CN1450517A - Driving circuit for display device - Google Patents
Driving circuit for display device Download PDFInfo
- Publication number
- CN1450517A CN1450517A CN02105959A CN02105959A CN1450517A CN 1450517 A CN1450517 A CN 1450517A CN 02105959 A CN02105959 A CN 02105959A CN 02105959 A CN02105959 A CN 02105959A CN 1450517 A CN1450517 A CN 1450517A
- Authority
- CN
- China
- Prior art keywords
- transistor
- grid
- source electrode
- coupled
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a kind of driving circuit for monitor. The monitor has many pels, each pel has the first transistor, the second transistor, the third transistor, the fourth transistor, a capacitance, and a luminous element. The invention uses current to drive pel, it is accomplished through n-type non-crystal silicon film transistor, not through the low temperature multi crystal silicon film transistor. It can compensate the effect of different characters in red, green, blue pels by adjusting the ratio of channel width and length of the transistor. It doesn't need the driving integrated circuit to provide different data current.
Description
Technical field
The present invention relates to a kind of display with current driving circuit, and particularly about a kind of display of current driving circuit of amorphous silicon film transistor.
Background technology
The human dynamic image that can see the earliest is the film of documentary film form.Afterwards, the invention of cathode-ray tube (CRT) (Cathode Ray Tube is called for short CRT) successfully derives business-like televisor, and becomes the electrical home appliances of each family's indispensability.Along with development of science and technology, the application of CRT expands to the desktop monitor in the computer industry again, and makes CRT scene many decades nearly.But the made all types of displays of CRT all face the problem of radiant rays, and because the structure of internal electron rifle, and make that display is bulky and take up space, so be unfavorable for thin typeization, lightweight and maximization.
Since above-mentioned problem, and make the researchist start to develop so-called flat-panel monitor (Flat Panel Display).This field comprises LCD (Liquid Crystal Display, abbreviation LCD), Field Emission Display (Field Emission Display, abbreviation FED), vacuum fluorescence nixie display (Vacuum Fluorescent Display, abbreviation VFD), organic LED (Organic Light Emitting Diode, be called for short OLED) and plasma display panel (Plasma Display Panel is called for short PDP).
Wherein, organic LED is called organism electroluminescent display (OrganicElectroluminescence Display) again, and it is the element of self-luminosity, and is the dot matrix type display.Because the characteristic of OLED is DC low-voltage driving, high brightness, high-level efficiency, high correlative value and frivolous, and its luminous color and luster is by red (Red, abbreviation R), green (Green, be called for short G) and blue (Blue, being called for short B) three primary colors are to white degree of freedom height, so OLED is called the development priority that next is a novel planar panel from generation to generation.The OLED technology is except having the frivolous and high resolving power of LCD concurrently, and the active illuminating of LED, response speed is fast with advantage such as power saving cold light source outside, multiple advantages such as the visual angle is wide in addition, color contrast is effective and cost is low.Therefore, and even OLED can be widely used in mobile phone, digital camera, the more large-area display of PDA(Personal Digital Assistant).
From the viewpoint of type of drive, OLED can be divided into passive-matrix (Passive Matrix) type of drive and active-matrix (Active Matrix) type of drive two big kinds.The advantage of passive matrix type OLED is that structure very simply and not needs to use thin film transistor (TFT) (Thin FilmTransistor, be called for short TFT) drive, thereby cost is lower, but its shortcoming is the application that is not suitable for the high resolving power image quality, and when large size panel develops, problem such as can produce that power consumption increases, component life reduces and display performance is not good.And the advantage of active-matrix formula OLED is except the demand that can be applicable to large-sized active matrix drive mode, and its visual angle is wide, high brightness and the fast characteristic of response speed also are very important, but its cost can be slightly higher than passive matrix type OLED.
