TWI360088B - Pixel circuit and display device having the pixel - Google Patents

Description

1360088 IX. Description of the Invention: [Technical Field] The present invention relates to a circuit and a display, and _ refers to an electromechanical excitation photodiode display, and a pixel circuit therewith. [Prior Art] Referring to Fig. 1 'the conventional organic electroluminescent diode display is capable of displaying an image by a plurality of pixel circuits of different colors on the screen. The pixel circuits are arranged in an array, each pixel circuit can display a color, and includes an organic electroluminescent diode (〇rganic Light)

Diode' hereinafter referred to as OLED 71 and a driver unit 72. Each of the 〇led 71 can be energized to emit one of three colors of red, green and blue. The driving unit 72 receives a scan signal s, a reset signal RESET and a data Vdata from the outside, and determines the amount of current outputted to the OLED 71 by the value of the data ν_ to drive the 〇LED 71 to emit light at the pixel. The position where the circuit is located shows a color. The driving unit 72 includes a transistor T1, a switch 720 having a transistor T2 and an transistor Τ3, a transistor τ4, and a capacitor. The transistors τι to Τ4 are p-type metal oxide semiconductors (JMype Metal 〇xide Semiconductor hereinafter referred to as PM 〇s). The drain of the transistor τι is electrically connected to the anode of the OLED 71, and the source is electrically connected to a high potential terminal of a certain voltage source VDD of the outside, the drain of the transistor T2 receives the data Vdata, and the gate thereof receives The scan signal S. The source of the transistor T3 is electrically connected to the source of the transistor T2, and its 1360088 gate is electrically connected to its drain, one end of the capacitor C, the source of the transistor T4, and the gate of the transistor Τ1. . The other end of the capacitor C is electrically connected to the high potential terminal of the constant voltage source VDD, and the gate of the transistor Τ4 is electrically connected to the drain and receives the reset signal RESET. When the scan signal S causes the transistor T2 to be in an on state, the data VDATA is written through the transistor T3 to the gate of the transistor T1 and the capacitor C, and the driving unit 72 outputs according to the data V DATA . A current (not shown) to the OLED 71, the current can be expressed by the following equation: I = KP1x [VDD - (VDATA - Vth3) - Vthl] 2 Equation (1) where I is the current value of the current 'Vth3 V\hi is the threshold voltage of the transistor T3 and the transistor T1, respectively, KP1=(l/2hCox(W/L), and W and L are respectively the channel width of the transistor T1. And length, μ is the hole migration velocity, C〇x is the gate oxide unit capacitance (capacitance per unit area) ° due to the circuit layout (layout) The position of the transistor T1 and the transistor Τ3 is very close, and VthlNVth3 is made, so that the current I=Kp1x[VDD-Vdata]2 can be known from the equation (1). Therefore, the transistors T3 and T1 are brought close to each other. The current I can be completely determined by the constant voltage source VDD and the value of the data Vdata. When the transistor T2 is in a non-conducting state, the written data VDATA will be held, and the driving unit 72 continues to output current to the 〇LED 71 according to the value of the write data Vdata. To avoid the scan signal S being equal to low. At the potential, the 1360088 gate potential of the transistor T1 is still at the value of the data Vdata, so that the data can not be transmitted to the gate of the transistor T1, before the scan signal s is set to a low potential - for a short period of time The reset «set will be set to a low potential first to clear the charge stored in the transistor T1 through the transistor n T4 so that the potential of the gate of the transistor T1 is low. When the signal RESET is set to a low potential and the gate of the transistor is extremely low, the driving unit 72 will output current to the

〇"LED 71' causes the drive unit 72 to output current before the transistor T1 has received the data vDATA from the switch 720, which shortens the service life of the OLED 71.

