(12) Laid Open Patent Publication (A)
`
`(19) Japanese Patent Agency (JP)
`
`(11) Publication Number:
`
`Unexamined Patent Application 2002657807
`(P2002-357807A)
`
`(43) Publication Date: 12.13.2002
`
`(51) Int. Cl.7
`G02F 1/133
`
`ID Code
`505
`
`mom.“
`
`1/1345
`1/1368
`
`Fl
`C02}?
`
`1/133
`
`1/1345
`1/1388
`
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`
`9/00
`
`348
`
`GOQF
`
`9/00
`
`Theme Code (ref.)
`505
`2H092
`
`2H 0 9 3
`50006
`
`348C 50080
`348L 50094
`
`Request for Examination: None; Number of Claims: 1; 0L (total 5 pages)
`
`
`(21)App caton No.: 2001-164473 (P2001-
`(71)App cant:
`000005821
`1644473)
`Matsush ta E ear c lndustr a Co.
`(22) Date of App cat on: 5.31.2001
`1006, Oaza Kadoma. Kadoma-sh ,
`Osaka
`
`(72) Inventor:
`
`Takash MAEDA
`Matsush ta E ectr c Industr a Co.
`
`(72) Inventor:
`
`1006. Oaza Kadoma. Kadoma-sh ,
`Osaka
`
`H rosh TABATA
`Matsush ta E ear c lndustr a C0.
`
`1006, Oaza Kadoma. Kadoma-sh .
`Osaka
`
`(74) Agent:
`
`100097445
`Fum o IWAHASHI, Benr sh
`(and 2 others)
`
`(cont nued on ast page)
`
`14
`
`LCD Controller \n
`
`I!
`
`Page 1 of 13
`
`Tianma Exhibit 1007
`
`(54) Title of Invention: quuld Crystal Dlsplay
`Devlce
`
`(57)[Abstract]
`PROBLEM TO BE SOLVED: In a convent ona qu d
`crysta d sp ay pane , when connect ng a pr nted
`crcu t board 13 for suppy ng varous drve sgnas
`through a source dr ver us ng TAB mount ng requ res
`the use of a separate FPC for supp y ng dr ve s gna s,
`wh ch ed to the probern of ncreased man hours n
`the packag ng step and h gher costs.
`SOLUTION MEANS: Mu t p e thm-e ectrodes are
`prov ded on the efl and r ght edges wth n the source
`dr ver TCP used n TAB packag ng.
`
` Mu t pexer
`
`
`
`"lg-13E.fi!E7351
`”iam—
`
`‘°‘\
`
`

`

`
`[Claims]
`Claim 1: A liquid crystal display device having: a polycrystalline silicon TFT liquid crystal
`panel with pixels formed of multiple scan electrodes, multiple signal electrodes, and
`liquid crystal; a gate driver for driving the multiple scanning electrodes; and multiple
`TAB (Tape Automated Bonding) mounted source drivers for driving the multiple signal
`electrodes; wherein a drive circuit ("multiplexer" below) capable of displaying images by
`switching the multiple signal electrodes with a switch is disposed on the same glass
`substrate as the pixels, so that the pixels can be driven via the multiple scan electrodes
`and multiple signal electrodes by driving the multiple gate drivers and the multiple
`source drivers, and images can be displayed on the liquid crystal panel by driving those
`pixels, and multiple pixels can be driven with respect to a single output of the multiple
`source drivers; whereby utilizing wiring inside a TCP (Tape Carrier Package) as a signal
`supply means for driving the multiplexer, multiple thru-electrodes are wired on both
`sides of an electrode supplying a drive signal to the TCP source driver disposed closest
`to the gate driver, [while] a drive signal to the gate drivers is supplied to the electrode
`closest to the gate driver, and the multiplexer drive signal is supplied to the other
`electrode.
`
`[Detailed Explanation of the Invention]
`[0001]
`[Technical Field of the Invention] This invention pertains to a liquid crystal display device
`formed of polycrystalline silicon TFT.
`
`[0002]
`[Conventional Art] In liquid crystal display devices formed of amorphous silicon, only
`pixel TFTs could be formed on a glass substrate. In recent years liquid crystal display
`devices have been developed in which, by using polycrystalline silicon TFTs
`manufactured by low temperature or high temperature processes, drive circuits such as
`source drivers and gate drivers are formed on the same glass substrate as the pixel
`portion.
`
`
`
`2
`
`Page 2 of 13
`
`

