TW544537B - Liquid crystal device - Google Patents
Liquid crystal device Download PDFInfo
- Publication number
- TW544537B TW544537B TW087113831A TW87113831A TW544537B TW 544537 B TW544537 B TW 544537B TW 087113831 A TW087113831 A TW 087113831A TW 87113831 A TW87113831 A TW 87113831A TW 544537 B TW544537 B TW 544537B
- Authority
- TW
- Taiwan
- Prior art keywords
- item
- patent application
- liquid crystal
- scope
- pulse
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3622—Control of matrices with row and column drivers using a passive matrix
- G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
- G09G3/3637—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with intermediate tones displayed by domain size control
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0469—Details of the physics of pixel operation
- G09G2300/0478—Details of the physics of pixel operation related to liquid crystal pixels
- G09G2300/0482—Use of memory effects in nematic liquid crystals
- G09G2300/0486—Cholesteric liquid crystals, including chiral-nematic liquid crystals, with transitions between focal conic, planar, and homeotropic states
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
- G09G2310/061—Details of flat display driving waveforms for resetting or blanking
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
- G09G2310/065—Waveforms comprising zero voltage phase or pause
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
)44537 五 、發明説明( A7 B7 技術範轉 本發明有關—種液晶裝置。 背景技藝 本發明所用之”扭轉”係意指— 液晶定向子缺士士、么六 似履叩構件千面心角度, 雜”、:邊角度自構件之-表面旋轉至另-表面。 2,9%Γ (BTN)效應係揭示於EP ° 018刚、US 4 等5及新禎您雙穩性液晶扭轉構件",D.W. Berreman 附圖中、二PPl· PhyS” 1981,第 52 册 52(4),第 3032 頁。 距二説明操作之BTN模式的簡易實例。構件中螺 二貝A構件間隙之兩倍而具有行或反向平行取向之膽固 ,予轉向列)材料採用扭轉18qx:之原始狀態。於反向平 仃:正中,該180。(:扭轉狀態具有開展之缺點。是故,除 原始穩^狀態外,會有其他兩個介穩狀態,其不開展但扭 轉度4c不佳,即〇至360。。此等介穩狀態可較18〇。更迅速 地產生,而備論用於BTN模式之兩狀態。於交又或正交偏 光板間之薄構件中,360。扭轉狀態顯示黑色,而光軸相對 於偏光板取向成45。之〇。扭轉狀態顯示白色。 穩定之,,扭轉-開展”狀態於具有反向平行對正層2及3之 液晶構件中以1表示。將原始重設脈衝4施加於電極(未示 )兩哪,该電極間放置液晶5及對正層2及3。該重設脈衝 4具有足以轉換成以6説明之各向同性狀態之振幅及持續 時間,其中该層(遠離對正層2及3之中間'區段)中之液晶分 子定向於與構件表面垂直之方向,如例如分子7所説明。 隨後於該電極上施加兩類選擇性定址脈衝8中之一種, -4 本紙張尺度適州中國ϋϋ 一( ('NS )—Λ4規桔(2 K^97^iy (讀先閱讀背面t注意事 1· >項再填. 裝--- 寫本頁) 、11 544537 A7 B7 五、發明説明(2 ) 一 — 以選擇所需之裝置狀態。一種選擇性定址酿衝使各向同性 狀態6’切換成於9所説明之介穩性黑色狀態,其中液晶具 有360。扭轉。此係最大衰減或黑色狀態,其中該構件係放 置於正父偏光板之間。其他類型之定址脈衝8使液晶自各 向同性狀態6切換成介穩性白色狀態10,其中扭轉0。,而 構件顯示最小衰減或具有正交偏光板之白色。前述先前技 感藉著自原始重設脈衝4迅速或緩緩降低電壓而提供選擇 性足址脈衝8。然而,亦可使用其他波型。例如,Ep 〇 569 029揭示一種定址BTN液晶裝置(LCD)之方法,其係根據原 始重没脈衝選擇具有不同電壓之脈衝。jp Η7_248485揭示 一種提供較快速定址之技術,其係於該原始重設脈衝與該 走址脈衝之間***預設脈衝。 ΕΡ 0 579 247揭示一種使偏光板及分析器位置最佳化之 技術,其於BTN LCD中提供最佳對比。) 44537 V. Description of the invention (A7 B7 technology transfers the invention to a type of liquid crystal device. BACKGROUND ART The term "twist" used in the invention means-the liquid crystal directional element lacks taxis, and the angle of the centroid facet of the track-like member. ", Miscellaneous" ,: The side angle is rotated from the-surface to the other surface of the component. The 2,9% Γ (BTN) effect is disclosed in EP ° 018, US 4, etc. 5 and your new bi-stable liquid crystal twisting component ", DW Berreman in the drawing, II PPl · PhyS "1981, Vol. 52, Vol. 52 (4), p. 3032. A simple example of the BTN mode from the second explanation of the operation. Spiral A in the component is twice the component clearance and Bold solids with row or anti-parallel orientation, to the steering column) The material adopts the original state of torsion 18qx :. In reverse level 仃: in the middle, the 180. (: The twisted state has the disadvantage of being developed. Therefore, in addition to the original stable state, there will be two other metastable states, which are not developed but the twist degree is 4c, which is 0 to 360. These metastable states can be It is faster than 18. It is produced more quickly, and it is used in the two states of the BTN mode. In the thin member between the crossed or orthogonal polarizers, 360. The twisted state shows black, and the optical axis is oriented relative to the polarizer. 45. 〇. The twisted state shows white. Stable, twisted-unfolded state is represented by 1 in the liquid crystal member with antiparallel alignment layers 2 and 3. The original reset pulse 4 is applied to the electrode (not shown). ) Whichever, the liquid crystal 5 and the alignment layers 2 and 3 are placed between the electrodes. The reset pulse 4 has an amplitude and duration sufficient to convert to an isotropic state described with 6, where the layer (away from the alignment layer 2 And the middle 'section of 3') the liquid crystal molecules are oriented in a direction perpendicular to the surface of the component, as illustrated by, for example, molecule 7. Then one of two types of selective addressing pulses 8 is applied to the electrode, -4 paper size Shizhou China ϋϋ 一 (('NS) —Λ4 gauge orange (2 K ^ 9 7 ^ iy (read the first note on the back t, and then fill in the items. Install --- write this page), 11 544537 A7 B7 V. Description of the invention (2) One-to select the required device state. One Selective addressing causes the isotropic state 6 'to switch to the metastable black state as described in 9, where the liquid crystal has 360. Twist. This is the maximum attenuation or black state, where the component is placed on the positive polarizer The other type of addressing pulse 8 causes the liquid crystal to switch from the isotropic state 6 to the metastable white state 10, where it is reversed by 0, and the component shows minimal attenuation or white with orthogonal polarizers. Selective address pulses 8 are provided quickly or slowly from the original reset pulse 4. However, other waveforms can also be used. For example, Ep 0569 029 discloses a method for addressing a BTN liquid crystal device (LCD), which is Select pulses with different voltages based on the original reset pulse. Jp Η7_248485 discloses a technique for providing faster addressing by inserting a preset pulse between the original reset pulse and the address pulse. ΕΡ 0 579 247 And the polarizing plate so that one kind of optimization techniques analyzer position, which provides the best contrast in BTN LCD.
