WO2018201519A1 - 移位暂存电路及其应用的显示面板 - Google Patents
移位暂存电路及其应用的显示面板 Download PDFInfo
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- WO2018201519A1 WO2018201519A1 PCT/CN2017/084673 CN2017084673W WO2018201519A1 WO 2018201519 A1 WO2018201519 A1 WO 2018201519A1 CN 2017084673 W CN2017084673 W CN 2017084673W WO 2018201519 A1 WO2018201519 A1 WO 2018201519A1
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- Prior art keywords
- switch
- electrically coupled
- node
- pull
- shift register
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- 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
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- 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
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
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- 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
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
Definitions
- the present application relates to a circuit structure in a display, and more particularly to a display panel for a shift register circuit and its application.
- planar liquid crystal display driving circuit is mainly composed of an external IC connected to the panel, but this method cannot reduce the cost of the product and can not make the panel thinner.
- a liquid crystal display device usually has a gate driving circuit, a source driving circuit, and a pixel array.
- the pixel array has a plurality of pixel circuits, each pixel circuit is turned on and off according to the squaring signal provided by the gate driving circuit, and displays the data picture according to the data signal provided by the source driving circuit.
- the gate driving circuit usually has a multi-stage shift register, and outputs the scanning signal to the pixel array by means of the first-stage shift register being transferred to the next-stage shift register.
- the pixel circuit is sequentially turned on to enable the pixel circuit to receive the data signal.
- the gate driving circuit is directly fabricated on the array substrate instead of the driving chip fabricated by the external connection IC.
- This is called Gate On Array (GOA) technology.
- Applications can be used directly around the panel, reducing production processes, reducing product costs and making the panel thinner.
- the potential pull-down of the current Gate Array Drive (GOA) technology is controlled by two sets of signals, with a duty cycle of 50%. Under such conditions, the transistors responsible for the pull-down potential will be in a positive voltage state for a long time and cannot be sufficiently rested, which will cause the reliability of these transistors to rapidly drop, thereby directly causing a drop in display quality or even damage to the display device. Therefore, how to improve the above-mentioned conventional gate array driving circuit substrate technology is lacking, and thus a shift temporary storage circuit with low manufacturing cost and easy processing is proposed.
- an object of the present application is to provide a shift temporary storage circuit, in which an active switch is newly added to be responsible for generating a feedback signal, and the active switch is only responsible for By controlling the feedback signal, the waveform is decremented without going through the load of the main circuit, thereby improving the reliability and service life of the product.
- a shift register circuit includes a multi-stage shift register, each shift register includes: a first switch, a control end of the first switch is electrically coupled to a first node, A first end of the first switch is electrically coupled to a frequency signal, a second end of the first switch is electrically coupled to an output pulse signal, and a second switch is controlled by the second switch.
- the first end of the second switch is electrically coupled to the control signal, and the second end of the second switch is electrically coupled to the first node; a third switch, a control end of the third switch is electrically coupled to the first node, and a first end of the third switch is electrically coupled to the frequency
- the second end of the third switch is electrically coupled to a control signal; and a fourth switch, a control end of the fourth switch is electrically coupled to the first node, and the fourth switch A first end is electrically coupled to the frequency signal, and a second end of the fourth switch is electrically coupled to generate a feedback signal.
- a liquid crystal display panel comprising: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; And further comprising the shift temporary storage circuit disposed on the first substrate or the second substrate. And further comprising a first polarizer disposed on an outer surface of the first substrate; and a second polarizer disposed on an outer surface of the second substrate, wherein the first polarizer and the second The polarization directions of the polarizers are parallel to each other.
- a first pull-down circuit is further included, the first pull-down circuit includes a fifth switch, and a control end of the fifth switch is electrically coupled to a feedback signal.
- a first end of the fifth switch is electrically coupled to the first node, and a second end of the fifth switch is electrically coupled to the low preset potential.
- the first pull-down circuit is configured to pull down a potential of the control terminal of the fifth switch.