. The pixel circuits of the parent column receive the low-potential signal simultaneously and the pixel circuits sequentially receive the scan signal S in units of columns from top to bottom. When the pixel circuit of the first column receives the low-potential scan signal S, the (10) D71 of the pixel circuit is determined to be illuminated by the data Vdata value corresponding to the received pixel circuit. Then, the pixel circuit of the second column is connected to (4) the low-frequency scanning money S, and determines whether the column 71 of each column of the pixel circuit emits light. At this time, the scanning money S received by the pixel circuit on the first column is high. m is determined by the capacitance of the county-pixel circuit C, whether the 0led7 of the pixel circuit emits light. According to the image (four) of each column on the electric screen, it is determined whether the OLED 71 of each pixel circuit emits light. Therefore, for the any-pixel circuit, only the sector to be scanned is low, and the data VJ corresponding to each pixel circuit and the LED 71 of the pixel circuit emit light. Other unswept cats: Time I is held by the voltage value stored by the capacitance c of the pixel circuit to maintain the illumination state of the LED 71 of the pixel circuit. + Since the display (four) picture is only (10) times per second, the pixel circuit is not swept / the time is very long and is approximately 16 6ms'. The voltage value must be maintained for a long period of time to maintain the state of illumination of the pixel circuit. However, the pixel circuit is fabricated on a low temperature polycrystalline stone (i〇w tempe嶋re p〇ly_silic〇n 'abbreviated as LTps) or an amorphous system (A Sakih Ph〇us), which is often caused by leakage. The stored charge is lost and the voltage across it is lowered, which affects the illuminating state of the 〇led η. If the capacitance value of the capacitor can be increased to be greater than a critical value, the power loss caused by the leakage problem can be effectively improved. In addition, because the number of pixel circuits of the OLED display is large, the size of the fabricated capacitor C is not easy to control, and the picture quality of the entire squirrel display is often changed by the capacitance of only a small portion of the pixel circuit. There will be bright spots or dark spots, so if the capacitance C can be adjusted after the capacitor C is fabricated so that the capacitance value of each capacitor c is not less than the critical value, the defect rate of the OLED display can be effectively reduced. . However, the conventional pixel circuit cannot adjust the size of the capacitor C. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a pixel circuit in which the voltage difference across the capacitance of the pixel circuit can be adjusted to increase the capacitance of the capacitor. Therefore, another object of the present invention is to provide a display in which the capacitance value of each pixel circuit of the display can be adjusted. !360〇88 Thus, the pixel circuit of the present invention is electrically connected between a high potential end and a low potential end of a certain voltage source of the outside world, and can receive a modulated signal input by the outside world, and a scan signal 'a reset signal And a data circuit comprising an organic electroluminescent diode, a first transistor, a switch, a capacitor and a fourth transistor. The cathode of the organic electroluminescent diode is coupled to the low potential end of the constant voltage source. A first end of the first transistor is electrically coupled to a high potential end of the constant voltage source and a third end thereof is electrically coupled to an anode of the organic electroluminescent diode. The switch is electrically coupled to the second end of the first transistor and receives the scan signal and the data, and is controlled by the scan signal to determine whether to transmit the data to the second end of the first transistor. One end of the capacitor is electrically connected to the second end of the first transistor, and the other end receives the modulated signal to modulate the capacitance value of the first transistor by the modulation signal. The third end is electrically connected to both ends of the capacitor, and the second end thereof receives the reset signal to set a voltage value across the capacitor. Thus, the display of the present invention comprises a plurality of pixel circuits as described above, wherein the pixel circuits are arranged in an array, and the pixel circuits on the same column receive the same-scan signal but different data, and the pixel circuits on the same line receive differently. The scan signal received by the W-number but the same data and the pixel circuit of each column is the reset signal of the adjacent lower-column pixel circuit. [Embodiment] 10 1360088 The foregoing and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Referring to FIG. 2 to circle 4, a preferred embodiment of the pixel circuit of the present invention comprises an OLED 11, a capacitor c, a first transistor (4), a switch 120 having a second transistor M2 and a third transistor M3. a fourth transistor M4 and a fifth transistor ^ M5' the pixel circuit is electrically connected to a certain electric dust of the outside