For active-matrix formula OLED, its mode that drives pixel (Pixel) adopts the mode of current drives usually.Therefore the current drives mode of active-matrix formula OLED need mostly be to use p type TFT or p type TFT to add that n type TFT constitutes in conjunction with the production technology of low temperature polycrystalline silicon (Low Temperature Poli-Silicon is called for short LTPS) TFT usually at present.This is because low temperature polycrystalline silicon TFT has the characteristic of higher electronics and hole mobility, and therefore the and characteristic that the p element in channel is provided can produce than amorphous silicon (Amorphous Silicon, the big drive current of TFT of abbreviation α-Si).For amorphous silicon, the method for there is no is produced suitable p type channel TFT, thus the current drives mode of current pixel, and be not suitable for the use of α-Si TFT.Moreover, in present current driving circuit, drive current mostly equates with data current, so for the different R of characteristic, G and three kinds of pixels of B, must utilize drive integrated circult (Integrated Circuit, be called for short IC) give different data currents, with compensation R, G and three kinds of different effects of pixel characteristic of B.
Summary of the invention
In view of this, the present invention proposes a kind of driving circuit of display.This driving circuit can be finished by the α-Si TFT of n type, and need not use LTPS TFT.And can pass through channel width/channel length ratio of the TFT of adjustment pixel itself, compensate three kinds of different effects of pixel characteristic of red, green, blue, and need not use drive IC to give different data currents.
For reaching above-mentioned and other purpose, the present invention proposes a kind of driving circuit of display.This display comprises a plurality of pixels, and each pixel comprises the first transistor, transistor seconds, the 3rd transistor, the 4th transistor, electric capacity and light-emitting component.Wherein, the first transistor has first drain electrode, first grid and first source electrode, and wherein first drain electrode is coupled to a data-signal electrode, and this data-signal electrode is exported a data current, and first grid is coupled to sweep trace.Transistor seconds has second drain electrode, second grid and second source electrode, and wherein second drain electrode is coupled to first source electrode, and second grid is coupled to sweep trace and first grid.The 3rd transistor has the 3rd drain electrode, the 3rd grid and the 3rd source electrode, and wherein the 3rd drain electrode is coupled to first source electrode and second drain electrode, and the 3rd grid is coupled to second source electrode.The 4th transistor has the 4th drain electrode, the 4th grid and the 4th source electrode, and wherein the 4th drain electrode is coupled to an output positive voltage (V
DD) power supply unit, the 4th grid is coupled to second source electrode and the 3rd grid, and the 4th source electrode is coupled to the 3rd source electrode.Electric capacity has first end and second end, and wherein first end is coupled to second source electrode, the 3rd grid and the 4th grid, and second end is coupled to the 3rd source electrode and the 4th source electrode.And light-emitting component has positive pole and negative pole, and wherein positive pole is coupled to the 3rd source electrode, the 4th source electrode and second end, and negative pole is coupled to earth terminal.
In an embodiment of the present invention, by adjusting the 3rd transistorized channel width/channel length ratio, and the 4th transistorized channel width/channel length ratio, can make the 4th transistorized drive current of flowing through be different from data current.
In an embodiment of the present invention, light-emitting component is organic LED or is polymer LED.
In an embodiment of the present invention, the first transistor, transistor seconds, the 3rd transistor and the 4th transistor can be n type amorphous silicon film transistor (α-Si TFT).