- a second pull-down circuit is further included, the second pull-down circuit includes a sixth switch and a seventh switch, and a control end of the sixth switch is electrically coupled to a second a first end of the sixth switch is electrically coupled to the output pulse signal, and a second end of the sixth switch is electrically coupled to the low preset potential.
- a control end of the seventh switch is electrically coupled to a second node, and a first end of the seventh switch is electrically coupled to the first node, where the A second end of the seven switch is electrically coupled to the low preset potential.
- the second pull-down circuit is configured to pull down a potential of the control terminal of the sixth switch.
- a third pull-down circuit is further included, the third pull-down circuit includes an eighth switch and a ninth switch, and a control end of the eighth switch is electrically coupled to a third a first end of the eighth switch is electrically coupled to the output pulse signal, and a second end of the eighth switch is electrically coupled to the low preset potential.
- a control terminal of the ninth switch is electrically coupled to a third node, and a first end of the ninth switch is electrically coupled to the first node, where A second end of the nine switch is electrically coupled to the low preset potential.
- the third pull-down circuit is configured to pull down a potential of the control terminal of the eighth switch.
- a pull-down circuit controller is electrically coupled to a low frequency signal, a third node, the feedback signal, and the low preset in the shift register. Potential.
- an active switch is newly responsible for generating a feedback signal, and the active switch is only responsible for controlling the feedback signal, and does not need to pass the load of the main circuit, thereby causing the waveform to decrease, thereby improving the reliability and service life of the product.
- Figure 1a is a schematic diagram of an exemplary liquid crystal display.
- FIG. 1b is a schematic diagram of a liquid crystal display according to an embodiment of the present application.
- 2a is a schematic diagram of an exemplary shift register circuit.
- FIG. 2b is a schematic diagram of a shift temporary storage circuit according to an embodiment of the present application.
- FIG 3 is a schematic view of a liquid crystal display panel according to another embodiment of the present application.
- the word “comprising” is to be understood to include the component, but does not exclude any other component.
- “on” means located above or below the target component, and does not mean that it must be on the top based on the direction of gravity.
- the liquid crystal panel of the present application may include a thin film transistor (TFT) substrate, a color filter (CF) substrate, and a liquid crystal layer formed between the two substrates.
- TFT thin film transistor
- CF color filter
- the liquid crystal panel of the present application may be a curved display panel.
- the active array (TFT) and the color filter layer (CF) of the present application may be formed on the same substrate.
- FIG. 1a is a schematic diagram of an exemplary liquid crystal display.
- a liquid crystal display 10 includes a color filter substrate 100, an active array substrate 110, and a driving chip 103 for driving the circuit.
- FIG. 1b is a schematic diagram of a liquid crystal display according to an embodiment of the present application.
- a liquid crystal display 11 having a gate array driving includes a color filter substrate 100, an active array substrate 110, and a gate array driver.
- the actuator 105 is configured to form a gate driving circuit on the array substrate 110.
- a shift register circuit 12 includes a multi-stage shift register.
- Each shift register includes a first switch T10, and a control terminal 101a of the first switch T10 is electrically coupled to the first switch T10.
- a first node Q(n) a first end 101b of the first switch T10 is electrically coupled to a frequency signal HCK, and a second end 101c of the first switch T10 is electrically coupled to an output pulse signal G.
- a second switch T20 a control terminal 201a of the second switch T20 is electrically coupled to a control signal F(n-1), and a first end 201b of the second switch T20 is electrically coupled Connected to the control signal F(n-1), a second end 201c of the second switch T20 is electrically coupled to the first node Q(n); and a third switch T30, the third switch A control terminal 301a of the T30 is electrically coupled to the first node Q(n), a first end 301b of the third switch T30 is electrically coupled to the frequency signal HCK, and one of the third switches T30 The second end 301c is electrically coupled to a control signal F(n).
- the first pull-down circuit 120 further includes a fifth switch T50, and a control terminal 501a of the fifth switch T50 is electrically coupled to an output pulse signal.
- G (n+x) a first end 501b of the fifth switch T50 is electrically coupled to the first node Q(n), and a second end 501c of the fifth switch T50 is electrically coupled
- Vss The low preset potential
- the first pull-down circuit 120 is configured to pull down the potential of the control terminal 501a of the fifth switch T50.
