TWI791242B

TWI791242B - Led display panel and driving method thereof

Info

Publication number: TWI791242B
Application number: TW110125771A
Authority: TW
Inventors: 奚鵬博; 高振凱
Original assignee: 友達光電股份有限公司
Priority date: 2021-01-27
Filing date: 2021-07-14
Publication date: 2023-02-01
Also published as: TW202230312A

Abstract

A method for driving a LED display panel includes: equally dividing the LED display panel along a scanning direction of the LED display panel to form a plurality of driving units, wherein each driving unit includes a plurality of columns of pulse width modulation pixel circuits; and sequentially enabling each driving unit to form a scan and emission interval of each driving unit; wherein, in the scan and emission interval of each driving unit, the columns of pulse width modulation pixel circuits in each driving unit are first sequentially selected to write with data having the same modulation, and then simultaneously execute a pulse width modulation emission. Thereby, a risk of high driving current can be reduced when the display panel is driven by pulse width modulation, and a design complexity of the driving circuit can be simplified.

Description

發光二極體顯示面板及其驅動方法Light-emitting diode display panel and driving method thereof

本發明是有關一種顯示面板及其驅動方法，尤其是一種透過脈寬調變驅動的發光二極體顯示面板及其驅動方法。 The present invention relates to a display panel and its driving method, in particular to a light-emitting diode display panel driven by pulse width modulation and its driving method.

隨著發光二極體(LED)顯示面板的製造技術的成熟，驅動顯示面板的技術也多樣性，其中脈寬調變的方式驅動顯示面板可包含有以下優點：面板灰階效率高、面板灰階色偏控制優、顏色操控優、面板亮度可調範圍廣等。但是仍然存在著驅動電流累積、驅動電路的設計複雜度等風險問題。 With the maturity of the manufacturing technology of light-emitting diode (LED) display panels, the technologies for driving the display panels are also diversified. Among them, driving the display panel by pulse width modulation can include the following advantages: high panel gray scale efficiency, panel gray Excellent color shift control, excellent color control, wide adjustable range of panel brightness, etc. However, there are still risk problems such as driving current accumulation and design complexity of the driving circuit.

本發明提供的發光二極體顯示面板及其驅動方法，可於脈寬調變的方式驅動發光二極體顯示面板時降低大驅動電流的風險，以及簡化驅動電路的設計複雜度。 The light-emitting diode display panel and its driving method provided by the present invention can reduce the risk of large driving current and simplify the design complexity of the driving circuit when driving the light-emitting diode display panel in a pulse width modulation manner.

本發明所提供的發光二極體顯示面板包括多個驅動單元，其沿著上述發光二極體顯示面板的掃描方向等分而成，其中每一驅動單元包括多列脈寬調變像素電路；並且，每一驅動單元被依序地致能以形成每一驅動單元的掃描發光區間；其中，在每一驅動單元的掃描發光區間中，上述驅動單元的多列脈寬調變像素電路首先被依序地選擇以寫入一同調性資料，以及接著同時地進行脈寬調變發光。 The light-emitting diode display panel provided by the present invention includes a plurality of drive units, which are equally divided along the scanning direction of the above-mentioned light-emitting diode display panel, wherein each drive unit includes multiple columns of pulse width modulation pixel circuits; Moreover, each driving unit is sequentially enabled to form a scanning light-emitting interval of each driving unit; wherein, in the scanning light-emitting interval of each driving unit, the multiple columns of pulse-width-modulated pixel circuits of the above-mentioned driving unit are first activated Sequentially select to write the same tone data, and then perform pulse width modulation to emit light simultaneously.

本發明所提供的發光二極體顯示面板的驅動方法包括：沿著上述發光二極體顯示面板的掃描方向等分上述發光二極體顯示面板以形成多個驅動單元，其中每一驅動單元包括多列脈寬調變像素電路；以及依序地致能上述多個驅動單元以形成每一驅動單元的掃描發光區間；其中，在每一驅動單元的掃描發光區間中，上述多列脈寬調變像素電路首先被依序地選擇以寫入一同調性資料，以及接著同時地進行脈寬調變發光。 The driving method of the light-emitting diode display panel provided by the present invention includes: dividing the above-mentioned light-emitting diode display panel equally along the scanning direction of the above-mentioned light-emitting diode display panel to form a plurality of driving units, wherein each driving unit includes Multi-column pulse width modulation pixel circuit; and sequentially enabling the plurality of driving units to form a scanning light-emitting interval of each driving unit; wherein, in the scanning light-emitting interval of each driving unit, the above-mentioned multi-column pulse width modulation The variable pixel circuits are first sequentially selected to write the same tone data, and then perform pulse width modulation to emit light simultaneously.

在本發明的一實施例中，上述發光二極體顯示面板更包括至少一斜率訊號選擇電路，用以依序地致能每一驅動單元，以在被致能的每一驅動單元的掃描發光區間中，每列脈寬調變像素電路被依序地選擇以寫入上述同調性資料，以及被同時地輸入一多斜率信號，以使每列脈寬調變像素電路同時地進行脈寬調變發光。 In an embodiment of the present invention, the above-mentioned light-emitting diode display panel further includes at least one slope signal selection circuit for sequentially enabling each driving unit to emit light during scanning of each enabled driving unit. In the interval, each column of pulse width modulation pixel circuits is sequentially selected to write the above-mentioned coherence data, and a multi-slope signal is input simultaneously, so that each column of pulse width modulation pixel circuits performs pulse width modulation simultaneously. become glowing.

在本發明的一實施例中，上述斜率訊號選擇電路包括：第一開關；第二開關；第三開關；第四開關；及第五開關；其中，每一開關具有第一端、第二端及決定第一端及第二端是否導通的控制端，第一開關的第一端用以接收上述多斜率訊號，第一開關的第二端、第二開關的第二端、第三開關的第一端、第四開關的第一端及第五開關的第一端電性連接於一第一節點，第二開關的第一端用以接收一第一直流電壓，第三開關的第二端、第四開關的第二端及第五開關的第二端用以接收一第二直流電壓，其中上述第一直流電壓不同於上述第二直流電壓。 In an embodiment of the present invention, the slope signal selection circuit includes: a first switch; a second switch; a third switch; a fourth switch; and a fifth switch; wherein each switch has a first end, a second end And the control terminal that determines whether the first terminal and the second terminal are conducting, the first terminal of the first switch is used to receive the above-mentioned multi-slope signal, the second terminal of the first switch, the second terminal of the second switch, and the third switch The first end, the first end of the fourth switch, and the first end of the fifth switch are electrically connected to a first node, the first end of the second switch is used to receive a first DC voltage, and the second end of the third switch terminal, the second terminal of the fourth switch and the second terminal of the fifth switch are used to receive a second DC voltage, wherein the first DC voltage is different from the second DC voltage.

在本發明的一實施例中，在上述多列脈寬調變像素電路被依序地選擇以寫入上述同調性資料時，上述斜率訊號選擇電路的第一開關、第二開關、第三開關及第五開關被關閉、以及第四開關的控制端接收每列脈寬調變像素電路的一致能信號而使第四開關被開啟，以便由第四開關的第二端接收上述第二直流電壓並透過第一節點輸入第二直流電壓至每列脈寬調變像素電路。 In an embodiment of the present invention, when the plurality of columns of PWM pixel circuits are sequentially selected to write the coherence data, the first switch, the second switch, and the third switch of the slope signal selection circuit and the fifth switch is turned off, and the control end of the fourth switch receives an enabling signal of each column of pulse width modulation pixel circuits to enable the fourth switch to be turned on, so that the second end of the fourth switch receives the second DC voltage And through the first node, the second DC voltage is input to each row of PWM pixel circuits.