π由被動卩奉列定址驅動之雙穩性扭轉向列(BTN)LCD” Tπ Bistable Twisted Nematic (BTN) LCD Driven by Passive Column Addressing ”T
Nanaka 等人,proceedings of Asia Di 開展 1995 ,第 259 頁,揭示一種被動定址之黑白BTN面板。 E P 0 6 1 3 1 16揭示一種用以提供短定址時間之技術,其 係於選擇性短脈衝之重設脈衝後之時間内使該位置最佳化 。此係説明於附圖之圖2中。BTN LCD係排列成圖素(像 元)之矩型陣列,以形成一面板,各列像元共用之列電極接 收選通脈衝波型,而各行像元所共用之行電極接收數據信 號。典型選通脈衝或列波型係説明於i丨,典型數據或行波 型係說明於12 ’液晶層兩端所形成之電|係説明於13, -5- 本紙張尺度適用中國國家標净((、NS)A4規格(210X 297公釐) (讀先閱讀背面之注意事 J# _項再填. 裝-- 寫本K ) 、11Nanaka et al., Proceedings of Asia Di, 1995, p. 259, reveal a passively addressed black and white BTN panel. EP 0 6 1 3 1 16 discloses a technique for providing a short addressing time, which optimizes the position within the time after the reset pulse of the selective short pulse. This is illustrated in Figure 2 of the accompanying drawings. The BTN LCD is arranged in a rectangular array of pixels (pixels) to form a panel. The column electrodes common to each column of pixels receive the gate pulse pattern, and the row electrodes common to each row of pixels receive data signals. The typical strobe or column wave pattern is described in i 丨, the typical data or traveling wave pattern is described in the electricity formed at the ends of the 12 'liquid crystal layer. | It is described in 13, -5- This paper size applies to China's national standard net ((, NS) A4 specifications (210X 297 mm) (read the cautions on the back J # _ item before filling. Pack-write K), 11
544537 A7 ^___________B7五、發明説明(3 ) ' 而形成之電壓之大,】、或模量係説明於14。該構件之透光度 係說明,於15。 “圖2所説明之定址時隔開始時,顯示處於雙穩性黑色狀 怨9下之H重設脈衝4使液晶重新設定於各向同性狀 態6,而後績有選擇性脈衝16。相同地,於行電柄上施加 =以選擇所需之液晶狀態之數據波型,如17所示。此於液 2兩端產生具有振幅18之電壓及由彼所致之電場,使該液 晶鬆弛回白色介穩性狀態1 〇。 所研究之像元進行後續定址時,另一個重設脈衝4‘使液 晶重新設定於各向同性狀態6,而另一個與適當之數據波 型17’同時之選擇性脈衝16,產生脈衝振幅18,,使液晶鬆弛 而品復黑色介穩性狀態9。 已知BTN LCD之缺點係因其爲雙穩性狀態,故僅可定址 黑色或白色狀態。爲了定址中間灰階,可使用各種技術。 例如,可進行亞像兀化,使該亞像元小於眼睛之解析度, 而於各像元内產生黑色及白色區域之混合物。然而,若該 技術未限制方今相當小型之低定界顯示面板,則該種配置需 要更多驅動電路,而更快速地驅動液晶混合物。而且,需 要較高之結構精確性。 另一種已知技術係於像元上施加不同之電壓或電壓序列 ’以提供不同量之黑色及白色區域。例如,此可使用不均 勾 < 像元達成,其中不同像元區域具有需要不同切換電壓 之不同性質。此種技術已知係爲,,多臨限調整,,,仍需要增 加其他製造涉驟之亞像元化,且需要較大之結構精確性。 ______ 0 本紙張尺度ill用中國一;\ ;---- ( ( NS ) ( 210X 297^f ) (讀先閲讀背面之注意事 •項再填. 裝-- 寫本頁)544537 A7 ^ ___________ B7 V. Explanation of the invention (3) 'The voltage formed by the voltage is large,] or the modulus is described in 14. The transmittance of this component is described at 15. “At the beginning of the addressing interval illustrated in FIG. 2, the H reset pulse 4 displayed under the bi-stable black shape 9 causes the liquid crystal to reset to the isotropic state 6 and then the selective pulse 16. Similarly, Apply = on the line handle to select the desired data mode of the liquid crystal state, as shown in 17. This generates a voltage with an amplitude of 18 at both ends of the liquid 2 and an electric field caused by it, causing the liquid crystal to relax back to white Metastable state 1 0. During subsequent addressing of the pixel under study, another reset pulse 4 'resets the liquid crystal to the isotropic state 6 and the other is at the same time selective as the appropriate data waveform 17' Pulse 16, which generates pulse amplitude 18, relaxes the liquid crystal and restores the black metastable state 9. The disadvantage of the known BTN LCD is that it is only a black or white state because it is a bistable state. In order to address the intermediate gray Various technologies can be used. For example, sub-pixelization can be performed to make the sub-pixel smaller than the resolution of the eye, and a mixture of black and white areas can be generated in each pixel. However, if the technology is not limited to the present Quite small low bound For display panels, this configuration requires more drive circuits and drives liquid crystal mixtures more quickly. Moreover, it requires higher structural accuracy. Another known technique is to apply different voltages or voltage sequences to the pixels. Provide different amounts of black and white areas. For example, this can be achieved using uneven pixels, where different pixel areas have different properties that require different switching voltages. This technique is known as multi-threshold adjustment ,, still need to increase the sub-pixelization of other manufacturing steps, and greater structural accuracy is required. ______ 0 This paper scale is ill; \; ---- ((NS) (210X 297 ^ f ) (Read the notes on the back and fill in the items first. Pack-write this page)
、1T it 544537 A7 五、發明説明(4 ^¾I- (讀先聞讀背面<'注意事¾再填寫本頁) 因此,已知之BTN IXD類型皆無法於不增加空間 複雜性,及所產生之增加定址速度、增加結構二:二暫時性 兩種缺點之情況下達到灰階定址。 或兼具 EP 0 234 624揭示一種超扭轉向列(STN)液晶顯示袈 其可藉著多功能區域技術顯示灰階。此裝置之電光’ 透光度)特性具有磁滯性。可藉著於液晶構件兩端施H壓/ 不同振幅之電場而達到不同之灰階度。 /、有 發明揭示 本發明第一個層面係提供一種液晶裝置,其具有至少一 個不同之光學減速等級,且包括一個雙穩性扭轉向r〜 / J〉臾 Ρ I· 構件’其具有呈第一種扭轉度而實質不施加電場時爲介禾: 性的第一種介穩狀態,及具有呈異於第一種扭轉度之第一 種扭轉度而貫質不施加電場時係爲介穩性之第二種介穩狀 態。該裝置包括定址產生器,於構件兩端施加電場,該電 場波型包括:用以重新設定液晶使之成爲具有第一種扭轉 度之重設狀態之第一個部分;用以使液晶鬆弛爲具有第二 種扭轉度之鬆弛狀態之第二個部分;及包栝用以個別選擇 至少三個不同之光學減速等級之至少三個不同波型中之任 一種的第三個部分,其中,於至少一個該減速高度中,構 件中液晶之第一個部分係處於第一個介穩狀態’而構件液 晶之第二個部分係處於第二個介穩狀態。 、 本發明另一層面中,該波型之第二個部分包括—個間隙 ,即:具有低至足以使之鬆弛之大小。 根據本發明之另一層面,該鬆弛狀態矸爲第二種介穩性 -7- 本紙张尺度:υΜ]中國囤家標净(rNS ) Μ規格( 210X 297公釐) 544537 A7 B7 ----- 五、發明説明( 狀態。 根據本發明另一方面,該至少三種不同之光學減速等級 可包括最大減速程度、最小減速程度及至少—個中間減速 程度。 根據本發明另一方面,至少一個該第—個及第三個部八 可包括至少一個脈衝。該至少一個脈衝可包括單極酿衝。 該至少一個脈衝可包括雙極脈衝。各雙極脈衝可包括第— 個及第二個具有實質相等振幅及相反極性之亞脈衝。 根據本發明另一方面,該第三個部分可包括第一個部分 及第二個部分。該第一個部分可包括第一個及第二個脈衝 。該第二個月浪衝可與該第一個脈衝相間隔。第一個脈衝之 振幅可小於第二個脈衝之振幅。該第二個部分可包括多個 具有漸小之振幅之脈衝。該第二個部分之脈衝可鄰接。 根據本發明另一方面,該定址產生器可包括數據信號產 生奈及選通U浪衝信號產生器。該構件可包括一液晶層,夾 置於多個用以接收來自選通脈衝信號產生器之選通腺衝信 號之選通脈衝電極及多個用以接收來自數據信號產生器之 數據信號之數據電極之間,該數據電極與該選通脈衝電極 相交而界定圖素。該數據信號產生器可排列以於數據電極 上提供數據信號,其振幅小於第一種及第二種介穩性狀態 之Fredericksz轉換電壓。該液晶可具有原始穩定狀態,該 數據信號之振幅可小於原始穩定狀態之Fre(iericksz轉換電 壓。所有數據信號皆可包括具有相同振幅之脈衝。所有數 據化號皆可包括對稱之雙極脈衝。