`

`
`[0003] However, polycrystalline silicon TFT has the problem that its operating frequency
`is low: approximately 1/10th that of LSI formed from monocrystalline silicon. Whereas
`monocrystalline silicon operates at up to several tens of MHz, the operating frequency
`of polycrystalline silicon does not even reach 10 MHz. At this operating frequency, video
`signals supplied from the monitors, TV, etc., cannot be processed without modification.
`
`[0004] A means is therefore used by which source drivers are formed of monocrystalline
`silicon, mounted by TAB (Tape Automated Bonding) or COG (Chip On Glass), and
`supplied from the outside. Recently liquid crystal display devices have been developed
`in which, to reduce the number of these source drivers, circuits called multiplexers are
`formed on the same glass substrate as the pixel. A multiplexer is a circuit in which
`multiple signal electrodes are provided for a single source driver output so that, by
`switching with a switch, multiple pixels can be driven by a single source driver output.
`
`[0005]
`[Problem the Invention Seeks to Solve] The problem, however, is that with COG
`mounting, when signals to source drivers are supplied from outside, such as from a
`printed circuit board, they are supplied by a flexible printed circuit (FPC), therefore
`signal lines to drive a multiplexer inside the FPC can be constituted just by mounting an
`FPC, but with TAB mounting, supplying signals to drive the multiplexer requires a
`separate FPC mounting in addition to the TAB mounting. Figure 4 is a configuration
`diagram of a conventional liquid crystal display device. In Fig. 4, supplying signals to
`driver multiplexer 3 requires the use of a separate FPC19, and FPC19 mounting is
`required in addition to TAB mounting, thereby increasing labor hours and cost for the
`mounting step.
`
`[0006] Therefore the purpose of present invention is to provide a liquid crystal display
`device that can be implemented using only TAB mounting, without the use of FPC,
`when supplying multiplexer drive signals.
`
`
`
`3
`
`Page 3 of 13
`
`

`

`
`[0007]
`[Means for Solving the Problem] As a means for solving the above problem, the liquid
`crystal display device of the Claim 1 invention provides multiple thru-electrodes at the
`left and right sides within the source driver TCP used in TAB mounting. In the Claim 1
`invention, at the electrode inside the TCP for the source drive closest to the gate driver,
`supplying the gate driver drive signal to the electrode closest to the gate driver and
`supplying the multiplexer drive signal to the other electrode allows wiring to be
`[arranged] on the glass substrate so that the multiplexer drive signal and the signal
`electrode do not cross, and, in the liquid crystal display device packaging step, [the
`device] can be constituted by TAB mounting alone.
`
`[0008] [Embodiments of Invention] Below, referring to the figures, we explain
`embodiments of the present invention.
`
`[0009] Figure 1 represents a liquid crystal display according to an embodiment of the
`invention. In Fig. 1, a polycrystalline silicon liquid crystal panel and a printed circuit
`board 13 constituted by a power supply portion 7 or LCD controller 8 are connected via
`multiple source drivers 2 using a TAB mounting. Multiplexer 3 is explained in Fig. 2.
`
`[0010] Figure 2 shows the structure of multiplexer 3. n signal lines are connected to a
`single output of source drivers 2 via switches SW1, SW2,...SWn formed of
`polycrystalline silicon; signals CTR1, CTR2,...CTRn for controlling these switches are
`controlled to turn on in sequence, at which time n number of pixels can be driven by
`time division of a single source driver output into n number of signals.
`
`[0011] Figure 3 shows the structure of source driver 2. In Fig. 2, multiple thru-electrodes
`on both sides of an electrode for supplying a source driver drive signal are wired; a gate
`driver 1 drive signal is applied to signal 10 on the side closest to gate driver 1, and a
`multiplexer 3 drive signal is applied to the other signal 12.
`
`
`
`
`4
`
`Page 4 of 13
`
`