A modulation signal between the 〒 potential terminal and the low potential terminal of the source VDD and receiving the external input, the scan signal S' - the enable signal EN and a data

Vdata ° The OLED 11 has its cathode depleted to the low potential end of the constant voltage source vdd. The first end of the electric B body M1 is electrically connected to the high potential end of the constant voltage source VDD' and the third end thereof The second end of the fifth transistor M5 receives the enable signal (10), and the second end of the fifth transistor M5 is electrically connected to the anode of the OLED 11. The terminal of the capacitor C is electrically connected to the second end of the first transistor state, and the other end thereof is electrically connected to the third end of the fourth transistor M4 and receives the modulation signal REG′ to be modulated by the modulation. The signal REG modulates its capacitance value. The first end of the second transistor M2 receives the data Vdata, and the second end thereof receives the scan signal s, and the third end thereof is electrically connected to the first end of the third transistor (4), the third transistor river The second end and the third end of 3 and - the first - ray of the transistor Ml; The first & electrical connection. The second transistor M2 is subjected to the sweep. The number s(4) is transmitted to the second end of the first transistor Μ1 through the third transistor 11 1360088 M3 in a decisive manner. The two terminals are electrically connected to the capacitor RESET. The first end and the second end of the fourth transistor 4, and the second end thereof receives the reset signal 'The transistors M1 M M5 are the second ends of the bodies M1 M M5 are gates in the present invention In the preferred embodiment, the PMOS process is fabricated, and each of the capacitors c is electrically connected with the source and the drain. The drain and the gate of the PMOS are respectively the ends of the capacitor. . Since the substrate potential of the PMOS is the same as the source potential, the carrier concentration of the depletion region of the channel can be controlled by changing the voltage Vsg between the source and the gate of the PMOS transistor (carder c〇ncentrati〇) n), in turn changing the capacitance value of the capacitor. Figure 4疋5 shows the relationship between the voltage across the c (equal to Vsg) and the capacitance value, 彳κ axis 疋 PM0S transistor voltage and the voltage between the gate and the unit is volt (voltage), while the vertical axis is the capacitor The value is in Farad. If the voltage vSG across the capacitor C is increased beyond a certain value, the capacitance of the capacitor C is not less than the threshold. Therefore, by electrically connecting the third ends of the fourth transistor M4 of each pixel circuit together, and increasing the modulation signal REG to an appropriate value, the voltage VSG across the capacitor c is always greater than the specific value. The capacitance c of each pixel circuit can be all increased, so that the capacitance value of each capacitor C is not less than the critical value. Referring to FIG. 3, in the first period P1, the reset signal RESET is low (Low) to turn on the fourth transistor M4, so both ends of the capacitor C are short-circuited by the fourth transistor M4. The voltage value 12 1360088 stored by the capacitor c is cleared. At this time, the enable signal ΕΝ is high (High) and the fifth transistor M5 is not turned on. Therefore, the first transistor M1 does not output current to the OLED 11, thereby increasing the use of the 〇LED 11. life. During the first period P2, the scan signal s is low, because the voltage value stored by the capacitor C has been cleared during the first period P1, so the data vDATA will pass through the second transistor M2 and the third transistor. M3 is transferred to the capacitor C. At this time, the enable signal is low, so the first transistor M1 can output a current to the 〇LED n to drive its light. Referring to Figure 5, there is shown a preferred embodiment of the display of the present invention which utilizes a plurality of pixel circuits as described above and which are arranged in an array. The pixel circuit of the first column receives a first scan signal S1 & a first enable signal fine ' and the pixel circuit of the second column receives a second scan signal μ and a second enable signal EN2, the first The second scan signals si, Μ are sequentially set to a low potential. For the pixel circuit of the second column, since the page 4 of the column received by the column is set to the low field before the second scan signal %, the pixel circuit of the first column is adjacent to the pixel circuit of the second column. Therefore, in order to save the area of the circuit wiring and make the line wiring easy, the preferred real helmet of the display of the present invention uses the first visible signal S1 of 5 hai as the pixel circuit of the first column. . The known signal received by the pixel circuits of each of the other columns is also an apostrophe, which is a reset t-stream of the adjacent lower-column pixel circuit, but is not limited thereto. Noteworthy H A-