The present invention also proposes a kind of driving circuit of display in addition.This display comprises a plurality of pixels, and each pixel comprises the first transistor, transistor seconds, the 3rd transistor, the 4th transistor, electric capacity and light-emitting component.Wherein, the first transistor has first drain electrode, first grid and first source electrode, and wherein first drain electrode is coupled to a data-signal electrode, and this data-signal electrode is exported a data current, and first grid is coupled to sweep trace.Transistor seconds has second drain electrode, second grid and second source electrode, and wherein second drain electrode is coupled to the data current and first drain electrode, and second grid is coupled to sweep trace and first grid.The 3rd transistor has the 3rd drain electrode, the 3rd grid and the 3rd source electrode, and wherein the 3rd drain electrode is coupled to first source electrode, and the 3rd grid is coupled to second source electrode.The 4th transistor has the 4th drain electrode, the 4th grid and the 4th source electrode, and wherein the 4th drain electrode is coupled to an output positive voltage (V
DD) power supply unit, the 4th grid is coupled to second source electrode and the 3rd grid, and the 4th source electrode is coupled to the 3rd source electrode.Electric capacity has first end and second end, and wherein first end is coupled to second source electrode, the 3rd grid and the 4th grid, and second end is coupled to the 3rd source electrode and the 4th source electrode.And light-emitting component has positive pole and negative pole, and wherein positive pole is coupled to the 3rd source electrode, the 4th source electrode and second end, and negative pole is coupled to earth terminal.
In sum, the present invention can make the mode of current-driven pixel, and the α that passes through-Si TFT finishes, and need not use LTPS TFT.And can pass through channel width/channel length ratio of the TFT of adjustment pixel itself, compensate three kinds of different effects of pixel characteristic of R, G and B, and need not use drive IC to give different data currents.
Description of drawings
For allowing above and other objects of the present invention, feature and advantage, can become apparent more, preferred embodiment cited below particularly, and cooperate appended icon, be described below in detail:
Fig. 1 illustrates is structural drawing according to the driving circuit of the display of a preferred embodiment of the present invention;
Fig. 2 illustrates is circuit diagram according to each pixel in the driving circuit of a preferred embodiment of the present invention display; And
Fig. 3 illustrates is the circuit diagram of each pixel in the driving circuit of the display of another preferred embodiment according to the present invention.
Symbol description among the figure:
10,20,30: pixel
11: the data-signal electrode
12: scan signal electrode
13: data line
14: sweep trace
202,204,206,208,302,304,306,308: transistor
210,310: electric capacity
212,312: organic LED (OLED)
Embodiment
Please refer to Fig. 1, it illustrates is structural drawing according to the driving circuit of the display of a preferred embodiment of the present invention.The structure of this driving circuit is the structure of array, and it comprises data-signal electrode 11, scan signal electrode 12, data line 13 and sweep trace 14.In this embodiment, data-signal electrode 11 meeting supplying electric currents are to data line 13, and scan signal electrode 12 meeting service voltages are to sweep trace 14.In addition, each the bar data line in the data line 13 and each the bar sweep trace in the sweep trace 14 can constitute a pixel 10.
Circuit diagram according to each pixel 20 in the driving circuit of the display of a preferred embodiment of the present invention please refer to Fig. 2 and illustrates.Pixel 20 comprises transistor T 1 (202), transistor T 2 (204), transistor T 3 (206), transistor T 4 (208), capacitor C (210) and OLED (212), and wherein transistor T 1 (202), transistor T 2 (204), transistor T 3 (206) and transistor T 4 (208) are the α-Si TFT of n type.The beneath structure that will narrate pixel 20.
Transistor T 1 (202), T2 (204), T3 (206) are three-terminal element with T4 (208), have a drain electrode, a grid and one source pole respectively.Capacitor C (210) has first end and second end.And OLED (212) has positive pole and negative pole.Wherein, the drain electrode of transistor T 1 (202) can be coupled to the data-signal electrode, and the data-signal electrode can be carried a data current.The grid of the grid of transistor T 1 (202) and transistor T 2 (204) can be coupled to sweep trace.The source electrode of transistor T 1 (202) can be coupled to the drain electrode of transistor T 2 (204) and the drain electrode of transistor T 3 (206).The source electrode of transistor T 2 (204) can be couple to the grid of transistor T 3 (206), the grid of transistor T 4 (208) and first end of capacitor C (210).The source electrode of transistor T 3 (206) can be couple to the source electrode of transistor T 4 (208), second end of capacitor C (210) and the positive pole of OLED (212).The drain electrode of transistor T 4 (208) can be coupled to an output positive voltage (V
DD) power supply unit.And the negative pole of OLED (212) can be couple to earth terminal.