所有數據信號皆可包括 -8 - 本紙張尺度糾㈣贿標 (讀先閱讀背面之注意事項再填寫本頁)1T it 544537 A7 V. Description of the invention (4 ^ ¾I- (read first and read the back &'; note ¾ then fill out this page) Therefore, the known types of BTN IXD can not be increased without increasing space complexity, and the resulting It can increase the addressing speed, increase the structure two, and achieve gray-scale addressing under two temporary and two shortcomings. Or EP 0 234 624 reveals a super twisted nematic (STN) liquid crystal display, which can be used by multi-functional area technology Display gray scale. The electro-optic 'transmittance' characteristic of this device has hysteresis. Different gray levels can be achieved by applying H pressure / electric fields with different amplitudes across the liquid crystal structure. / The invention discloses that the first aspect of the present invention is to provide a liquid crystal device, which has at least one different optical deceleration level, and includes a bistable twist direction r ~ / J> 臾 Ρ I · member ' A degree of torsion without substantial electric field application: the first metastable state of nature, and a first torsional degree that is different from the first torsional degree, but is metastable when no electric field is applied The second metastable state of sex. The device includes an address generator, and an electric field is applied at both ends of the component. The electric field waveform includes: a first part for resetting the liquid crystal to a reset state with a first degree of torsion; A second part of a relaxed state having a second degree of torsion; and a third part for individually selecting any one of at least three different waveforms of at least three different optical deceleration levels, wherein In at least one of the deceleration heights, the first portion of the liquid crystal in the component is in a first metastable state 'and the second portion of the liquid crystal in the component is in a second metastable state. 2. In another aspect of the present invention, the second part of the wave pattern includes a gap, that is, a size low enough to relax it. According to another aspect of the present invention, the relaxed state 矸 is the second type of metastability. -7- Paper size: υM] Chinese storehouse standard net (rNS) M specification (210X 297 mm) 544537 A7 B7 --- -5. Description of the invention (State. According to another aspect of the invention, the at least three different optical deceleration levels may include a maximum deceleration degree, a minimum deceleration degree, and at least one intermediate deceleration degree. According to another aspect of the invention, at least one The first and third parts may include at least one pulse. The at least one pulse may include unipolar brewing. The at least one pulse may include bipolar pulses. Each bipolar pulse may include first and second pulses. Subpulses having substantially equal amplitude and opposite polarity. According to another aspect of the present invention, the third portion may include the first portion and the second portion. The first portion may include the first and second pulses The second month wave may be spaced from the first pulse. The amplitude of the first pulse may be smaller than the amplitude of the second pulse. The second portion may include a plurality of pulses having a decreasing amplitude. The The pulses of the second part may be adjacent. According to another aspect of the present invention, the address generator may include a data signal generator and a gated U wave signal generator. The component may include a liquid crystal layer sandwiched between multiple applications. Between a strobe electrode receiving a strobe gland signal from a strobe signal generator and a plurality of data electrodes for receiving a data signal from a data signal generator, the data electrode intersects the strobe electrode The pixels are defined. The data signal generator can be arranged to provide data signals on the data electrodes, the amplitude of which is less than the Fredericksz transition voltage of the first and second metastable states. The liquid crystal can have the original stable state. The data The amplitude of the signal can be less than the Fre (iericksz conversion voltage of the original steady state. All data signals can include pulses with the same amplitude. All data signals can include symmetrical bipolar pulses. All data signals can include -8-this Paper size correction bribe (read the precautions on the back before filling this page)
、iT ——-— 544537 ___ A7 --一------ B 7 五、發明説明(6 ) ――---- (讀先閱讀背面之注意事項再填寫本頁) I 2胀衝所有數據信號皆可具有相同均方根電壓。用以 〜擇不同光學減速等級〈數據信號可具有不同之脈衝寬度。 :艮據本發明另一層面,選通脈衝之振幅可大於該第一種 ^第,種介穩狀態中較低扭轉者之Fredencksz轉換。該選 迥脈衝仏就 < 振幅可小於該第一種及第二種介穩狀態中較 低扭轉者之Fredericksz轉換的四倍。 斤根據本發明另一方面,該構件之液晶可放置於第一片及 第二片偏光板之間。該第一片及第二片偏光板可爲偏光方 向實質正交之線型偏光板。該偏光方向可定向爲彼此成8〇〇 及100。之間。 根據本發明另一方面,該構件之液晶可置於第一層及第 二層對正層之間,以提供實質與偏光方向成45。之實質反 向行平對正。反向平行可定向於與偏光方向成介於40。及 5 0°之間。該第一層及第二層對正層可具有第一個及第二個 包含角介於 135。及225。間之對正方向。該包含角可介於 170°及190。之間。該包含角可介於175。及185。之間。該包 含角可介於178。及182。之間。 根據本發明另一方面,該第一層及第二層對正層各配置 以提供介於1。及25。之間的預仰角。該預仰角可介於3。及 1 5°之間。該預仰角可介於5°及10。之間。 根據本發明另一方面,該構件之液晶可具有介於1及3 微米間之厚。 根據本發明另一方面,Δη · d可介於0.1及0.3微米間,其 中d係爲構件之液晶的厚度,Δη二ne-no,而ne及n〇係各 -9- 本紙張尺度適W中國( rNS ) Λ4規格(210X297公釐) 544537 A7 ——___ _______ B7 五、發明説明(7 ) "~-、 爲第二個介穩狀態中之液晶的異常及正常折射率。 根據本發明另一方面,該第一個及第二個介穩狀態中+ 液晶層的扭轉間之差異可實質等於36〇。。該液晶層^具^ 贯質各等於該第一個及第二個介穩狀態中之〇。及3 6〇。。兮 第一個及第二個介穩狀態各液晶層之扭轉可與原始狀態實 質相異180。。 ' 根據本發明另一方面,該構件之液晶的厚度相對於本體 螺距的比例係介於0.2及i .2之間。該比例可介於〇 5及〇 95 之間。該比例可介於0.6及0.9之間。 根據本發明另一方面,該裝置可包括圖素列及行之矩陣 ’該定址產生器係配置以於各圖框施加以連續亞圖框形式 存在之影像數據,其中n係爲大於i之整數,使各個第土 個亞圖框-其中i係爲〇<i<n之整數-包括(i + n.m)列,其中m 係爲非負數整數。 因此不需要特別之LCD結構,且不需要使用較快速切換 之液晶材料,即可達到之BTN LCD之灰階定址。可避免使 用再次細分之像元或使用不均勻幾何形狀之像元的缺點, 而可於避免使用其他類型液晶所產生之困難的情況下提供 相當平價之顯示器’諸如主動陣列扭轉向列L C D、超扭轉 向列LCD、強謗電性及反強謗電性LCD。 本發明藉由實施例參照附圖進一步説明,其中: 附圖簡述 、 圖1係爲用以説明已知類型之BTN LCD之操作的流程圖; 圖2係爲説明已知類型btn LCD之波型及液晶模式之圖; -10 - 本紙張尺度適用中國國家標冷(CNS ) Λ4規格(2l0x 297公餐) (謂先閱讀背面之注意事項再填寫本頁) 1# 項再填山 裝- 、11 A7 、發明説明( 圖3係爲構成本發 意圖. ί豆貝例之被動定址BTN LCD之示 圖4係爲圖3之奘w ” 心农置的剖面圖: 圖5係説明圖3 # w 士、 ^ ^中'^各種光學組件的取向; :、况月圖3裝置所用之各種波型及形成之性能; 圖7係圖示說明已知類型之定址波型; 圖8係圖示可用於 口3取置中<各種波型,· 圖9係説明用於圖3壯 與从a q 衣置中又另一組波型及所形成之光 予性能; 圖屬1〇係説:另—组用於圖3之裝置中之波型;而 3 : 1係爲説明使用圖9所示之波型之圖3裝置的性能的 罐Μ相片。 進行本發明之最佳模式 附圖中相同參考編號係表示相同零件。 二、2 3係説明構成本發明具體實例之被動陣列βτν LCD。 、、衣匕G括波型產生斋,以用以於像元之矩型矩陣上提供 =址波型;數據信號產生器20及選通脈衝信號產生器2 1 说月。忒數據及選通脈衝信號產生器2〇及2 1具有連接於 :以接收定時信號之定時輸入22之輸入。該數據信號產生 斋20具有數據輸入23,以接收欲顯示之數據。 數據化號產生器係連接於n個行電極24,而選通脈衝信 號產生备2 1係連接於m個列電極2 5。每個行電極2 4皆與 孫行像元共用,而每個列電極25皆與該列像元共用。