The process of making each of the M-plane OS of the transistor, for example, is also... - The flutes (4) 8 of the transistors M1 to M5 do not, and adjust the potential of the signal received at each second end to make each-electricity 13 < S ) 1360088 Crystals m to M5 can be switched between conduction and non-conduction. _ 6 towel bodies M1 to M5 are all made by the process of NM〇s, and in Fig. 7 - the fourth transistor M1 to M4 are made of PM 〇s and the first: the crystal M5 is NM0S Process production. In the figure, the transistors M1 to M4 are fabricated by the process of NM〇s and the ^5=M5 is fabricated by the PMOS process. Further, the capacitor c is not limited to being fabricated by a PMOS process, and may be fabricated by a process of 〇8. Since the replacement of the types of the transistors M1 to M5 and the adjustment of the signal potential per _ are well known to those skilled in the art, they will not be described again. In summary, the end of the capacitance c of the conventional pixel circuit is the high potential end of the fixed voltage source VDD which is fixed to the bit, and the size of the capacitor C cannot be adjusted. The end of the capacitance c of the pixel circuit of the present invention is Receiving a modulation M REG whose potential value can be adjusted, and by increasing the modulation (4) REG to a specific value, the capacitance value of the capacitance c of all the pixel circuits is not less than the critical value, thereby reducing the product defect rate of the display, It is indeed possible to achieve the object of the present invention. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram illustrating a conventional pixel circuit; FIG. 2 is a circuit diagram of a pixel circuit according to a preferred embodiment of the present invention, 14 < S ) 1360088, FIG. The timing diagram of the ^ indicates the signal timing of the sweep signal, the _ data, the reset signal, and the enable signal received by the pixel circuit of the preferred embodiment; FIG. 4 疋—the relationship between the capacitance value and the voltage across the capacitor Figure 5 is a circuit diagram of a preferred embodiment of the display of the present invention; 疋 similar to the circuit diagram of Figure 2, illustrating a preferred embodiment of the pixel circuit of the present invention in which five respectively are poorly ZI^ and the other is first to first Five transistors are in the state of NM〇s

The PMOS of the pixel circuit of the present invention is illustrated, and the fifth transistor is similar to the circuit diagram of FIG. 2. In the preferred embodiment, the first to fourth transistors are in the form of an NMOS, and FIG. Similar to the circuit diagram of FIG. 2, in the embodiment of the pixel circuit of the pixel circuit of the present invention, the first to first body in the fourth electrical body is NM〇s and the fifth transistor is PMOS aspect. No electricity day

15 (S )

Claims (1)

X. Patent application scope: A pixel circuit is electrically connected to one of a certain voltage source of the outside world, between a high potential j and a low potential end, and receives a modulated signal input from the outside world, and sweeps the cockroach 5 and a data 'the pixel The circuit comprises: an organic electroluminescence diode, the cathode of which is coupled to the low potential end of the constant voltage source; the first end of the transistor 'electrically connected to the high potential end of the constant voltage source, and the third end thereof The anode of the organic electroluminescent diode is electrically connected; the switch is electrically connected to the second end of the first transistor and receives the scan number and the data, and is controlled by the scan signal to determine whether to transmit the data To a second end of the first transistor; and a capacitor, one end of which is electrically connected to the second end of the first transistor, and the other end of which receives the modulated signal to modulate the modulated signal by the modulated signal Capacitance value. 2. The pixel circuit according to the above-mentioned patent application (4), wherein the modulation signal is sufficiently large that the capacitance value is not less than a critical value. 3. ^巾巾, please special (4) the pixel circuit described in item 2, wherein the electric source X and / and the electrically connected metal oxide semi-conductive edge are fabricated, and the metal oxide semiconductor is The pole and the gate are respectively used as the two ends of the capacitor. The pixel circuit of claim 3, further comprising a fourth transistor, wherein the first end and the third end of the fourth transistor are electrically connected to both ends of the capacitor, and the second end thereof receives the outside The "Wei signal" is set to 17 to determine the voltage across the capacitor. The pixel circuit of item 4, further comprising: a first end of the first __ body between the electric five-ray two transistor and the organic electroluminescent diode and a second t of the first transistor; And the third end is electrically connected to the anode of the organic electroluminescence triode, and the second end receives the external uniform energy signal', and when the resetting is performed, the enabling signal is The fifth non-conducting a is interrupted by a path between the first transistor and the organic electroluminescent diode. 6. The pixel circuit of claim 5, wherein the switch comprises a second transistor and a third transistor, the first end of the second transistor receiving the data, and the second end receiving the The signal is scanned, and the third end thereof is electrically connected to the first end of the third transistor, and the second end of the third transistor, the third end, and the second end of the first crystal are electrically connected. 