- a second pull-down circuit 122 is further included.
- the second pull-down circuit 122 includes a sixth switch T60 and a seventh switch T70.
- the control terminal 601a of the sixth switch T60 is electrically coupled.
- a second node K(n) a first end 601b of the sixth switch T60 is electrically coupled to the output pulse signal G(n)
- a second end 601c of the sixth switch T60 is electrically coupled
- the low preset potential Vss is connected.
- a control terminal 701a of the seventh switch T70 is electrically coupled to a second node K(n), and a first end 701b of the seventh switch T70 is electrically coupled to the first The node Q(n), a second end 701c of the seventh switch T70 is electrically coupled to the low preset potential Vss.
- the second pull-down circuit 122 is configured to pull down the potential of the control terminal 601a of the sixth switch T60.
- a third pull-down circuit 124 is further included.
- the third pull-down circuit 124 includes an eighth switch T80 and a ninth switch T90.
- the control terminal 801a of the eighth switch T80 is electrically coupled.
- a third node P(n) a first end 801b of the eighth switch T80 is electrically coupled to the output pulse signal G(n), and a second end 801c of the eighth switch T80 is electrically coupled
- the low preset potential Vss is connected.
- a control terminal 901a of the ninth switch T90 is electrically coupled to a third node P(n), and a first end 901b of the ninth switch T90 is electrically coupled to the first Node Q(n), a second end 901c of the ninth switch T90 is electrically coupled The low preset potential Vss.
- the third pull-down circuit 124 is configured to pull down the potential of the control terminal 801a of the eighth switch T80.
- a pull-down circuit controller 130 is further coupled to a low frequency signal LCK, a third node P(n), and the first node Q(n) in the shift register. And the low preset potential Vss.
- a shift register circuit 13 of the present application includes a multi-stage shift register.
- Each shift register includes a first switch T10, and a control terminal 101a of the first switch T10 is electrically coupled.
- a first end 101b of the first switch T10 is electrically coupled to a frequency signal HCK, and a second end 101c of the first switch T10 is electrically coupled to an output pulse.
- the second terminal 201c of the second switch T20 is electrically coupled to the first node Q(n), and the third switch T30 is configured to be coupled to the control signal F(n-1).
- a control terminal 301a of the switch T30 is electrically coupled to the first node Q(n), a first end 301b of the third switch T30 is electrically coupled to the frequency signal HCK, and the third switch T30 is A second terminal 301c is electrically coupled to a control signal F(n); and a fourth switch T40, a control terminal 401a of the fourth switch T40 is electrically coupled to the first node Q(n).
- Said a fourth switch T40 Terminal 401b is electrically coupled to the frequency signal HCK, a second end 401c of the fourth switch T40 is electrically coupled to generate a feedback signal Fb (n).
- the first pull-down circuit 120 further includes a fifth switch T50, and a control terminal 501a of the fifth switch T50 is electrically coupled to a feedback signal.
- Fb(n+x) a first end 501b of the fifth switch T50 is electrically coupled to the first node Q(n)
- a second end 501c of the fifth switch T50 is electrically coupled
- the low preset potential Vss is described.
- the first pull-down circuit 120 is configured to pull down the potential of the control terminal 501a of the fifth switch T50.
- a second pull-down circuit 122 is further included.
- the second pull-down circuit 122 includes a sixth switch T60 and a seventh switch T70.
- the control terminal 601a of the sixth switch T60 is electrically coupled.
- a second node K(n) a first end 601b of the sixth switch T60 is electrically coupled to the output pulse signal G(n)
- a second end 601c of the sixth switch T60 is electrically coupled
- the low preset potential Vss is connected.
- a control terminal 701a of the seventh switch T70 is electrically coupled to a second node K(n), and a first end 701b of the seventh switch T70 is electrically coupled to the first The node Q(n), a second end 701c of the seventh switch T70 is electrically coupled to the low preset potential Vss.