在本發明的一實施例中，在上述多列脈寬調變像素電路被同時地輸入上述多斜率信號時，上述斜率訊號選擇電路的第二開關、第三開關、第四開關及第五開關被關閉、以及第一開關的控制端接收每一驅動單元的一發光信號而使第一開關被開啟，以便由第一開關的第一端接收上述多斜率訊號並透過第一節點輸入上述多斜率信號至多列脈寬調變像素電路。 In an embodiment of the present invention, when the multi-column PWM pixel circuits are simultaneously input with the multi-slope signals, the second switch, the third switch, the fourth switch and the fifth switch of the slope signal selection circuit is closed, and the control end of the first switch receives a light-emitting signal from each drive unit to enable the first switch to be turned on, so that the first end of the first switch receives the above-mentioned multi-slope signal and inputs the above-mentioned multi-slope signal through the first node Signals to multi-column PWM pixel circuits.

在本發明的一實施例中，上述多列脈寬調變像素電路中的每個脈寬調變像素電路包括發光二極體及連接以驅動發光二極體的驅動電路。 In an embodiment of the present invention, each pulse-width-modulated pixel circuit in the plurality of columns of pulse-width-modulated pixel circuits includes a light-emitting diode and a driving circuit connected to drive the light-emitting diode.

本發明因採用斜率訊號選擇電路而將發光二極體顯示面板等分成多個驅動單元，可於脈寬調變的方式驅動發光二極體顯示面板時降低大驅動電流的風險、降低掃描組數、簡化驅動電路的設計複雜度，以提升像素密度(PPI)。 The present invention divides the light-emitting diode display panel into multiple driving units due to the use of the slope signal selection circuit, which can reduce the risk of large driving current and reduce the number of scanning groups when driving the light-emitting diode display panel in a pulse width modulation manner , Simplify the design complexity of the driving circuit to increase the pixel density (PPI).

為讓本發明之上述和其他目的、特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式，作詳細說明如下。 In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

1:發光二極體顯示面板 1: LED display panel

2:時序控制電路 2: Timing control circuit

3:掃描驅動電路 3: Scanning drive circuit

4:資料驅動電路 4: Data drive circuit

5:脈寬調變像素電路 5: PWM pixel circuit

6:斜率訊號選擇電路 6: Slope signal selection circuit

51:發光二極體 51: light emitting diode

52:驅動電路 52: Drive circuit

61:第一開關 61: First switch

62:第二開關 62: Second switch

63:第三開關 63: The third switch

64:第四開關 64: The fourth switch

65:第五開關 65: fifth switch

A1[PZi]:第一節點 A1[PZi]: the first node

Unit 1~Unit 16:驅動單元 Unit 1~Unit 16: drive unit

PZ 1~PZ 16:掃描發光區間 PZ 1~PZ 16: scan luminescence interval

SC 1~SC 16:掃描區 SC 1~SC 16: scanning area

EM 1~EM 16:發光區 EM 1~EM 16: Luminous area

DATA_PWM:同調性資料 DATA_PWM: coherent data

G1(PZi_n):致能信號 G1(PZi_n): enable signal

G1(PZi_n-1):致能訊號 G1(PZi_n-1): enable signal

G2(PZi):致能訊號 G2(PZi): enable signal

DC_L:第一直流電壓 DC_L: the first DC voltage

DC_H:第二直流電壓 DC_H: Second DC voltage

EM[PZ1]:發光信號 EM[PZ1]: Luminous signal

EM[PZi]:發光信號 EM[PZi]: Luminous signal

EM[PZ(i+1)]:發光信號 EM[PZ(i+1)]: Luminous signal

EM[PZ(i-1)]:發光信號 EM[PZ(i-1)]: luminescent signal

MSS:多斜率信號 MSS: Multiple Slope Signal

PWM current:脈寬調變電流 PWM current: pulse width modulation current

S1,S3:步驟 S1, S3: steps

圖1為本發明一實施例所提供的發光二極體顯示面板的示意圖；圖2為本發明一實施例所提供的沿著發光二極體顯示面板的掃描方向等分成驅動單元及其掃描驅動發光區間的示意圖；圖3為本發明一實施例所提供的發光二極體顯示面板的驅動方法的流程圖；圖4為本發明一實施例所提供的斜率訊號選擇電路的電路圖；圖5為圖4所提供的斜率訊號選擇電路的掃描及發光的時序圖；圖6為本發明一實施例所提供的斜率訊號選擇電路與脈寬調變像素電路的示意圖；圖7為圖6的二次發光區間的示意圖；圖8為本發明另一實施例所提供的斜率訊號選擇電路與脈寬調變像素電路的示意圖；圖9為圖8的二次發光區間的示意圖；以及圖10為圖6的時序模擬驗證圖。 Fig. 1 is a schematic diagram of a light-emitting diode display panel provided by an embodiment of the present invention; Fig. 2 is a driving unit and its scanning drive provided by an embodiment of the present invention, which are equally divided along the scanning direction of the light-emitting diode display panel A schematic diagram of the light-emitting interval; FIG. 3 is a flowchart of a driving method for a light-emitting diode display panel provided by an embodiment of the present invention; FIG. 4 is a circuit diagram of a slope signal selection circuit provided by an embodiment of the present invention; FIG. 5 is The timing diagram of scanning and lighting of the slope signal selection circuit provided in FIG. 4; FIG. 6 is a schematic diagram of the slope signal selection circuit and the pulse width modulation pixel circuit provided by an embodiment of the present invention; FIG. A schematic diagram of the light-emitting interval; FIG. 8 is a schematic diagram of a slope signal selection circuit and a pulse width modulation pixel circuit provided by another embodiment of the present invention; FIG. 9 is a schematic diagram of the secondary light-emitting interval of FIG. 8; and FIG. 10 is a schematic diagram of FIG. 6 Timing simulation verification diagram.

在下文中，將藉由圖式說明本發明之各種實施例來詳細描述本發明。然而，本發明概念可能以許多不同形式來體現，且不應解釋為限於本文中所闡述之例示性實施例。此外，在圖式中相同參考數字可用以表示類似的元件。 Hereinafter, the present invention will be described in detail by illustrating various embodiments of the invention by way of drawings. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Furthermore, the same reference numbers may be used to denote similar elements in the drawings.