7. The pixel circuit of claim 6 wherein the transistors are PMOS and the second end of each transistor is a gate. The pixel circuit of claim 6, wherein the first to fourth transistors are PMOS and the fifth transistor is NM〇s, and the second end of each transistor is a gate pole. 9. The pixel circuit of claim 1, further comprising a fourth transistor, wherein the first end and the third end of the fourth transistor are electrically connected to two ends of the capacitor, respectively, and the second end thereof A reset signal from the outside is received to set the voltage across the capacitor. 10. The pixel circuit according to claim 9, further comprising an electric 18 1 JUUUOO connected to the first five transistor, the fifth electric body: the third end electrical connection between the excitation light diodes And the third end of the day (four) end is connected with the first titer of the first transistor, ^ ^ /, the anode of the organic electroluminescent diode, and the uniform signal of the second end of the four detonator And when the heavy port is used to make the fourth transistor ta ^ ^, the enable signal causes a path between the fifth diodes. The transistor and the organic electroluminescent light 11 · A display 'contains 葙I certainly; the U array is arranged in a pixel circuit, and has a number of discreet L and a plurality of scanning signals and receives the complex sighs and makes the same test The pixel circuit on the 接收 receives the same information from the same scanning signal, and the pixel circuit on the same —— receives the different scans, but the same data, the fixed source has a potential end and a low The first pixel circuit includes: an organic electroluminescence diode, the cathode of which is coupled to the low potential end of the constant voltage source; the first transistor, the first Λφ ifo terminal and the constant voltage source The high potential end is electrically connected and the third end is connected thereto. The anode of the organic electroluminescence excitation diode is electrically connected to the first thunder. The second end of the Japanese body is electrically connected and receives the tracing signal. One of the ones and one of the spears, and is controlled by the received scan signal to determine whether the data is transmitted to the second end of the first electrical body; -capacitance One end of the first - electrical connection day body second end, called / other terminal receiving the modulated signal, hereby concept to the modulated signal by modulating its 19 136〇〇88 capacitance value. 12. The display of claim 11, wherein the modulation signal is sufficiently large that the capacitance of each pixel circuit is not less than a critical value. 13. The display according to claim 12, wherein the capacitance of each pixel circuit is made of a metal oxide semiconductor whose source is electrically connected to the drain, and the drain of the metal oxide semiconductor is The gates serve as the two ends of the capacitor. The display device of claim 13, wherein each pixel circuit further comprises a fourth transistor, wherein the first end and the third end of the fourth transistor are electrically connected to the capacitance of the pixel circuit respectively The two ends, and the second end receives the scan signal received by the switch of the previous column of pixel circuits:: sets the voltage across the capacitor of the pixel circuit. • ^ 尸迅的display 15 ‘According to the scope of the patent application ——, 时, 丫, η ηιΓ energy signal, and the same column of pixel circuits receive the same. Each pixel circuit receives different enable signals. And a first end of the fifth transistor of the organic electroluminescent diode connected to the first electrical pixel circuit of the pixel circuit and the anode of the photodiode: a two-pixel circuit Organically, and when the fourth transistor receives the enable signal by its second end, the enable signal causes the pixel-swept finger-sweeping signal to be turned on to interrupt the pixel circuit - ', the road number The five transistors do not conduct, and the paths between the LEDs. The display device of the pixel device includes a second transistor and a third device. The display device of each pixel circuit includes a second transistor and a third device. a transistor, the first end of the second transistor receives the data, and the second end receives the scan signal' and the third end thereof is electrically connected to the first end of the third transistor, the first electrical body The first end, the second end, and the second end of the first crystal of the pixel circuit are electrically connected. The display of claim 16, wherein the transistors are PMOS' and the second end of each transistor is an interpole. The display of claim 16, wherein the first to fourth transistors are PMOS and the fifth transistor is nm〇s, and the second end of each transistor is a gate. The display device of claim 1, wherein each of the pixel circuits further includes a fourth transistor, and the first end and the second end of the fourth transistor are electrically connected to the capacitance of the pixel circuit respectively And the second end receives the scan signal received by the switch of the previous column of pixel circuits to set the voltage across the capacitance of the pixel circuit. 