- the second pull-down circuit 122 is configured to pull down the potential of the control terminal 601a of the sixth switch T60.
- a third pull-down circuit 124 is further included.
- the third pull-down circuit 124 includes an eighth switch T80 and a ninth switch T90.
- the control terminal 801a of the eighth switch T80 is electrically coupled.
- a third node P(n) a first end 801b of the eighth switch T80 is electrically coupled to the output pulse signal G(n), and a second end 801c of the eighth switch T80 is electrically coupled
- the low preset potential Vss is connected.
- a control terminal 901a of the ninth switch T90 is electrically coupled to a third node P(n), and a first end 901b of the ninth switch T90 is electrically coupled to the first The node Q(n), a second end 901c of the ninth switch T90 is electrically coupled to the low preset potential Vss.
- the third pull-down circuit 124 is configured to pull down the potential of the control terminal 801a of the eighth switch T80.
- the pull-down circuit controller 130 is further coupled to a low frequency signal LCK, a third node P(n), and the feedback signal Fb (n) in the shift register. And the low preset potential Vss.
- FIG. 3 is a schematic diagram of a liquid crystal display panel according to another embodiment of the present application.
- a liquid crystal display panel 30 includes: a first substrate 301 (eg, an active array substrate); a second substrate 302 (eg, a color filter substrate), and The first substrate 301 is disposed opposite to each other; the liquid crystal layer 303 is disposed between the first substrate 301 and the second substrate 302; and further includes the shift temporary storage circuit 13 disposed on the first substrate 301 is between the second substrate 302 (for example, on the surface of the first substrate 301).
- first polarizer 306 disposed on an outer surface of the first substrate 301; and a second polarizer 307 disposed on an outer surface of the second substrate 302, wherein the first polarizer 306
- the polarization directions with the second polarizer 307 are parallel to each other.
- an active switch is newly responsible for generating a feedback signal, and the active switch is only responsible for controlling the feedback signal, and does not need to pass the load of the main circuit, thereby causing the waveform to decrease, thereby improving the reliability and the service life of the product.
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Abstract
Description
Claims (16)