請參照圖1所示，本發明所提供的發光二極體(LED)顯示面板1包含有時序控制電路2、掃描驅動電路3、資料驅動電路4、及M列的脈寬調變像素電路5，其中時序控制器連接掃描驅動電路3及資料驅動電路4，以及M列的脈寬調變像素電路5連接掃描驅動電路3 及資料驅動電路4。時序控制電路2用以控制掃描驅動電路3及資料驅動電路4，掃描驅動電路3用以輸出掃描脈衝來驅動發光二極體顯示面板1中的掃描線以載入顯示資料至相應的脈寬調變像素電路5，資料驅動電路4用以依據顯示資料的資料電壓對相應的脈寬調變像素電路5中的儲存電容充電，以及發光二極體顯示面板1中的M列中的每個脈寬調變像素電路5用以依據相應的資料電壓進行發光。另外，發光二極體顯示面板1包含有M列脈寬調變像素電路5，例如對於解析度為1920*960的發光二極體顯示面板1時，M=960。為了方便以下說明，圖1的發光二極體顯示面板1包含有960列的脈寬調變像素電路的例子來進行說明，但其數量並非用以限制本發明。 Please refer to Fig. 1, the light-emitting diode (LED) display panel 1 provided by the present invention includes a timing control circuit 2, a scan drive circuit 3, a data drive circuit 4, and M-column pulse width modulation pixel circuits 5 , wherein the timing controller is connected to the scanning driving circuit 3 and the data driving circuit 4, and the pulse width modulation pixel circuit 5 of M columns is connected to the scanning driving circuit 3 And data drive circuit 4. The timing control circuit 2 is used to control the scanning driving circuit 3 and the data driving circuit 4, and the scanning driving circuit 3 is used to output scanning pulses to drive the scanning lines in the light-emitting diode display panel 1 to load the display data into the corresponding PWM The variable pixel circuit 5, the data driving circuit 4 is used to charge the storage capacitor in the corresponding pulse width modulation pixel circuit 5 according to the data voltage of the display data, and each pulse in the M columns in the light emitting diode display panel 1 The wide modulation pixel circuit 5 is used for emitting light according to the corresponding data voltage. In addition, the LED display panel 1 includes M columns of PWM pixel circuits 5 , for example, for the LED display panel 1 with a resolution of 1920*960, M=960. For the convenience of the following description, the light-emitting diode display panel 1 in FIG. 1 includes an example of 960 columns of PWM pixel circuits for illustration, but the number is not intended to limit the present invention.

請參照圖2及圖3所示，發光二極體顯示面板1包含沿著發光二極體顯示面板1的掃描方向等分而成的多個驅動單元Unit 1~Unit x，其中每一驅動單元Unit 1~Unit x包括多列的脈寬調變像素電路5(步驟S1)，以使每一驅動單元Unit 1~Unit x的電流量上限值須小於10A。在本實施例中，發光二極體顯示面板1等分成16個驅動單元Unit 1~Unit 16，但其數量並非用以限制本發明。本技術領域中具有通常知識者應可依據實際需求或應用來進行相關設計，例如發光二極體的外部量子效率(EQE)為35μA，顯示面板的總電流量為1920*960*35μA=64A，發光二極體顯示面板1等分成16個驅動單元Unit 1~Unit 16，使得每一驅動單元Unit 1~Unit 16的電流量為64A/16=4A小於電流量上限值。藉此，可避免發光二極體顯示面板1的大驅動電流的累積。並且，每一驅動單元Unit 1~Unit 16包含60(=960/16)列的脈寬調變像素電路5，每一驅動單元Unit 1~Unit 16被依序地致能以形成每一驅動單元的掃描發光區間 PZ1~PZ16，而每一掃描發光區間PZ1~PZ16分別包含掃描區SC 1~SC 16及發光區EM 1~EM 16，而首先每列脈寬調變像素電路5在每一掃描區SC 1~SC 16中被依序地選擇以寫入一同調性資料，接著每列脈寬調變像素電路5在每一發光區EM 1~EM 16中同時地進行脈寬調變發光(步驟S3)，其中同調性資料為具有相同調變的顯示資料。另外，可以注意的是，驅動單元Unit 1在掃描發光區間PZ9具有未寫入資料及脈寬調變發光的操作，而其他驅動單元Unit 2~Unit 16也具有相同的操作，此部分的操作將於稍後內容說明之。 Please refer to FIG. 2 and FIG. 3, the light emitting diode display panel 1 includes a plurality of driving units Unit 1 to Unit x equally divided along the scanning direction of the light emitting diode display panel 1, wherein each driving unit Unit 1 to Unit x include multiple columns of PWM pixel circuits 5 (step S1 ), so that the upper limit of the current of each driving unit Unit 1 to Unit x must be less than 10A. In this embodiment, the LED display panel 1 is equally divided into 16 driving units Unit 1 -Unit 16 , but the number is not intended to limit the present invention. Those with ordinary knowledge in this technical field should be able to carry out related designs according to actual needs or applications. For example, the external quantum efficiency (EQE) of the light-emitting diode is 35μA, and the total current of the display panel is 1920*960*35μA=64A. The light emitting diode display panel 1 is equally divided into 16 driving units Unit 1 to Unit 16, so that the current of each driving unit Unit 1 to Unit 16 is 64A/16=4A less than the upper limit of the current. Thereby, the accumulation of large driving current of the LED display panel 1 can be avoided. Moreover, each driving unit Unit 1 to Unit 16 includes 60 (=960/16) columns of PWM pixel circuits 5, and each driving unit Unit 1 to Unit 16 is sequentially enabled to form each driving unit The scanning luminescence interval of PZ1~PZ16, and each scanning light-emitting interval PZ1~PZ16 includes scanning areas SC 1-SC 16 and light-emitting areas EM 1-EM 16 respectively, and firstly, each column of pulse width modulation pixel circuits 5 in each scanning area SC 1- The SC 16 is sequentially selected to write the same tone data, and then each column of pulse-width-modulated pixel circuits 5 simultaneously performs pulse-width-modulated light emission in each light-emitting area EM1-EM16 (step S3), Wherein, the coherence data are display data having the same modulation. In addition, it can be noted that the drive unit Unit 1 has the operation of unwritten data and pulse width modulation light emission in the scanning light-emitting interval PZ9, and other drive units Unit 2~Unit 16 also have the same operation, and the operation of this part will be It will be explained later.