Next will narrate the operation situation of pixel 20.In the present embodiment, the tentation data electric current is 1 μ ampere, and transistor T 3 (206) and transistor T 4 (208) have identical critical voltage (Threshold Voltage).When sweep trace is set in noble potential, can make the grid of transistor T 1 (202) and the voltage (V between the source electrode
Gs1) greater than the critical voltage of transistor T 1 (202), and can make the grid of transistor T 2 (204) and the voltage (V between the source electrode
Gs2) greater than the critical voltage of transistor T 2 (204), and make transistor T 1 (202) and transistor T 2 (204) conductings respectively.At this moment, data current can flow through T1 (202) and T2 (204), and capacitor C (210) is charged.When the voltage of capacitor C (210) charging arrives the critical voltage of transistor T 3 (206), transistor T 3 (206) meeting conductings, the data current of 1 μ ampere is promptly by transistor T 3 (206).Because the critical voltage of transistor T 4 (208) is identical with the critical voltage of transistor T 3 (206),, and flow through the drive current of a current value so transistor T 4 (208) also can conducting.By the voltage that capacitor C (210) is charged, can make the grid of transistor T 3 (206) and the voltage (V between the source electrode
Gs3) be same as the grid of transistor T 4 (208) and the voltage (V between the source electrode
Gs4).Channel width/channel length of supposing transistor T 3 (206) and transistor T 4 (208) is than identical, and then the drive current of transistor T 4 (208) also is 1 μ ampere.In this example, when transistor T 3 (206) and transistor T 4 (208) conductings, the electric current of driving OLED (212) can arrive 2 μ amperes in the of short duration time; When sweep trace is set in electronegative potential, transistor T 1 (202) and transistor T 2 (204) can be closed, this moment, transistor T 3 (206) no currents flow through, but the voltage that capacitor C (210) is charged is still kept, and make transistor T 4 (208) keep the drive current of current value before, use lasting driving OLED (212), and the electric current of driving OLED (212) is identical with the drive current (1 μ ampere) of transistor T 4 (208).And because OLED (212) itself has the characteristic of electric capacity, so 2 of short duration μ Ampere currents help the charging to OLED (212), the state that OLED (212) is reached capacity at faster speed.
Transistor at the formula of the drain current of saturation region is: I
d=(1/2) x μ
nXC
OxX (W/L) x (V
Gs-V
Th)
2, electronics mobility μ wherein
nAnd the grid capacitance C on the unit area
OxBe definite value, V
ThBe transistorized critical voltage, W is transistorized channel width, and L is transistorized channel length.Thus formula as can be known because V
Gs3=V
Gs4So,, promptly can adjust the current ratio of transistor T 3 (206) and transistor T 4 (208) by adjusting the channel width/channel length ratio of transistor T 3 (206) and transistor T 4 (208).Therefore, by adjusting the channel width/channel length ratio of transistor T 3 (206) and transistor T 4 (208), can under identical data current, make the drive current of transistor T 4 (208) be different from data current, therefore can compensate R, G and three kinds of different effects of element characteristic of B.And with the mode of existing a kind of current-driven pixel more as can be known, because the characteristic of three kinds of pixels of red, green, blue of OLED display have nothing in common with each other, therefore must use drive IC to give different data currents, compensate three kinds of different effects of pixel characteristic of red, green, blue.Be noted that acting as data current and only can flowing through selecteed sweep trace of transistor T 1 (202) in addition; And acting as when sweep trace is set in noble potential of transistor T 2 (204) can be charged to capacitor C (210); And when sweep trace is set in electronegative potential, can be used for preventing the discharge of capacitor C (210), and make the V of transistor T 4 (208)
Gs4Be maintained.