該像 元係界定於行及列電極間之交點,而行電極與列電極於此 -11 - 本紙張尺度珀用中國國家標_ ( CNS ) Μ規格(210X 297公釐) 544537 A7 B7 五 、發明説明( 9 部 中 樣 绛 局、 IT ——--- 544537 ___ A7 ----- B 7 V. Description of the invention (6) -------- (Read the precautions on the back before filling in this page) I 2 All data signals can have the same rms voltage. It is used to select different optical deceleration levels (data signals can have different pulse widths. According to another aspect of the present invention, the amplitude of the strobe pulse may be larger than the Fredencksz transition of the lower twister in the first stable state. The selected pulses have an amplitude that can be less than four times the Fredericksz transition of the lower torsion in the first and second metastable states. According to another aspect of the present invention, the liquid crystal of the member can be placed between the first and second polarizers. The first and second polarizing plates may be linear polarizing plates whose polarization directions are substantially orthogonal. The polarization directions can be oriented at 800 and 100 with respect to each other. between. According to another aspect of the present invention, the liquid crystal of the member can be placed between the first layer and the second alignment layer to provide a substantially 45 degree polarization direction. The essence is the opposite. Antiparallel can be oriented between 40 and the polarization direction. And 50 °. The first and second alignment layers may have first and second inclusion angles between 135. And 225. The direction is aligned. The inclusion angle can be between 170 ° and 190. between. The inclusion angle may be between 175. And 185. between. The inclusion angle can be between 178. And 182. between. According to another aspect of the present invention, the first layer and the second layer are each configured to provide an interval between 1. And 25. Pre-elevation angle between. The pre-elevation angle may be between three. And 15 °. The pre-elevation angle may be between 5 ° and 10. between. According to another aspect of the present invention, the liquid crystal of the component may have a thickness between 1 and 3 microns. According to another aspect of the present invention, Δη · d may be between 0.1 and 0.3 microns, where d is the thickness of the liquid crystal of the component, Δη is ne-no, and ne and n〇 are each -9- China (rNS) Λ4 specification (210X297 mm) 544537 A7 ——___ _______ B7 V. Description of the invention (7) " ~-, is the abnormality and normal refractive index of liquid crystal in the second metastable state. According to another aspect of the present invention, the difference between the first and second metastable states + the twist of the liquid crystal layer may be substantially equal to 36. . Each of the liquid crystal layers is equal to 0 of the first and second metastable states. And 3 60. . The twists of the liquid crystal layers in the first and second metastable states can be substantially different from the original state. . According to another aspect of the present invention, the ratio of the thickness of the liquid crystal of the component to the pitch of the main body is between 0.2 and i.2. The ratio can be between 05 and 95. The ratio can be between 0.6 and 0.9. According to another aspect of the present invention, the device may include a matrix of pixel columns and rows. The address generator is configured to apply image data in the form of continuous sub-frames to each frame, where n is an integer greater than i. Let the first sub-picture frame-where i is an integer of 0 < i < n-include (i + nm) columns, where m is a non-negative integer. Therefore, there is no need for a special LCD structure, and the gray-scale addressing of the BTN LCD can be achieved without using a faster-switching liquid crystal material. Can avoid the disadvantages of subdividing pixels or using pixels with uneven geometries, and can provide a fairly affordable display while avoiding the difficulties caused by using other types of liquid crystals, such as active array twisted nematic LCD Reverse nematic LCDs, defamatory and anti-defamatory LCDs. The present invention is further explained by way of examples with reference to the accompanying drawings, in which: Brief description of the drawings, FIG. 1 is a flowchart for explaining the operation of a known type of BTN LCD; FIG. 2 is a wave for explaining a known type of btn LCD Figure and LCD mode; -10-This paper size is applicable to China National Standard Cold (CNS) Λ4 specifications (2l0x 297 meals) (It is said that you must read the precautions on the back before filling this page) 1 # and then fill in the mountain pack- , 11 A7, Description of the invention (Figure 3 is the intention of the present invention. Figure 4 shows a passive addressing BTN LCD. Figure 4 is a cross-sectional view of Xinnongzhi in Figure 3: Figure 5 is an illustration of Figure 3. # w 士, ^ ^ 中 '^ Orientation of various optical components;:, Fig. 3 Various wave modes used in the device and the performance of the formation; Figure 7 illustrates a known type of addressing waveform; Figure 8 is a diagram The display can be used in the mouth 3 to get the various waveforms. Figure 9 is used to illustrate another set of waveforms used in Figure 3 and from the aq clothes set and the resulting light performance; the picture belongs to the 10 series. : Another—group is used in the wave form of the device of FIG. 3; and 3: 1 is the phase of the tank M that illustrates the performance of the device of FIG. 3 using the wave form shown in FIG. 9 In the drawings, the same reference numerals indicate the same parts. Second, the second and third are descriptions of the passive array βτν LCD that constitutes a specific example of the present invention. In order to provide = address waveform on the rectangular matrix of the picture element; the data signal generator 20 and the strobe signal generator 2 1 say the month. 忒 The data and strobe signal generators 20 and 21 have connections to: It receives the input of the timing input 22 of the timing signal. The data signal generator 20 has a data input 23 to receive the data to be displayed. The digitizer is connected to n row electrodes 24, and the strobe signal generator is prepared. 2 1 is connected to m column electrodes 25. Each row electrode 24 is shared with the Sun row pixel, and each column electrode 25 is shared with the column pixel. The pixel is defined by the row and column electrodes. Intersection point between the row electrode and the column electrode is here -11-This paper size uses the Chinese national standard _ (CNS) M specification (210X 297 mm) 544537 A7 B7 V. Description of the invention (9 of the sample bureaus