請同時參照圖4及圖5所示，發光二極體顯示面板1還包括至少一斜率訊號選擇電路6，連接M列的脈寬調變像素電路5，用以依序地致能每一驅動單元Unit 1~Unit 16，以在被致能的每一驅動單元Unit 1~Unit 16的每一掃描發光區間PZ1~PZ16中，每列的脈寬調變像素電路5被依序地選擇以寫入同調性資料，以及被同時地輸入一多斜率信號MSS(multi slope signal)，並使這些脈寬調變像素電路5同時地進行脈寬調變發光。值得注意的是，本發明的斜率訊號選擇電路6是可以將發光二極體顯示面板1區分為多個驅動單元Unit 1~Unit 16，並且將每一驅動單元的掃描發光區間PZ1~PZ16區分成掃描區SC 1~SC 16及發光區EM 1~EM 16，可於脈寬調變的方式驅動發光二極體顯示面板時降低大驅動電流的風險、降低掃描組數、簡化驅動電路的設計複雜度，以提升像素密度。如圖5所示，斜率訊號選擇電路6致能驅動單元Unit 1，以使驅動單元Unit 1的60列的脈寬調變像素電路5被選擇，並在驅動單元Unit 1的掃描發光區間PZ1的掃描區SC 1中，每列的脈寬調變像素電路5被依序地選擇以寫入同調性資料DATA_PWM，以及並在驅動單元Unit 1 的掃描發光區間PZ1的發光區EM 1中，每列的脈寬調變像素電路5同時地輸入多斜率信號並進行脈寬調變發光。另外，斜率訊號選擇電路6致能其他驅動單元Unit 2~Unit 16的流程相同於斜率訊號選擇電路6致能驅動單元Unit 1，故不再多贅述。可以注意的是，驅動單元Unit 9在掃描發光區間PZ1具有未寫入資料及脈寬調變發光的操作，此部分的操作將於稍後內容說明之。 Please refer to FIG. 4 and FIG. 5 at the same time, the light emitting diode display panel 1 also includes at least one slope signal selection circuit 6, which is connected to the pulse width modulation pixel circuits 5 of M columns, and is used to sequentially enable each drive Units Unit 1~Unit 16, so that in each scanning light-emitting interval PZ1~PZ16 of each enabled driving unit Unit 1~Unit 16, the pulse width modulation pixel circuits 5 of each column are sequentially selected to write The coherence data is input, and a multi-slope signal MSS (multi slope signal) is simultaneously input, so that these pulse width modulation pixel circuits 5 simultaneously perform pulse width modulation to emit light. It is worth noting that the slope signal selection circuit 6 of the present invention can divide the LED display panel 1 into a plurality of driving units Unit 1~Unit 16, and divide the scanning light-emitting interval PZ1~PZ16 of each driving unit into Scanning areas SC 1~SC 16 and light emitting areas EM 1~EM 16 can reduce the risk of large driving current, reduce the number of scanning groups, and simplify the design complexity of the driving circuit when driving the light-emitting diode display panel in a pulse width modulation manner to increase pixel density. As shown in FIG. 5 , the slope signal selection circuit 6 enables the driving unit Unit 1, so that the 60 columns of pulse width modulation pixel circuits 5 of the driving unit Unit 1 are selected, and the scanning light emitting interval PZ1 of the driving unit Unit 1 In the scanning area SC 1, the pulse width modulation pixel circuits 5 of each column are sequentially selected to write the coherence data DATA_PWM, and in the drive unit Unit 1 In the light emitting zone EM1 of the scanning light emitting interval PZ1, the pulse width modulation pixel circuits 5 of each column simultaneously input multi-slope signals and perform pulse width modulation to emit light. In addition, the process of enabling the other drive units Unit 2 to Unit 16 by the slope signal selection circuit 6 is the same as that of the slope signal selection circuit 6 for enabling the drive unit Unit 1 , so no more details are given here. It can be noted that the driving unit Unit 9 has unwritten data and pulse-width modulated light-emitting operations in the scanning light-emitting interval PZ1, and the operation of this part will be described later.

斜率訊號選擇電路6包括第一開關61、第二開關62、第三開關63、第四開關64、及第五開關65。其中，每一開關61~65具有第一端、第二端及決定第一端及第二端是否導通的控制端，第一開關61的第一端用以接收多斜率訊號MSS，第一開關61的第二端、第二開關62的第二端、第三開關63的第一端、第四開關64的第一端及第五開關65的第一端電性連接於第一節點A1，第二開關62的第一端用以接收一第一直流電壓(DC_L)，第三開關63的第二端、第四開關64的第二端及第五開關65的第二端用以接收一第二直流電壓(DC_H)，其中第一直流電壓(DC_L)相異於第二直流電壓(DC_H)。 The slope signal selection circuit 6 includes a first switch 61 , a second switch 62 , a third switch 63 , a fourth switch 64 , and a fifth switch 65 . Wherein, each switch 61-65 has a first terminal, a second terminal and a control terminal for determining whether the first terminal and the second terminal are turned on. The first terminal of the first switch 61 is used to receive the multi-slope signal MSS. The second terminal of 61, the second terminal of the second switch 62, the first terminal of the third switch 63, the first terminal of the fourth switch 64 and the first terminal of the fifth switch 65 are electrically connected to the first node A1, The first end of the second switch 62 is used to receive a first DC voltage (DC_L), the second end of the third switch 63, the second end of the fourth switch 64 and the second end of the fifth switch 65 are used to receive a first DC voltage (DC_L). The second DC voltage (DC_H), wherein the first DC voltage (DC_L) is different from the second DC voltage (DC_H).

詳細的說，在每列的脈寬調變像素電路5被依序地選擇以寫入同調性資料時，斜率訊號選擇電路6的第一開關61、第二開關62、第三開關63及第五開關65被關閉、以及第四開關64的控制端接收每列脈寬調變像素電路的一致能信號G1(PZi_n)而使第四開關64被開啟，其中i=1~16，n=1~60，以便由第四開關64的第二端接收第二直流電壓(DC_H)並透過第一節點A1輸入第二直流電壓(DC_H)至每列脈寬調變像素電路5。而在60列的脈寬調變像素電路5被同時地輸入多斜率信號MSS時，斜率訊號選擇電路6的第二開關62、第三開關63、第四開關64及第五開關65被關閉、以及第一開關61的控制端接收驅動單元Unit 1的一發光信號EM[PZ1]而使第一開關61被開啟，以便由第一開關61的第一端接收多斜率訊號MSS並透過第一節點A1輸入多斜率信號MSS至每列脈寬調變像素電路5。 In detail, when the pulse width modulation pixel circuits 5 of each column are sequentially selected to write coherent data, the first switch 61, the second switch 62, the third switch 63 and the first switch 63 of the slope signal selection circuit 6 The fifth switch 65 is turned off, and the control terminal of the fourth switch 64 receives an enabling signal G1 (PZi_n) of each column of PWM pixel circuits to turn on the fourth switch 64, wherein i=1~16, n=1 ~60, so that the second terminal of the fourth switch 64 receives the second DC voltage (DC_H) and inputs the second DC voltage (DC_H) to each column of PWM pixel circuits 5 through the first node A1. When the pulse width modulation pixel circuits 5 of 60 rows are simultaneously input with the multi-slope signal MSS, the second switch 62, the third switch 63, the fourth switch 64 and the fifth switch 65 of the slope signal selection circuit 6 are turned off, and the first switch 61 of the The control end receives a light emitting signal EM[PZ1] from the drive unit Unit 1 to turn on the first switch 61, so that the first end of the first switch 61 receives the multi-slope signal MSS and inputs the multi-slope signal MSS through the first node A1 To each column pulse width modulated pixel circuit 5 .

請參照圖6所示，斜率訊號選擇電路6連接的脈寬調變像素電路5僅為示例，其中每列脈寬調變像素電路5中的每個各別包含發光二極體51及連接以驅動發光二極體51的驅動電路52，然而其電路結構及元件數目與類型並非用以限制本發明，本技術領域中具有通常知識者應可依據實際需求或應用來選用或設計不同的脈寬調變像素電路。在本實施例中，斜率訊號選擇電路6中的第一開關61的控制端接收驅動單元Unit 1~Unit 16的發光信號EM[PZi]，第二開關62的控制端接收驅動單元Unit 1~Unit 16的發光信號EM[PZ(i+1)]，第三開關63的控制端接收驅動單元Unit 1~Unit 16的發光信號EM[PZ(i-1)]，第四開關64的控制端接收其連接的當列脈寬調變像素電路5的致能訊號G1(PZi_n)，第五開關65的控制端接收前一列脈寬調變像素電路5的致能訊號G1(PZi_n-1)，其中i=1~16，n=1~60。 Please refer to FIG. 6 , the pulse width modulation pixel circuit 5 connected to the slope signal selection circuit 6 is only an example, wherein each of the pulse width modulation pixel circuits 5 in each column includes a light emitting diode 51 and is connected to The drive circuit 52 for driving the light-emitting diode 51, however, its circuit structure and the number and types of components are not intended to limit the present invention, and those skilled in the art can select or design different pulse widths according to actual needs or applications Modulate the pixel circuit. In this embodiment, the control terminal of the first switch 61 in the slope signal selection circuit 6 receives the light emitting signal EM[PZi] of the drive units Unit 1 to Unit 16, and the control terminal of the second switch 62 receives the light signals from the drive units Unit 1 to Unit 16. 16 light emitting signal EM[PZ(i+1)], the control terminal of the third switch 63 receives the light emitting signal EM[PZ(i-1)] of the drive unit Unit 1~Unit 16, and the control terminal of the fourth switch 64 receives It is connected to the enabling signal G1 (PZi_n) of the current column pulse width modulation pixel circuit 5, and the control terminal of the fifth switch 65 receives the enabling signal G1 (PZi_n-1) of the previous column pulse width modulation pixel circuit 5, wherein i=1~16, n=1~60.