- 一种移位暂存电路,包括多级移位寄存器,每一移位寄存器包括:一第一开关,所述第一开关的一控制端电性耦接一第一节点,所述第一开关的一第一端电性耦接一频率讯号,所述第一开关的一第二端电性耦接一输出脉冲讯号;一第二开关,所述第二开关的一控制端电性耦接一控制讯号,所述第二开关的一第一端电性耦接所述控制讯号,所述第二开关的一第二端电性耦接所述第一节点;一第三开关,所述第三开关的一控制端电性耦接所述第一节点,所述第三开关的一第一端电性耦接所述频率讯号,所述第三开关的一第二端电性耦接一控制讯号;以及一第四开关,所述第四开关的一控制端电性耦接所述第一节点,所述第四开关的一第一端电性耦接所述频率讯号,所述第四开关的一第二端电性耦接产生一回授讯号。
- 如权利要求1所述的移位暂存电路,更包括一第一下拉电路,所述第一下拉电路包括一第五开关,所述第五开关的一控制端电性耦接一回授讯号,所述第五开关的一第一端电性耦接所述第一节点,所述第五开关的一第二端电性耦接所述低预设电位。
- 如权利要求2所述的移位暂存电路,其中所述第一下拉电路,用以下拉所述第五开关的所述控制端的电位。
- 如权利要求1所述的移位暂存电路,更包括一第二下拉电路,所述第二下拉电路包括一第六开关及一第七开关,所述第六开关的一控制端电性耦接一第二节点,所述第六开关的一第一端电性耦接所述输出脉冲讯号,所述第六开关的一第二端电性耦接所述低预设电位。
- 如权利要求4所述的移位暂存电路,其中所述第七开关的一控制端电性耦接一第二节点,所述第七开关的一第一端电性耦接所述第一节点,所述第七开关的一第二端电性耦接所述低预设电位。
- 如权利要求4所述的移位暂存电路,其中所述第二下拉电路,用以下拉所述第六开关的所述控制端的电位。
- 如权利要求1所述的移位暂存电路,更包括一第三下拉电路,所述第三下拉电路包括一第八开关及一第九开关,所述第八开关的一控制端电性耦接一第三节点,所述第八开关的一第一端电性耦接所述输出脉冲讯号,所述第八开关的一第二端电性耦接所述低预设电位。
- 如权利要求7所述的移位暂存电路,其中所述第九开关的一控制端电性耦接一第三节点,所述第九开关的一第一端电性耦接所述第一节点,所述第九开关的一第二端电性耦接所述低预设电位。
- 如权利要求7所述的移位暂存电路,其中所述第三下拉电路,用以下拉所述第八开关的所述控 制端的电位。
- 如权利要求1所述的移位暂存电路,更包括一下拉电路控制器,电性耦接于所述移位寄存器中的一低频频率讯号、一第三节点、所述回授讯号及所述低预设电位。
- 一种液晶显示面板,包括:第一基板;第二基板,与所述第一基板相对设置;液晶层,设置于所述第一基板与所述第二基板之间;第一偏光片设置于所述第一基板的一外表面上;以及第二偏光片设置于所述第二基板的一外表面上,其中所述第一偏光片与所述第二偏光片的偏振方向为互相平行;以及移位暂存电路,设置于所述第一基板或所述第二基板上。
- 如权利要求11所述的液晶显示面板,其中所述移位暂存电路,包括:一第一开关,所述第一开关的一控制端电性耦接一第一节点,所述第一开关的一第一端电性耦接一频率讯号,所述第一开关的一第二端电性耦接一输出脉冲讯号;一第二开关,所述第二开关的一控制端电性耦接一控制讯号,所述第二开关的一第一端电性耦接所述控制讯号,所述第二开关的一第二端电性耦接所述第一节点;一第三开关,所述第三开关的一控制端电性耦接所述第一节点,所述第三开关的一第一端电性耦接所述频率讯号,所述第三开关的一第二端电性耦接一控制讯号;以及一第四开关,所述第四开关的一控制端电性耦接所述第一节点,所述第四开关的一第一端电性耦接所述频率讯号,所述第四开关的一第二端电性耦接产生一回授讯号。
- 如权利要求12所述的液晶显示面板,其中所述移位暂存电路更包括一第一下拉电路,所述第一下拉电路包括一第五开关,所述第五开关的一控制端电性耦接一回授讯号,所述第五开关的一第一端电性耦接所述第一节点,所述第五开关的一第二端电性耦接所述低预设电位。
- 如权利要求12所述的液晶显示面板,其中所述移位暂存电路更包括一第二下拉电路,所述第二下拉电路包括一第六开关及一第七开关,所述第六开关的一控制端电性耦接一第二节点,所述第六开关的一第一端电性耦接所述输出脉冲讯号,所述第六开关的一第二端电性耦接所述低预设电位。
- 如权利要求12所述的液晶显示面板,其中所述移位暂存电路更包括一第三下拉电路,所述第三下拉电路包括一第八开关及一第九开关,所述第八开关的一控制端电性耦接一第三节点,所述第八开关的一第一端电性耦接所述输出脉冲讯号,所述第八开关的一第二端电性耦接所述低预设电位。
- 如权利要求12所述的液晶显示面板,其中所述移位暂存电路更包括一下拉电路控制器,电性耦接于所述移位寄存器中的一低频频率讯号、一第三节点、所述回授讯号及所述低预设电位。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US15/555,891 US20180322840A1 (en) | 2017-05-05 | 2017-05-17 | Shift register circuit and display panel using same |
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Application Number | Priority Date | Filing Date | Title |
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CN201710313146.5 | 2017-05-05 | ||
CN201710313146.5A CN107016973A (zh) | 2017-05-05 | 2017-05-05 | 移位暂存电路及其应用的显示面板 |
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WO2018201519A1 true WO2018201519A1 (zh) | 2018-11-08 |
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CN108231033A (zh) | 2018-03-08 | 2018-06-29 | 惠科股份有限公司 | 阵列基板及显示面板 |
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