消 资 印 V 處重疊,例如7以26表示。 孩數,據信號產生器20係配置以同時於該^個行電極1 上提供提供數據信號Vdl,..,Vdn。該選通脈衝信號產生器 2 1之配置係以重複序列一次於該m個列電極2 5上提供選 通脈衝信號Vs 1,…,Vsm,以於該像元内一次選通一列新^ 像數據。 ’ ~ 圖4係爲以透射型顯示形式説明該btn LCD之結構之剖 面圖3,但亦可提供反射型顯示。該裝置包括偏光板3〇, 固足於透明基板3 1之外表面,例如由玻璃所製造。該基板 31具有由透明導體諸如氧化銦錫(IT〇)所製造之列電極 ,及對正層3例如包括經摩擦之聚醯亞胺。偏光板”固定 於另一片例如由破璃所製造之透明基板33之外表面上。該 基板33心内表面上具有由透明導體諸如IT〇所製造之行電 極24,及對正層2例如包括經摩擦之聚醯亞胺。爲了界定 欣晶層,該裝置係使對正層2及3彼此面對並由間隔物% 隔開。形成之間隙充填膽固醇液晶5以形成根據任何適當 之方式密封之料層。 該偏光板30及32及該對正層2及3之偏光及對正取向係 説明於圖5中。偏光板3〇及32之偏光取向個別説明於γ 及)6中,而對正層2及3之表面對正取向係説明於3 7。該 偏光取向36及35實質上彼此正交,而對正取向37係反向 平行而與偏光取向35及36實質成45。。液晶5具有實質拉 轉及異貝未扭轉之介穩狀態。該扭轉狀態係由3 8所表示泛 液晶分子取向所表示,此時扭轉狀態實質爲36〇。。該未杂 («先閱讀背面之注意事 1· 項再填· 裝— :寫本頁) 、11 -12- 本紙張尺度關+ _家標# ( CNS )Λ4^# ( 210^297^1^ 544537 A7 B7 40吸 五、發明説明(1〇 ) 轉狀態係説明於39,所有分子皆對正於取闽,, 、取W 37。於扭轉 介穩狀,態中,光4 0由偏光板3 0偏向取向3 s ’ ’而其偏光會 質上不受通過液晶5所影響。該正交偏光36導致光 ^ 收,而像元學員示黑色或不透明。 ^爲39所τχ:之未扭轉之介魏、狀態,則該、為3 „、 、 说曰口)心雙折射 係使來自偏光板30之偏光貫質旋轉90。,而命^ 、偏光取向3 6 對正。該像元因此顯示白色或透光。 圖6説明由數據及選通脈衝信號產生器2〇及 曰 久21所提供 之數據及選通脈衝信號之波型。該選通脈衝或列波型^包 括第一個部分及後續第二個部分,其後依序有一個第二個 部分。該第一個部分包括重設脈衝4 1。該第二個部+勺括 一個間隔或重設周期。該第三個部分之第一個部分包括稱 爲部分重設月浪衝42。該第三個部分之第二個部分包括稱^ 變化性脈衝43。 該行或數據波型包括具有固定振幅之雙極脈衝,但寬度 變化以選擇所需之像元灰階。該數據脈衝係爲雙極性而二 具有淨DC成分。該選通脈衝係爲單極,而其極性可周期 性地改變,例如自圖框至圖框,以表現DC平衡並避免液 晶5之損壞。 於液兩y而形成之波型係以13表示,而該波型之振幅或 模數係以14表示。 爲了更新像元列,於選通脈衝信號波型及由彼所致而位 於列像元兩端之電場波型的第一個部分期間,該重設脈衝 4 1係由選通脈衝信號產生器2丨提供至適當之列電極25, -13- --------^批衣------II------ , - (請先閲讀背面之注意事項再填寫本頁} 本紙張尺度適用中國围家標净(rNS)A4規格(21〇χ 297公 釐) A7 B7 544537 五、發明説明( 而更新其他列。..There is an overlap at V, for example, 7 is represented by 26. According to the data, the signal generator 20 is configured to provide the data signals Vdl, .., and Vdn on the row electrodes 1 at the same time. The strobe signal generator 21 is configured to provide strobe pulse signals Vs 1, ..., Vsm on the m column electrodes 25 at a time in a repeating sequence to strobe a new column of images at a time in the pixel. data. Fig. 4 is a cross-sectional view 3 illustrating the structure of the btn LCD in the form of a transmissive display, but a reflective display can also be provided. The device includes a polarizing plate 30 fixed to the outer surface of the transparent substrate 31, and is made of glass, for example. The substrate 31 has a row of electrodes made of a transparent conductor such as indium tin oxide (ITO), and the alignment layer 3 includes, for example, rubbed polyimide. The "polarizing plate" is fixed on the outer surface of another transparent substrate 33 made of, for example, glass. The inner surface of the substrate 33 has row electrodes 24 made of a transparent conductor such as IT0, and the alignment layer 2 includes, for example, Rubbed polyimide. In order to define the crystalline layer, the device faces the facing layers 2 and 3 facing each other and is separated by a spacer%. The gap formed is filled with cholesteric liquid crystal 5 to form a seal according to any suitable method The polarizing plates and alignments of the polarizing plates 30 and 32 and the pairing layers 2 and 3 are illustrated in FIG. 5. The polarizing orientations of the polarizing plates 30 and 32 are individually illustrated in γ and 6), and The surface alignments of the alignment layers 2 and 3 are described in 37. The polarized alignments 36 and 35 are substantially orthogonal to each other, while the alignments 37 are antiparallel and substantially 45 with the polarized alignments 35 and 36. The liquid crystal 5 has a metastable state of substantial pulling and non-twisting. The twisted state is represented by the orientation of the pan-liquid crystal molecules represented by 38. At this time, the twisted state is substantially 36. The unmixed («Read the back first Notes 1 · Refilling · Loading —: Write this page), 11 -12- Paper scale off + _ 家 标 # (CNS) Λ4 ^ # (210 ^ 297 ^ 1 ^ 544537 A7 B7 40 Summing 5. Description of the invention (10) The state of the transition is explained at 39, all the molecules are aligned with each other, ,, Take W 37. In the twisted metastable state, in the state, light 40 is deflected by the polarizing plate 30 to the orientation 3 s '' and its polarization is not substantially affected by passing through the liquid crystal 5. The orthogonally polarized light 36 causes light ^ Closed, and the elementary students show black or opaque. ^ Is the τχ of 39 places: the untwisted state of Wei, the state, then, it is 3 „, 说 said) the heart birefringence makes the polarized light from the polarizing plate 30 Rotate 90 degrees. , And life ^, polarized light orientation 3 6 is aligned. The picture element thus appears white or translucent. Figure 6 illustrates the waveforms of the data and strobe signals provided by the data and strobe signal generators 20 and 21. The strobe or column pattern ^ includes the first part and the following second part, followed by a second part in sequence. The first part includes a reset pulse 41. The second part + spoon contains an interval or reset period. The first part of this third part includes what is called a partial reset moon wave charge42. The second part of the third part includes a variable pulse 43. The line or data pattern includes a bipolar pulse with a fixed amplitude, but the width varies to select the desired gray level of the cell. The data pulse is bipolar and the two have a net DC component. The strobe pulse is unipolar, and its polarity can be changed periodically, such as from the frame to the frame, to show DC balance and avoid damage to liquid crystal 5. The wave pattern formed at liquid two y is represented by 13, and the amplitude or modulus of the wave pattern is represented by 14. In order to update the column of pixels, the reset pulse 4 1 is generated by the strobe signal generator during the first part of the strobe signal waveform and the electric field waveform caused by both of them at both ends of the column pixel 2 丨 Provide to the appropriate electrode 25, -13- -------- ^ batch clothes ------ II ------,-(Please read the precautions on the back before filling in this Page} This paper size is applicable to China's standard (RNS) A4 (21〇χ 297 mm) A7 B7 544537 5. Description of the invention (and update other columns ..