請參照圖7所示，當發光二極體顯示面板1的發光亮度不足時，發光二極體顯示面板1必須要再次進行發光。然而，本案的發光二極體顯示面板1不需要再次載入同調性資料，而是由斜率訊號選擇電路6利用第三開關63的控制端接收前一驅動單元的發光信號EM[PZ(i-1)]，使第三開關63被開啟以輸入第二直流電壓(DC_H)至每列脈寬調變像素電路5，而讓每列脈寬調變像素電路5再次輸入第二直流電壓(DC_H)以再次進行脈寬調變發光，如圖2中的驅動單元Unit 1在掃描發光區間PZ9的掃描區SC 9中未寫入同調性資料 DATA_PWM而在發光區EM 9中再次進行脈寬調變發光、以及如圖5及7中的驅動單元Unit 9在掃描發光區間PZ1的掃描區SC 1中未寫入同調性資料DATA_PWM而在發光區EM 1中進行脈寬調變發光。 Please refer to FIG. 7 , when the light emitting brightness of the light emitting diode display panel 1 is insufficient, the light emitting diode display panel 1 must emit light again. However, the light-emitting diode display panel 1 of this case does not need to reload the coherence data, but the slope signal selection circuit 6 uses the control terminal of the third switch 63 to receive the light-emitting signal EM[PZ(i− 1)], so that the third switch 63 is turned on to input the second direct current voltage (DC_H) to each column of pulse width modulation pixel circuit 5, and each column of pulse width modulation pixel circuit 5 is allowed to input the second direct current voltage (DC_H) again ) to perform pulse width modulation to emit light again, as shown in Figure 2, the drive unit Unit 1 does not write coherence data in the scanning area SC 9 of the scanning light emitting interval PZ9 DATA_PWM and perform pulse width modulation to emit light again in the light-emitting area EM9, and the drive unit Unit 9 in the scanning light-emitting interval PZ1 does not write the coherence data DATA_PWM in the light-emitting area EM 1 is pulse width modulated to emit light.

請參照圖8所示，圖8中部分與圖6相同腳位以相同之圖號標示，故於此不再多加詳述其細節。其中，如圖8所示，斜率訊號選擇電路6的第二開關62的第一端接收第二直流電壓(DC_H)以及控制端接收驅動單元Unit 1~Unit 16的致能訊號G2(PZi)，第三開關63的第二端、第四開關64的第二端及第五開關65的第二端用以接收第一直流電壓(DC_L)，而第三開關63的控制端接收驅動單元Unit 1~Unit 16的發光信號EM[PZ(i+1)]，其中i=1~16。 Please refer to FIG. 8 . Parts of the pins in FIG. 8 that are the same as those in FIG. 6 are marked with the same figure numbers, so the details will not be described in detail here. Wherein, as shown in FIG. 8 , the first terminal of the second switch 62 of the slope signal selection circuit 6 receives the second DC voltage (DC_H) and the control terminal receives the enable signal G2 (PZi) of the driving units Unit 1 to Unit 16, The second terminal of the third switch 63, the second terminal of the fourth switch 64 and the second terminal of the fifth switch 65 are used to receive the first DC voltage (DC_L), and the control terminal of the third switch 63 receives the drive unit Unit 1 ~Emission signal EM[PZ(i+1)] of Unit 16, where i=1~16.

請參照圖9所示，當發光二極體顯示面板1的發光亮度不足時，發光二極體顯示面板1必須要再次進行發光。然而，本案的發光二極體顯示面板1不需要再次載入顯示資料，而是讓圖8中的PWM(脈寬調變)、PAM(脈幅調變)、及EM(發光信號)採用移位暫存器信號的方式，並新增PWM_G升壓功能以讓載入的資料電壓下降，以由斜率訊號選擇電路6利用第二開關62的控制端接收驅動單元Unit 1~Unit 16的致能訊號G2，使第二開關62被開啟以輸入第二直流電壓(DC_H)至每列脈寬調變像素電路5，而讓每列脈寬調變像素電路5再次輸入第二直流電壓(DC_H)以再次進行脈寬調變發光，如圖中的驅動單元Unit 1在發光區EM 9中再次進行脈寬調變發光、以及如圖中的驅動單元Unit 9在發光區EM 1中進行脈寬調變發光。 Please refer to FIG. 9 , when the light emitting brightness of the light emitting diode display panel 1 is insufficient, the light emitting diode display panel 1 must emit light again. However, the light-emitting diode display panel 1 of this case does not need to reload the display data, but allows the PWM (pulse width modulation), PAM (pulse amplitude modulation), and EM (luminous signal) in FIG. Bit register signal mode, and a PWM_G boost function is added to lower the loaded data voltage, so that the slope signal selection circuit 6 uses the control terminal of the second switch 62 to receive the enabling of the drive units Unit 1~Unit 16 The signal G2 enables the second switch 62 to be turned on to input the second DC voltage (DC_H) to each column of PWM pixel circuits 5, so that each column of PWM pixel circuits 5 can input the second DC voltage (DC_H) again To perform pulse width modulation to emit light again, as shown in the figure, the drive unit Unit 1 performs pulse width modulation in the light emitting area EM9 again, and as shown in the figure, the drive unit Unit 9 performs pulse width modulation in the light emitting area EM1 become glowing.

請參照圖10所示，為圖6的時序模擬驗證圖。當斜率訊號選擇電路6中的第一開關61的控制端分別接收驅動單元Unit 1~Unit 16的發光信號EM[PZi]時，第一開關61被致能而輸入多斜率訊號MSS至每一驅動單元Unit 1~Unit 16的每列脈寬調變像素電路5，使得脈寬調變電流(PWM current)輸出毫安培級，其中i=1~16。藉此模擬，驗證本發明將發光二極體顯示面板等分成多個驅動單元的可行性，以提供解析度/高像素密度的發光二極體顯示面板。 Please refer to FIG. 10 , which is a timing simulation verification diagram of FIG. 6 . When the control terminals of the first switch 61 in the slope signal selection circuit 6 respectively receive the drive units Unit 1~Unit When the light-emitting signal EM[PZi] of 16, the first switch 61 is enabled to input the multi-slope signal MSS to each column of pulse width modulation pixel circuits 5 of each drive unit Unit 1~Unit 16, so that the pulse width modulation current (PWM current) output milliampere level, where i=1~16. Through this simulation, the feasibility of dividing the light emitting diode display panel into multiple driving units in the present invention is verified to provide a resolution/high pixel density light emitting diode display panel.

