RU94037146A - Liquid-crystal screen with active matrix - Google Patents

Liquid-crystal screen with active matrix

Info

Publication number
RU94037146A
RU94037146A RU94037146/25A RU94037146A RU94037146A RU 94037146 A RU94037146 A RU 94037146A RU 94037146/25 A RU94037146/25 A RU 94037146/25A RU 94037146 A RU94037146 A RU 94037146A RU 94037146 A RU94037146 A RU 94037146A
Authority
RU
Russia
Prior art keywords
image
electrode
electrodes
data
capacitance
Prior art date
Application number
RU94037146/25A
Other languages
Russian (ru)
Other versions
RU2118839C1 (en
Inventor
О.Ф. Огурцов
Б.И. Казуров
Original Assignee
Фирма "ЛГ Электроникс"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Фирма "ЛГ Электроникс" filed Critical Фирма "ЛГ Электроникс"
Priority to RU94037146A priority Critical patent/RU2118839C1/en
Priority to KR1019950031884A priority patent/KR100205378B1/en
Publication of RU94037146A publication Critical patent/RU94037146A/en
Application granted granted Critical
Publication of RU2118839C1 publication Critical patent/RU2118839C1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements

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  • Physics & Mathematics (AREA)
  • Liquid Crystal (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

FIELD: electronics, radio engineering. SUBSTANCE: given invention is related to liquid-crystal screens with compensation of effect of nonuniform glow of screen caused by action of spurious capacitances between image electrodes and data wires. Formulated problem is solved in agreement with item 1 of formula of invention as liquid-crystal screen with active matrix incorporates first insulating substrate, assemblage of address wires, data wires and image elements formed on first insulating substrate. Each image element includes at least two image electrodes insulated from each other and at least two switching-type transistors. Drain of first transistor is connected to first data wire, drain of second transistor is connected to second image electrode. Source of first transistor is connected to first image electrode, source of second transistor is linked to second data wire and gates of first and second transistors are connected to first address wire, between first image electrode and address wire there are placed capacitance, between second image electrode and address wire-capacitance, between first image electrode and first data wire - capacitance, between second image electrode and second data wire - capacitance, second insulating substrate, assemblage of common electrodes formed on second insulating substrate. Each of these common electrodes is insulated from others and is placed above first and second image electrode. Liquid crystal positioned between first and second image electrodes and common electrode. Each image element has two additional capacitorsand,is connected to second data wire and to first image electrode andis linked to first data wire and to second image electrode. Formulated problem is solved in compliance with item 2 of formula of invention as two additional switching-type transistors are used in the capacity ofand. Formulated problem is solved in accordance with item 3 of formula of invention thanks to formation of capacitancesby overlapping of data and address wires by image electrodes. Same problem is solved in agreement with item 4 of formula of invention thanks to determination of values of capacitancesfrom equation. EFFECT: improved quality of compensation of effect of nonuniform glow of screen caused by action of spurious capacitances between image electrode and data wires.

Claims (1)

