CN104635362A - Display panel and display equipment using same - Google Patents

Display panel and display equipment using same Download PDF

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Publication number
CN104635362A
CN104635362A CN201310554960.8A CN201310554960A CN104635362A CN 104635362 A CN104635362 A CN 104635362A CN 201310554960 A CN201310554960 A CN 201310554960A CN 104635362 A CN104635362 A CN 104635362A
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CN
China
Prior art keywords
voltage
substrate
display panel
thin film
film transistor
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Pending
Application number
CN201310554960.8A
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Chinese (zh)
Inventor
李国豪
周国龙
潘树林
陈春成
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Innolux Corp
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Innolux Display Corp
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Filing date
Publication date
Application filed by Innolux Display Corp filed Critical Innolux Display Corp
Priority to CN201310554960.8A priority Critical patent/CN104635362A/en
Publication of CN104635362A publication Critical patent/CN104635362A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/1306Details
    • G02F1/1309Repairing; Testing

Abstract

The invention discloses a display panel which comprises a first base plate, a plurality of thin film transistors, a first driver element, a second base plate, a shared electrode layer, a power management unit and a short circuit detecting unit, wherein the thin film transistors are formed on the first base plate, the first driver element is formed on the first base plate and connected with grid electrodes of the thin film transistors through a plurality of first conductive cables, the second base plate and the first base plate are arranged face to face, and the shared electrode layer is formed on the second base plate; the power management unit outputs one or more first voltages, one or more second voltages and one or more third voltages, the first driver element controls the conduction of the thin film transistors through the first voltages, the first driver element controls the closing of the thin film transistors through the second voltages, and the third voltages are provided for the shared electrode layer to be used as reference voltages of the display panel; the short circuit detecting unit is in electric connection with the first base plate and the second base plate and used for detecting a current between the first base plate and the second base plate, and outputs a control signal.

Description

Display panel and use the display device of this display panel
Technical field
The present invention relates to a kind of display panel and use the display device of this display panel.
Background technology
The panel (Panel) of liquid crystal display has about two glass substrates coincided usually: thin film transistor (TFT) (Thin-film transistor, be called for short TFT) substrate and colorized optical filtering (Color filter, abbreviation CF) substrate.This thin film transistor base plate is formed with thin film transistor (TFT) and connects the electric conduction routing such as sweep trace and data line of this thin film transistor (TFT), this colored filter substrate is then formed with shared electrode layer, and is distributed with sept (spacer) between two substrates to maintain the gap of fixed thickness.But the manufacturing process of display pannel has impurity unavoidably and comes across in the gap of two substrates, or when panel is subject to pressed by external force and the sept caused wherein is crushed, all may cause the short circuit phenomenon of electric conduction routing and shared electrode layer.
The common short-circuit protection of current display pannel utilizes power circuit chip; voltage for exception is excessive or electric current is excessive and starting protection is machine-processed; and the short-circuit current of 300mA is less than for numerical value between above-mentioned two substrates; then cannot effectively be protected; if but this type of small area analysis continues to flow in display pannel; the accumulation of heat and overheated will be caused, and injury or burn the pixel of part.
Summary of the invention
The object of the present invention is to provide a kind of new display panel technology, with to control and improve between aforesaid substrate because of fractional value short-circuit current accumulation caused by problem.
For reaching this object, according to an aspect of the present invention, an embodiment provides a kind of display panel, and it comprises: a first substrate; Multiple thin film transistor (TFT), is formed on this first substrate; One first driver element, is formed on this first substrate, and connects the grid of described thin film transistor (TFT) respectively via many first electric conduction routing; One second substrate, is arranged face-to-face with this first substrate; One shared electrode layer, is formed on this second substrate; One Power Management Unit, export at least one first voltage, one second voltage and a tertiary voltage, this first voltage controls the use of described thin film transistor (TFT) conducting as this first driver element, this second voltage controls the use of described thin film transistor (TFT) closedown as this first driver element, and this tertiary voltage is supplied to this shared electrode layer using the reference voltage as this display panel; And a short detection unit, be electrical connected with this first substrate and this second substrate, detect the electric current between this first substrate and this second substrate, and export a control signal.
According to a further aspect in the invention, another embodiment provides a kind of display device, and it comprises a display panel, and this display panel comprises: a first substrate; Multiple thin film transistor (TFT), is formed on this first substrate; One first driver element, is formed on this first substrate, and connects the grid of described thin film transistor (TFT) respectively via many first electric conduction routing; One second substrate, is arranged face-to-face with this first substrate; One shared electrode layer, is formed on this second substrate; One Power Management Unit, export at least one first voltage, one second voltage and a tertiary voltage, this first voltage controls the use of described thin film transistor (TFT) conducting as this first driver element, this second voltage controls the use of described thin film transistor (TFT) closedown as this first driver element, and this tertiary voltage is supplied to this shared electrode layer using the reference voltage as this display panel; And a short detection unit, be electrical connected with this first substrate and this second substrate, detect the electric current between this first substrate and this second substrate, and export a control signal.
In one embodiment, this display panel can comprise one second driver element further, and connects the drain electrode of described thin film transistor (TFT) respectively via many second electric conduction routing (data line).
In one embodiment, this short detection unit detect this electric current can between 5mA and 300mA.
In one embodiment, this first voltage and this second voltage directly can be supplied to this first driver element, and this control signal can make this Power Management Unit have the ability cutting off output voltage.
In one embodiment, the voltage difference of this first voltage and this second voltage can be greater than 20V.
In one embodiment, this display panel can comprise an accurate deviator further, and it accepts this first voltage and this second voltage, and exports one the 4th voltage and one the 5th voltage, to be supplied to this first driver element; Wherein, the voltage difference of the 4th voltage and the 5th voltage is greater than the voltage difference of this first voltage and this second voltage.This control signal can make this Power Management Unit or this accurate deviator have the ability cutting off output voltage.
In one embodiment, the voltage difference of the 4th voltage and the 5th voltage can be greater than 20V, and the voltage difference of this first voltage and this second voltage can be less than 3.5V.
Compared with prior art, beneficial effect of the present invention is:
By introducing short detection unit in the present invention, can occur in order to detect the short circuit whether having small area analysis value between first substrate and second substrate, such as, short-circuit current between 5mA and 300mA.When producing this type of short-circuit current between first substrate and second substrate, this short detection unit will send the control signal of high level, thus this Power Management Unit was lost efficacy or there is the ability cutting off output voltage, prevent above-mentioned small area analysis value short-circuit current from continuing to flow in the pixel of injury part in display panel.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the display panel of the embodiment of the present invention;
Fig. 2 is the cross-sectional view of the display panel of the embodiment of the present invention;
Fig. 3 is the circuit diagram of the display panel of another embodiment of the present invention;
Fig. 4 is the circuit diagram of the display panel of another embodiment of the present invention;
Fig. 5 is the circuit diagram of the short detection unit of the present embodiment;
Fig. 6 is the structural representation of the display device according to the embodiment of the present invention, and this display device comprises the display panel of a foundation previous embodiment.
Description of reference numerals: 10-display device; 20/100/200/300-display panel; 110-first substrate; 116-first electric conduction routing; 118-second electric conduction routing; 112-thin film transistor (TFT); 120-second substrate; 122-shared electrode layer; 132-pixel electrode; 130-scan drive cell; 140-data drive unit; 150-Power Management Unit; 160-short detection unit; 162-current sensor; 164-compares decision-making circuit; 166-voltage operational amplifier; 170-sept; 180-liquid crystal; The accurate deviator in 190-position.
Embodiment
For there being further cognitive and understanding to feature of the present invention, object and function, hereby coordinate graphic detailed description embodiments of the invention as rear.In all instructionss and diagram, will identical component numerals be adopted to specify same or similar assembly.
In the explanation of each embodiment, when an element is described in another element " top/on " or " below/under ", refer to directly or situation indirectly on or below this another element, it may comprise other elements be arranged at therebetween; So-called " directly " refers to and does not arrange other intermediary elements therebetween.The description of " top/on " or " below/under " etc. is that benchmark is described with graphic, but also comprise other possible directions and change.So-called " first ", " second " and " the 3rd " describe different elements, and these elements are not restricted because of this type of meaning diction.In order to the facility that illustrates and clear and definite, the thickness of each element or size in graphic be exaggerate or omit or the mode of outline represents, and the size of each element are not entirely the size of its reality.
Fig. 1 is the circuit diagram of the display panel 100 of the embodiment of the present invention, and Fig. 2 is then the cross-sectional view of this display panel 100.This display panel 100 comprises: first substrate 110, second substrate 120, one scan driver element 130, data drive unit 140, Power Management Unit 150 and a short detection unit 160, wherein, the upper surface of this first substrate 110 is formed with multiple thin film transistor (TFT) 112, many the first electric conduction routing 116 as sweep trace, and many second electric conduction routing 118 as data line, the upper surface of this second substrate 120 is formed with one as the shared electrode layer 122 of the reference potential of this display panel 100, this Power Management Unit 150 operates required various DC voltage in order to provide this display panel 100, and this short detection unit 160 is electrically connected to this first substrate 110 and this second substrate 120, the short circuit of small area analysis value whether is had to occur in order to detect between this first substrate 110 and this second substrate 120, such as, be greater than 5mA and be less than the short-circuit current of 300mA.
This first substrate 110 and this second substrate 120 are the setting of face-to-face storehouse, and multiple sept 170 is distributed between described substrate 110 and 120, in order to make the gap that can maintain constant spacing between this first substrate 110 and this second substrate 120, and liquid crystal 180 can be charged in wherein.This first substrate 110 is in order to carry described thin film transistor (TFT) 112, described first electric conduction routing 116, described second electric conduction routing 118, multiple pixel electrode 132 and this scan drive cell 130; In the present embodiment, simultaneously the circuit of this scan drive cell 130 is produced on above-mentioned thin film transistor base plate by the semiconductor subassembly technique identical with described thin film transistor (TFT) 112 and described electric conduction routing 116/118, therefore this is also called the gate driver technology (Gate driver OnPanel is called for short GOP) on panel.In addition, this second substrate 120 is in order to carry this shared electrode layer 122 and a colored filter (not shown).This first substrate 110 and this second substrate 120 can be transparency carriers that is soft or rigidity.In the present embodiment, this first substrate 110 is all glass substrate with this second substrate 120, and due to this first substrate 110 being manufactured with described thin film transistor (TFT) 112, this second substrate 120 is provided with colored filter, in the technology of display panel, this first substrate 110 can be described as thin film transistor (TFT) (TFT) substrate, and this second substrate 120 can be described as colored filter (CF) substrate.
The pixel of this display panel 100 is arranged at a matrix type on this first substrate 110.For color monitor, a pixel can comprise each one of red sub-pixel, green sub-pixels and blue subpixels.As shown in Figure 1, described first electric conduction routing 116 is transversely arranged scan signal line, in order to transmit this scan drive cell 130 export the sweep signal that each bar first electric conduction routing 116 is sequentially scanned; Described second electric conduction routing 118 is the data signal line of longitudinal arrangement, in order to transmit the pixel data signal that this data drive unit 140 exports, this data drive unit 140 exports the corresponding voltage of this pixel data, to drive described second electric conduction routing 118; This data drive unit 140 may correspond to the second driver element described in the claims in the present invention.Infall definable so-called pixel of every bar first electric conduction routing 116 and every bar second electric conduction routing 118.The grid of each thin film transistor (TFT) 112 connects first electric conduction routing (or sweep trace) 116, its drain electrode connection second electric conduction routing (or data line) 118, by sweep signal, data-signal, with this pixel electrode 132 and determine opening or closing (On/Off) of this pixel.Therefore, as shown in Figure 1, the equivalent electrical circuit of each pixel comprises a thin film transistor (TFT) 112 and a parallel plate capacitor, and the first half of this parallel plate capacitor is this pixel electrode 132, and its Lower Half is this shared electrode layer 122, it is connected to the share voltage VCOM of this display panel 100.
Gate drivers (GOP) technology on panel is applicable to due to the present embodiment, therefore the circuit of this scan drive cell 130 is directly made on this first substrate 110, but not integrated circuit (IC) chip making a scanner driver in addition sticks on the circuit board of this display panel 100 again.This scan drive cell 130 may correspond to the first driver element described in the claims in the present invention.As shown in Figure 1, this scan drive cell 130 connects the grid of described thin film transistor (TFT) 112 respectively via described first electric conduction routing 116, by the d. c. voltage signal of high level, this active switch assembly of conducting (namely, this thin film transistor (TFT) 112), and close this active switch assembly by low level d. c. voltage signal.Because above-mentioned d. c. voltage signal is in order to drive the grid of described thin film transistor (TFT) 112, therefore, in display panel technology, the d. c. voltage signal of this high level is also called grid high level voltage (Vgate-high, be called for short VGH), this low level d. c. voltage signal is also called grid low level voltage (Vgate-low is called for short VGL).
This Power Management Unit 150 has an input voltage VCC, and export this display panel 100 and operate required various DC voltage, such as, grid high level voltage VGH (it may correspond to the first voltage described in claim), grid low level voltage VGL (it may correspond to the second voltage described in claim), timing controller (Time Controller, be called for short T-CON) supply voltage VDD to produce the clock signal needed for this display panel 100, control the Gamma voltage Vgamma needed for liquid crystal deflection, be supplied to the shared electrode of colored filter substrate using the share voltage VCOM (it may correspond to the tertiary voltage described in claim) etc. as this display panel 100 reference potential.This Power Management Unit 150 can have the function of over-temperature protection, to avoid the injury itself being subject to operating temperature too high (such as, chip junction temperature is greater than 150 DEG C).In the present embodiment, this Power Management Unit 150 comprises an inefficacy (disabling) control end further, it accepts the control signal from an excess current and/or overvoltage protection device (non-icon) or this short detection unit 160, if this control signal is logical one (or high level), then will this Power Management Unit 150 be made to have the ability cutting off output voltage; And if this control signal is logical zero (or low level), then this Power Management Unit 150 maintains the operation that it exports various DC voltage.Above-mentioned excess current and/or overvoltage protection refer to that the DC voltage that exports when this Power Management Unit 150 (such as, grid high level voltage VGH, grid low level voltage VGL, timing controller supply voltage VDD, Gamma voltage Vgamma, share voltage VCOM etc.) there is excessive electric current (such as, be greater than 300mA) or voltage is (such as, be less than 80% of its default voltage or specified (rating) voltage, or be greater than 115% of its default voltage) time, this excess current and/or overvoltage protection device will send the control signal of high level, thus make this Power Management Unit 150 lose efficacy (disabled).
But; above-mentioned excess current/voltage protection mechanism is only limited to the big current more than 300mA or the large voltage more than 115% default value; for small short-circuit current possible between colored filter substrate and thin film transistor base plate (such as; be less than 300mA), then effectively cannot provide suitable protection mechanism when it occurs.Therefore, in the present embodiment, whether this short detection unit 160 can have the short circuit of small area analysis value to occur in order to detect between this first substrate 110 and this second substrate 120, such as, and the short-circuit current between 5mA and 300mA.Between this first substrate 110 and this second substrate 120 during this type of short-circuit current, this short detection unit 160 will send the control signal of high level, thus this Power Management Unit 150 was lost efficacy or there is the ability cutting off output voltage, prevent above-mentioned small area analysis value short-circuit current from continuing to flow in the pixel of injury part in this display panel 100.
In the present embodiment, be made on thin film transistor base plate (this first substrate 110) because this scan drive cell 130 is employing GOP (gate drivers on panel) technology, therefore, it need can suitably conducting or close described thin film transistor (TFT) 112 more than the grid high level voltage VGH of 20V voltage difference and gate pole low level voltage VGL.Such as, this Power Management Unit 150 can directly provide the grid high level voltage VGH being greater than 15V and the grid low level voltage VGL being less than-5V to this scan drive cell 130, using the use as the described thin film transistor (TFT) 112 of driving.When there is the fractional value short-circuit current between 5mA and 300mA between thin film transistor base plate and colored filter substrate, this short detection unit 160 will send the control signal of high level, stop making this Power Management Unit 150 exporting this grid high level voltage VGH and gate pole low level voltage VGL, even all the other these display panels 100 operate required DC voltage.
Fig. 3 is the circuit diagram of the display panel 200 of another embodiment of the present invention, this display panel 200 except comprise further an accurate deviator 190 and this Power Management Unit 150 can only provide be less than 3.5V voltage difference grid high level voltage VGH1 and gate pole low level voltage VGL1 except, all the other parts are all analogous to the embodiment of this display panel 100 of Fig. 2, related description does not repeat them here, described in referring to above.Because this scan drive cell 130 adopts GOP technology and making, it needs can suitably conducting or close described thin film transistor (TFT) 112 more than the grid high level voltage VGH of 20V voltage difference and gate pole low level voltage VGL.Therefore, the present embodiment increases this accurate deviator 190, it accepts grid high level voltage VGH1 that this Power Management Unit 150 provides and gate pole low level voltage VGL1, such as, VGH1 is 3.3V and VGL1 is 0V, and give offset voltage position standard and export the grid low level voltage VGL2 of the grid high level voltage VGH2 and-15V of 24V respectively to this scan drive cell 130, using the use as the described thin film transistor (TFT) 112 of driving.When there is the fractional value short-circuit current between 5mA and 300mA between thin film transistor base plate and colored filter substrate, this short detection unit 160 will send the control signal of high level, stop making this Power Management Unit 150 exporting this grid high level voltage VGH2 and gate pole low level voltage VGL2, even all the other these display panels 200 operate required DC voltage.
Fig. 4 is the circuit diagram of the display panel 300 of another embodiment of the present invention, this display panel 300 except comprise further an accurate deviator 190 and this Power Management Unit 150 can only provide be less than 3.5V voltage difference grid high level voltage VGH1 and gate pole low level voltage VGL1 except, all the other parts are all analogous to the embodiment of this display panel 100 of Fig. 2, related description does not repeat them here, described in referring to above.Because this scan drive cell 130 adopts GOP technology and making, it needs can suitably conducting or close described thin film transistor (TFT) 112 more than the grid high level voltage VGH of 20V voltage difference and gate pole low level voltage VGL.Therefore, the present embodiment increases this accurate deviator 190, it accepts grid high level voltage VGH1 that this Power Management Unit 150 provides and gate pole low level voltage VGL1, such as, VGH1 is 3.3V and VGL1 is 0V, and give offset voltage position standard and export the grid low level voltage VGL2 of the grid high level voltage VGH2 and-15V of 24V respectively to this scan drive cell 130, using the use as the described thin film transistor (TFT) 112 of driving.In addition, this accurate deviator 190 comprises a Failure Control end, it accepts the control signal from this short detection unit 160, if this control signal is logical one (or high level), then will this accurate deviator 190 be lost efficacy or there is the ability cutting off output voltage, and its output state be a high impedance; And if this control signal is logical zero (or low level), then this accurate deviator 190 maintains the operation that it exports DC voltage VGH2 and VGL2.When there is the fractional value short-circuit current between 5mA and 300mA between thin film transistor base plate and colored filter substrate, this short detection unit 160 will send the control signal of high level, stops exporting this grid high level voltage VGH2 and gate pole low level voltage VGL2 to make this accurate deviator 190.
About above-mentioned short detection unit 160, whether it has short-circuit current to flow between thin film transistor base plate and colored filter substrate in order to detect, Fig. 5 is the circuit diagram of the short detection unit 160 of the present embodiment, and this short detection unit 160 comprises a current sensor 162 and and compares decision-making circuit 164.This current sensor 162 can be made up of resistance, and its one end is connected to the shared electrode of colored filter substrate, the other end is connected to the VCOM voltage output end of this Power Management Unit 150 or is connected to the VCOM voltage output end of this Power Management Unit 150 through a voltage operational amplifier (Voltage Operational Amplifier) 166, as shown in Figure 5.This compares decision-making circuit 164 can be schmitt trigger (Schmitt trigger), it accepts the induced voltage difference at these current sensor 162 two ends, and compare with a reference voltage level, when there is the short-circuit current between 5mA and 300mA between thin film transistor base plate and colored filter substrate, this compares the control signal that decision-making circuit 164 will send a high level, uses the ability making this Power Management Unit 150 or this accurate deviator 190 cut off its output voltage or lose output voltage.
Fig. 6 is the structural representation of the display device 10 according to the embodiment of the present invention, and this display device 10 comprises the display panel 20 of a foundation previous embodiment.This display device 10 can be containing display panel as the computer equipment of screen, mobile phone, flat computer or digital frame etc., but the present invention is not limited this.This display panel 20 can be liquid crystal panel, causes Light polarizing change by Liquid Crystal Molecules Alignment can be subject to the impact of external voltage or electric field, to reach the display of image.
The above description of this invention is illustrative, and nonrestrictive, and those skilled in the art is understood, and can carry out many amendments, change or equivalence, but they all will fall within the scope of protection of the present invention in the spirit and scope of claim restriction to it.

Claims (10)

1. a display panel, is characterized in that, comprising:
One first substrate;
Multiple thin film transistor (TFT), is formed on this first substrate;
One first driver element, is formed on this first substrate, and connects the grid of described thin film transistor (TFT) respectively via many first electric conduction routing;
One second substrate, is arranged face-to-face with this first substrate;
One shared electrode layer, is formed on this second substrate;
One Power Management Unit, export at least one first voltage, one second voltage and a tertiary voltage, this first voltage controls the use of described thin film transistor (TFT) conducting as this first driver element, this second voltage controls the use of described thin film transistor (TFT) closedown as this first driver element, and this tertiary voltage is supplied to this shared electrode layer using the reference voltage as this display panel; And
One short detection unit, is electrical connected with this first substrate and this second substrate, detects the electric current between this first substrate and this second substrate, and exports a control signal.
2. display panel as claimed in claim 1, it is characterized in that, this short detection unit detects the scope of this electric current between 5mA and 300mA.
3. display panel as claimed in claim 1, is characterized in that, comprise one second driver element further, and connect the drain electrode of described thin film transistor (TFT) respectively via many second electric conduction routing.
4. display panel as claimed in claim 1, it is characterized in that, this first voltage and this second voltage are directly supplied to this first driver element, and this control signal makes this Power Management Unit have the ability cutting off output voltage.
5. display panel as claimed in claim 4, it is characterized in that, the voltage difference of this first voltage and this second voltage is greater than 20V.
6. display panel as claimed in claim 1, it is characterized in that, comprise an accurate deviator further, it accepts this first voltage and this second voltage, and exports one the 4th voltage and one the 5th voltage, to be supplied to described first driver element; Wherein, the voltage difference of the 4th voltage and the 5th voltage is greater than the voltage difference of this first voltage and this second voltage.
7. display panel as claimed in claim 6, is characterized in that, this control signal makes this Power Management Unit have the ability cutting off output voltage.
8. display panel as claimed in claim 6, is characterized in that, this control signal makes this accurate deviator have the ability cutting off output voltage.
9. display panel as claimed in claim 6, it is characterized in that, the voltage difference of the 4th voltage and the 5th voltage is greater than 20V, and the voltage difference of this first voltage and this second voltage is less than 3.5V.
10. a display device, is characterized in that, comprises a display panel, and this display panel comprises:
One first substrate;
Multiple thin film transistor (TFT), is formed on this first substrate;
One first driver element, is formed on this first substrate, and connects the grid of described thin film transistor (TFT) respectively via many first electric conduction routing;
One second substrate, is arranged face-to-face with this first substrate;
One shared electrode layer, is formed on this second substrate;
One Power Management Unit, export at least one first voltage, one second voltage and a tertiary voltage, this first voltage controls the use of described thin film transistor (TFT) conducting as this first driver element, this second voltage controls the use of described thin film transistor (TFT) closedown as this first driver element, and this tertiary voltage is supplied to this shared electrode layer using the reference voltage as this display panel; And
One short detection unit, is electrical connected with this first substrate and this second substrate, detects from the electric current between this first substrate and this second substrate, and exports a control signal.
CN201310554960.8A 2013-11-08 2013-11-08 Display panel and display equipment using same Pending CN104635362A (en)

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Publication number Priority date Publication date Assignee Title
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CN101131487A (en) * 2006-08-25 2008-02-27 群康科技(深圳)有限公司 Power supply circuit and LCD using the same
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