綜上所述，本發明因將發光二極體顯示面板等分成多個驅動單元以及採用斜率訊號選擇電路，因此可達成於脈寬調變的方式驅動發光二極體顯示面板時降低大驅動電流的風險、簡化驅動電路的設計複雜度、降低掃描組數、簡化驅動電路的設計複雜度，以提升像素密度(PPI)，更可多次脈寬調變發光以增加發光二極體顯示面板的發光亮度。 To sum up, because the present invention divides the light-emitting diode display panel into multiple driving units and adopts the slope signal selection circuit, it can reduce the large driving current when driving the light-emitting diode display panel in the way of pulse width modulation. risk, simplify the design complexity of the driving circuit, reduce the number of scanning groups, simplify the design complexity of the driving circuit to increase the pixel density (PPI), and multiple pulse width modulation to increase the light-emitting diode display panel Luminous brightness.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

S1,S3:步驟 S1, S3: steps

Claims

一種發光二極體顯示面板，包括：多個驅動單元，沿著該發光二極體顯示面板的掃描方向等分而成，每一驅動單元包括多列脈寬調變像素電路；至少一斜向訊號選擇電路，用以依序地致能每一該些驅動單元，以在被致能的每一該些驅動單元的掃描發光區間中，每列脈寬調變像素電路被依序地選擇以寫入該同調性資料，以及被同時地輸入一多斜向信號，以使每列脈寬調變像素電路同時地進行脈寬調變發光；其中，每一該些驅動單元被依序地致能以形成每一該些驅動單元的掃描發光區間；其中，在每一該些驅動單元的掃描發光區間中，該些多列脈寬調變像素電路首先被依序地選擇以寫入一同調性資料，以及接著同時地進行脈寬調變發光；其中該斜向訊號選擇電路包括：第一開關、第二開關、第三開關、第四開關及第五開關，該第一開關、該第二開關、該第三開關、該第四開關及該第五開關中每一開關具有第一端、第二端及決定第一端及第二端是否導通的控制端，該第一開關的第一端用以接收該多斜向訊號，該第一開關的第二端、該第二開關的第二端、該第三開關的第一端、該第四開關的第一端及該第五開關的第一端電性連接於一第一節點，該第二開關的第一端用以接收一第一直流電壓，該第三開關的第二端、該第四開關的第二端及該第五開關的第二端用以接收一第二直流電壓，其中該第一直流電壓不同於該第二直流電壓。 A light-emitting diode display panel, comprising: a plurality of driving units, which are equally divided along the scanning direction of the light-emitting diode display panel, and each driving unit includes multiple columns of pulse width modulation pixel circuits; at least one oblique The signal selection circuit is used to sequentially enable each of the driving units, so that in the scanning light-emitting interval of each of the enabled driving units, each column of pulse width modulation pixel circuits is sequentially selected to The coherence data is written, and a multi-slant signal is simultaneously input, so that each column of pulse width modulation pixel circuits simultaneously performs pulse width modulation to emit light; wherein, each of the driving units is sequentially driven The scanning light emitting interval of each of the driving units can be formed; wherein, in the scanning light emitting interval of each of the driving units, the plurality of columns of pulse width modulation pixel circuits are first sequentially selected to write the same modulation data, and then simultaneously perform pulse width modulation to emit light; wherein the oblique signal selection circuit includes: a first switch, a second switch, a third switch, a fourth switch and a fifth switch, the first switch, the second Each switch in the second switch, the third switch, the fourth switch, and the fifth switch has a first end, a second end, and a control end for determining whether the first end and the second end are conducting, and the first end of the first switch One end is used to receive the multi-slope signal, the second end of the first switch, the second end of the second switch, the first end of the third switch, the first end of the fourth switch and the fifth The first terminal of the switch is electrically connected to a first node, the first terminal of the second switch is used to receive a first DC voltage, the second terminal of the third switch, the second terminal of the fourth switch and the The second terminal of the fifth switch is used for receiving a second DC voltage, wherein the first DC voltage is different from the second DC voltage.

如請求項1所述之發光二極體顯示面板，其中在該些多列脈寬調變像素電路被依序地選擇以寫入該同調性資料時，該斜率訊號選擇電路的該第一開關、該第二開關、該第三開關及該第五開關被關閉、以及該第四開關的控制端接收每列脈寬調變像素電路的一致能信號而使該第四開關被開啟，以便由該第四開關的第二端接收該第二直流電壓並透過該第一節點輸入該第二直流電壓至每列脈寬調變像素電路。 The light-emitting diode display panel as described in Claim 1, wherein when the plurality of columns of PWM pixel circuits are sequentially selected to write the coherence data, the first switch of the slope signal selection circuit , the second switch, the third switch and the fifth switch are turned off, and the control terminal of the fourth switch receives an enable signal of each column of pulse width modulation pixel circuits so that the fourth switch is turned on, so that by The second terminal of the fourth switch receives the second DC voltage and inputs the second DC voltage to each column of PWM pixel circuits through the first node.

如請求項1所述之發光二極體顯示面板，其中在該些多列脈寬調變像素電路被同時地輸入該多斜率信號時，該斜率訊號選擇電路的該第二開關、該第三開關、該第四開關及該第五開關被關閉、以及該第一開關的控制端接收每一該些驅動單元的一發光信號而使該第一開關被開啟，以便由該第一開關的第一端接收該多斜率訊號並透過該第一節點輸入該多斜率信號至該些多列脈寬調變像素電路。 The light-emitting diode display panel as described in Claim 1, wherein when the multi-column pulse width modulation pixel circuits are simultaneously input with the multi-slope signal, the second switch and the third switch of the slope signal selection circuit The switch, the fourth switch and the fifth switch are turned off, and the control end of the first switch receives a light emitting signal from each of the driving units so that the first switch is turned on, so that the first switch of the first switch One end receives the multi-slope signal and inputs the multi-slope signal to the multi-column PWM pixel circuits through the first node.