44所表不之形成之電壓的模數IModulus I of the voltage represented by 44
Fref z轉換電譽,4吏液晶重設至具有零扭轉之於 性狀悲6。選通脈衝信?虎波型及由彼所致之像元〜向同 個邵分期間,欲更新之列像元僅接收數據信::型 。此寺波型〈振幅小至使液晶鬆弛至具有36〇。扭轉型 ,相信其係扭轉或黑色介穩狀態9,但可係爲或包括:態 360。扭轉之部分各向同性狀態。 戽有 於選通脈衝信號波型及由彼所致之像元電場波型之、 個部分中,部分重設脈衝42係施加於列電極25,炎^三 據波型一起提供一電壓,其模數45係用以選擇一相對=, 之灰階。脈衝42之高度及寬度特別經選擇以達到目前^目= P刀工白或重汉。该空白或重設程度因此隨像元區域+ 不同而改變。此種改變可由贍固醇中定向子波動$ Fredencksz轉換之不均勻流動所致。相信於由脈衝42所致 之空白充分之區域中,產生非扭轉各向同性或預設白色狀 態,於該部分重設脈衝42具有較小效應之區域中,該液晶 S白成表示預設黑色狀態而扭轉3 6〇。之近各向同性狀態。 預設白色及預設黑色功能區域之相對含量係由與部分重設 脈衝42同時施加之數據電壓所決定。 之後施加變化性脈衝43,相信其係作爲”急衝式白色’’, 以於預設白色狀態區域中產生白色。預設黑色狀態之區域 不受腺衝43所影響,而鬆弛或爲黑色狀態。該變化性脈衝 43係經選擇以使同時施加之數據電壓實質不影響所選擇 之最終狀態。 14- 本紙張尺度適州中國囤家標净(rNS ) Λ4規格(210X297公釐) ,'IT ί * (η先閱讀背面之注意事項再填寫本頁j 544537 A7 _____B7 、發明说明(12 ) ^ 另一種定址技術異於前述者之處係爲脈衝42及43係經 還擇使:形成(透光度實質由於脈衝43期間施加之數據電 麼決足。孩脈衝43相信係於脈衝η期間使以以以以以轉 換開始,而影響預設白色及預設黑色區域之比例。如前文 所述,相k派衝43亦使預設白色區域鬆弛成白色鬆弛狀態。 空白程度之局部i異相信係、因膽目醇液晶中熱波動或電 壓變化所致之動態不均勻性或兩種所致。尤其,於液晶之 重設及鬆弛期間,該液晶分子無法皆於同一方向移動,故 其於不同足位時暫時具有不同之取向。藉著改變施加於液 晶之電場之皮型的模數45 ,可選擇相同灰階。例如,牝 所示之數據波型導致一波型,其模數〇選擇或定址較由模 數45所定址者暗之灰階。 圖7説明前述已知定址配置中所用之波型類开』,而圖8 説明各種可用於本發明之波型。目7⑷説明EpQ 〇i8 18〇 所揭示之波型類型,其中重設脈衝41如5〇所示般地迅速 降低以定址黑色,或如51所示般地較緩慢地降低 址白 色。 圖7(b)及(e)説明EP 〇 569 〇29所揭示之兩類波型。重設 脈衝41後~ <各種脈衝52於(1})中係鄰接而於 設脈衝41相隔。 )千係” 圖()\不重汉脈衝4 1後續一間隔,後續部分重設派衡 42及夂化性脈衝43。於⑷中,脈衝及μ於時間上係相 間隔。 ,I月範1¾内(波型結構的變化係説明於圖8之〇)爻⑴ (讀先閱讀背面之注意事項再填寫本頁) ί裝· 訂 0 本紙張尺度刺中國國家鱗 -15- (210X 297公釐) 544537 A7 五、發明説明( 13 中。脈衝42及43尤其可於時間上相間隔,或可於時間上 鄰接而!可包括脈衝之組合物。例如,如⑻及⑷所示,部分 重設脈衝42可分成兩個部分42a及42b,其可如(b)所示般 地鄰接或如(c)所示般地於時間上相間隔。第—個部分 具有小於第二個部分42b之振幅,而第二個部分4几之形 狀係僅使於第一個部分4 2 a期間内施加之數據影響灰階選 擇。 單一變化性脈衝43可包括一系列振幅漸減之脈衝,如(⑴ 、⑷及⑴所示,個別與⑷、(b)及⑷所示之脈衝42、仏 :42b結合。該部分重設脈衝42及變化性脈衝之波型 無明顯差異,例如(d)至⑴所説明。 圖9説明圖8(c)所示之波型類型之波型圖及透光度。行 波型i2(a)與雙極部分重設脈衝42之第—個部分42&共同 操作,使實質上整體像元切換成透明或白色狀態,如15^) 所示。12(b)所示之行或數據波型控制中間或灰階之定址 2透光曲線叫)所示。所說明之行或數據波型使 线貝上整體像元切換成黑色,如1 5 ( c)所示。 圖9所説明之性能係使用圖3至5所説明之裝置類型達 成’其液晶厚度2微米,使用摻雜有對掌性摻雜劑W川 (向列欲晶混合物ZU-4792,膽固醇螺距3微米之液 兩種材料皆爲Merek所售)。對正層2及3包括預仰角 之反向平行聚醯亞胺。該列波型U包括持績時間3毫秒石 振幅37伏特之重設脈衝41。此後續有]1毫秒之觉伏特^ 壓間隔,後續有持續時間G.25毫秒而振幅45伏特之 -16- (讀先閱讀背面之注意事項再填寫本頁)Fref z converts the electric reputation, and the LCD is reset to have zero twist to the traits. Strobe Pulse Letter? The tiger wave type and the pixels caused by him ~ During the same sub-sharing period, the pixel to be updated only receives data letters :: type. This temple wave pattern is small enough to relax the liquid crystal to 36 °. Twisted, it is believed to be a twisted or black metastable state9, but can be or include: state 360. Reversed part of the isotropic state.戽 In the gate pulse waveform and the pixel electric field waveform caused by them, part of the reset pulse 42 is applied to the column electrode 25, and the three waveforms together provide a voltage. Modulus 45 is used to select a relative gray scale. The height and width of the pulse 42 are specially selected to achieve the current ^ mesh = P knife white or heavy man. The degree of blanking or resetting therefore changes with the cell area +. This change can be caused by the non-uniform flow of $ Frendencksz transition of the voron in steroids. It is believed that the non-twisted isotropic or preset white state is generated in a region with sufficient blankness caused by the pulse 42. In the region where the reset pulse 42 has a small effect in this part, the liquid crystal S is white to indicate a preset black The state is reversed by 3 60. Near isotropic state. The relative content of the preset white and preset black functional areas is determined by the data voltage applied at the same time as the partial reset pulse 42. Later, a variable pulse 43 is applied, which is believed to be a “rush white” to produce white in the preset white state region. The region in the preset black state is not affected by the glandular impulse 43 and is relaxed or black. The variability pulse 43 is selected so that the data voltage applied at the same time does not substantially affect the selected final state. 14- This paper size is suitable for China State Standard (rNS) Λ4 specification (210X297 mm), 'IT ί * (η read the precautions on the back before filling in this page j 544537 A7 _____B7, description of the invention (12) ^ Another addressing technology is different from the former is the pulse 42 and 43 are also optional: forming (transparent The luminosity actually depends on the data applied during the pulse 43. The child pulse 43 is believed to be caused by the conversion of the pulse η to affect the ratio of the preset white and preset black areas. As described above Phase k 43 also relaxes the preset white area into a white relaxed state. The local difference in the degree of blankness is believed to be due to dynamic inhomogeneity due to thermal fluctuations or voltage changes in the bileol liquid crystal or both. .especially During the resetting and relaxation of the liquid crystal, the liquid crystal molecules cannot all move in the same direction, so they temporarily have different orientations at different foot positions. By changing the modulus of the skin type of the electric field applied to the liquid crystal, 45, Select the same grayscale. For example, the data waveform shown by 导致 results in a waveform with a modulo 0 selection or addressing a grayscale that is darker than the addressing by the module 45. Figure 7 illustrates the previously used addressing configuration. Wave pattern is on ", and Fig. 8 illustrates various wave patterns that can be used in the present invention. Item 7 illustrates the wave pattern type disclosed in EpQ 〇i8 18〇, in which the reset pulse 41 is rapidly lowered as shown in Fig. 5 to address. Black, or slowly decrease the white as shown in 51. Figures 7 (b) and (e) illustrate the two types of wave patterns disclosed in EP 0569 029. After resetting the pulse 41 ~ < various pulses 52 The lines in (1)) are adjacent and separated by set pulse 41.) Thousand series "Figure () \ Non-Han pulse 4 1 In a subsequent interval, the following part resets the balance 42 and the pulsation 43. Yu Yanzhong The pulse and μ are phase-spaced in time. Within the range of 1 month (the change of the wave structure is (See Figure 8 (No. 8)) 爻 ⑴ (Read the precautions on the reverse side and then fill out this page) Binding and order 0 This paper scales the Chinese national scale -15- (210X 297 mm) 544537 A7 V. Description of the invention ( 13. The pulses 42 and 43 may be spaced apart in time or may be adjacent in time! Compositions that may include pulses. For example, as shown by ⑻ and ⑷, the partial reset pulse 42 may be divided into two parts 42a And 