Изобретение относится к жидкокристаллическим экранам (ЖКЭ) с активной матрицей, в частности к ЖКЭ с компенсацией эффекта неравномерного свечения экрана, вызываемого влиянием паразитных емкостей между электродами изображения и шинами данных. Поставленная задача решается за счет того, что в ЖКЭ с активной матрицей содержащем первую изолирующую подложку, множество адресных шин, шин данных и элементов изображения, сформированных на первой изолирующей подложке, каждый элемент изображения содержит по крайней мере два переключающих транзистора (ТПТ), причем сток первого ТПТ присоединен к первой шине данных, сток второго ТПТ присоединен к второму электроду изображения, исток первого ТПТ присоединен к первому электроду изображения, исток второго ТПТ присоединен к второй шине данных и затворы первого и второго ТПТ присоединены к первой адресной шине, причем между первым электродом изображения и адресной шиной имеется емкость C'gs, между вторым электродом изображения и адресной шиной имеется емкость C''gs, между первым электродом изображения и первой шиной данных имеется емкость
Figure 00000001
между вторым электродом изображения и второй шиной данных имеется емкость
Figure 00000002
между первым электродом изображения и первой шиной данных имеется емкость
Figure 00000003
между вторым электродом изображения и второй шиной данных имеется емкость
Figure 00000004
вторую изолирующую подложку, множество общих электродов, сформированных на второй изолирующей подложке, причем каждый из этих общих электродов изолирован друг от друга и расположен над первым и вторым электродами изображения, жидкий кристалл, помещенный между первым и вторым электродами изображения и общим электродом каждый элемент изображения содержит два дополнительных конденсатора
Figure 00000005
причем
Figure 00000006
присоединен к второй шине данных и к первому электроду изображения, а
Figure 00000007
присоединен к первой шине данных и к второму электроду изображения. Поставленная задача решается за счет того, что в качестве
Figure 00000008
используются два дополнительных ТПТ, а также за счет того, что конденсаторы
Figure 00000009
сформированы путем перекрытия электродами изображения шин данных и адресных шин и величины конденсаторов
Figure 00000010
определяются из уравнений
Figure 00000011
The invention relates to liquid crystal screens (LCD) with an active matrix, in particular to LCD with compensation for the effect of uneven illumination of the screen caused by the influence of stray capacitances between the image electrodes and data buses. The problem is solved due to the fact that in an LCD with an active matrix containing a first insulating substrate, a plurality of address buses, data buses and image elements formed on the first insulating substrate, each image element contains at least two switching transistors (TPT), and the drain the first TFT is connected to the first data bus, the drain of the second TFT is connected to the second image electrode, the source of the first TFT is connected to the first image electrode, the source of the second TFT is connected to the second data bus and the gates of the first and second TFTs are connected to the first address bus, and between the first electrode of the image and the address bus has a C capacity 'gs, between the second electrode of the image and the address bus has a capacitance C''gs, between the first electrode of the image and the first data bus has a capacity
Figure 00000001
there is a capacitance between the second image electrode and the second data bus
Figure 00000002
there is a capacitance between the first image electrode and the first data bus
Figure 00000003
there is a capacitance between the second image electrode and the second data bus
Figure 00000004
a second insulating substrate, a plurality of common electrodes formed on the second insulating substrate, each of these common electrodes being isolated from each other and located above the first and second image electrodes, a liquid crystal placed between the first and second image electrodes and the common electrode each image element contains two additional capacitors
Figure 00000005
moreover
Figure 00000006
connected to the second data bus and to the first image electrode, and
Figure 00000007
connected to the first data bus and to the second image electrode. The problem is solved due to the fact that as
Figure 00000008
two additional TFTs are used, as well as due to the fact that capacitors
Figure 00000009
formed by overlapping with the electrodes the image of the data bus and address bus and the capacitor value
Figure 00000010
are determined from the equations
Figure 00000011
RU94037146A 1994-09-26 1994-09-26 Liquid-crystal screen with active matrix RU2118839C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RU94037146A RU2118839C1 (en) 1994-09-26 1994-09-26 Liquid-crystal screen with active matrix
KR1019950031884A KR100205378B1 (en) 1994-09-26 1995-09-26 Active matrix liquid crystal display element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94037146A RU2118839C1 (en) 1994-09-26 1994-09-26 Liquid-crystal screen with active matrix

Publications (2)

Publication Number Publication Date
RU94037146A true RU94037146A (en) 1996-09-20
RU2118839C1 RU2118839C1 (en) 1998-09-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU94037146A RU2118839C1 (en) 1994-09-26 1994-09-26 Liquid-crystal screen with active matrix

Country Status (2)

Country Link
KR (1) KR100205378B1 (en)
RU (1) RU2118839C1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100529572B1 (en) * 1998-05-13 2006-03-09 삼성전자주식회사 Thin film transistor liquid crystal display
EP2249200A4 (en) * 2008-02-27 2011-11-30 Sharp Kk Active matrix substrate, liquid crystal panel, liquid crystal display device, liquid crystal display unit, and television receiver
GB0807767D0 (en) * 2008-04-29 2008-06-04 Plastic Logic Ltd Off-set top pixel electrode configuration
EP2299317A4 (en) 2008-07-15 2011-12-21 Sharp Kk Display device
RU2475867C2 (en) * 2008-08-22 2013-02-20 Шарп Кабушики Каиша Image signal processing device and method, image reproducing device, television receiver, electronic device
EP2322983A4 (en) * 2008-08-27 2011-12-28 Sharp Kk Active matrix substrate, liquid crystal panel, liquid crystal display unit, liquid crystal display, television receiver, and method of manufacturing active matrix substrate
JP5306369B2 (en) * 2008-11-21 2013-10-02 シャープ株式会社 Substrate for display panel, display panel
TWI596403B (en) * 2016-11-21 2017-08-21 友達光電股份有限公司 Array substrate and display panel

Also Published As

Publication number Publication date
KR960011492A (en) 1996-04-20
KR100205378B1 (en) 1999-07-01
RU2118839C1 (en) 1998-09-10

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