20. The display of claim 19, wherein the display 2 further generates a complex enable signal 'and the same column of pixel circuits receives the same 2 energy signal, and the same row of pixel circuits receive different enablements The signal, the one-pixel circuit further includes a fifth electro-crystallite electrically connected between the first electric crystal 2 of the pixel circuit and the organic electroluminescent diode of the pixel circuit: the first end of the five-electrode The second end of the first transistor of the pixel circuit is electrically connected, the first phase of the first transistor is electrically connected to the anode of the organic electro-active first diode of the pixel circuit, and the second end thereof receives the enable signal, 21 1360088 And when the fourth transistor is caused by the enable signal to interrupt the path between the first light-emitting bodies of the pixel circuit, the fifth transistor that turns on the pixel circuit is controlled to be non-conductive. , a transistor and the organic power of the pixel circuit, the pixel circuit is electrically connected to the external constant voltage source - between the high potential end and the low potential end and receives the external input - the modulated signal, Scanning signal and data, the pixel circuit contains: An organic electroluminescence diode having an anode coupled to a high potential end of the constant voltage source; a transistor having a first end electrically connected to a low potential end of the constant voltage source, and a third end thereof and the organic battery a cathode electrical connection of the excitation light diode, the switch 'electrically connected to the second end of the first transistor and receiving the scan signal and the data, and controlled by the scan signal to determine whether to transmit the data to the first a second end of the transistor; and A capacitor having one end and the other end receiving the modulated signal capacitance value. The second end of a transistor is electrically connected, 'to be modulated by the modulation signal. 22. According to the pixel circuit of claim 21, the modulation signal is large enough that the capacitance value is not less than A critical value. The stomach according to claim 22, wherein the capacitor is made of a metal oxide-like conductor electrically connected to the source and the drain, and the drain of the metal oxide semiconductor With both ends of the gate. The capacitor circuit according to claim 23, further comprising a fourth electrical body, wherein the fourth electrical terminal is electrically connected to the third terminal. The two ends of the capacitor, and the second of which sets the voltage across the capacitor. The pixel circuit of claim 24, further comprising a fifth transistor electrically connected between the first crystal and the organic electroluminescent diode. The fifth mine general office recognizes that the first end of the Le Wu electric corona body is electrically connected to the third end of the first transistor, and the third end is electrically connected to the cathode of the organic electroluminescent diode. The second end receives an external enable signal, and when the reset signal turns on the fourth transistor, the enable signal causes the fifth transistor to be non-conductive to interrupt the first transistor and the Organic electroluminescence stimulates the path between the photodiodes. The pixel circuit of claim 25, wherein the switch comprises a second transistor and a third transistor, the first end of the second transistor of the stomach receives the data, and the second end receives The scan signal is electrically connected to the third end of the third transistor, and the second end of the third transistor and the second end of the first transistor are electrically connected. 27. The pixel circuit of claim 26, wherein the transistors are NMOS and the second end of each transistor is a gate. The pixel circuit of claim 26, wherein the first to fourth transistors are NMOS and the fifth transistor is PM〇s, and the second end of each transistor is a gate pole. The pixel circuit of claim 21, further comprising a fourth transistor, wherein the first end and the third end of the fourth transistor are respectively connected to 23 1360088 to be connected to both ends of the capacitor, and The first _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 30. The pixel circuit of claim 29, comprising: a fifth transistor electrically connected between the fourth (four) organic electroluminescent exciter, the first of the fifth thunder The end is electrically connected to the third end of the first transistor, and the third end is electrically connected to the cathode of the organic electroluminescent diode, and the second wall is pulled from the field to receive an external uniform signal. And when the reset signal turns on the fourth transistor, the s ndt, the enable signal causes the fifth transistor to be non-conducting to interrupt the first transistor and the first transistor Organic electroluminescence stimulates the path between the photodiodes. 