And the circuit diagram of each pixel 30 in the driving circuit of the present invention's second preferred embodiment display please refer to Fig. 3 and illustrates.Pixel 30 comprises transistor T 1 (302), transistor T 2 (304), transistor T 3 (306), transistor T 4 (308), capacitor C (310) and OLED (312), and wherein transistor T 1 (302), transistor T 2 (304), transistor T 3 (306) and transistor T 4 (308) are the α-Si TFT of n type.The beneath structure that will narrate pixel 30.
Transistor T 1 (302), T2 (304), T3 (306) are three-terminal element with T4 (308), have a drain electrode, a grid and one source pole respectively.Capacitor C (310) has first end and second end.And OLED (312) has positive pole and negative pole.Wherein, the drain electrode of transistor T 1 (302) can be coupled to the drain electrode and the data-signal electrode of transistor T 2 (304), and the data-signal electrode can be carried a data current.The grid of the grid of transistor T 1 (302) and transistor T 2 (304) can be coupled to sweep trace.The source electrode of transistor T 1 (302) can be coupled to the drain electrode of transistor T 3 (306).The source electrode of transistor T 2 (304) can be couple to the grid of transistor T 3 (306), the grid of transistor T 4 (308) and first end of capacitor C (310).The source electrode of transistor T 3 (306) can be couple to the source electrode of transistor T 4 (308), second end of capacitor C (310) and the positive pole of OLED (312).The drain electrode of transistor T 4 (308) can be coupled to an output positive voltage (V
DD) power supply unit.And the negative pole of OLED (312) can be couple to earth terminal.
Relatively the structure of first preferred embodiment (Fig. 2) and second preferred embodiment (Fig. 3) as can be known, except transistor T 1 (302) and transistor T 2 (304) change into the parallel connection, all the other are all identical.With regard to function, the difference of two embodiment is: when the sweep trace of second preferred embodiment (Fig. 3) was set in noble potential (for example being 15 volts), grid, the source voltage poor (Vgs) of transistor T 1 (302) and transistor T 2 (304) all can reach 15 volts.And when the sweep trace of first preferred embodiment (Fig. 2) was set in noble potential (for example being 15 volts), grid, the source voltage of transistor T 1 (202) poor (Vgs1) added that grid, the source voltage poor (Vgs2) of transistor T 2 (204) just are 15 volts.Therefore, the current ratio of transistor 302 and transistor 304 of the flowing through electric current height of transistor 202 and transistor 204 of flowing through, and make OLED (302) drive current in second preferred embodiment (Fig. 3) than OLED (202) the drive current height in first preferred embodiment (Fig. 2).Except above-mentioned difference, the function of two embodiment is identical.
In sum, the present invention can make the mode of current-driven pixel, and the α-SiTFT by the n type finishes, and need not use low temperature polycrystalline silicon TFT.And can pass through channel width/channel length ratio of the TFT of adjustment pixel itself, compensate three kinds of different effects of pixel characteristic of red, green, blue, and need not use drive IC to give different data currents.
Though the present invention is exposed in preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, thus protection scope of the present invention when with claims and in conjunction with instructions and accompanying drawing the person of being defined be as the criterion.
Claims (11)
1. the driving circuit of a display, this display comprises a plurality of pixels, each pixel comprises:
One the first transistor has one first drain electrode, a first grid and one first source electrode, and wherein first grid is coupled to the one scan line, and first drain electrode is coupled to a data-signal electrode, and the data-signal electrode is exported a data current;
One transistor seconds has one second drain electrode, a second grid and one second source electrode, and wherein second drain electrode is coupled to first source electrode, and second grid is coupled to sweep trace and first grid;
One the 3rd transistor has one the 3rd drain electrode, one the 3rd grid and one the 3rd source electrode, and wherein the 3rd drain electrode is coupled to first source electrode and second drain electrode, and the 3rd grid is coupled to second source electrode;
One the 4th transistor, have one the 4th drain electrode, one the 4th grid and one the 4th source electrode, wherein the 4th drain electrode is coupled to a power supply unit, and power supply unit has a current potential (VDD), the 4th grid is coupled to second source electrode and the 3rd grid, and the 4th source electrode is coupled to the 3rd source electrode;
One electric capacity has one first end and one second end, and wherein first end is coupled to second source electrode, the 3rd grid and the 4th grid, and second end is coupled to the 3rd source electrode and the 4th source electrode; And
One light-emitting component has an anodal and negative pole, and wherein this positive pole is coupled to second end of the 3rd source electrode, the 4th source electrode and electric capacity.