一種發光二極體顯示面板的驅動方法，該驅動方法包括：沿著該發光二極體顯示面板的掃描方向等分該發光二極體顯示面板以形成多個驅動單元，其中每一驅動單元包括多列脈寬調變像素電路；以及依序地致能每一該些驅動單元以形成每一該些驅動單元的掃描發光區間；其中，在每一該些驅動單元的掃描發光區間中，該些多列脈寬調變像素電路首先被依序地選擇以寫入一同調性資料，以及接著同時地進行脈寬調變發光；其中該發光二極體顯示面板更包括至少一斜向訊號選擇電路，用以依序地致能每一該些驅動單元，以在被致能的每一該些驅動單元的掃描發光區間中，每列脈寬調變像素電路被依序地選擇以寫入該同調性資料，以及被同時地輸入一多斜向信號，以使每列脈寬調變像素電路同時地進行脈寬調變發光；其中該斜向訊號選擇電路包括：第一開關、第二開關、第三開關、第四開關及第五開關，該第一開關、該第二開關、該第三開關、該第四開關及該第五開關中每一開關具有第一端、第二端及決定第一端及第二端是否導通的控制端，該第一開關的第一端用以接收該多斜向訊號，該第一開關的第二端、該第二開關的第二端、該第三開關的第一端、該第四開關的第一端及該第五開關的第一端電性連接於一第一節點，該第二開關的第一端用以接收一第一直流電壓，該第三開關的第二端、該第四開關的第二端及該第五開關的第二端用以接收一第二直流電壓，其中該第一直流電壓不同於該第二直流電壓。 A driving method of a light-emitting diode display panel, the driving method comprising: dividing the light-emitting diode display panel equally along the scanning direction of the light-emitting diode display panel to form a plurality of driving units, wherein each driving unit includes Multiple columns of pulse width modulation pixel circuits; and sequentially enabling each of the driving units to form a scanning light-emitting interval of each of the driving units; wherein, in the scanning light-emitting interval of each of the driving units, the The plurality of columns of PWM pixel circuits are first sequentially selected to write the same tone data, and then perform pulse width modulation to emit light simultaneously; Wherein the light emitting diode display panel further includes at least one oblique signal selection circuit for sequentially enabling each of the driving units, so that in the scanning light-emitting interval of each of the enabled driving units, Each column of pulse width modulation pixel circuits is sequentially selected to write the coherence data, and simultaneously input a multi-slope signal, so that each column of pulse width modulation pixel circuits simultaneously performs pulse width modulation to emit light ; Wherein the inclined signal selection circuit includes: a first switch, a second switch, a third switch, a fourth switch and a fifth switch, the first switch, the second switch, the third switch, the fourth switch and Each switch in the fifth switch has a first end, a second end, and a control end for determining whether the first end and the second end are turned on. The first end of the first switch is used to receive the multi-slant signal, and the first end is used to receive the multi-slope signal. The second end of a switch, the second end of the second switch, the first end of the third switch, the first end of the fourth switch, and the first end of the fifth switch are electrically connected to a first node , the first end of the second switch is used to receive a first DC voltage, the second end of the third switch, the second end of the fourth switch and the second end of the fifth switch are used to receive a second a DC voltage, wherein the first DC voltage is different from the second DC voltage.

如請求項4所述之驅動方法，其中在該些多列脈寬調變像素電路被依序地選擇以寫入該同調性資料時，該斜率訊號選擇電路的該第一開關、該第二開關、該第三開關及該第五開關被關閉、以及該第四開關的控制端接收每列脈寬調變像素電路的一致能信號而使該第四開關被開啟，以便由該第四開關的第二端接收該第二直流電壓並透過該第一節點輸入該第二直流電壓至每列脈寬調變像素電路。 The driving method as described in claim 4, wherein when the plurality of rows of pulse-width-modulated pixel circuits are sequentially selected to write the coherence data, the first switch and the second switch of the slope signal selection circuit The switch, the third switch and the fifth switch are turned off, and the control terminal of the fourth switch receives an enable signal of each column of pulse width modulation pixel circuits so that the fourth switch is turned on, so that the fourth switch The second terminal of the second terminal receives the second direct current voltage and inputs the second direct current voltage to each column of pulse width modulation pixel circuits through the first node.

如請求項4所述之驅動方法，其中在該些多列脈寬調變像素電路被同時地輸入該多斜率信號時，該斜率訊號選擇電路的該第二開關、該第三開關、該第四開關及該第五開關被關閉、以及該第一開關的控制端接收每一該些驅動單元的一發光信號而使該第一開關被開啟，以便由該第一開關的第一端接收該多斜率訊號並透過該第一節點輸入該多斜率信號至該些多列脈寬調變像素電路。 The driving method as described in Claim 4, wherein when the multi-column pulse width modulation pixel circuits are simultaneously input with the multi-slope signal, the second switch and the third switch of the slope signal selection circuit off, the fourth switch and the fifth switch are turned off, and the control end of the first switch receives a light-emitting signal from each of the driving units to turn on the first switch, so that the first switch of the first switch One end receives the multi-slope signal and inputs the multi-slope signal to the multi-column PWM pixel circuits through the first node.

一種發光二極體顯示面板，包括：多個驅動單元，沿著該發光二極體顯示面板的掃描方向等分而成，每一驅動單元包括多列脈寬調變像素電路；以及至少一斜率訊號選擇電路，用以依序地致能每一該些驅動單元，以在被致能的每一該些驅動單元的掃描發光區間中，每列脈寬調變像素電路被依序地選擇以寫入該同調性資料，以及被同時地輸入一多斜率信號，以使每列脈寬調變像素電路同時地進行脈寬調變發光；其中，每一該些驅動單元被依序地致能以形成每一該些驅動單元的掃描發光區間；其中，在每一該些驅動單元的掃描發光區間中，該些多列脈寬調變像素電路首先被依序地選擇以寫入一同調性資料，以及接著同時地進行脈寬調變發光；其中該些多列脈寬調變像素電路中的每個脈寬調變像素電路包括一發光二極體及連接以驅動該發光二極體的一驅動電路；其中該斜向訊號選擇電路包括：第一開關、第二開關、第三開關、第四開關及第五開關，該第一開關、該第二開關、該第三開關、該第四開關及該第五開關中每一開關具有第一端、第二端及決定第一端及第二端是否導通的控制端，該第一開關的第一端用以接收該多斜向訊號，該第一開關的第二端、該第二開關的第二端、該第三開關的第一端、該第四開關的第一端及該第五開關的第一端電性連接於一第一節點，該第二開關的第一端用以接收一第一直流電壓，該第三開關的第二端、該第四開關的第二端及該第五開關的第二端用以接收一第二直流電壓，其中該第一直流電壓不同於該第二直流電壓。 A light-emitting diode display panel, comprising: a plurality of driving units, equally divided along the scanning direction of the light-emitting diode display panel, each driving unit includes multiple columns of pulse width modulation pixel circuits; and at least one slope The signal selection circuit is used to sequentially enable each of the driving units, so that in the scanning light-emitting interval of each of the enabled driving units, each column of pulse width modulation pixel circuits is sequentially selected to The coherence data is written, and a multi-slope signal is simultaneously input, so that each column of pulse width modulation pixel circuits simultaneously performs pulse width modulation to emit light; wherein, each of the driving units is sequentially enabled to form a scanning light-emitting interval of each of the driving units; wherein, in the scanning light-emitting interval of each of the driving units, the plurality of columns of pulse-width-modulated pixel circuits are first sequentially selected to write in the same tone data, and then perform pulse width modulation to emit light simultaneously; wherein each pulse width modulation pixel circuit in the plurality of columns of pulse width modulation pixel circuits includes a light emitting diode and is connected to drive the light emitting diode A driving circuit; wherein the inclined signal selection circuit includes: a first switch, a second switch, a third switch, a fourth switch and a fifth switch, the first switch, the second switch, the third switch, the first Each of the four switches and the fifth switch has a first end, a second end, and a control end for determining whether the first end and the second end are turned on, and the first end of the first switch is used to receive the multi-slope signal , the first The second end of the switch, the second end of the second switch, the first end of the third switch, the first end of the fourth switch, and the first end of the fifth switch are electrically connected to a first node, The first terminal of the second switch is used to receive a first DC voltage, the second terminal of the third switch, the second terminal of the fourth switch and the second terminal of the fifth switch are used to receive a second DC voltage voltage, wherein the first DC voltage is different from the second DC voltage.