42b, which may be adjacent as shown in (b) or spaced in time as shown in (c). The first part has an amplitude smaller than that of the second part 42b, and the second part The shape is such that the data applied during the first part 4 2 a affects the choice of grayscale. The single variability pulse 43 may include a series of pulses with decreasing amplitude, as shown by (⑴, ⑷, and ⑴, individually combined with the pulses 42 and 仏: 42b shown by ⑷, (b), and ⑷. This part resets the pulse 42 There are no significant differences in the wave patterns of the variable pulses, as shown in (d) to ⑴. Figure 9 illustrates the wave pattern and transmittance of the wave pattern types shown in Figure 8 (c). Traveling wave pattern i2 (a) Operate with the first part 42 & of the bipolar part reset pulse 42 to switch substantially the whole pixel to a transparent or white state, as shown in 15 ^). The line shown in 12 (b) or the address of the middle or gray level of the data waveform control 2 The light transmission curve is called). The illustrated line or data waveform causes the overall pixels on the line to switch to black, as shown in Figure 15 (c). The performance illustrated in Figure 9 was achieved using the device types illustrated in Figures 3 to 5 'with a liquid crystal thickness of 2 microns and the use of a dopant doped with W. (nematic nematic mixture ZU-4792, cholesterol pitch 3 Micron liquids are both materials sold by Merek). The facing layers 2 and 3 include antiparallel polyimide having a pre-elevation angle. This train of waveform U includes a reset pulse 41 with a 3 ms duration and a 37 volt amplitude. This follow-up] 1 millisecond conscious volts ^ pressure interval, followed by a duration of G. 25 milliseconds and an amplitude of 45 volts -16- (Read the precautions on the back before filling in this page)
1· 項再填I 裝_ 訂 # 本紙張尺度_中_家標净 釐) 544537 A7 B7 五 '發明説明( 1-4 (請先閱讀背面之注意事項再填寫本頁) 脈衝42a。贬續有0.25毫秒之間隙,及持續時間〇 25毫秒 而振幅! 35伏特之部分42b。後續〇.5毫秒之間隙,及持續 時間0.25毫渺而振幅9伏特之脈衝43。此後續有3〇毫秒 之間隙,之後重複该波型。該行波型包括振幅2 5伏特而 基於25毫秒之脈衝持續時間之雙極脈衝。 圖10説明用以提供10個用於圖3至5所示之顯示器類型 之灰1¾的數據波型,包括黑色及白色。此情況下,偏光取 向35及36係設定於4。及86。,而對正取向37係設定於45。 。孩對正層2及3包括反向平行聚醯亞胺,其係用以提供 約7。之預仰角,諸如Merck所售之RN715 ^該液晶層厚度 爲1.4微米,包含摻雜有約L3重量百分比之對掌性摻雜劑 R-1011之向列液晶混合物ZLI_4792。該列波型Η包括持 續時間3毫秒而振幅30伏特之雙極重設脈衝41,後續 毫秒之間隙。該單極脈衝42具有88亳秒之持繒時間及'17^ 伏特之振幅,Μ 0.204毫秒之間隙。後續有持鲭時間·工 毫秒而振幅5·3伏特之雙極脈衝列43。該列波型重複之扩 有一個24.308毫秒之間隙。脈衝41之極性於脈衝4】=二 時間之中途改變,而脈衝42於每次重複時改變炼性。今= 衝列43包括個別脈衝,寬度8毫杪,與行波型12之= 改變錯開4毫秒。 行波型包括長8毫秒而振幅Κ7伏特之雙極脈衝。 用以達到自黑色至白色之灰階(相對於波型編號… 所需I特足數據脈衝波型係與部分重設脈衝心同步。 圖11⑷、(b)及⑷顯示使用具有_ 9所示之波型之前逑 -17 本紙張人度诚用中國國象標_((、奶)/\4規格(210/ 297公釐) 544537 五、發明説明( A7 B71 · Refill the item I Binding_ Order # This paper size _ Medium _ House standard net weight) 544537 A7 B7 Five 'invention description (1-4 (Please read the precautions on the back before filling this page) Pulse 42a. Depreciation continued There is a gap of 0.25 milliseconds, and the duration is 0.25 milliseconds and amplitude! 42b part of 35 volts. The subsequent 0.5 milliseconds gap, and a pulse of 0.25 milliseconds and 9 volts amplitude 43. This subsequent time is 30 milliseconds. Gap, and then repeat the wave pattern. The line wave pattern includes bipolar pulses with an amplitude of 25 volts and a pulse duration of 25 milliseconds. Figure 10 illustrates the use of 10 for the type of display shown in Figures 3 to 5. The data pattern of gray 1¾ includes black and white. In this case, the polarized orientations 35 and 36 are set to 4. and 86., and the orientation 37 is set to 45. The child alignment layers 2 and 3 include the reverse Oriented polyimide, which is used to provide a pre-elevation angle of about 7, such as RN715 sold by Merck. The thickness of the liquid crystal layer is 1.4 microns, and it contains a dopant R doped with about L3 weight percent. -1011 nematic liquid crystal mixture ZLI_4792. The column wave pattern includes a duration of 3 milliseconds The bipolar reset pulse 41 with an amplitude of 30 volts has a gap of subsequent milliseconds. The unipolar pulse 42 has a hold time of 88 亳 s and an amplitude of '17 ^ volts and a gap of Μ 0.204 milliseconds. There is a follow-up time · Working milliseconds with an amplitude of 5 · 3 volts in a bipolar pulse train 43. The repetitive expansion of this train has a gap of 24.308 milliseconds. The polarity of pulse 41 is changed in the middle of pulse 4] = pulses are changed halfway, while pulse 42 Change reproducibility when repetitive. This = impulse 43 includes individual pulses with a width of 8 milliamps, and the traveling wave pattern 12 = change 4 milliseconds. The traveling wave pattern includes bipolar pulses with a length of 8 milliseconds and an amplitude of K7 volts. Reaching a gray scale from black to white (relative to the waveform number ... The required I special data pulse waveform is synchronized with the partial reset pulse center. Figure 11 (b) and (b) show the use of waves with _ 9 Before the model 逑 -17 This paper is intended to use the Chinese national symbol _ ((, milk) / \ 4 size (210/297 mm) 544537 V. Description of the invention (A7 B7
1S (讀先閱讀背面之注意事項再填寫本頁} 衣/所仔〈結果。圖U(c)特別顯示對應於透光度15(c) 巴”如透光曲線15(a)所示之行波型12⑷所得之白色 :況明於圖11之⑷中。相同地,由透光曲線15(bm示之 火階係表示於圖11㈦中。因此,黑色與白色之間可保持良 好對比,並提供可輕易與黑色及白色辨別之中間灰階。 工業應用性 根據本發明,不需要特別結構之LCD且不需要使用較快 速切換之液晶材料,即可得到3TN LCD之灰階定址。可擗 免將像元再細分或使用不均勻幾何形狀之液晶的缺點,可 提供具有良好視角及速度而相當平價之顯示器,而避免使 用共他類型液晶諸如主動陣列扭轉液晶顯示裝置、超扭轉 向列液晶顯示裝置、強謗電性及反強謗電性液晶顯示裝置 之困難。 18- 本紙張尺度诚用中國國家標_( (、NS ) Λ4規格(210X 297公釐)1S (Read the precautions on the back before filling this page} Clothing / Sozai <Results. Figure U (c) specifically shows the light transmittance corresponding to 15 (c) bar "as shown in the light transmittance curve 15 (a) The white color obtained from the traveling wave pattern 12⑷: The situation is shown in Figure 11⑷. Similarly, the fire level shown by the light transmission curve 15 (bm is shown in Figure 11㈦. Therefore, a good contrast can be maintained between black and white. It also provides an intermediate gray scale that can be easily distinguished from black and white. Industrial Applicability According to the present invention, the gray scale addressing of 3TN LCD can be obtained without the need for a specially structured LCD and the use of faster switching liquid crystal materials. Eliminates the disadvantages of subdividing pixels or using liquid crystals with non-uniform geometric shapes, which can provide fairly affordable displays with good viewing angles and speeds, while avoiding the use of common-type liquid crystals such as active-array twisted liquid crystal display devices and super-twisted nematic liquid crystals Difficulties in display devices, defensive electrical and anti-refractory liquid crystal display devices. 18- This paper size uses the Chinese national standard _ ((, NS) Λ4 specification (210X 297 mm)