`

`
`[0012] In this configuration, all drive signals required for gate driver 1, source driver 2,
`and multiplexer 3 can be supplied via source driver 2 using TAB mounting alone. Also,
`by separately supplying gate driver drive signal 10 and multiplexer drive signal 12 to
`thru-electrodes in two areas disposed within the source driver 2 TCP, [the device] can
`be wired so that the various signal lines do not cross on the glass substrate of
`polycrystalline silicon liquid crystal panel 14. Needless to say, in the present invention
`the same effect can be obtained in liquid crystal display devices which supply scanning
`signals from both sides.
`
`[0013]
`[Effect of the Invention] Using the above-described embodiment of the invention, in a
`liquid crystal display device in which source drivers are TAB mounted, driving is by a
`multiplexer and, by wiring the signals driving the multiplexer within the TCP, the liquid
`crystal display device can be formed without the various types of signal lines crossing
`using TAB mounting alone, which has significant industrial value.
`
`[Brief Description of Figures]
`Fig. 1: A diagram showing an embodiment of a liquid crystal display device.
`Fig. 2: A configuration diagram of multiplexer 3 in the above embodiment.
`Fig. 3: A configuration diagram of source driver 2 in the above embodiment.
`Fig. 4: A configuration diagram of a conventional liquid crystal display device.
`
`[Explanation of Reference Numerals]
`1: gate driver
`2: source driver
`3: multiplexers
`4: polycrystalline silicon TFT
`5: liquid crystal layer
`6: common electrodes
`7: power supply
`
`
`
`5
`
`Page 5 of 13
`
`

`

`8: LCD controller
`
`9: data signals
`
`10: gate driver drive signal
`
`11: source driver drive signal
`
`12: multiplexer drive signal
`
`13: printed circuit board
`
`14: polycrystalline silicon LCD panel
`
`15: signal line
`
`16: source driver IC
`
`17: electrode
`
`18: tape
`
`19: FPC
`
`G1: scanning Electrode
`
`CTR1, CTR2,... CTRN: multiplexer drive signals
`
`SW1, SW2,... SWn: polycrystalline silicon switch
`
`Fig. 1
`
`
`Fig. 2
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`Page 6 of 13
`
`

`

`Fig. 3
`
`Fig. 4
`
`1|
`
`
`9
`
`82
`
`5 §(
`
`Continued from front page:
`
`(51)]nt. (:1.7
`G09F‘
`
`9/30
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`3302 5G435
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`Page 7 of 13
`
`7
`
`

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`Page 10 of 13
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`

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`W4)002*357807(P2002i357807A)
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`Page 11 of 13
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`

`

`5(5) 002*357807 (P2002i357807A)
`
`33<M$%)2m%G%OMMG%OMMJm2
`J331 3304 N325 3301
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`23093 3001 3034 3054 3301
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`Page 12 of 13
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`Page 12 of 13
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`

`

` Christopher Field
`Japanese Technical Interpreting and Translation
`52 Sherman’s Bridge Rd., Wayland MA 01778 Tel. 617-905-6060
`www.christopherfield.com
`
`CERTIFICATION OF TRANSLATION
`
`
`
`
`I, Christopher L. Field, residing at 52 Sherman’s Bridge Rd., Wayland MA, 01778,
`United States of America, declare and state as follows:
`
`I am well acquainted with the English and Japanese languages. I have translated
`numerous Japanese documents of legal and/or technical content into English. I
`am fully accredited by the American Translators Association for Japanese to
`English translation.
`
`I hereby certify that the English translation of the document entitled "Japanese
`Unexamined Patent Application 2002-357807" is, to the best of my knowledge and
`ability, an accurate translation.
`
` I
`
` further declare that all statements made herein of my own knowledge are true,
`that all statements made on information and belief are believed to be true, and
`that false statements and the like are punishable by fine and imprisonment, or
`both, under Section 1001 of Title 18 of the United States Code.
`
`
`
`Signed,
`
`
`
`Christopher Field
`
`13 April 2021
`
`
`
`
`
`Page 13 of 13
`
`