如請求項7所述之發光二極體顯示面板，其中在該些多列脈寬調變像素電路被依序地選擇以寫入該同調性資料時，該斜率訊號選擇電路的該第一開關、該第二開關、該第三開關及該第五開關被關閉、以及該第四開關的控制端接收每列脈寬調變像素電路的一致能信號而使該第四開關被開啟，以便由該第四開關的第二端接收該第二直流電壓並透過該第一節點輸入該第二直流電壓至每列脈寬調變像素電路。 The light-emitting diode display panel as described in claim 7, wherein when the plurality of columns of pulse-width-modulated pixel circuits are sequentially selected to write the coherence data, the first switch of the slope signal selection circuit , the second switch, the third switch and the fifth switch are turned off, and the control terminal of the fourth switch receives an enable signal of each column of pulse width modulation pixel circuits so that the fourth switch is turned on, so that by The second terminal of the fourth switch receives the second DC voltage and inputs the second DC voltage to each column of PWM pixel circuits through the first node.

如請求項7所述之發光二極體顯示面板，其中在該些多列脈寬調變像素電路被同時地輸入該多斜率信號時，該斜率訊號選擇電路的該第二開關、該第三開關、該第四開關及該第五開關被關閉、以及該第一開關的控制端接收每一該些驅動單元的一發光信號而使該第一開關被開啟，以便由該第一開關的第一端接收該多斜率訊號並透過該第一節點輸入該多斜率信號至該些多列脈寬調變像素電路。 The light emitting diode display panel as described in claim 7, wherein when the multi-column pulse width modulation pixel circuits are simultaneously input with the multi-slope signal, the second switch and the third switch of the slope signal selection circuit The switch, the fourth switch and the fifth switch are turned off, and the control end of the first switch receives a light emitting signal from each of the driving units so that the first switch is turned on, so that the first switch of the first switch One end receives the multi-slope signal and inputs the multi-slope signal to the multi-column PWM pixel circuits through the first node.

一種發光二極體顯示面板的驅動方法，該驅動方法包括：沿著該發光二極體顯示面板的掃描方向等分該發光二極體顯示面板以形成多個驅動單元，其中每一驅動單元包括多列脈寬調變像素電路；以及依序地致能每一該些驅動單元以形成每一該些驅動單元的掃描發光區間；其中，在每一該些驅動單元的掃描發光區間中，該些多列脈寬調變像素電路首先被依序地選擇以寫入一同調性資料，以及接著同時地進行脈寬調變發光；其中該些多列脈寬調變像素電路中的每個脈寬調變像素電路包括一發光二極體及連接以驅動該發光二極體的一驅動電路其中該發光二極體顯示面板更包括至少一斜率訊號選擇電路，用以依序地致能每一該些驅動單元，以在被致能的每一該些驅動單元的掃描發光區間中，每列脈寬調變像素電路被依序地選擇以寫入該同調性資料，以及被同時地輸入一多斜率信號，以使每列脈寬調變像素電路同時地進行脈寬調變發光；其中該斜向訊號選擇電路包括：第一開關、第二開關、第三開關、第四開關及第五開關，該第一開關、該第二開關、該第三開關、該第四開關及該第五開關中每一開關具有第一端、第二端及決定第一端及第二端是否導通的控制端，該第一開關的第一端用以接收該多斜向訊號，該第一開關的第二端、該第二開關的第二端、該第三開關的第一端、該第四開關的第一端及該第五開關的第一端電性連接於一第一節點，該第二開關的第一端用以接收一第一直流電壓，該第三開關的第二端、該第四開關的第二端及該第五開關的第二端用以接收一第二直流電壓，其中該第一直流電壓不同於該第二直流電壓。 A driving method of a light-emitting diode display panel, the driving method comprising: dividing the light-emitting diode display panel equally along the scanning direction of the light-emitting diode display panel to form a plurality of driving units, wherein each driving unit includes multiple columns of pulse width modulated pixel circuitry; and Enabling each of the driving units sequentially to form a scanning light-emitting interval of each of the driving units; wherein, in the scanning light-emitting interval of each of the driving units, the plurality of columns of pulse-width-modulated pixel circuits first are sequentially selected to write the same tone data, and then perform pulse width modulation to emit light simultaneously; wherein each pulse width modulation pixel circuit in the plurality of columns of pulse width modulation pixel circuits includes a light emitting diode body and a driving circuit connected to drive the light emitting diode, wherein the light emitting diode display panel further includes at least one slope signal selection circuit for sequentially enabling each of the driving units to be enabled In the scanning light-emitting interval of each of these driving units, each column of pulse width modulated pixel circuits is sequentially selected to write the coherence data, and a multi-slope signal is simultaneously input to make the pulse width of each column The modulation pixel circuit simultaneously performs pulse width modulation to emit light; wherein the oblique signal selection circuit includes: a first switch, a second switch, a third switch, a fourth switch and a fifth switch, the first switch, the second Each switch in the switch, the third switch, the fourth switch and the fifth switch has a first terminal, a second terminal and a control terminal for determining whether the first terminal and the second terminal are conducting. The first switch of the first switch terminal for receiving the multi-slope signal, the second terminal of the first switch, the second terminal of the second switch, the first terminal of the third switch, the first terminal of the fourth switch and the fifth switch The first end of the second switch is electrically connected to a first node, the first end of the second switch is used to receive a first DC voltage, the second end of the third switch, the second end of the fourth switch and the first The second terminal of the five switches is used for receiving a second DC voltage, wherein the first DC voltage is different from the second DC voltage.

如請求項10所述之驅動方法，其中在該些多列脈寬調變像素電路被依序地選擇以寫入該同調性資料時，該斜率訊號選擇電路的該第一開關、該第二開關、該第三開關及該第五開關被關閉、以及該第四開關的控制端接收每列脈寬調變像素電路的一致能信號而使該第四開關被開啟，以便由該第四開關的第二端接收該第二直流電壓並透過該第一節點輸入該第二直流電壓至每列脈寬調變像素電路。 The driving method as described in claim 10, wherein when the plurality of columns of pulse-width-modulated pixel circuits are sequentially selected to write the coherence data, the first switch and the second switch of the slope signal selection circuit The switch, the third switch and the fifth switch are turned off, and the control terminal of the fourth switch receives an enable signal of each column of pulse width modulation pixel circuits so that the fourth switch is turned on, so that the fourth switch The second terminal of the second terminal receives the second direct current voltage and inputs the second direct current voltage to each column of pulse width modulation pixel circuits through the first node.

如請求項10所述之驅動方法，其中在該些多列脈寬調變像素電路被同時地輸入該多斜率信號時，該斜率訊號選擇電路的該第二開關、該第三開關、該第四開關及該第五開關被關閉、以及該第一開關的控制端接收每一該些驅動單元的一發光信號而使該第一開關被開啟，以便由該第一開關的第一端接收該多斜率訊號並透過該第一節點輸入該多斜率信號至該些多列脈寬調變像素電路。 The driving method according to claim 10, wherein when the multi-column pulse width modulation pixel circuits are simultaneously input with the multi-slope signal, the second switch, the third switch, and the second switch of the slope signal selection circuit The four switches and the fifth switch are turned off, and the control terminal of the first switch receives a light emitting signal from each of the driving units, so that the first switch is turned on, so that the first terminal of the first switch receives the The multi-slope signal is input to the multi-column PWM pixel circuits through the first node.