31 · The display of small benefits, including; β complex array of pixel circuits, and has a waste source and generates a modulated signal and complex scan signals and receives complex data, and the pixel circuit on the same column receives Same as - scanning different information of the signal 'and the pixel circuit on the same line receives different scan numbers but the same trick, 咕 + 5 疋 疋 voltage source has a high potential end and a low % potential end, and each pixel The circuit comprises: an organic electroluminescent diode, the anode of which is coupled to the high potential end of the constant voltage source; and the first end of the electric body, the first end is electrically connected to the low potential end of the constant voltage source, and the first: r Her pseudo-steel, -%, the cathode electrical connection of the organic electroluminescent diode; the gate is electrically connected to the second end of the first transistor and receives one of the ^ and the data One of them, and is controlled by the scan k of the J to decide whether to transmit the data to the second end of the first 24 transistor; and a capacitor, one end of which receives the modulation from the first and the other end Signal, capacitance value. 32. The display of claim 31, wherein the modulation signal is sufficiently large that the capacitance of each pixel circuit is not less than a threshold. 33. The display according to claim 32, wherein each image The electric valley of the prime circuit is made of a metal oxide semiconductor whose source is connected to the electrodeless electrode, and the gate and the gate of the metal oxide semiconductor are respectively used as the ends of the capacitor. 34. The display according to claim 33, wherein each pixel circuit further comprises a fourth transistor, wherein the first end and the third end of the fourth transistor are electrically connected to the capacitance of the pixel circuit respectively And the second end receives the scan signal received by the switch of the upper-column pixel circuit to set the voltage across the capacitance of the pixel circuit. The second end of the transistor is electrically connected to be modulated by the modulation signal. The display according to claim 34, wherein the display further generates a complex enablement k胄 and the same column of pixels The circuit receives the same enable signal, and the pixel circuits of the same row receive different enable signals, each pixel circuit 胄 includes a first transistor electrically connected to the U circuit and an organic electrical excitation of the pixel circuit a fifth transistor between the photodiodes, the first end of the fifth electrode body is electrically connected to the first end of the first transistor of the pixel circuit, and the second end is electrically coupled with the organic electroluminescent light of the pixel circuit The cathode of the polar body is electrically connected' and the second end thereof receives the enable signal, and when the fourth transistor is controlled to be turned on by the scan signal it receives, 25' the enable signal causes the image to be scorpion The fifth transistor of the circuit is non-conducting to interrupt the path between the organic electroluminescent diodes of the pixel circuit of the pixel circuit. 36. The display of claim 35, wherein the switch of each pixel circuit comprises a second transistor and a third transistor, the first end of the second transistor receiving the data' The second end receives the scan signal and the third end is electrically connected to the first end of the third transistor, the second end of the second transistor, the third end, and the first crystal of the pixel circuit The two ends are electrically connected. 3 λ. The display of claim 36, wherein the transistors are NMOS and the second end of each transistor is a pole. The display of claim 36, wherein the first to fourth transistors are NMOS and the fifth transistor is pM〇s, and the second end of each transistor is a gate. The display device of claim 31, wherein each pixel circuit further comprises a fourth transistor, wherein the first end and the second end of the fourth transistor are electrically connected to the capacitance of the pixel circuit respectively Both ends, and the second end receives the scan signal received by the switch of the previous column of pixel circuits to set the voltage across the capacitance of the pixel circuit. The display of claim 39, wherein the display further generates a plurality of enable signals, and the same column of pixel circuits receive the same acknowledgement signal, and the pixel circuits of the same row receive different enable signals, The mother-pixel circuit further includes a fifth electrical crystal 26 1360088 body electrically connected between the first transistor of the pixel circuit and the organic electroluminescent diode of the pixel circuit, the first end of the fifth transistor The third end of the first transistor of the pixel circuit is electrically connected to 'and the third end is electrically coupled with the organic electroluminescent light of the pixel circuit, the cathode of the polar body is electrically connected, and the second end thereof receives the enable signal, and When the fourth electrical aa body is controlled to be turned on by the scanning signal it receives, the enabling "will cause the pixel circuit to interrupt the flute of the pixel circuit, both ββ, and the first electrical aa body and the pixel circuit. Electromechanical excitation of the path between the light diodes. 27