βπ, and off, and the time and color are three examples.-The first Mingfa is shown in Figure 7 In the example, the angular twist is applied to the angular vibration. The installation of the delayed phase shows an example where the delayed phase is opposite to the opposite phase. Example 2 •, the essence of the shape map is Minturing ο Hua1 change the extension of τ—I ·, τ-Η the second line •, the curve changes the time to turn QHM off In the example of implementation, the second example is the figure, the figure is the figure 2. ο ο 8 ο 6 1 丄 is the long wave of the angle integration, and the vibration is obviously out of phase. The delayed implementation is the first transpose of the phase triangle. The apparent twisting of the hair is shown in this example. Based on the shape shown in Figure 3 and Figure 2, the delay is the delayed phase.

第14頁 1242682 _案號 88115168_年月日__ 圖式簡單說明 示裝置的所有波長，相位遲延相對於整合反射的圖形，其 中扭轉角是8 0° ，偏振角是1 6° ，而相位遲延是0 . 2 3 ; 第1 3圖是本發明第三實施例之相位遲延相對於相位 遲延的變化靈敏度的圖形； 第1 4圖是本發明第三實施例之波長相對於反射的圖 形； 第1 5圖是本發明第三實施例在三色時的關閉開啟轉 換曲線； 第1 6圖是本發明第一，第二，第三實施例在三個比 較例，關閉狀態波長相對於常態化反射的圖形； 第1 7圖是本發明第一比較例在三色時的關閉開啟轉 換曲線； 第1 8圖是本發明第二比較例在三色時的關閉開啟轉 換曲線；以及 第1 9圖是本發明第三比較例在三色時的關閉開啟轉 換曲線。 【圖示之符號說明】 1 前基底 3 偏振器 5 液晶 7 後基底 9 偏振分光器 11 螢幕Page 141242682 _Case No. 88115168_Year_Month__ The diagram briefly illustrates the graph of phase retardation versus integrated reflection for all wavelengths of the device, where the twist angle is 80 °, the polarization angle is 16 °, and the phase The delay is 0.2 3; FIG. 13 is a graph of the sensitivity of the phase delay to the variation of the phase delay in the third embodiment of the present invention; FIG. 14 is a graph of the wavelength versus the reflection in the third embodiment of the present invention; Fig. 15 is a close-on transition curve of the third embodiment of the present invention at three colors; Fig. 16 is a first, second, and third embodiment of the present invention in three comparative examples. The wavelength of the off state is relative to the normal state. Fig. 17 is a graph showing the close-open transition curve of the first comparative example of the present invention at three colors; Fig. 18 is a graph showing the close-open transition curve of the second comparative example of the present invention at three colors; and Fig. 1 Fig. 9 is a close-open transition curve of the third comparative example of the present invention at three colors. [Illustrated Symbols] 1 Front substrate 3 Polarizer 5 Liquid crystal 7 Rear substrate 9 Polarizing beam splitter 11 Screen

Claims (1)

1242682 案號 88115168 A_η 曰 修正 六、申請專利範圍 6、如申請專 顯示裝置，其 0.25。 7 種混合 偏振器、一扭 於67°與73° 與該偏振為的 該扭轉向列液 乘積，其值介 8、 如申請專 顯示裝置，其 0. 2卜 9、 一種混合 偏振器、一扭 於77°與83° 與該偏振器的 該扭轉向列液 乘積，其值介 1 0、如申請 晶顯示裝置， 為 0· 23。 利範圍第 扭轉角為 反射式扭 轉向列液 之間’該 偏振軸之 晶胞之相 於0 . 1 8與 利範圍第 扭轉角為 反射式扭 轉向列液 之間’該 偏振轴之 晶胞之相 於0 . 2 0與 專利範圍 其扭轉角 5項之混合反射式扭轉向列型液晶 7 6° ，偏振角為1 0 8 ° ，相位遲延為 轉向列型液晶顯示裝置，包含：一 晶胞以及一反射裝置，其扭轉角介 扭轉向列液晶胞之前表面的排列方向 間的偏振角介於95°與101°之間， 位遲延為胞間隙及液晶雙折射的相 0 . 2 4之間。 7項之混合反射式扭轉向列型液晶 7 0。，偏振角為9 8° ，相位遲延為 轉向列型液晶顯示裝置，包含：一 晶胞以及一反射裝置，其扭轉角介 扭轉向列液晶胞之前表面的排列方向 間的偏振角介於1 0 3°與1 0 9°之間， 位遲延為胞間隙及液晶雙折射的相 0 . 2 6之間。 第9項之混合反射式扭轉向列型液 為8 0° ，偏振角為1 0 6° ，相位遲延1242682 Case No. 88115168 A_η said Amendment 6. Scope of patent application 6. If applying for a special display device, its 0.25. 7 kinds of hybrid polarizers, one twisted at 67 ° and 73 ° and the twisted nematic liquid product of the polarization behavior, the value of which is 8. If applying for a special display device, its 0.2b, a hybrid polarizer, a The product of twisting at 77 ° and 83 ° with the twisted nematic liquid of the polarizer, the value of which is 10, and if it is a crystal display device, it is 0.23. The twist range angle of the Lee range is between the reflection-type twisted nematic liquid and the phase unit of the polarization axis is between 0.1 8 and the twist range angle of the Lee range is between the reflection-type twisted nematic liquid. The phase is 0.26 and the patent range is a hybrid reflection twisted nematic liquid crystal with a twist angle of 5 items, 76 °, a polarization angle of 108 °, and a phase delay of a steering nematic liquid crystal display device, including: one crystal Cell and a reflecting device, whose twist angle mediates the polarization angle between the alignment directions of the front surface of the nematic liquid crystal cell between 95 ° and 101 °, and the bit delay is the phase of the cell gap and liquid crystal birefringence of 0.24 between. 7 items of hybrid reflective twisted nematic liquid crystal 70. , The polarization angle is 98 °, and the phase delay is a steering nematic liquid crystal display device, which includes: a unit cell and a reflection device, the torsion angle of which twists the polarization direction between the alignment directions of the front surface of the nematic liquid crystal cell is between 10 Between 3 ° and 10 °, the bit delay is between the cell gap and the liquid crystal birefringence phase of 0.26. The mixed reflection type twisted nematic liquid of item 9 is 80 °, the polarization angle is 106 °, and the phase delay is 第17頁Page 17