2. the driving circuit of display as claimed in claim 1, it is characterized in that: by adjusting the 3rd transistorized channel width/channel length ratio, and the 4th transistorized channel width/channel length ratio, can make the 4th transistorized electric current of flowing through be different from data current.
3. the driving circuit of display as claimed in claim 1, it is characterized in that: this light-emitting component is an organic LED.
4. the driving circuit of display as claimed in claim 1, it is characterized in that: this light-emitting component is a polymer LED.
5. the driving circuit of display as claimed in claim 1, it is characterized in that: this first transistor, transistor seconds, the 3rd transistor and the 4th transistor are n type amorphous silicon film transistor.
6. the driving circuit of a display, this display comprises a plurality of pixels, each pixel comprises:
One the first transistor has one first drain electrode, a first grid and one first source electrode, and wherein first grid is coupled to the one scan line, and first drain electrode is coupled to a data-signal electrode, and the data-signal electrode is exported a data current;
One transistor seconds has one second drain electrode, a second grid and one second source electrode, and wherein second drain electrode is coupled to the data-signal electrode and first drain electrode, and second grid is coupled to sweep trace and first grid;
One the 3rd transistor has one the 3rd drain electrode, one the 3rd grid and one the 3rd source electrode, and wherein the 3rd drain electrode is coupled to first source electrode, and the 3rd grid is coupled to second source electrode;
One the 4th transistor, have one the 4th drain electrode, one the 4th grid and one the 4th source electrode, wherein the 4th drain electrode is coupled to a power supply unit, and power supply unit has a current potential (VDD), the 4th grid is coupled to second source electrode and the 3rd grid, and the 4th source electrode is coupled to the 3rd source electrode;
One electric capacity has one first end and one second end, and wherein first end is coupled to second source electrode, the 3rd grid and the 4th grid, and second end is coupled to the 3rd source electrode and the 4th source electrode; And
One light-emitting component has an anodal and negative pole, and wherein this positive pole is coupled to the 3rd source electrode, the 4th source electrode and second end.
7. the driving circuit of display as claimed in claim 6, it is characterized in that: by adjusting the 3rd transistorized channel width/channel length ratio, and the 4th transistorized channel width/channel length ratio, can make the 4th transistorized electric current of flowing through be different from data current.
8. the driving circuit of display as claimed in claim 6, it is characterized in that: this light-emitting component is an organic LED.
9. the driving circuit of display as claimed in claim 6, it is characterized in that: this light-emitting component is a polymer LED.
10. the driving circuit of display as claimed in claim 6, it is characterized in that: this first transistor, transistor seconds, the 3rd transistor and the 4th transistor are amorphous silicon n type thin film transistor (TFT).