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9717597.0A GB9717597D0 (en) | 1997-08-21 | 1997-08-21 | Liquid crystal device |
Publications (1)
Publication Number | Publication Date |
---|---|
TW544537B true TW544537B (en) | 2003-08-01 |
Family
ID=10817741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW087113831A TW544537B (en) | 1997-08-21 | 1998-08-21 | Liquid crystal device |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2001514399A (en) |
KR (1) | KR100335159B1 (en) |
GB (1) | GB9717597D0 (en) |
TW (1) | TW544537B (en) |
WO (1) | WO1999010870A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7193625B2 (en) | 1999-04-30 | 2007-03-20 | E Ink Corporation | Methods for driving electro-optic displays, and apparatus for use therein |
US7012600B2 (en) | 1999-04-30 | 2006-03-14 | E Ink Corporation | Methods for driving bistable electro-optic displays, and apparatus for use therein |
FR2808891B1 (en) * | 2000-05-12 | 2003-07-25 | Nemoptic | BISTABLE REFLECTION DISPLAY DEVICE |
JP3630129B2 (en) * | 2001-09-28 | 2005-03-16 | ソニー株式会社 | Liquid crystal display |
WO2003044765A2 (en) * | 2001-11-20 | 2003-05-30 | E Ink Corporation | Methods for driving bistable electro-optic displays |
US9530363B2 (en) | 2001-11-20 | 2016-12-27 | E Ink Corporation | Methods and apparatus for driving electro-optic displays |
US8558783B2 (en) | 2001-11-20 | 2013-10-15 | E Ink Corporation | Electro-optic displays with reduced remnant voltage |
US9412314B2 (en) | 2001-11-20 | 2016-08-09 | E Ink Corporation | Methods for driving electro-optic displays |
KR20040066132A (en) * | 2001-11-22 | 2004-07-23 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | Bistable liquid crystal device having two drive modes |
US20080024482A1 (en) | 2002-06-13 | 2008-01-31 | E Ink Corporation | Methods for driving electro-optic displays |
US20130063333A1 (en) | 2002-10-16 | 2013-03-14 | E Ink Corporation | Electrophoretic displays |
US10726798B2 (en) | 2003-03-31 | 2020-07-28 | E Ink Corporation | Methods for operating electro-optic displays |
JP2004317785A (en) * | 2003-04-16 | 2004-11-11 | Seiko Epson Corp | Method for driving electrooptical device, electrooptical device, and electronic device |
US8928562B2 (en) | 2003-11-25 | 2015-01-06 | E Ink Corporation | Electro-optic displays, and methods for driving same |
US11250794B2 (en) | 2004-07-27 | 2022-02-15 | E Ink Corporation | Methods for driving electrophoretic displays using dielectrophoretic forces |
WO2011127462A2 (en) | 2010-04-09 | 2011-10-13 | E Ink Corporation | Methods for driving electro-optic displays |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69318062T2 (en) * | 1992-05-07 | 1998-10-01 | Seiko Epson Corp | Liquid crystal display device with two metastable states and control method therefor |
JP3634390B2 (en) * | 1992-07-16 | 2005-03-30 | セイコーエプソン株式会社 | Liquid crystal electro-optic element |
JPH06194623A (en) * | 1992-12-24 | 1994-07-15 | Casio Comput Co Ltd | Driving method of antiferroelectric liquid crystal display element |
JP3489169B2 (en) * | 1993-02-25 | 2004-01-19 | セイコーエプソン株式会社 | Driving method of liquid crystal display device |
JPH07120762A (en) * | 1993-10-27 | 1995-05-12 | Seiko Epson Corp | Liquid crystal display device and its production |
JPH08313878A (en) * | 1994-08-04 | 1996-11-29 | Seiko Epson Corp | Driving method for liquid crystal display device and liquid crystal display device |
JPH08248374A (en) * | 1995-03-10 | 1996-09-27 | Seiko Epson Corp | Waveform display device |
KR100254647B1 (en) * | 1995-05-17 | 2000-05-01 | 야스카와 히데아키 | Liquid crystal display device and its drive method and the drive circuit and power supply circuit used therein |
JPH09189895A (en) * | 1996-01-10 | 1997-07-22 | Seiko Epson Corp | Driving method for liquid crystal display device |
-
1997
- 1997-08-21 GB GBGB9717597.0A patent/GB9717597D0/en not_active Ceased
-
1998
- 1998-08-20 KR KR1020007001743A patent/KR100335159B1/en not_active IP Right Cessation
- 1998-08-20 JP JP2000508103A patent/JP2001514399A/en not_active Withdrawn
- 1998-08-20 WO PCT/JP1998/003691 patent/WO1999010870A1/en active IP Right Grant
- 1998-08-21 TW TW087113831A patent/TW544537B/en active
Also Published As
Publication number | Publication date |
---|---|
WO1999010870A1 (en) | 1999-03-04 |
KR20010023121A (en) | 2001-03-26 |
KR100335159B1 (en) | 2002-05-04 |
GB9717597D0 (en) | 1997-10-22 |
JP2001514399A (en) | 2001-09-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW544537B (en) | Liquid crystal device | |
US5594464A (en) | Liquid crystal display device having two metastable states and driving method therefor | |
US6281866B1 (en) | Display device and a method of addressing a display device | |
JP3603904B2 (en) | Driving method and apparatus for antiferroelectric liquid crystal display element | |
JPH11153778A (en) | Liquid crystal cell and its driving method | |
US20080218469A1 (en) | Transient liquid crystal architecture | |
TWI360801B (en) | Improved bistable nematic liquid-crystal display m | |
WO2005106576A1 (en) | Liquid crystal display | |
US7817128B2 (en) | Liquid crystal display device and driving circuit for liquid crystal panel with a memory effect | |
KR100487691B1 (en) | Ferroelectric Liquid Crystal Display | |
JPH10325945A (en) | Diffractive liquid crystal device | |
TW574534B (en) | Liquid crystal display device | |
JPH0225834A (en) | Liquid crystal device | |
JP4705494B2 (en) | Memory LCD panel | |
JP3641907B2 (en) | Liquid crystal display | |
CN100535976C (en) | Drive scheme for a cholesteric liquid crystal display device | |
TW201220266A (en) | Driving method for bistable display | |
KR20090115965A (en) | Liquid crystal display comprising improved switching means | |
JP2006154078A (en) | Liquid crystal panel with memory function | |
Li et al. | Passive‐matrix‐driven field‐sequential‐color displays | |
JP2002139746A (en) | Liquid crystal display device | |
JPH11326873A (en) | Liquid crystal device | |
JP3528481B2 (en) | Liquid crystal display device and liquid crystal cell driving method | |
JP2002014325A (en) | Method for driving memory cholesteric liquid crystal display device | |
JPS63195625A (en) | Method for driving liquid crystal display element |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent |