CN107564462A

CN107564462A - Display panel

Info

Publication number: CN107564462A
Application number: CN201710005452.2A
Authority: CN
Inventors: 张耕辅; 谢朝桦; 柯瑞峰; 刘同凯; 和津田启史
Original assignee: Innolux Display Corp
Current assignee: Innolux Corp
Priority date: 2016-06-28
Filing date: 2017-01-04
Publication date: 2018-01-09
Anticipated expiration: 2037-01-04
Also published as: CN107564462B; CN113241039A

Abstract

Display panel, including one first current source and one first pixel cell.First pixel cell includes a first switch and one first light emitting diode.First switch is electrically connected with the first current source and receives one first scanning signal.When the first scanning signal is enabled, first switch is switched on and receives one first electric current from the first current source.First light emitting diode couples first switch.When first switch is switched on, the first electric current flows through the first light emitting diode, to light the first light emitting diode.

Description

Display panel

Technical field

This disclosure relates to a kind of display panel, more particularly to a kind of display panel with light emitting diode.

Background technology

The characteristics of having image quality excellent due to kinescope and be cheap, therefore the display as TV and computer always Device.However, with the development of science and technology new flat-panel screens is developed successively.The major advantage of flat-panel screens is, when When flat-panel screens has large-sized display panel, therefore the cumulative volume of flat-panel screens can't have significant change.

The content of the invention

The disclosure provides a kind of display panel, including one first current source and one first pixel cell.First pixel list Member includes a first switch and one first light emitting diode.First switch and the first current source are electrically connected with and receive one the Scan signal.When the first scanning signal is enabled, first switch is switched on and receives one first from the first current source Electric current.First light emitting diode couples first switch.When first switch is switched on, the first electric current flows through the first light-emitting diodes Pipe, to light the first light emitting diode.

The disclosure provides another display panel, including a pixel cell.Pixel cell include one first transmission switch, One first energy-storage travelling wave tube, one first luminescence unit, one second luminescence unit, one light switch and a level setting unit.The One transmission switch receives one first scanning signal and a first choice signal.First energy-storage travelling wave tube coupling the first transmission switch. First luminescence unit includes a first switch and one first light emitting diode.First switch couples the first energy-storage travelling wave tube.First Light emitting diode couples first switch.Second luminescence unit the first luminescence unit of parallel connection, and including a second switch and one the Two light emitting diodes.Second light emitting diode couples second switch.Light switch the first luminescence unit of coupling and second luminous Unit, and receive one and light signal.Level setting unit coupling light switch, to provide a predetermined level to light switch.

The disclosure provides another display panel, including an at least pixel cell.Pixel cell includes a first crystal Pipe, a second transistor, an energy-storage travelling wave tube, a third transistor, a light emitting diode and a sensing element.First crystal Pipe is with a first grid, one first drain electrode and one first source electrode.First grid receives scan signal.First drain electrode connects Receive a data-signal.Second transistor has a second grid, one second drain electrode and one second source electrode.Second grid couples First source electrode.Second drain electrode receives one first operating voltage.Energy-storage travelling wave tube couples the first source electrode and the second source electrode.3rd crystal Pipe is with one the 3rd grid, one the 3rd drain electrode and one the 3rd source electrode.3rd grid receives one and lights signal.3rd source electrode coupling Connect the second source electrode.Light emitting diode has an anode and a negative electrode.The drain electrode of anode coupling the 3rd.Negative electrode receives one second behaviour Make voltage.Sensing element senses the brightness of light emitting diode, to produce a feedback signal.Feedback signal is adjusting data Signal.

Brief description of the drawings

Fig. 1 is the schematic diagram of the display system of the disclosure.

Fig. 2A and 2B is the possibility embodiment of the pixel cell of the disclosure.

Fig. 3 is another schematic diagram of the display system of the disclosure.

Fig. 4 A and 4B are the possibility embodiment of the pixel cell of the disclosure.

Fig. 5 A and 5B are other possible embodiments of the pixel cell of the disclosure.

Fig. 6 is another possible embodiment of the pixel cell of the disclosure.

Fig. 7 is another possible embodiment of the pixel cell of the disclosure.

Fig. 8 A and 8B are the possibility embodiment of the pixel cell of the disclosure.

Fig. 8 C are the schematic diagram of the discharge signal of the disclosure.

Fig. 9 is a control sequential figure of the display panel of the disclosure.

Figure 10 is another possible embodiment of the pixel cell of the disclosure.

Figure 11 is a possible configuration diagram of the display panel of the disclosure.

Figure 12 is another possible embodiment of the pixel cell of the disclosure.

Figure 13 A~13C are a possible embodiment of the pixel cell of the disclosure.

Figure 14 is another possible embodiment of the pixel cell of the disclosure.

Figure 15 A and 15B are the possibility control sequential figure of the pixel cell of the disclosure.

【Symbol description】

100、300：Display system；

110、310：Gate drivers；

120、320、630、810、1410：Source electrode driver；

130、330、1100：Display panel；

SCAN、SCAN₃~SCAN_n、SCAN_a~SCAN_d：Scanning signal；

SCAN₁、CSCAN：First scanning signal；

SCAN₂、DSCAN：Second scanning signal；

DT₁~DT_m、DT：Data-signal；

121、321、631、820、1417：Controller；

SCA₁~SCA_m、SCB₁~SCB_m：Current source；

VDD：First operating voltage；

VSS：Second operating voltage；

PA₁₁~PA_mn, 201~204,401~404, PB₁₁~PB_mn、500A、500B、610、620、 700、800A、 800B、1200、1300A、1300B、1300C、1400：Pixel cell；

510、520：Compensation circuit；

611、621、1411：Sensing element；

710：ESD protection circuit；

830：Discharge circuit；

841~843,921~925,1502~1504：Period；

911、912、1501：During frame；

1101：Substrate；

1102、1109：Insulating barrier；

1103：Gate electrode；

1104：Gate dielectric；

1105：Insulating barrier；

1106：Semiconductor layer；

1107：Drain electrode；

1108：Source electrode；

1110：Metal blocks；

1121、1122：Groove；

1405：Energy-storage travelling wave tube；

1203、1303：First energy-storage travelling wave tube；

1215、C_CS2：Second energy-storage travelling wave tube；

C_CS3：3rd energy-storage travelling wave tube；

1205：Light-emitting device；

1207、1311：Light switch；

1209、1313：Level setting unit；

CS1：First choice signal；

CS2：Second selection signal；

CS3：3rd selection signal；

T21：N-type transistor；

C_CS、C_store：Electric capacity；

1211、1305A、1305B、1305C：First luminescence unit；

1212、1307A、1307B、1307C：Second luminescence unit；

1309A、1309B、1309C：3rd luminescence unit；

1217：Setting signal；

EM：Light signal；

Q₁, T1~T3, NT1, NT2：N-type transistor；

PT1、PT2：P-type transistor；

1201、1301：First transmission switch；

1216、1319：Second transmission switch；

1213、1315：3rd transmission switch；

I₁：First electric current；

I₂：Second electric current；

I₃：3rd electric current；

I₄：4th electric current；

I₅：Electric current；

LV127、LV64、LV32、LV255：GTG；

SW₃~SW₄：Switch；

SW₁、T11A、T11B、T11C：First switch；

SW₂、T12A、T12B、T12C：Second switch；

T13B、T13C、T22：3rd switch；

T13A：4th switch；

T23：5th switch；

LED₁：First light emitting diode；

LED₂：Second light emitting diode；

LED₃：3rd light emitting diode；

LED₄、1409：Light emitting diode；

SF₁、SF₂、SFB：Feedback signal；

ND₁、ND₂：Node；

S_DS：Discharge signal；

GND：Ground voltage；

1321：OR-NOT circuit；

IN1：First input end；

IN2：Second input；

OUT：Output end

1401：The first transistor；

1403：Second transistor；

1407：Third transistor；

1413：Memory cell；

1415：GTG table；

BT：Brightness；

1505：Carrier wave.

Embodiment

For the objects, features and advantages of the disclosure can be become apparent, it is cited below particularly go out embodiment, and coordinate accompanying drawing, It is described in detail.Present disclosure specification provides different embodiments to illustrate the technical characteristic of disclosure different embodiments. Wherein, each element in embodiment is configured to purposes of discussion, and is not used to limit the disclosure.In addition, schema mark in embodiment Number part repeat, for the purpose of simplifying the description, the relevance being not meant as between different embodiments.

Fig. 1 is the schematic diagram of the display system of the disclosure.As illustrated, display system 100 includes a gate drivers 110th, the display panel 130 of one source driver 120 and one.In a possible embodiment, display system 100 is individual digital Assistant (PDA), mobile phone (cellular phone), digital camera, TV, global positioning system (GPS), automobile-used display Device, aviation display, digital frame (digital photo frame), mobile computer or desktop PC.

Gate drivers 110 can produce scanning signal SCAN₁~SCAN_n.Source electrode driver 120 can produce data-signal DT₁~DT_m.In the present embodiment, data-signal DT₁~DT_mFor current signal, but and it is not used to limit the disclosure.Other In embodiment, data-signal DT₁~DT_mFor voltage signal.

As illustrated, source electrode driver 120 at least has a controller 121 and current source SCA₁~SCA_m.Controller 121 to control electric current source SCA₁~SCA_m.Current source SCA₁~SCA_mReceive one first operating voltage VDD.It may implement one In example, gate drivers 110 are incorporated into a chip and are arranged in display panel 130 with source electrode driver 120.

Display panel 130 couples gate drivers 110 and source electrode driver 120, and has multiple pixel cell PA₁₁~ PA_mn.Each pixel cell receives scan signal, a data-signal and one second operating voltage VSS.Specifically swept when one When retouching signal and being enabled, corresponding pixel cell receives a corresponding data-signal, and is presented according to the data-signal bright Degree.With pixel cell PA₁₁Exemplified by, as scanning signal SCAN₁When being enabled, pixel cell PA₁₁Receive data-signal DT₁, and root According to data-signal DT₁Brightness is presented.For further, in the present embodiment, data-signal DT₁For current signal, therefore can By adjusting the size of aforementioned currents, adjustment pixel cell PA₁₁The brightness of presentation.

Fig. 2A is a possible embodiment of the pixel cell of the disclosure.For convenience of description, Fig. 2A shows four pixel cells 201~204.Pixel cell 201~204 each has a switch and a light emitting diode.Due to pixel cell 201~204 Inside structure it is identical with operating principle, therefore below by taking pixel cell 201 as an example.As illustrated, pixel cell 201 includes one First switch SW₁And one first LED₁。

First switch SW₁Receive one first scanning signal SCAN₁.As the first scanning signal SCAN₁When being enabled, first opens Close SW₁It is switched on.In the present embodiment, first switch SW₁For a N-type transistor Q₁.N-type transistor Q1 grid receives first Scanning signal SCAN₁, it, which drains, receives data-signal DT₁, its source electrode the first LED of coupling₁.In other embodiments In, N-type transistor Q1 can also be substituted by P-type transistor.

First LED₁Anode coupling N-type transistor Q1 source electrode, its negative electrode receives the second operating voltage VSS.In a possible embodiment, the first LED₁For a micro- light emitting diode (microLED).Work as first switch SW₁When being switched on, one first electric current (i.e. data-signal DT₁) flow through the first LED₁.Therefore, the first light-emitting diodes Pipe LED₁It is lit.

Fig. 2 B are another possible embodiment of the pixel cell of the disclosure.Fig. 2 B similar diagram 2A, difference are Fig. 2 B The first LED₁Anode receive data-signal DT₁, its negative electrode coupling N-type transistor Q₁Drain electrode.Due to figure The manner of execution of 2B pixel cell is similar to the manner of execution of Fig. 2A pixel cell, therefore repeats no more.In addition, Fig. 2 B N Transistor npn npn Q₁Also it is replaceable into P-type transistor.

Fig. 3 is another schematic diagram of the display system of the disclosure.Fig. 3 similar diagrams 1, difference is, Fig. 3 source electrode The current source SCB of driver 320₁~SCB_mReceive the second operating voltage VSS, and pixel cell PB₁₁~PB_mnReceive first Operating voltage VDD.Because the operating principle of Fig. 3 display system 300 is similar to the operating principle of Fig. 1 display system 100, Therefore repeat no more.

Fig. 4 A are a possible embodiment of the pixel cell of the disclosure.Fig. 4 A similar diagram 2A, difference are that N-type is brilliant Body pipe Q₁Drain electrode receive the first operating voltage VDD, and the first LED₁Negative electrode receive data-signal DT₁。 As N-type transistor Q₁During conducting, data-signal DT₁Flow through the first LED₁, to light the first light emitting diode LED₁。

Fig. 4 B are a possible embodiment of the pixel cell of the disclosure.Fig. 4 B similar diagram 4A, difference be, first LED₁Anode receive the first operating voltage VDD, its negative electrode coupling N-type transistor Q₁Drain electrode.In this implementation In example, N-type transistor Q₁Source electrode receive data-signal DT₁.Due to Fig. 4 B pixel cell manner of execution similar in appearance to Fig. 2A Pixel cell manner of execution, therefore repeat no more.

Fig. 5 A are another possible embodiment of the pixel cell of the disclosure.Fig. 5 A similar diagram 4A, difference are, scheme 5A first switch SW₁For a P-type transistor Q₂, and pixel cell 500A also includes a compensation circuit 510.Compensation circuit 510 coupling first switch SW₁With the first LED₁, can be used to compensate P-type transistor Q₂Critical voltage (threshold voltage)。

The disclosure does not limit how compensation circuit 510 compensates P-type transistor Q₂Critical voltage.Any detectable p-type Transistor Q₂Critical voltage, and according to testing result amendment data-signal DT₁Circuit framework, can be used as compensation circuit 510.In a possible embodiment, during one compensates, compensation circuit 510 detects and records P-type transistor Q₂Critical electricity Pressure, in a data address period, compensation circuit 510 utilizes P-type transistor Q₂Critical voltage, adjustment data-signal DT₁.One During lighting, the first LED₁Believe DT according to the data after adjustment₁Brightness is presented.Then, during one removes, Compensation circuit 510 removes the P-type transistor Q previously recorded₂Critical voltage, and again and record P-type transistor Q₂Face Boundary's voltage.In other embodiments, compensation circuit 510 is also applicable at least pixel cell shown in Fig. 2A and Fig. 4 A.

Fig. 5 B are another possible embodiment of the pixel cell of the disclosure.Fig. 5 B similar diagram 4B, difference are Fig. 5 B The more compensation circuits 520 of pixel cell 500B.Due to the spy of the characteristic and Fig. 5 A compensation circuit 510 of compensation circuit 520 Property is identical, therefore repeats no more.In other embodiments, compensation circuit 520 is also applicable at least one shown in Fig. 2 B and Fig. 4 B In pixel cell.

Fig. 6 is another possible embodiment of the pixel cell of the disclosure.For convenience of description, Fig. 6 shows two adjacent pixels Unit 610 and 620.Because pixel cell 610 is similar to 620 circuit framework, therefore below by taking pixel cell 610 as an example.Such as figure Shown, pixel cell 610 receives scanning signal SCAN₁With data-signal DT₁, and including a first switch SW₁, it is one first luminous Diode (LED)₁An and sensing element 611.

First switch SW₁With the first LED₁Characteristic and Fig. 4 A first switch SW₁With the first light-emitting diodes Pipe LED₁It is similar, therefore repeat no more.As first switch SW₁During conducting, one first electric current (i.e. data-signal DT₁) flow through the first hair Optical diode LED₁.Therefore, the first LED₁It is lit.

Sensing element 611 senses the first LED₁Brightness, to produce a feedback signal SF₁.Feedback letter Number SF₁To adjust data-signal DT₁.In a possible embodiment, the controller 631 of one source driver 630 is according to feedback Signal SF₁Adjust current source SC₁, to adjust electric current (the i.e. data-signal DT for being supplied to pixel cell 620₁).Therefore, when sweeping Retouch signal SCAN₂When being enabled, second switch SW₂It is switched on.Now, one second electric current (i.e. adjusted data-signal DT₁) Flow through the second LED₂, to light the second LED₂.The data-signal DT being adjusted by₁, the Two LEDs₂Brightness can compensate for the first LED₁Brightness drift.

Similarly, when the second LED₂When luminous, sensing element 621 senses the second LED₂'s Brightness, to produce a feedback signal SF₂.Controller 631 is according to feedback signal SF₂Adjust current source SC₁, to adjust pixel The brightness of the adjacent pixel cell of unit 620.Therefore, when the brightness of a particular led is drifted about, it is adjusted by The brightness of adjacent light emitting diode, can compensation brightness drift the problem of.In other embodiments, sensing element 611 also may be used It is applied in Fig. 2A, Fig. 2 B, Fig. 4 A, Fig. 4 B, at least pixel cell shown in Fig. 5 A and Fig. 5 B.

Fig. 7 is another possible embodiment of the pixel cell of the disclosure.Fig. 7 similar diagram 4A of pixel cell 700 pixel Unit 401, difference are Fig. 7 pixel cell more than 700 static discharge (ESD) protection circuit 710.Static discharge Protection circuit 710 couples first switch SW₁.When the first LED₁It is welded in node ND₁With ND₂When, an electrostatic is put Electric event is likely to occur in node ND₁Or ND₂, thus damage first switch SW₁.Therefore, as node ND₁Or node ND₂Voltage During more than a setting value, ESD protection circuit 710 turns on, to avoid a static discharge current from entering first switch SW₁。

The disclosure does not limit the circuit framework of ESD protection circuit 710.Any releasable ESD stress Circuit, it can be used as ESD protection circuit 710.In other embodiments, ESD protection circuit 710 can also be applied Into at least pixel cell shown in Fig. 2A, Fig. 2 B, Fig. 4 A, Fig. 4 B, Fig. 5 A, Fig. 5 B and Fig. 6.

Fig. 8 A are another possible embodiment of the pixel cell of the disclosure.Fig. 8 A pixel cell 800A similar diagrams 4A's Pixel cell 401, difference is, Fig. 8 A pixel cell more than 800 discharge circuit 830.Discharge circuit 830 to The voltage of an at least data wire is discharged, to avoid the residual charge on data wire from influenceing the first LED₁Brightness.For Convenient explanation, Fig. 8 A show single data wire DL₁, but and be not used to limit the disclosure.In other embodiments, discharge circuit The 830 multiple data wires of coupling.In certain embodiments, multiple pixel cells share same discharge circuit.

As first switch SW₁During conducting, one first electric current (i.e. data-signal DT₁) pass through data wire DL₁Flow into pixel cell 800A.Therefore, the first LED₁It is lit.As first switch SW₁It is not turned on and a discharge signal S_DSIt is enabled When, discharge circuit 830 is by data wire DL₁A low potential (such as operating voltage VSS or ground voltage GND) is coupled to, to discharge Data wire DL₁On voltage.

The disclosure does not limit the inside structure of discharge circuit 830.It is any to discharge data wire DL₁On voltage Circuit, it can be used as discharge circuit 830.In a possible embodiment, a discharge signal S_DSCan be by the control of source electrode driver 810 Produced by device 820.In other embodiments, discharge circuit 830 is equally applicable to Fig. 2A, Fig. 2 B, Fig. 4 A, Fig. 4 B, Fig. 5 A, figure In an at least pixel cell shown in 5B, Fig. 6 and Fig. 7.

Fig. 8 B are another possible embodiment of the pixel cell of the disclosure.Fig. 8 B similar diagram 8A, difference are Fig. 8 B Discharge circuit 830 be integrated among source electrode driver 810.As illustrated, work as the enable discharge signal S of controller 820_DSWhen, Discharge circuit 830 is by data wire DL₁The second operating voltage VSS or ground voltage GND is coupled to, to discharge data wire DL-₁'s Voltage.

Fig. 8 C are the discharge signal S of the disclosure_DSSchematic diagram.Symbol SCAN_a~SCAN_dFour sequentials of expression The scanning signal of scan line.For convenience of description, it is assumed hereinafter that a discharge circuit is couple to all data wires.In the present embodiment, Because discharge circuit is couple to all data wires, therefore, when discharge circuit acts, no scanning signal is enabled.

For example, it is enabled in period 841~843, no scanning signal, therefore, discharge signal S_DSIt is enabled, to Trigger discharge circuit.When discharge circuit is triggered, all data wires are coupled to a low operating voltage (such as VSS by discharge circuit Or GND), to discharge the voltage on all data wires.

The disclosure does not limit discharge signal S_DSThe number being enabled.In a possible embodiment, discharge signal S_DSQuilt The number of enable is not a fixed value.For example, in period 841, discharge signal S_DSThe number being enabled was less than in period In 843, discharge signal S_DSThe number being enabled.In addition, discharge signal S_DSThe number being enabled may also maintain a fixation Value.For example, in period 843, discharge signal S_DSOnly it is enabled once.In addition, in other embodiments, when not scanning When signal is enabled, discharge signal S_DSAlso it can not be enabled, as shown in period 842.

In order to control the brightness of the light emitting diode of each pixel cell, in a possible embodiment, in the same frame phase Between, it is enabled repeatedly with scan signal, to adjust the brightness of light emitting diode.Fig. 9 is the one of the display panel of the disclosure Control sequential figure.For convenience of description, Fig. 9 is shown 911 and 921 during two frames.911 during frame, the first scanning signal SCAN₁ The number being enabled is different from the 912 first scanning signal SCAN during frame₁The number being enabled.

In addition, as the first scanning signal SCAN₁When being enabled, there is provided different electric currents gives the first LED₁, The first LED can be controlled₁Brightness.For example, in period 921~924, the first scanning signal SCAN₁ It is enabled, and the first LED₁It is respectively received the first electric current I₁, the second electric current I₂, the 3rd electric current I₃And the Four electric current I₄.The disclosure does not limit the first electric current I₁, the second electric current I₂, the 3rd electric current I₃And the 4th electric current I₄Between pass System.

In a possible embodiment, the first electric current I₁, the second electric current I₂, the 3rd electric current I₃And the 4th electric current I₄In one (such as the 3rd electric current I₃) the first electric current I may be same as₁, the second electric current I₂, the 3rd electric current I₃And the 4th electric current I₄In it is another Individual (such as the 4th electric current I₄).In another possible embodiment, the first electric current I₁, the second electric current I₂, the 3rd electric current I₃And the 4th Electric current I₄In (such as second electric current an I₂) it is likely less than the first electric current I₁, the second electric current I₂, the 3rd electric current I₃And the 4th electricity Flow I₄In another (such as first electric current I₁) or more than the first electric current I₁, the second electric current I₂, the 3rd electric current I₃And the 4th electricity Flow I₄In another (such as the 4th electric current I₄).In other embodiments, the first electric current I₁, the second electric current I₂, the 3rd electric current I₃ And the 4th electric current I₄At least one be equal to 0.

In this example, it is assumed that the first electric current I₁Represent GTG LV127, the second electric current I₂Represent GTG LV64, the 3rd Electric current I₃And the 4th electric current I₄Represent GTG LV32.In this instance, 911 brightness presented are about during frame for pixel cell 201 Equal to the brightness corresponding to GTG LV255 (LV127+LV63+LV32+LV32).Therefore, by control data signal DT₁, just Pixel cell can be allowed to show different brightness.

Figure 10 is another possible embodiment of the pixel cell of the disclosure.Figure 10 similar diagram 4A, difference be, One switch SW₁The first LED is coupled to indirectly₁Anode.As illustrated, pixel cell 1000 is opened including first Close SW₁, an electric capacity 1004, a P-type transistor 1006, a N-type transistor 1008 and the first LED₁。

In the present embodiment, first switch SW₁For a N-type transistor 1002.The grid of N-type transistor 1002 receives the Scan signal SCAN₁, it, which drains, receives the first operating voltage VDD, and its source electrode is coupled to first by P-type transistor 1006 LED₁Anode.Electric capacity 1004 is coupled between the grid and source electrode of N transistor npn npns 1002.P-type transistor 1006 grid receives a shutdown signal Goff, and its source electrode couples the source electrode of N-type transistor 1002, and its drain electrode is coupled to first LED₁Anode.First LED₁Negative electrode receive data-signal DT₁.N-type transistor 1008 Grid receives shutdown signal Goff, and the source electrode of its coupling N-type transistor 1002 that drains, its source electrode couples the first light emitting diode LED₁Negative electrode.

In the present embodiment, as the first scanning signal SCAN₁When being enabled, N-type transistor 1002 turns on, to electricity Hold 1004 chargings.Now, when shutdown signal Goff is low level, P-type transistor 1006 turns on, luminous to light first Diode (LED)₁.As the first scanning signal SCAN₁When not being enabled, the electric charge stored by electric capacity 1004 can still turn on N-type crystal Pipe 1002 so that the first LED₁Continuous illumination.When shutdown signal Goff is high level, P-type transistor 1006 It is not turned on, therefore the first LED₁Do not light.Now, because N-type transistor 1008 turns on, therefore releasable electric capacity Electric charge stored by 1004.

In the present embodiment, data-signal DT₁For a fixed current.By controlling the first LED₁It is luminous Time, it can control the first LED₁Different brightness is provided.Furthermore the first scanning signal SCAN₁It is not required to continue quilt Enable, as long as the first scanning signal SCAN₁The time of enable is enough to allow electric capacity 1004 to store enough electric charges, N-type transistor 1002 is still sustainable switched on.

Figure 11 is a possible configuration diagram of the display panel of the disclosure.As illustrated, display panel 1100 includes one Substrate 1101, an insulating barrier 1102, a gate electrode 1103, a gate dielectric 1104, an insulating barrier 1105, semiconductor 1107, one source electrode 1108 of the drain electrode of layer 1106, one, a metal blocks 1110 and an insulating barrier 1109.In the present embodiment, grid Pole electrode 1103, drain electrode 1107 and source electrode 1108 form a transistor, and it can be as in such as Fig. 2A pixel cell 201 First switch SW₁。

In addition, in the present embodiment, insulating barrier 1109 is located on substrate 1101, and has multiple grooves, to place Light emitting diode.For convenience of description, Figure 11 shows groove 1121 and 1122.Groove 1121 and 1122 is putting as in Fig. 2A The first LED₁Two pins.May be in embodiment one, groove 1121 is putting the first light emitting diode LED₁First electrode (such as male or female).In this instance, groove 1122 is putting the first LED₁ Two electrodes (such as negative electrode or anode).

The disclosure does not limit the forming method of groove 1121 and 1122.In a possible embodiment, a gold-tinted is utilized to lose Carve groove 1121 and 1122.Gold-tinted technique and metal film technique are recycled, metal is inserted inside groove 1121 and 1122 (such as copper, tin or indium).Finally again by the first LED₁Two pins be respectively welded (bonding) groove 1121 with On 1122 metal level.By the formation of groove 1121 and 1122, bit errors during welding, increase weldering can be avoided or corrected The stability connect.

Figure 12 is another possible embodiment of the pixel cell of the disclosure.As illustrated, pixel cell 1200 includes one the One 1201, one first energy-storage travelling wave tube 1203 of transmission switch, a light-emitting device 1205, one are lighted the level of switch 1207 and one and set Order member 1209.First transmission switch 1201 receives an one first scanning signal CSCAN and first choice signal CS1.When When scan signal CSCAN is enabled, the first transmission switch 1201 transmission first choice signal CS1 give the first energy-storage travelling wave tube 1203.In the present embodiment, the first transmission switch 1201 is a N-type transistor T21, and its grid receives the first scanning signal CSCAN, it, which drains, receives first choice signal CS1, and its source electrode couples the first energy-storage travelling wave tube 1203.In other embodiments, One transmission switch 1201 is a P-type transistor.

The first transmission of first energy-storage travelling wave tube 1203 coupling switch 1201.When the transmission first choice of the first transmission switch 1201 When signal CS1 gives the first energy-storage travelling wave tube 1203, the first energy-storage travelling wave tube 1203 charges according to first choice signal CS1.The disclosure The species of the first energy-storage travelling wave tube 1203 is not limited.Any device that can store energy can be used as the first energy-storage travelling wave tube 1203.In the present embodiment, the first energy-storage travelling wave tube 1203 is an electric capacity C_CS.Electric capacity C_CS one end coupling the first transmission switch 1201, the other end receives the second operating voltage VSS.

Light-emitting device 1205 has multiple luminescence units.One first luminescence unit in such luminescence unit can be set Into a preset emission unit, and other luminescence units can be configured to back lit unit.During one is luminous, preset emission Unit can be lit, and back lit unit is not lit.When the first luminescence unit failure, change from back lit unit, A new preset emission unit is specified, to ensure the normal operation of pixel cell 1200.For convenience of description, Figure 12 shows the first hair The luminescence unit 1212 of light unit 1211 and second.In other embodiments, light-emitting device 1205 may have more luminous Unit.

As illustrated, second luminescence unit 1212 in parallel of the first luminescence unit 1211.In a possible embodiment, one sets Signal 1217 is determined one in the first luminescence unit 1211 and the second luminescence unit 1212 is set into a preset emission list Member, and another in the first luminescence unit 1211 and the second luminescence unit 1212 is set to a back lit unit.When pre- If luminescence unit lights, back lit unit can not light.When preset emission cell failure, can change by back lit list Member is luminous.

The first luminescence unit 1211 of coupling of switch 1207 and the second luminescence unit 1212 are lighted, and receives one and lights signal EM.When lighting signal EM and being enabled, the conducting of switch 1207 is lighted.Now, the luminescence unit in light-emitting device 1205 is by point It is bright.In the present embodiment, it is a N-type transistor T3 to light switch 1207, but and is not used to limit the disclosure.In other implementations In example, it is a P transistor npn npns to light switch 1207.As illustrated, N-type transistor T3 grid, which receives, lights signal EM, it leaks Pole couples light-emitting device 1205, its source electrode coupling level setting unit 1209.

Switch 1207 is lighted in the coupling of level setting unit 1209, to provide a predetermined level to lighting switch 1207. In the present embodiment, level setting unit 1209 includes one second transmission and switchs 1216,1 the 3rd transmission switch 1213 and one the Two energy-storage travelling wave tubes 1215.Second transmission switch 1216 receives data-signal DT and one second scanning signal DSCAN.Can one In energy embodiment, the second scanning signal DSCAN is equal to the first scanning signal CSCAN.In this instance, scan signal can be omitted, Such as DSCAN.

In the present embodiment, the second transmission switch 1216 is a N-type transistor T2.N-type transistor T2 grid receives the Two scanning signal DSCAN, it, which drains, receives data-signal DT, the transmission switch 1213 of its source electrode coupling the 3rd and the second energy storage Element 1215.In other embodiments, the second transmission switch 1216 is a P-type transistor.

Coupling the second transmission switch 1216 of 3rd transmission switch 1213 is with lighting switch 1207.In the present embodiment, the 3rd Transmission switch 1213 is a N-type transistor T1.N-type transistor T1 grid coupling N transistor npn npns T2 source electrode, its coupling that drains N-type transistor T3 source electrode is connect, its source electrode receives the second operating voltage VSS.In other embodiments, the 3rd transmission switch 1213 are made up of a P-type transistor.

The second transmission of second energy-storage travelling wave tube 1215 coupling switch 1216 and the 3rd transmission switch 1213.In the present embodiment, Second energy-storage travelling wave tube 1215 is an electric capacity C_store, but and is not used to limit the disclosure.In other embodiments, it is any to store up The second energy-storage travelling wave tube 1215 can be used as by depositing the element of energy.As illustrated, electric capacity C_store one end coupling N-type transistor T1 grid, its other end coupling N-type transistor T1 source electrode.

When the second scanning signal DSCAN is enabled, the second transmission switch 1216 is switched on.Therefore, the second energy-storage travelling wave tube 1215 charged according to data-signal DT and the 3rd transmission switch 1213 be switched on.Now, light switch 1207 and receive the Two operating voltage VSS (i.e. predetermined level).The disclosure does not limit data-signal DT type.In a possible embodiment, number It is believed that a number DT is probably current signal or voltage signal.

When lighting signal EM and being enabled, light switch 1207 and be switched on.Now, the 3rd transmission switch 1213 is according to the Data-signal DT stored by two energy-storage travelling wave tubes 1215 and be switched on, and the preset emission unit in light-emitting device 1205 Voltage according to stored by the first energy-storage travelling wave tube 1203 and be switched on.Therefore, corresponding brightness is presented in preset emission unit.

Figure 13 A are a possible embodiment of the pixel cell of the disclosure.Pixel cell 1300A includes one first transmission and opened 1301, one first energy-storage travelling wave tube 1303 of pass, one first luminescence unit 1305A, one second luminescence unit 1307A, one the 3rd light Unit 1309A, one light the level setting unit 1313 of switch 1311 and one.Due to first transmission the 1301, first energy storage of switch First transmission switch 1201, first of element 1303, the characteristic for lighting switch 1311 and level setting unit 1313 and Figure 12 Energy-storage travelling wave tube 1203, light switch 1207 and the characteristic of level setting unit 1209 is similar, therefore repeat no more.

In the present embodiment, the first luminescence unit 1305A includes a first switch T11A and one first light emitting diode LED₁.First switch T11A is a N-type transistor, and the first transmission of its grid coupling switch 1301, its coupling first that drains is luminous Diode (LED)₁Negative electrode, its source electrode coupling light switch 1311.First LED₁Anode receive first operation Voltage VDD.In other embodiments, first switch T11A is a P-type transistor.

Second luminescence unit 1307A includes one second energy-storage travelling wave tube C_CS2, a second switch T12A, one the 3rd switch T22 and one second LED₂.May be in embodiment one, the 3rd switch T22 is a N-type transistor, its grid The first scanning signal CSCAN is received, it, which drains, receives the second selection signal CS2, and its source electrode couples the second energy-storage travelling wave tube C_CS2 And second switch T12A.When the first scanning signal CSCAN is enabled, the 3rd switch T22 transmits the second selection signal CS2. In other embodiments, the 3rd switch T22 may be a P-type transistor.

Second energy-storage travelling wave tube C_CS2 one end coupling second switch T12A, its other end receive the second operating voltage VSS. When the 3rd switch T22 is switched on, the second energy-storage travelling wave tube C_CS2 charges according to the second selection signal CS2.In the present embodiment In, the second energy-storage travelling wave tube C_CS2 is an electric capacity, but and is not used to limit the disclosure.Any device with storage energy, The second energy-storage travelling wave tube C_CS2 can be used as.

The switch T22 of second switch T12A couplings the 3rd, the second energy-storage travelling wave tube C_CS2 and the second LED₂。 In a possible embodiment, second switch T12A is a N-type transistor, the switch T22 of its grid coupling the 3rd and the second energy storage member Part C_CS2, its second LED of coupling that drains₂Negative electrode, its source electrode coupling light switch 1311.In other implementations In example, second switch T12A is a P-type transistor.Second LED₂Anode receive the first operating voltage VDD, Its negative electrode coupling second switch T12A.

3rd luminescence unit 1309A includes one the 3rd energy-storage travelling wave tube C_CS3, one the 4th switch T13A, one the 5th switch T23 and one the 3rd LED₃.Due to the 3rd luminescence unit 1309A circuit framework and the second luminescence unit 1307A circuit framework is identical, therefore repeats no more.In addition, in the present embodiment, level setting unit 1313 received Two scanning signal DSCAN are equal to the first scanning signal CSCAN.

May be in embodiment, when first choice signal CS1 be one first level (such as high level) one, and second selects When to select signal CS2 and the 3rd selection signal CS3 be a second electrical level (such as low level), represent that the first luminescence unit 1305A is referred to It is fixed to be designated as back lit list into a preset emission unit and the second luminescence unit 1307A and the 3rd luminescence unit 1309A Member.Now, when the first scanning signal CSCAN is enabled, the transmission first choice signal CS1 of the first transmission switch 1301 are to the One energy-storage travelling wave tube 1303, to be charged to the first energy-storage travelling wave tube 1303, and level setting unit 1313 provides a predetermined level (such as the second operating voltage VSS) is lighted switch 1311.Now, the second energy-storage travelling wave tube 1317 in level setting unit 1313 Charged according to data-signal DT.Because the second selection signal CS2 and the 3rd selection signal CS3 are second electrical level, therefore, the Two switch T12A are not turned on the 4th switch T13A.

When lighting signal EM and being enabled, light switch 1311 and be switched on.Now, in level setting unit 1313 Three transmission switch the 1315 data-signal DT according to stored by the second energy-storage travelling wave tube 1317 and turned on, and first switch T11A Voltage according to stored by the first energy-storage travelling wave tube 1303 and turn on.Therefore, the first LED₁It is lit.

In other embodiments, when the second selection signal CS2 is the first level (such as high level) and first choice signal When CS1 and the 3rd selection signal CS3 is second electrical level (such as low level), represent that the second luminescence unit 1307 is configured to preset Luminescence unit.Therefore, when the first scanning signal CSCAN is enabled, the second selection signal CS2 is to the second energy-storage travelling wave tube C_CS2 Charging.When lighting switch 1311 and being switched on, voltages of the second switch T12A according to stored by the second energy-storage travelling wave tube C_CS2 and Conducting, and the 3rd transmission switch 1315 in level setting unit 1313 is led according to the voltage of the second energy-storage travelling wave tube 1317 It is logical.Therefore, the second LED₂It is lit.

Figure 13 B are a possible embodiment of the pixel cell of the disclosure.Pixel cell 1300B includes one first transmission and opened 1301, one first energy-storage travelling wave tube 1303 of pass, one first luminescence unit 1305B, one second luminescence unit 1307B, one the 3rd light Unit 1309B, one light switch 1311, a level setting unit 1313 and an OR-NOT circuit 1321.Due to Figure 13 B's First the 1301, first energy-storage travelling wave tube 1303 of transmission switch, the characteristic and figure for lighting switch 1311 and level setting unit 1313 13A first the 1301, first energy-storage travelling wave tube 1303 of transmission switch, the spy for lighting switch 1311 and level setting unit 1313 Property is similar, therefore repeats no more.

First luminescence unit 1305B includes a first switch T11B and one first LED₁.First switch T11B is a N-type transistor, and its grid couples the first energy-storage travelling wave tube 1303, its first LED of coupling that drains₁'s Switch 1311 is lighted in negative electrode, the coupling of its source electrode.First LED₁Anode receive the first operating voltage VDD.

Second luminescence unit 1307B includes a second switch T12B and one second LED₂.Second switch T12B is a N-type transistor, and its grid couples the output end OUT of OR-NOT circuit 1321, its second light-emitting diodes of coupling that drain Pipe LED₂Negative electrode, its source electrode coupling light switch 1311.Second LED₂Anode receive the first operating voltage VDD。

3rd luminescence unit 1309B includes one the 3rd switch T13B and one the 3rd LED₃.3rd switch T13B is a N-type transistor, and the switches of the second input IN2 and one 1323 of its grid coupling OR-NOT circuit 1321, it leaks Pole couples the 3rd LED₃Negative electrode, its source electrode coupling light switch 1311.3rd LED₃Sun Pole receives the first operating voltage VDD.

Switch 1323 switchs T13B to provide the first operating voltage VDD or the second operating voltage VSS to the 3rd.One In possible embodiment, switch 1323 has a first path and one second path.First path is transmitting the first operating voltage VDD is to the 3rd switch T13B.Second path switchs T13B to transmit the second operating voltage VSS to the 3rd.It may implement one In example, first path or the second path are blown using laser, to control the 3rd switch T13B grid voltage.Another In possible embodiment, switch 1323 determines the behaviour of the first operating voltage VDD of transmission or second according to a control signal (not shown) Make voltage VSS to the 3rd switch T13B.

OR-NOT circuit 1321 has a first input end IN1, one second input IN2 and an output end OUT.The One input IN1 couples first switch T11B and the first energy-storage travelling wave tube 1303.The switch T13B of second input IN2 couplings the 3rd. Output end OUT coupling second switches T12B.In the present embodiment, OR-NOT circuit 1321 include P-type transistor PT1, PT2 with And N-type transistor NT1, NT2.P-type transistor PT1 grid coupling first input end IN1, its source electrode receive the first operation electricity Press VDD.P-type transistor PT2 grid couples the second input IN2, its source electrode coupling P-type transistor PT1 drain electrode.N-type Transistor NT1 grid coupling first input end IN1, its coupling P-type transistor PT2 that drains drain electrode, its source electrode receive second Operating voltage VSS.N-type transistor NT2 grid couples the second input IN2, its coupling P-type transistor PT2 that drains leakage Pole, its source electrode receive the second operating voltage VSS.

In the present embodiment, it is luminous single by first by control first input end IN1 and the second input IN2 level First 1305B, the second luminescence unit 1307B or the 3rd luminescence unit 1309B are as a preset emission unit.For example, when First input end IN1 is one first level (such as high level) and the second input IN2 is a second electrical level (such as low level) When, the first luminescence unit 1305B is set a preset emission unit.Now, the second luminescence unit 1307B and the 3rd is luminous single First 1309B is as back lit unit.In this instance, when the first scanning signal CSCAN is enabled, the first transmission switch 1301 transmission first choice signal CS1 give the first energy-storage travelling wave tube 1303, to be charged to the first energy-storage travelling wave tube 1303, and the Two transmission switch 1319 transmission data-signal DT give the second energy-storage travelling wave tube 1317, to be charged to the second energy-storage travelling wave tube 1317.When When lighting signal EM and being enabled, light switch 1311 and be switched on.Now, first switch T11B is according to the first energy-storage travelling wave tube 1303 Stored voltage and be switched on.In addition, the 3rd transmission switch 1315 in level setting unit 1313 is according to the second energy storage member The voltage of part 1317 and turn on.Therefore, the first LED₁It is lit.

In another possible embodiment, when first input end IN1 and the second input IN2 is second electrical level (such as low electricity It is flat) when, P-type transistor PT1 turns on P-type transistor PT2, and therefore, the second luminescence unit 1307B is set a preset emission Unit.Because first input end IN1 and the second input IN2 are second electrical level, therefore, the first luminescence unit 1305B and the 3rd Luminescence unit 1309B is as back lit unit.In this instance, when the first scanning signal CSCAN is enabled, the first transmission The transmission of switch 1301 first choice signal CS1 give the first energy-storage travelling wave tube 1303, to be charged to the first energy-storage travelling wave tube 1303, and And the transmission data-signal DT of the second transmission switch 1319 gives the second energy-storage travelling wave tube 1317, to be filled to the second energy-storage travelling wave tube 1317 Electricity.When lighting signal EM and being enabled, light switch 1311 and be switched on.Now, second switch T12B is according to the first energy-storage travelling wave tube Voltage stored by 1303 and be switched on.In addition, the 3rd transmission switch 1315 in level setting unit 1313 is according to the second storage Can element 1317 voltage and turn on.Therefore, the second LED₂It is lit.

In other embodiments, when first input end IN1 is second electrical level (such as low level) and the second input IN2 For the first level (such as high level) when, due to the 3rd switch T13B conducting, therefore, it is pre- that the 3rd luminescence unit 1309B is set one If luminescence unit.Now, because first switch T11B and second switch T12B are not turned on, therefore, the first luminescence unit 1305B And second luminescence unit 1307B as back lit unit.In this instance, when the first scanning signal CSCAN is enabled, the One transmission switch 1301 transmission first choice signal CS1 give the first energy-storage travelling wave tube 1303, to the first energy-storage travelling wave tube 1303 Charging, and the transmission data-signal DT of the second transmission switch 1319 charges to the second energy-storage travelling wave tube 1317.When lighting signal EM quilts During enable, light switch 1311 and be switched on.Now, voltages of the 3rd switch T13B according to stored by the first energy-storage travelling wave tube 1303 And it is switched on.In addition, the 3rd transmission in level setting unit 1313 switchs 1315 voltages according to the second energy-storage travelling wave tube 1317 And turn on.Therefore, the 3rd LED₃It is lit.

Figure 13 C are another possible embodiment of the pixel cell of the disclosure.Pixel cell 1300C includes one first transmission Switch 1301, one first energy-storage travelling wave tube 1303, one first luminescence unit 1305C, one second luminescence unit 1307C, one the 3rd hair Light unit 1309C, one light switch 1311, a level setting unit 1313 and an OR-NOT circuit 1321.Due to Figure 13 C First the 1301, first energy-storage travelling wave tube 1303 of transmission switch, light switch 1311, be the first luminescence unit 1305C, second luminous Unit 1307C, the 3rd luminescence unit 1309C characteristic and Figure 13 B first transmission the 1301, first energy-storage travelling wave tube of switch 1303rd, switch 1311, the first luminescence unit 1305B, one second luminescence unit 1307B, one the 3rd luminescence unit 1309B are lighted Characteristic it is similar, therefore repeat no more.

In the present embodiment, the second scanning signal DSCAN is different from the first scanning signal CSCAN.May embodiment one In, when first, which sweeps signal CSCAN, is enabled, the second scanning signal DSCAN is not enabled, and sweeps signal DSCAN and is caused when second During energy, the first scanning signal CSCAN is not enabled.In addition, in Figure 13 C, the first luminescence unit 1305C, one second hair are specified Light unit 1307C or the 3rd luminescence unit 1309C is that the method for a preset emission unit is identical with Figure 13 B designation method, Therefore repeat no more.

When the first scanning signal CSCAN is enabled, the transmission reference signal REF of the first transmission switch 1301 is to the first storage Can element 1303.Therefore, the first energy-storage travelling wave tube 1303 charges according to reference signal REF.When the second scanning signal DSCAN quilts During enable, the second transmission switch 1319 transmission reference signal REF give the second energy-storage travelling wave tube 1317.Therefore, the second energy-storage travelling wave tube 1317 charge according to reference signal REF.When lighting signal EM and being enabled, light switch 1311 and be switched on.Now, preset Luminescence unit is lit.

Figure 14 is another possible embodiment of the pixel cell of the disclosure.As illustrated, pixel cell 1400 includes, one The first transistor 1401, a second transistor 1403, an energy-storage travelling wave tube 1405, a third transistor 1407, a light emitting diode 1409 and a sensing element 1411.

The grid of the first transistor 1401 receives scan signal SCAN, and it, which drains, receives a data-signal DT.In this reality Apply in example, the first transistor 1401 is N-type, but and is not used to limit the disclosure.In other embodiments, the first transistor 1401 can also be replaced as p-type.The disclosure does not limit data-signal DT type.Data-signal DT may be voltage signal Or current signal.

The source electrode of the grid coupling the first transistor 1401 of second transistor 1403 and energy-storage travelling wave tube 1405, its drain electrode connect Receive the first operating voltage VDD.In a possible embodiment, the species of second transistor 1403 is identical with the first transistor 1401. As illustrated, the first transistor 1401 and second transistor 1403 are all N-types, but and it is not used to limit the disclosure.In other realities Apply in example, the species of second transistor 1403 is different from the first transistor 1401.For example, the first transistor 1401 and One in two-transistor 1403 is N-type, and the first transistor 1401 and another in second transistor 1403 are P Type.

The source electrode of one end coupling the first transistor 1401 of energy-storage travelling wave tube 1405, its other end coupling second transistor 1403 source electrode.In the present embodiment, energy-storage travelling wave tube 1405 is an electric capacity, but and is not used to limit the disclosure.It is any to store up Energy-storage travelling wave tube 1405 can be used as by depositing the element of energy.

The grid of third transistor 1407 receives one and lights signal EM, and its source electrode couples the source electrode of second transistor 1403. In the present embodiment, the species of third transistor 1407 is different from the species of the first transistor 1401.As illustrated, first is brilliant Body pipe 1401 is N-type, and third transistor 1407 is p-type, but and is not used to limit the disclosure.In other embodiments, the 3rd is brilliant The species of body pipe 1407 is same as the first transistor 1401 or second transistor 1403.

The drain electrode of the anode coupling third transistor 1407 of light emitting diode 1409, its negative electrode receive the second operating voltage VSS.Sensing element 1411 senses the brightness of light emitting diode 1409, to produce a feedback signal SFB.The disclosure is simultaneously unlimited Determine the species of sensing element 1411.Any element that can detect light luminance, it can be used as sensing element 1411.Can one In energy embodiment, sensing element 1411 is a light emitting diode.

In the present embodiment, one source driver 1410 receives and records feedback signal SFB.As illustrated, source drive Device 1410 has a memory cell 1413, to record the sensing result of each sensing element.In addition, source electrode driver 1410 With a GTG table 1415.GTG table 1415 records the brightness value corresponding to different data-signals.

In a possible embodiment, controller 1417 first according to the record result of GTG table 1415, produces appropriate data Signal DT, to control light emitting diode 1409 to send a predetermined luminance.Controller 1417 is learnt further according to feedback signal SFB Whether the brightness of light emitting diode 1409 is equal to the predetermined luminance.When the brightness of light emitting diode 1409 is default bright not equal to this When spending, controller 1417 controls scanning signal SCAN, data-signal DT with lighting at least one of signal EM, to adjust hair The brightness of optical diode 1409.In another possible embodiment, controller 1417 and indirect adjustment light emitting diode 1409 Brightness.In this instance, controller 1417 may adjust the brightness of the adjacent pixel cell (not shown) of pixel cell 1400, Drifted about to compensate the brightness of light emitting diode 1409.

Figure 15 A are a possible control sequential figure of the pixel cell of the disclosure.It please coordinate Figure 14,1501 during a frame, Scanning signal SCAN is enabled once.When scanning signal SCAN is enabled, the first transistor 1401 is switched on.Energy-storage travelling wave tube 1405 charge according to data-signal DT.It is enabled due to lighting signal EM, therefore, third transistor 1407 is switched on, and is lighted Diode 1409 is lit.When scanning signal SCAN is not enabled, second transistor 1403 is stored up according to energy-storage travelling wave tube 1405 The voltage deposited and turn on.Therefore, it is lit in period 1502, light emitting diode 1409, wherein symbol BT represents light-emitting diodes The brightness of pipe 1409.

In period 1503, if controller 1417 learns that the brightness of light emitting diode 1409 is not equal to a predetermined luminance, Signal EM is lighted in the not enable of controller 1417.Therefore, light emitting diode 1409 stops luminous.In period 1504, controller 1417 Signal EM is lighted in enable once again.Therefore, light emitting diode 1409 lights once again.In the present embodiment, controller 1417 is according to hair Difference between the intrinsic brilliance and predetermined luminance of optical diode 1409,1503 duration during adjustment.Work as light-emitting diodes When total fluorescent lifetime of pipe 1409 is longer, the brightness that light emitting diode 1409 is presented is brighter.In another possible embodiment, Controller 1417 adjusts the brightness of light emitting diode 1409.In this instance, in period 1504, light emitting diode 1409 it is bright Degree could possibly be higher than or less than the brightness in period 1502.

Figure 15 B are a possible control sequential figure of the pixel cell of the disclosure.Figure 15 B similar diagram 15A, difference exist In, when light emitting diode 1409 is not luminous, controller 1417 transmits extra carrier 1505 by pixel cell 1400, to Control the peripheral device near display panel.

For example, user transmits control command to display panel, controller possibly also with remote control or mobile phone 1417 produce extra carrier 1505 according to control command.Electronic installation near display panel receives extra carrier 1505 When, a specific action is just carried out, as desk lamp is lit or cold air is activated.In another possible embodiment, controller 1417 Caused extra carrier is incorporated into the light that light emitting diode 1409 is sent.When light emitting diode 1409 sends a light During line, the light has a carrier wave, to drive an external device (ED).The external device (ED) acts according to the carrier wave on the light, With a bright desk lamp or start cold air.

Unless otherwise defined, all vocabulary (including technology and scientific terms) belong to disclosure art herein Technical staff general understanding.In addition, unless clear expression, definition of the vocabulary in general dictionary should be interpreted that and its phase It is consistent to close meaning in the article of technical field, and should not be construed as perfect condition or too formal voice.

Although the disclosure is disclosed as above with preferred embodiment, so it is not limited to the disclosure, people in the art Member is not being departed from spirit and scope of the present disclosure, when can make a little change and retouching.For example, the embodiment of the present disclosure Disclosed system, device or method can be subject to reality with the physical embodiment of the combination of hardware, software or hardware and software It is existing.Therefore the protection domain of the disclosure is worked as and is defined depending on appended claims confining spectrum.

Claims

1. a kind of display panel, including：

First current source；

First pixel cell, including：

First switch, it is electrically connected with first current source and receives the first scanning signal, wherein when the first scanning signal quilt During enable, the first switch is switched on and receives the first electric current from first current source；And

First light emitting diode, couple the first switch, wherein when the first switch is switched on, first electric current flow through this One light emitting diode, to light first light emitting diode.

2. display panel as claimed in claim 1, in addition to：

Compensation circuit, there is first end and the second end, the wherein first end couples the first switch, second end couple this first Light emitting diode, the compensation circuit is compensating the critical voltage of the transistor.

3. display panel as claimed in claim 1, in addition to：

Second switch, the second scanning signal is received, wherein when second scanning signal is enabled, the second switch is switched on；

Second light emitting diode, couple the second switch, wherein when the second switch be switched on when, the second electric current flow through this second Light emitting diode, to light second light emitting diode；And

Sensing element, the brightness of first light emitting diode is sensed, to produce feedback signal.

4. display panel as claimed in claim 1, in addition to：

ESD protection circuit, couple the first switch.

5. display panel as claimed in claim 1, in addition to：

Discharge circuit, data wire is coupled, to discharge the voltage on the data wire.

6. display panel as claimed in claim 5, in addition to：

Second light emitting diode, couple the second switch, wherein when the second switch be switched on when, the second electric current flow through this second Light emitting diode, to light second light emitting diode, wherein when first and second switch is not turned on, electric discharge electricity Road discharges the voltage on the data wire.

7. display panel as claimed in claim 1, wherein first pixel cell also include：

Electric capacity, couple the first switch；

P-type transistor, it is series between the first switch and first light emitting diode；And

N-type transistor, is series at the first switch, and the grid of the wherein P-type transistor couples the grid of the N-type transistor.

8. display panel as claimed in claim 1, in addition to：

Substrate；And

Insulating barrier, on the substrate, wherein the insulating barrier includes the first groove and the second groove, wherein first light-emitting diodes Pipe has first electrode and second electrode, first groove to put the first electrode, second groove to put this Two electrodes.

9. a kind of display panel, including：

Pixel cell, including：

First transmission switch, receives the first scanning signal and first choice signal；

First energy-storage travelling wave tube, couple the first transmission switch；

First luminescence unit, including：

First switch, couple first energy-storage travelling wave tube；And

First light emitting diode, couple the first switch；

Second luminescence unit, first luminescence unit in parallel, and including；

Second switch；And

Second light emitting diode, couple the second switch；

Switch is lighted, couples first luminescence unit and second luminescence unit, and receive and light signal；And

Level setting unit, couple this and light switch, switch is lighted to this to provide predetermined level.

10. display panel as claimed in claim 9, wherein second luminescence unit also include：

3rd switch, receives first scanning signal and the second selection signal；And

Second energy-storage travelling wave tube, couple the 3rd switch.

11. display panel as claimed in claim 10, the wherein level setting unit include：

Second transmission switch, receives data-signal and first scanning signal；

3rd transmission switch, couple the second transmission switch and light switch with this；And

Second energy-storage travelling wave tube, couple the second transmission switch and switched with the 3rd transmission.

12. display panel as claimed in claim 11, in addition to：

OR-NOT circuit, has first input end, the second input and output end, and the first input end couples first energy storage Element, the output end couple the second switch.

13. display panel as claimed in claim 9, the wherein level setting unit include：

Second transmission switch, receives the first choice signal and the second scanning signal；

Second energy-storage travelling wave tube, couple the second transmission switch and switched with the 3rd transmission, wherein when the second transmission switch conduction When, the second transmission switch provides the first choice signal and gives second energy-storage travelling wave tube, to be charged to second energy-storage travelling wave tube.

14. a kind of display panel, including：

An at least pixel cell, including：

The first transistor, there is first grid, the first drain electrode and the first source electrode, the first grid to receive scanning signal, this One drain electrode receives data-signal；

Second transistor, there is second grid, the second drain electrode and the second source electrode, the second grid to couple first source electrode, should Second drain electrode receives the first operating voltage；

Energy-storage travelling wave tube, couple first source electrode and second source electrode；

Third transistor, there is the 3rd grid, the 3rd drain electrode and the 3rd source electrode, the 3rd grid to receive and light signal, this Three source electrodes couple second source electrode；

Light emitting diode, there is anode and negative electrode, the anode couples the 3rd drain electrode, and the negative electrode receives the second operating voltage； And

Sensing element, the brightness of the light emitting diode is sensed, to produce feedback signal.

15. display panel as claimed in claim 14, in addition to：

Controller, the feedback signal is made comparisons with preset signals, to produce comparative result, and adjusted according to the comparative result The data-signal.

16. display panel as claimed in claim 14, wherein first and second transistor are N-type transistor, the 3rd is brilliant Body pipe is P-type transistor.

17. display panel as claimed in claim 14, the wherein light emitting diode send a light, the light has carrier wave, To drive external device (ED).