11. the driving circuit of a display, this display comprises a plurality of pixels, and each pixel comprises:
A plurality of transistors, wherein this transistor is an amorphous silicon n type thin film transistor (TFT); And
One organic LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021059594A CN1261918C (en) | 2002-04-10 | 2002-04-10 | Driving circuit for display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021059594A CN1261918C (en) | 2002-04-10 | 2002-04-10 | Driving circuit for display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1450517A true CN1450517A (en) | 2003-10-22 |
| CN1261918C CN1261918C (en) | 2006-06-28 |
Family
ID=28680115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021059594A Expired - Lifetime CN1261918C (en) | 2002-04-10 | 2002-04-10 | Driving circuit for display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1261918C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353402C (en) * | 2005-05-09 | 2007-12-05 | 友达光电股份有限公司 | Display unit |
| CN100367336C (en) * | 2004-07-13 | 2008-02-06 | 友达光电股份有限公司 | Method for improving current driving type display picture homogeneous degree |
| CN100388339C (en) * | 2004-04-28 | 2008-05-14 | 友达光电股份有限公司 | Pixel element of electroluminescent device, electroluminescent device and operating method thereof |
| CN100444229C (en) * | 2004-10-13 | 2008-12-17 | 三星Sdi株式会社 | Organic light emitting display |
| CN100451795C (en) * | 2006-11-13 | 2009-01-14 | 友达光电股份有限公司 | Pixel structure |
| CN101765873B (en) * | 2007-10-18 | 2012-07-25 | 夏普株式会社 | Current-driven display |
-
2002
- 2002-04-10 CN CNB021059594A patent/CN1261918C/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100388339C (en) * | 2004-04-28 | 2008-05-14 | 友达光电股份有限公司 | Pixel element of electroluminescent device, electroluminescent device and operating method thereof |
| CN100367336C (en) * | 2004-07-13 | 2008-02-06 | 友达光电股份有限公司 | Method for improving current driving type display picture homogeneous degree |
| CN100444229C (en) * | 2004-10-13 | 2008-12-17 | 三星Sdi株式会社 | Organic light emitting display |
| US7714815B2 (en) | 2004-10-13 | 2010-05-11 | Samsung Mobile Display Co., Ltd. | Organic light emitting display utilizing parasitic capacitors for storing data signals |
| CN100353402C (en) * | 2005-05-09 | 2007-12-05 | 友达光电股份有限公司 | Display unit |
| CN100451795C (en) * | 2006-11-13 | 2009-01-14 | 友达光电股份有限公司 | Pixel structure |
| CN101765873B (en) * | 2007-10-18 | 2012-07-25 | 夏普株式会社 | Current-driven display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1261918C (en) | 2006-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11837162B2 (en) | Pixel circuit and driving method thereof, display panel | |
| US20240119897A1 (en) | Pixel Circuit and Driving Method Therefor and Display Panel | |
| CN104933993B (en) | Pixel-driving circuit and its driving method, display device | |
| US10978002B2 (en) | Pixel circuit and driving method thereof, and display panel | |
| US20210327347A1 (en) | Pixel circuit and driving method thereof, and display panel | |
| TWI220046B (en) | Driving circuit of display | |
| CN103218970B (en) | Active matrix organic light emitting diode (AMOLED) pixel unit, driving method and display device | |
| CN113950715B (en) | Pixel circuit, driving method thereof and display device | |
| TW558693B (en) | Driving circuit design for display device | |
| CN117765880A (en) | Pixel circuit, driving method, electroluminescent display panel and display device | |
| US7151513B2 (en) | Method of driving display device | |
| TW571281B (en) | Driving circuit and method for a display device and display device therewith | |
| US7006062B2 (en) | Driving circuit of display | |
| CN1870113A (en) | Structure of display picture element circuit and its driving method | |
| CN210896558U (en) | Display circuit and display device | |
| CN1261918C (en) | Driving circuit for display device | |
| TW582009B (en) | Driving circuit of display device | |
| CN115394254A (en) | Pixel circuit, driving method, display panel and display device | |
| CN1462025A (en) | Designing method of display driving circuit | |
| US11847963B2 (en) | Driving circuit and display apparatus | |
| CN1295667C (en) | Driving circuit of displaying device, method and displaying device therewith | |
| CN1320515C (en) | Organic luminous display | |
| CN1241163C (en) | Display driving process | |
| CN1246819C (en) | Driving circuit of displaying device | |
| CN1215452C (en) | Driving circuit of display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060628 |
|
| CX01 | Expiry of patent term |